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Flexi Multiradio BTS LTE Installation Site Requirements
2 DN0951839 Issue: 01A

Table of Contents
This document has 86 pages

Summary of changes..................................................................... 8

1 CE marking.................................................................................... 9

2 FCC Part 15 compliance.............................................................. 10

3 RSS-310 compliance....................................................................11

4 EU RoHS statement.....................................................................12

5 Environmental requirements........................................................ 13
5.1 Environmental specifications and requirements for a standalone
BTS.............................................................................................. 13
5.2 Installations with cabinet ............................................................. 15
5.3 Environmental specifications and requirements for modules in
Flexi Cabinet for Indoor (FCIA).................................................... 16
Flexi Cabinet for Outdoor (FCOA) without air filter...................... 17
Flexi Cabinet for Outdoor (FCOA) with air filter........................... 19
Flexi Mounting Shield (FMSA/FMSB).......................................... 20
5.7 Environmental specifications and requirements for Remote Radio
Head.............................................................................................22
5.8 Safety distance requirements (compliance boundaries).............. 23
5.9 Compliance with EMC, RF and safety......................................... 31

6 Site requirements......................................................................... 33
6.1 Planning and preparing the site................................................... 33
6.2 General site requirements............................................................33
6.2.1 Indoor site requirements.............................................................. 34
6.2.2 Choosing site for the Remote Radio Heads.................................34
6.3 Feederless site and Distributed site solution requirements..........35
6.3.1 NSN SFPs properties...................................................................35
6.3.2 DC cable lengths of the Feederless Site Concept....................... 37
6.3.3 DC cabling principles and shielding............................................. 47
6.4 Pole installation requirements...................................................... 47
6.5 Floor installation requirements..................................................... 49
6.6 Wall installation requirements...................................................... 51
6.7 Module clearances....................................................................... 51
6.8 Remote Radio Head clearances.................................................. 52
6.9 FPAD clearances..........................................................................53
6.10 Flexi Cabinet for Indoor (FCIA) clearances and anchoring holes....
53
Issue: 01A DN0951839 3

6.11 Flexi Cabinet for Outdoor (FCOA) clearances and anchoring holes
..................................................................................................... 55
6.12 Flexi Mounting Shield (FMSA and FMSB) clearances and
anchoring holes............................................................................57

7 Power requirements..................................................................... 60
7.1 Site earth and BTS grounding requirements................................60
7.2 Mains power requirements...........................................................61
7.2.1 Circuit breakers............................................................................ 61
7.2.2 FPMA Battery backup times.........................................................62
7.2.3 FPMA AC wiring and Fuse requirements.....................................63
7.3 RF Module and RRH DC cable requirements.............................. 64
7.3.1 DC cable requirements for 80 W RF Modules............................. 64
7.3.2 DC cable requirements for 6TX 40W RF Modules.......................64
7.4 BTS power consumption.............................................................. 66
7.4.1 Power consumption of various FDD Flexi Multiradio BTS
configurations...............................................................................66
7.4.2 Power consumption of TDD Flexi RF Modules and RRHs
configurations...............................................................................68
7.5 Lightning surge requirements.......................................................69

8 Dimensions and weights.............................................................. 75
8.1 Module dimensions and weights.................................................. 75
8.1.1 RF Module dimensions and weight.............................................. 75
8.1.2 RRH Module dimensions and weight........................................... 76
8.2 FCIA dimensions and weight....................................................... 79
8.3 Flexi Cabinet for Outdoor (FCOA) dimensions and weight..........80
8.4 Flexi Mounting Shield (FMSA and FMSB) dimensions and weights
..................................................................................................... 81
8.5 Flexi Power Rectifier (FPRx) dimensions.....................................82

9 Citytalk cabinet requirements.......................................................83

10 Third-party cabinet requirements................................................. 84

11 19-inch open rack requirements...................................................86
4 DN0951839 Issue: 01A

List of Figures
Figure 1 List of countries respecting EU Directive 1999/5/EC............................9
Figure 2 Sea salt distribution over land masses...............................................16
Figure 3 Area around the antenna....................................................................25
Figure 4 Antenna side and top view................................................................. 25
Figure 5 Antenna connection to the BTS..........................................................28
Figure 6 Formula for safety distances.............................................................. 30
Figure 7 DC cable lengths of the Feederless Site Concept..............................38
Figure 8 Example DC Power Feeder Graph.....................................................40
Figure 9 50 mm2 cable length as function of load............................................41
Figure 10 35 mm2 cable length as function of load............................................ 42
Figure 14 6 mm2 cable length as function of load...............................................46
Figure 15 Wind load calculations, side view.......................................................48
Figure 16 Wind load calculations, front view...................................................... 49
Figure 17 Anchoring the plinth on the floor.........................................................50
Figure 18 Anchoring the plinth on base with maintenance space in the back....51
Figure 19 Minimum RRH clearances for cooling purposes................................ 52
Figure 20 FPAD clearances for cooling purposes.............................................. 53
Figure 21 Clearances around FCIA....................................................................54
Figure 22 FCIA fixing points, minimum clearances............................................ 54
Figure 23 FCIA fixing points with maintenance space in the back..................... 55
Figure 24 Cabinet clearances and anchoring holes........................................... 56
Figure 25 FCOA cabinet bottom cable entry...................................................... 57
Figure 26 FMSA fixing points..............................................................................58
Figure 27 FMSB fixing points..............................................................................59
Figure 28 3U module dimensions without covers...............................................75
Figure 29 3U module dimensions with covers....................................................76
Figure 30 Isometric view of the RF Module FRGT............................................. 76
Figure 31 Isometric view of the Remote Radio Head (FRIG)............................. 78
Figure 32 Isometric view of the Remote Radio Head (FHDB)............................79
Figure 33 Module level cooling in a third-party cabinet...................................... 85
Figure 34 19-inch open rack...............................................................................86
Issue: 01A DN0951839 5

List of Tables
Table 1 Climatic conditions for operation........................................................ 13
Table 2 Temperature and humidity values ......................................................14
Table 3 Flexi Multiradio BTS sound power levels (measured according to ISO
3744).................................................................................................. 14
Table 6 FCOA (without air filter) sound power level........................................18
Table 9 FCOA (with air filter) sound power level.............................................19
Table 13 FMSA/FMSB sound power levels (measured according to ISO 3744)...
21
Table 15 Remote Radio Head temperature range............................................ 23
Table 16 Whole body SAR exclusion power levels........................................... 24
Table 17 Dimensions of compliance boundary (General Public).......................26
Table 18 Dimensions of compliance boundary (occupational)..........................26
Table 19 A detailed description of the components...........................................28
Table 20 A typical antenna specification........................................................... 28
Table 21 Basic restrictions................................................................................ 29
Table 22 Reference values calculated from basic restrictions.......................... 30
Table 23 3 Gbps SFPs properties..................................................................... 35
Table 24 6 Gbps SFPs properties..................................................................... 36
Table 25 Conductors maximum current and circuit protection.......................... 38
Table 26 NSN requirements for a shielded, locally sourced DC cable (3U RF
Module), T=20ºC (68ºF)..................................................................... 47
Table 27 Area for wind load calculations...........................................................49
Table 28 Area for wind load calculations (FMSA)............................................. 49
Table 29 Required minimum clearances...........................................................52
Table 30 Cabinet clearances.............................................................................53
Table 31 Cabinet clearances.............................................................................55
Table 32 FMSA clearances............................................................................... 57
Table 33 FMSB clearances............................................................................... 57
Table 34 Permitted operating voltage................................................................61
Table 35 Battery backup times..........................................................................62
Table 36 Fuse and wire cross section requirements single phase AC..............63
6 DN0951839 Issue: 01A

Table 37 Fuse and wire cross section requirements three phase AC...............63
Table 38 Fuse and wire cross section requirements three phase AC for dual
FPMA..................................................................................................63
Table 39 DC Cable Requirements for 80 W RF Modules..................................64
Table 40 DC cable requirements for 6TX 40W FRMC, FRPA, FRPB Modules.65
Table 41 DC cable requirements for 6TX 40W FRHC, FRHF Modules............ 65
Table 42 Typical and maximum power consumptions for Flexi Multiradio BTS
configurations in LTE FDD..................................................................66
Table 43 Power consumption of Flexi Outdoor Cabinet fans FCFA, FCSA, and
FCOS..................................................................................................67
Table 44 Typical power consumptions for Flexi Multiradio BTS configurations in
LTE TDD.............................................................................................68
Table 45 Switching and lightning transient requirements for AC power port ....69
Table 46 Surge immunity requirements for DC power port............................... 69
Table 47 Lightning surge requirements for antenna ports.................................70
Table 48 Lightning surge requirements for telecom ports................................. 70
Table 49 Surge requirements for alarm and control ports.................................71
Table 50 Lightning surge requirements for Ethernet ports................................ 71
Table 51 Lightning surge requirements for FSEC/FSES...................................72
Table 52 Lightning surge requirements (DC power port) FPFD........................72
Table 53 Lightning surge requirements for FPFC............................................. 73
Table 54 Lightning surge requirements for selected RF Modules.....................73
Table 55 Lightning surge requirements for selected RRHs...............................74
Table 56 RF Module dimensions and weight.................................................... 75
Table 57 Dimensions and weight of the Remote Radio Head...........................76
Table 58 Dimensions and weight of Flexi Cabinet for Indoor (FCIA)................ 80
Table 59 Dimensions and weight of Flexi Cabinet for Outdoor (FCOA)............80
Table 60 Dimensions and weight of Flexi Mounting Shield 6U (FMSA)............81
Table 61 Dimensions and weight of Flexi Mounting Shield 18U (FMSB)..........81
Table 62 Flexi Power Rectifier FPRA................................................................82
Table 63 Air volume flow and cabinet pressure drop........................................ 84
Issue: 01A DN0951839 7

Summary of changes
Changes between document issues are cumulative. Therefore, the latest document
issue contains all changes made to previous issues.
Changes between issues 01 (2013-09-18, RL50) and 01A (2013-11-29,
RL50)
• Tables: Dimensions of compliance boundary (General Public) and Dimensions of
compliance boundary (occupational) have been updated.
• Section Battery backup times has been renamed to FPMA Battery backup times.
• Section DC cable requirements for 80 W RF Modules has been updated with the
FRGT information.
• Sections: DC cable requirements for 80 W RF Modules and Lightning surge
requirements have been updated with the FPFC information.
• The following sections have been added:
– FPAD clearances
– FPMA AC wiring and Fuse requirements
– DC cable requirements for 6TX 40W RF Modules
– Flexi Power Distribution and Fuses (FPFC)
• The following sections have been updated:
– Circuit breakers
– Third-party cabinet requirements
– FPMA Battery backup times
This is the first issue of the document.
This document is a combined version of two documents, Flexi Multiradio BTS LTE
Installation Site Requirements (DN09123378, issue 01, 2013-05-24) and Flexi Multiradio
BTS LTE Installation Site Requirements (DN0951839, issue 03C, 2013-07-11), which
were available respectively in RL25TD library and RL40 library in the previous releases.
Summary of changes Flexi Multiradio BTS LTE Installation Site Requirements
8 DN0951839 Issue: 01A

1 CE marking
Declaration of Conformity with Regard to the EU Directive 1999/5/EC (R&TTE
Directive)
Hereby, NSN declares that this equipment is in compliance with the essential
requirements and other relevant provisions of Directive: 1999/5/EC.
Figure 1 List of countries respecting EU Directive 1999/5/EC
AT ü FR ü LV ü LI ü
BE ü DE ü LT ü RO ü
BG ü GB ü LU ü SK ü
CY ü GR ü MT ü SI ü
CZ ü HU ü NL ü ES ü
DK ü IS ü NO ü SE ü
EE ü IE ü PL ü CH ü
FI ü IT ü PT
R&TTEDirective1995/5/EC
ü TR ü
This declaration is only valid for configurations (combinations of software, firmware, and
hardware) provided and/or supported by NSN.
Flexi Multiradio BTS LTE Installation Site Requirements CE marking
Issue: 01A DN0951839 9

2 FCC Part 15 compliance
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manuals, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at
his own expense. Changes or modifications not expressly approved by the party
responsible for compliance could void the user´s authority to operate the equipment.
FCC Part 15 compliance Flexi Multiradio BTS LTE Installation Site Requirements
10 DN0951839 Issue: 01A

3 RSS-310 compliance
This device complies with RSS-310 of Industry Canada. Operation is subject to the
condition that this device does not cause harmful interference.
Flexi Multiradio BTS LTE Installation Site Requirements RSS-310 compliance
Issue: 01A DN0951839 11

4 EU RoHS statement
This equipment complies with the European Union RoHS Directive 2011/65/EU on the
restriction of the use of certain hazardous substances in electrical and electronic
equipment. The directive applies to the use of lead, mercury, cadmium, hexavalent
chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE)
in electrical and electronic equipment.
EU RoHS statement Flexi Multiradio BTS LTE Installation Site Requirements
12 DN0951839 Issue: 01A

5 Environmental requirements
5.1 Environmental specifications and requirements for
a standalone BTS
w NOTICE:
Unprotected equipment might be damaged during transportation. Transport the
equipment to the installation site in its original transportation package.
Flexi Multiradio stand-alone BTS (modules installed without a cabinet) can operate under
the environmental specifications defined in Table 1: Climatic conditions for operation,
Table 2: Temperature and humidity values, and
Table 3: Flexi Multiradio BTS sound power levels (measured according to ISO 3744).
Table 1 Climatic conditions for operation
Property Value
Transportation requirements ETSI EN 300 019-1-2, Class 2.3
(for single module, in packing)
Storage requirements ETSI EN 300 019-1-1, Class 1.2
(for single module, in packing)
Operational requirements ETSI EN 300 019-1-3, class 3.2 (indoor site)
ETSI EN 300 019-1-4, class 4.1 (outdoor site)
Wind driven rain GR-487-CORE
MIL-STD 810E method 506.3 for Rainfall rate 15 cm/h
(0.49 ft/h) and Wind velocity 31 m/s (69.35 mph)
Wind load Two 3U modules, FMFA and mounting kit (VMPB or FP-
KA/FPKC): 67 m/s (149.87 mph)
Salt fog and dust IEC 60721-2-5
IEC 60068-2-52/Kb, Stress level 1 with 0,44% salt solu-
tion by weight.
This corresponds to IEC 60721-2-5 Humid costal and
inland (moderate) environment with < 8mg/(m2day) salt
deposition for outdoor BTS without optional cabinet with
air filter.
A typical installation location example: not less than 500
m from the seashore.
Ingress Protection IP65 (no water ingress allowed)
Safety IEC/EN 60950-1, UL 60950-1
Earthquake Requirements Telcordia GR-63-CORE, Vibrational requirements for
earthquake Zone 4
Max. 5 modules in pile, maximum total height 15 U
Flexi Multiradio BTS LTE Installation Site Requirements Environmental requirements
Issue: 01A DN0951839 13

Table 1 Climatic conditions for operation (Cont.)
Property Value
Telcordia GR-63-CORE, Vibrational requirements for
earthquake Zone 2
Max. 9 modules in pile, maximum total height 22 U
Table 2 Temperature and humidity values
Property Temperature Humidity, relative
Transportation -40°C - +70°C (-40°F - +158°F) Max. 95%
Storage -33°C - +40°C (-27.4°F - +104°F) 15 - 100%
High ambient air temperature
limit
+55°C (+131°F) in shade with guar-
anteed minimum performance of
3GPP specification
+50°C (+122°F) in shade with guar-
anteed performance (that is better
than 3GPP)
+50°C (+122°F) in direct sunlight
with guaranteed minimum perfor-
mance of 3GPP specification
+45°C (+113°F) in direct sunlight
with guaranteed performance (that
is better than 3GPP)
15 - 100%
Operational -35°C - +55°C (-31°F - +131°F) ~95%
Table 3: Flexi Multiradio BTS sound power levels (measured according to ISO 3744)
shows the sound power levels measured with linear curve control.
3744)
Configuration Minimum
[dBA]
(15°C (59°F),
10% RF load)
Typical [dBA]
(23°C (73.4°F),
50% RF load)
Max [dBA]
(40°C (104°F),
100% RF load)
Max [dBA]
(50°C (122°F),
100% RF load)
1+1+1@ 20 W
System Module with one
3-sector RF Module
Max. 51 Max. 54 Max. 60 Max. 65
1+1+1@ 40 W
System Module with one
3-sector RF Module
Max. 54 Max. 56 Max. 62 Max. 66
2+2+2@ 40 W Max. 57 Max. 59 Max. 66 Max. 69
Environmental requirements Flexi Multiradio BTS LTE Installation Site Requirements
14 DN0951839 Issue: 01A

3744) (Cont.)
[dBA]
(15°C (59°F),
10% RF load)
Typical [dBA]
(23°C (73.4°F),
50% RF load)
Max [dBA]
(40°C (104°F),
100% RF load)
Max [dBA]
(50°C (122°F),
100% RF load)
System Module and two
RF Modules
FPMA effect
Add to above values:
Max. 3 Max. 3 Max. 3 Max. 3
For the sound power of a 3-sector RF Module alone, see the values for a 1+1+1@ 20 W config-
uration.
For the sound power of a System Module alone, subtract 3 dBA from the above values.
5.2 Installations with cabinet
Modules must be installed in an indoor cabinet or an outdoor cabinet, when:
• more than nine modules are installed in a stack (total height over 22 U*)
• more than five modules are installed in a stack (total height over 15 U) and the
Telcordia GR-63-CORE Zone 4 requirement is still met
• the BTS is installed in a separate locked space
• cabinet can be also used as one option to make locked space
g 22 U high stack meets Telcordia GR-63-CORE Zone 2 earthquake requirement.
An air filter must be used together with the BTS cabinet when standard-based
operational environmental conditions presented in
Environmental specifications and requirements for a stand-alone BTS are exceeded.
Typically, a cabinet with an optional air filter is needed:
• in places where dust is a concern
• next to a dusty road with heavy traffic
• in sandy terrain with the possibility of wind-blown sand in the air
• next to an industrial plant with significant emissions of dust or other particles, such as
cement factory, sawmill, and so on
• nearby a cornfield with heavy straw dust during harvesting
• in places where salt fog or acid rain caused by air pollution is a concern
• in site locations where surrounding metal structures show signs of corrosion because
of the extreme conditions (salt in air)
• in locations with especially heavy rainfall and high humidity combined with air
pollution
• near sea shore:
– with dense salt fog because of the breaking waves
– with dense salt fog and line of sight to the sea (not behind a large building)
– where wind-driven salt fog from sea can be identified
Issue: 01A DN0951839 15

For a generic model for sea salt distribution, see
Figure 2: Sea salt distribution over land masses. Typically, the further away from the sea
the BTS is located the less salt is accumulated. However, because of the local
environmental variables a general rule for determining the distance cannot be stated.
Always check the local environmental conditions before installing a BTS in the proximity
of the sea.
Figure 2 Sea salt distribution over land masses
modules in Flexi Cabinet for Indoor (FCIA)
Flexi Multiradio BTS modules inside Flexi Cabinet for Indoor (FCIA) can operate as
defined in Table 4: Climatic conditions for operation.
Property Value
Transportation requirements ETS 300 019-1-2, class 2.3
Storage requirements ETS 300 019-1-1, class 1.2
Operational requirements ETS 300 019-1-3, class 3.2
GR-63-CORE
16 DN0951839 Issue: 01A

Property Value
Salt fog and dust IEC 60068-2-60/Ke
Ingress Protection IP20
Safety IEC/EN 60950-1, UL 60950-1
Earthquake requirements Telcordia GR-63-CORE, Zone 4
modules in Flexi Cabinet for Outdoor (FCOA)
without air filter
Flexi Multiradio BTS modules installed inside Flexi Cabinet for Outdoor (FCOA) can
operate as defined in Table 5: Climatic conditions for operation,
Table 6: FCOA (without air filter) sound power level, and
Table 7: Temperature and humidity values.
Property Value
Operational requirements ETSI EN 300 019-1-4, class 4.1 and IEC class 4M5
MIL-STD 810E method 506.3 for Rainfall rate 15 cm/h (0.49
ft/h)
Wind velocity 31 m/s (69.35 mph)
Wind load Wind load 67 m/s (149.87 mph)
IEC 60068-2-52/Kb, Stress level 1 with 0,44% salt solution
by weight.
This corresponds to IEC 60721-2-5 Humid costal and inland
(moderate) environment with < 8mg/(m2/day) salt deposition
for outdoor BTS without optional cabinet with air filter.
Typical installation location example: 500 m (546 yd 2.4 ft)
from the seashore.
Safety IEC/EN 60950-1, UL 60950-1
Issue: 01A DN0951839 17

Property Value
Table 6: FCOA (without air filter) sound power level shows the sound power levels
measured with linear curve control.
Table 6 FCOA (without air filter) sound power level
Value Configuration Max [dBA]
Sound power, night time
(in +15°C (59°F), 10% RF load,
ISO3744)
1+1+1 40W/carrier
(System Module with one 3-sector RF
Module)
55
Sound power, day time
(in +23°C (73.4°F), 50% RF load,
ISO3744)
1+1+1 40W/carrier
Module)
57
Sound power, extreme
(in +40°C (104°F), 100% RF load,
ISO3744)
1+1+1 40W/carrier
Module)
63
Property Temperature Humidity, relative%
Storage -33°C - +40°C (-27.4°F - +104°F) 15 - 100%
High ambient air
temperature limit
+55°C (+131°F) in shade with guaranteed
minimum performance of 3GPP specification
+50°C (+122°F) in shade with guaranteed
performance (that is better than 3GPP)
+50°C (+122°F) in direct sunlight with guaran-
teed minimum performance of 3GPP specifi-
cation
teed performance (that is better than 3GPP)
15 - 100%
g To reduce the risk of temperature alarms or power reduction, average power
across all TX branches should be limited to 60 W or less (or 4 kW total power
consumption for all modules in cabinet) for ambient temperatures 46-55ºC
(114.8-131ºF). Temperature alarms are based on internal module sensors.
18 DN0951839 Issue: 01A

modules in Flexi Cabinet for Outdoor (FCOA) with
air filter
Flexi Multiradio BTS modules installed inside Flexi Cabinet for Outdoor (FCOA) with an
optional air filter can operate as defined in Table 8: Climatic conditions for operation,
Table 9: FCOA (with air filter) sound power level, and
Table 10: Temperature and humidity values.
Property Value
MIL-STD 810E method 506.3 for rainfall rate 15cm/h ()0.49
ft/h
IEC 60068-2-52/Kb, Stress level 1 with 5% salt solution by
weight
This corresponds to IEC 60721-2-5 oceanic and coastal en-
vironment with > 8mg/(m2day) salt deposition for outdoor
BTS with optional air filter.
When installing a cabinet with an air filter on a seashore, it is recommended that the cabinet is
installed with the side wall facing the sea (not the filter or the door).
Safety IEC/EN 60950-1, UL 60950-1
Table 9: FCOA (with air filter) sound power level shows the sound power levels
measured with linear curve control.
Table 9 FCOA (with air filter) sound power level
Sound power, night time 1+1+1 40W/carrier 56*
Issue: 01A DN0951839 19

Table 9 FCOA (with air filter) sound power level (Cont.)
(in +15°C (59°F), 10% RF load,
ISO3744)
(System Module with one 3-sector
RF Module)
Sound power, day time
(in +23°C (73.4°F), 50% RF load,
ISO3744)
1+1+1 40W/carrier
RF Module)
59*
Sound power, extreme
(in +40°C (104°F), 100% RF load,
ISO3744)
1+1+1 40W/carrier
RF Module)
65*
*) Sound power figures measured with a clean filter.
Storage -33°C - +40°C (-27.4°F - +104°F) 15 - 100%
High ambient air
temperature limit
+55°C (+131°F) in shade with guaranteed min-
imum performance of 3GPP specification
+50°C (+122°F) in shade with guaranteed per-
formance (that is better than 3GPP)
teed minimum performance of 3GPP specifi-
cation
teed performance (that is better than 3GPP)
15 - 100%
modules in Flexi Mounting Shield (FMSA/FMSB)
Flexi Multiradio BTS modules installed inside Flexi Mounting Shield (FMSA/FMSB)
cabinet can operate in the climatic conditions as defined in
Table 11: Climatic conditions for operation.
20 DN0951839 Issue: 01A

Property Value
Safety IEC 60529
Earthquake requirements Telcordia GR-63-CORE, Zone 4*
*If a sixth module is installed in the cabinet, the earthquake requirements are according to
Zone 2.
In extreme conditions, for example, with high salinity less than 500 m to the sea or high
dust density in the air, it is required to use a shelter or outdoor cabinet with an air filter.
Storage -33°C - +40°C (-27.4°F - +104°F) 15 - 100%
Table 13: FMSA/FMSB sound power levels (measured according to ISO 3744) shows
the sound power levels measured with linear curve control.
Table 13 FMSA/FMSB sound power levels (measured according to ISO 3744)
[dBA]
(in 15°C
(59°F), 10%
RF load)
Typical [dBA]
(in 23°C
(73.4°F), 50%
RF load)
Max [dBA]
(in 40°C
(104°F),
100% RF
load)
Max [dBA]
(in 50°C
(122°F),
100% RF
load)
1+1+1 @ 20W
(System Module one 3-sector
RF Module)
Max. 51 Max. 54 Max. 60 Max. 65
1+1+1 @ 40W
(System Module with one 3-
sector RF Module)
Max. 54 Max. 56 Max. 62 Max. 66
2+2+2 @ 40W Max. 57 Max. 59 Max. 66 Max. 69
Issue: 01A DN0951839 21

Table 13 FMSA/FMSB sound power levels (measured according to ISO 3744)
(Cont.)
[dBA]
(in 15°C
(59°F), 10%
RF load)
Typical [dBA]
(in 23°C
(73.4°F), 50%
RF load)
Max [dBA]
(in 40°C
(104°F),
100% RF
load)
Max [dBA]
(in 50°C
(122°F),
100% RF
load)
(System Module and two RF
Modules)
FPMA effect
Add to above values:
Max. 3 Max. 3 Max. 3 Max. 3
Remote Radio Head
w NOTICE:
Unprotected equipment might be damaged during transportation. Transport the
equipment to the installation site in its original transportation package.
Property Value
Operational requirements ETSI EN 300 019-1-4, class 4.1 and IEC class
4M5
MIL-STD 810E method 506.3 for Rainfall rate 15
cm/hr.
Wind velocity 31 m/s
Wind load Mounting kit (VMPB or FPKA/FPKC) included: 67
m/s
IEC 60068-2-52/Kb, Stress level 1 with 0,44% salt
solution by weight.
This corresponds to IEC 60721-2-5 Humid costal
and inland (moderate) environment with <
8mg/(m2day) salt deposition for outdoor BTS with-
out optional cabinet with air filter.
Typical installation location example: 500 m from
the seashore.
22 DN0951839 Issue: 01A

Property Value
Safety IEC-60950-1
For Remote Radio Head temperature range, see
Table 15: Remote Radio Head temperature range.
Table 15 Remote Radio Head temperature range
Property Temperature Note
Maximum operational out-
door temperature
(in the shade)
+55°C (131°F) At constant high ambient tem-
perature maximum output power
might be limited.
Maximum operational out-
door temperature
(in the sun)1)
+50°C (122°F) At constant high ambient tem-
perature maximum output power
might be limited.
Maximum indoor tempera-
ture
+40°C (104°F) This is valid for fanless products.
Minimum operational tem-
perature
-40°C (-40°F) Including cold start.
The Remote Radio Head can be classified as silent. Therefore, a sound power level
table is not included.
5.8 Safety distance requirements (compliance
boundaries)
This section describes compliance with reference levels (based on basic restrictions) for
general public and occupational exposure to radio frequency electromagnetic fields.
Ensuring public safety
This equipment generates radio frequency energy, which has a thermal effect when
absorbed by the human body. For this reason compliance boundaries specific to this
equipment have been established. The thermal effects of radio frequency energy can
exceed safety levels when a person is inside the established compliance boundaries.
Observe the compliance boundary, and make sure the general public has no access to
areas inside the established boundaries. The information shown in the section
Warnings and cautions provided is taken from the relevant section of NSN product
documentation containing warnings and cautions specific to the equipment.

1) According to GR-487-Core specification
Issue: 01A DN0951839 23

Installing base stations to ensure installer safety
Installation engineers need to be aware of the potential risk of the thermal effects of radio
frequency energy and how to protect themselves against undue risk. The information
shown in the Warnings and cautions provided section is taken from the relevant section
of NSN product documentation containing warnings and cautions specific to the
equipment.
Warnings and cautions provided
Reference safety distances
When working close to transmitter antennas, the proper safety distances must be
observed. The minimum safe distance from an antenna is measured in metres.
f The antenna generates electromagnetic fields at radio frequencies. Do not
cross the compliance boundary.
f This equipment generates electromagnetic fields. If performing installation or
maintenance procedures on the antenna systems, make sure that all the
transmitters in the area are switched off.
When assessing the applicable boundaries, the European standards EN 50383, EN
50384, EN 50385 and Council Recommendation 1999/519/EC for occupational and
general public electromagnetic exposure limits - see Annex A - have been applied.
The statements shown below are taken from the NSN product documentation containing
warning and cautions specific to the equipment.
Assessment applying Specific Absorption Rate (SAR)
measurements
European standards EN 50383, EN 50384 and EN 50385 do not include specifications
for whole body SAR measurements. Whole body SAR measurements are not required
for transmitters that have maximum output power levels too low to result in exposure
levels that can reach the whole body SAR compliance limits under any conditions. Whole
body SAR exclusion power levels have been based on the worst case assumptions. For
details, see Table 16: Whole body SAR exclusion power levels.
Table 16 Whole body SAR exclusion power levels
Exposure category Maximum output power (rms)
General public Max power [W] = general public whole
body SAR limit [W/kg] * 12.5 kg: 4-year-
old child body mass = 1 W
Occupational Max power [W] = occupational whole body
SAR limit [W/kg] * 42 kg: 16-year-old
worker body mass = 16.8 W
Localized SAR measurements can only be used when:
1. The separation between the phantom and the outer surface of the energy generating
element is 40 cm (15.6 in.) or less.
2. The surface area of the energy generating element is less than 60 cm (23.6 in.) by
30 cm (11.8 in.).
3. The frequency is in the range of 800 to 3000 MHz.
24 DN0951839 Issue: 01A

For the reasons above, SAR measurements are not applicable to Flexi Multiradio Base
Station.
Assessment of compliance boundary
The compliance boundary is defined as the area around the antenna shown in
Figure 3: Area around the antenna. The antenna is located at the origo. Distances from
the antenna are shown. The top and side views are shown in
Figure 4: Antenna side and top view.
Figure 3 Area around the antenna
0
0
0
Dside
back
Ddown
Drear
Dfront front
front
Dside
Dside
Dup
DN03400968
Origo
Figure 4 Antenna side and top view
DN03400995
1 2
Dside
back
Drear
back
Dside
Dfront
triangle
Dside
front
Dside
front
Drear
Dup
Ddown
Dfront
triangle
Dfront
The compliance boundaries for Flexi Multiradio Base Station are presented for the worst
case power levels at the antenna input. The worst case power level configurations for
general public (GP) and occupational (O) exposure limits are shown in
Table 17: Dimensions of compliance boundary (General Public) and
Table 18: Dimensions of compliance boundary (occupational).
Issue: 01A DN0951839 25

Table 17 Dimensions of compliance boundary (General Public)
Dfront
[m]
Dfront
triangle
[m]
Drear
[m]
Dside
back
[m]
Dside
front
[m]
Dup
[m]
Ddown
[m]
Freq. (MHz) Power
at an-
tenna
input
GP GP GP GP GP GP GP
900 40 7 2.4 0.3 0.4 2 0.95 0.95
1700 40 4.4 1.2 0.1 0.2 1.5 0.6 0.6
1700 2 * 60 7.7 2.4 0.1 0.7 3.0 0.8 1.8
1800 40 4.4 1.2 0.1 0.2 1.5 0.5 0.5
1900 80 6.45 1.5 0.25 0.4 2.05 0.6 0.6
2100 40 4.7 1.5 0.1 0.4 1.5 0.6 0.6
2100 60 5.7 2.0 0.1 0.5 1.85 1.6 1.0
2100 80 6.45 1.5 0.25 0.4 2.05 0.6 0.6
2100 2 * 60 7.8 3.0 0.1 0.8 2.8 2.1 1.4
2300 - 2600 8 0.85 0.25 0.1 0.15 0.15 0.7 0.7
2300 - 2600 20 2.7 0.75 0.1 0.25 0.65 1.1 0.8
2300 - 2600 40 4.5 1.6 0.1 0.4 1.4 1.45 1.1
2300 - 2600 60 5.8 1.8 0.1 0.5 2 1.7 1.25
Recommend 2-200 m (6.56- 656.17 ft.)
Table 18 Dimensions of compliance boundary (occupational)
Dfront
[m]
Dfront
triangle
[m]
Drear
[m]
Dside
back
[m]
Dside
front
[m]
Dup
[m]
Ddown
[m]
Freq. (MHz) Power
at an-
tenna
input
O O O O O O O
900 40 2.95 1 0.05 0.2 0.6 0.85 0.85
1700 40 1.9 1.1 0.1 0.2 0.45 0.48 0.48
1700 2 * 60 2.6 0.8 0.1 0.2 0.7 0.7 0.75
26 DN0951839 Issue: 01A

Table 18 Dimensions of compliance boundary (occupational) (Cont.)
Dfront
[m]
Dfront
triangle
[m]
Drear
[m]
Dside
back
[m]
Dside
front
[m]
Dup
[m]
Ddown
[m]
1800 40 2.1 1.1 0.1 0.2 0.65 0.45 0.45
1900 80 3 1.1 0.15 0.2 0.95 0.5 0.5
2100 40 1.95 0.7 0.1 0.25 0.5 0.6 0.6
2100 60 1.1 0.4 0.1 0.1 0.3 1.0 1.0
2100 80 3 1.1 0.15 0.2 0.95 0.5 0.5
2100 2 * 60 1.8 0.6 0.1 0.2 0.55 0.9 0.7
2300 - 2600 8 0.15 0.1 0.1 0.1 0.1 0.7 0.7
2300 - 2600 20 0.35 0.1 0.1 0.1 0.15 0.7 0.7
2300 - 2600 40 0.85 0.2 0.1 0.15 0.25 0.7 0.7
2300 - 2600 60 1.4 0.3 0.1 0.15 0.35 0.75 0.7
Recommend 2-200 m (6.56- 656.17 ft.)
The component specifications for 900 MHz and 1800 MHz also apply to 850 MHz and
1900 MHz products, respectively, and can be used to demonstrate compliance with FCC
guidelines for human exposure to radio frequency electromagnetic fields contained in the
FCC document OET Bulletin 65 (August 1997).
Typical configuration
The antenna is connected through a connector and cable(s) to the base station as
shown in Figure 5: Antenna connection to the BTS.
Issue: 01A DN0951839 27

Figure 5 Antenna connection to the BTS
Tothebasestation
Antennaconnector
Cable
Antenna
DN03401004
Table 19 A detailed description of the components
Power (Pout) 20/40/60 W
Total connector loss 0.0 dB
Total cable loss 0.0 dB
Total Loss (L) = Total connector loss + To-
tal cable loss
0.0 dB
Number of transmitter unit (N) 1
Power at antenna input = PoutN10 -L / 10 20/40/60 W
The worst-case power level configuration is when the power at antenna input is 60 W
with 2100 MHz frequency variant and 40 W with others.
Table 20 A typical antenna specification
Frequency 2100 MHz 1700 MHz 1800/1900/210
0 MHz
Gain 17.2 dBi 17 dBi 17.2 dBi
28 DN0951839 Issue: 01A

Table 20 A typical antenna specification (Cont.)
Half-power
beam width
H-plane: 68 deg. H-plane: 60
deg.
H-plane: 68
deg.
E-plane: 10 deg. E-plane: 10
deg.
E-plane: 10
deg.
Electrical
downtilt
0 deg. 0 deg. 0 deg.
Height/width/d
epth
1000 / 200 / 100
mm
1100 / 200 /
100 mm
1100 / 200 /
100 mm
When using different configurations
IMPORTANT:
• In tables: 'Dimensions of compliance boundary in meters for general public
(GP)' and 'Dimensions of compliance boundary in meters (Occupational)' the
compliance boundaries are given for worst case power levels. If an exposure
limit, antenna, and/or configuration is used which does not correspond to the
levels given in tables 'Dimensions of compliance boundary in meters for
general public (GP)' and 'Dimensions of compliance boundary in meters
(Occupational)', the compliance boundary must be re-calculated according to
EN50383.
• The formula for calculating the compliance boundary using the far-field model,
which is referenced in EN50383, is given in ANNEX B later in this section. This
model is applicable for calculating the compliance boundary for the far-field
region and over estimates the compliance boundary for the radiating near-field
region, but is not applicable for calculating the compliance boundary for the
reactive near-field region where the distance from the antenna is less than or
equal to λ / 4.
ANNEX A: Council recommendation 1999/519/EC for occupational
and general public electromagnetic exposure limits
Table 21 Basic restrictions
Exposure char-
acteristics
Frequency
range
Whole body
average SAR
W kg-1
Localized
SAR (head
and trunk) W
kg-1
Localized
SAR (limbs)
W kg-1
Occupational ex-
posure
10 MHz - 10
GHz
0.4 10 20
General public
exposure
10 MHz - 10
GHz
0.08 2 4
Note that all SAR values are to be averaged over any period of 6 minutes. Localized
SAR averaging mass is any 10 g of contiguous tissue: the maximum SAR so obtained
should be the value used for the estimation of exposure.
Basic restrictions between 10 GHz and 300 GHz are given in power densities. For
occupational exposure, it is 50 Wm-2 and for general public exposure 10 Wm-2.
Issue: 01A DN0951839 29

Table 22 Reference values calculated from basic restrictions
Exposure charac-
teristics
Frequency
range
Electric field
strength V/m
Equivalent plane
wave power densi-
ty S (W m-2)
Occupational ex-
posure
10 - 400 MHz
400 - 2000
MHz
2 - 300 GHz
61
3f1/2
137
10
f/40
50
General public ex-
posure
10 - 400 MHz
400 - 2000
MHz
2 - 300 GHz
28
1.375f1/2
61
2
f/200
10
• f is frequency in MHz
• for frequencies between 100 KHz and 10 GHz, S is to be averaged over any period
of 6 minutes
• for frequencies exceeding 10 GHz, S is to be averaged over any period of 68/f1.05
minutes (f in GHz)
ANNEX B: Far-field calculation method
This model is applicable for calculating the compliance boundary for the far-field region
and over estimates the compliance boundary for the radiating near-field region, but is not
applicable for calculating the compliance boundary for the reactive near-field region
where the distance from the antenna is less than or equal to λ /4, which is 3.75 cm at
2000 MHz. Therefore, all calculations are valid when the compliance boundary is greater
or equal to the antenna dimensions plus λ /4.
The minimum safety distance (compliance boundary) in metres, or 'rmin', is calculated
according to the equation in Figure 6: Formula for safety distances:
Figure 6 Formula for safety distances
DN02152589
The meaning of each formula component is as follows:
• N is the number of transmitter units per one antenna
• G is the antenna gain (in dB)
• L is the minimum cable losses (in dB)
• Pout is the maximum power of one transmitter unit (in W)
• S is the maximum power density limit (in W/m²)
Note that in the far-field, the field calculation does not take into account the antenna size,
which is assumed to be a point source. Therefore, when calculating the compliance
boundary, the far-field data, antenna size and reactive field criteria have to be taken into
account.
30 DN0951839 Issue: 01A

5.9 Compliance with EMC, RF and safety
In Europe, this means compliance with Directive 1999/5/EC of the European Parliament
and of the Council of 9 March 1999 on radio equipment and telecommunications terminal
equipment and the mutual recognition of their conformity.
In other market areas additional compliance is fulfilled according to relevant authority
requirements.
EMC emission
Common
• ETSI EN 301 489-1: Electromagnetic compatibility and Radio spectrum Matters
(ERM); Electromagnetic Compatibility (EMC) standard for radio equipment and
services; Part 1: Common technical requirements.
• EN55022: “Limits and methods of measurement of radio disturbance characteristics
of information technology equipment”.
• FCC Code of Federal Regulations (CFR) 47, Part 15 “Radio Frequency Devices”.
WCDMA
• 3GPP TS 25.113: 3rd Generation Partnership Project; Technical Specification Group
Radio Access Networks; Base station and Repeater electromagnetic compatibility
(EMC).
LTE
Radio Access Networks; Evolved Universal Terrestrial Radio Access (E-UTRA); Base
Station (BS) and Repeater electromagnetic compatibility (EMC).
EMC immunity
Common
• ETSI EN 301 489-1: “Electromagnetic Compatibility and Radio Spectrum Matters
services - Part 1: Common technical requirements”.
services - Part 23: Specific conditions for IMT-2000 CDMA Direct Spread (UTRA)
Base Station (BS) radio, repeater and ancillary equipment”.
• IEC 1000-4-9: Pulse magnetic field immunity test.
• IEC 1000-4-8: “Electromagnetic Compatibility (EMC) Part 4. Testing and
measurement techniques Section 8: Power frequency magnetic field immunity test,
Basic EMC Publication”.
WCDMA
Radio Access Networks; Base station and Repeater electromagnetic compatibility
(EMC).
LTE
Station (BS) and Repeater electromagnetic compatibility (EMC).
Issue: 01A DN0951839 31

RF
Common
• FCC Code of Federal Regulations (CFR) 47, Part 2 “Frequency Allocations and
Radio Treaty Matters; General Rules and Regulations”.
• FCC Code of Federal Regulations (CFR) 47, Part 27 “Advanced Wireless Services”.
WCDMA
(ERM); Base Stations (BS) and User equipment (UE) for IMT-2000 third-generation
cellular networks - Part 1: Harmonized standard for IMT-2000, introduction and
common requirements, covering essential requirements of article 3.2 of the R&D
Directive”.
(ERM); Base Stations (BS) and User equipment (UE) for IMT-2000 third-generation
cellular networks - Part 3: Harmonized standard for IMT-2000 CDMA Direct Spread
(UTRA FDD) (BS) covering essential requirements of article 3.2 of the R&D
Directive”.
• 3GPP TS 25.141:”3rd Generation Partnership Project; Technical Specification Group
Radio Access Networks; Base station conformance testing (FDD)”.
• FCC Code of Federal Regulations (CFR) 47, Part 22 “Public Mobile Services”.
• FCC Code of Federal Regulations (CFR) 47, Part 24 “Personal Communication
Services”.
LTE
• ETSI EN 301 908-14: IMT-2000 Evolved Universal Terrestrial Radio Access (E-
UTRA) (BS). The scope of part 14 is Base Stations for E-UTRA as defined by ETSI
(3GPP). Requirements and test suites are also referenced from Part 3 for E-UTRA
FDD and from Part 7 for E-UTRA TDD.
• 3GPP TS 36.141:3rd Generation Partnership Project; Technical Specification Group
Station (BS) conformance testing
Safety
• IEC 60950-1/ EN 60950-1: “Safety of Information Technology equipment including
electrical business equipment”.
• EN 50383: Basic standard for the calculation and measurement of the
electromagnetic field strength and SAR related to human exposure from radio base
stations and fixed terminal stations for wireless telecommunications system (110
MHz - 40 GHz).
• EN 50384: Product standard to demonstrate the compliance of radio base stations
and fixed terminal stations for wireless telecommunications systems with the basic
restrictions or the reference levels related to human exposure to radio frequency
electromagnetic fields (110 MHz - 40 GHz) - Occupational.
• EN 50385: Product standard to demonstrate the compliances of radio base stations
and fixed terminal stations for wireless telecommunications systems with the basic
restrictions or the reference levels related to human exposure to radio frequency
electromagnetic fields (110 MHz - 40 GHz) - General public.
• UL 60950-1: “Safety of Information Technology Equipment”.
• EN/IEC/UL 60950-22: Information technology equipment. Safety. Part 22: Equipment
installed outdoors.
32 DN0951839 Issue: 01A

6 Site requirements
6.1 Planning and preparing the site
Purpose
Before installing the BTS, the site must be properly surveyed and prepared, and all
required external connections must be correctly installed. Any special requirements for
installation must also be identified during the survey.
Steps
1 Check that the BTS can be installed safely:
• The site is accessible, adequately lit and safe for working.
• Safety distance calculations are made and taken into account.
• The site is prepared according to drawings.
• The site survey is complete.
• The Site Survey Report is available.
• The site is clean.
• Product delivery is complete.
• All wiring is done in accordance with national electric code.
• Needed equipment is available as defined in the Site Survey Report.
• Sufficient service clearances are available.
2 Verify that the following external cabinet connections are available:
• Grounding busbar,
• Mains power (AC or DC, depending on the site),
• Transmission connection point.
6.2 General site requirements
Ensure that the following BTS site requirements are met:
1. All required documentation is available, for example, site-specific installation
instructions.
2. When radio link transmission is used, the line-of-sight to the far end radios has been
ensured.
3. External connections for the cabinet are available: site grounding point, mains power
(AC or DC according to the site), and transmission connection point. Furthermore,
AC or DC distribution panel and AC electric are available for power tools.
4. Main grounding (earthing) is installed and tested.
5. Floor or wall surface is even (installation base flatness requirement is 2 mm (0.08
in.).
6. Wall or pole at the BTS site is strong enough to withstand the weight of the BTS.
7. Wall or pole at the BTS site is strong enough to meet earthquake requirement
Telcordia GR-63-CORE Zone 4 (only applicable in earthquake areas).
Flexi Multiradio BTS LTE Installation Site Requirements Site requirements
Issue: 01A DN0951839 33

8. Pole at the BTS site is strong enough to withstand the wind load.
9. The BTS is not taken out of its delivery package until the site construction work is
finished and the site is clean and dry.
10. Site security is established so the BTS and other units can remain undisturbed at the
site.
11. Make sure you can take the BTS to the installation site. For example, in roof top
installations, the hole through which you take the BTS to the roof must be large
enough.
6.2.1 Indoor site requirements
If installing the BTS to an indoor site, ensure that the following indoor BTS site
requirements are met:
• Door and lock to site room are properly installed and operational (recommended).
• Access to the site is secure.
• The site is adequately lit.
• Feeder entry hole and cable rack for feeder and power cables are ready, if needed.
• Heater, or air conditioner, is installed and operational, if needed. This depends on the
heat emission and the environment.
6.2.2 Choosing site for the Remote Radio Heads
f CAUTION! Risk of personal injury.
The unit might have very hot surfaces when operating in hot environments.
The unit should be installed in a restricted access location so that unintentional
touch of the unit hot surface is blocked.
The Remote Radio Head is a heat dissipating unit and so it runs at a temperature
notably above the local ambient. If the temperatures of the unit become excessive the
unit runs less efficiently, therefore the unit should always be mounted vertically as
detailed in these instructions, in an area with unrestricted airflow/ventilation. Solar
radiation can also significantly increase the temperature of the unit and so should be
taken into consideration when choosing a location for the unit. In particular it is
recommended that the finned surfaces should be shaded from the sun. Ideally in the
Northern Hemisphere the unit should be located on a North facing wall where it is
shaded from the sun; or in a location where an adjacent object or building offers similar
shade. In the Southern hemisphere the unit is should ideally be located on a South
facing wall. In areas where the temperature can be considered to be moderately warm,
or the ambient temperature could reach temperatures of approaching 30°C (86ºF) or
above and shade is not given to the unit by any of the adjacent walls or buildings then a
solar shield should be fitted to the unit.
Site requirements Flexi Multiradio BTS LTE Installation Site Requirements
34 DN0951839 Issue: 01A

6.3 Feederless site and Distributed site solution
requirements
6.3.1 NSN SFPs properties
Table 23 3 Gbps SFPs properties
Property SFP type (sales code)
FOSG (472063A) FOSA (471546A) FOSL (472807A)
Link length Up to 300 m over OM3
up to 200 m over OM2
using Standard Multi Mode ITU-T
G651.1 or IEC 60793-2-10
(A1a,b/A1a.2)
Up to 15 km (recom-
mended above 2 km)
Up to 2 km
using Standard Single Mode, ITU G.652 or IEC
60793-2 Type B1.1 or IEC 60793-2 Type B1.3 or
corresponding fibre
Link speed 3.072 Gbit/s
Center Wave length 850 nm 1310 nm ± 50 nm 1310 nm ± 50 nm
Total allowed attenuation for
the link
3 dB 9.5 dB 3 dB
Transmitter output power
(OMA)
247 µW 290 µW 150 μW
Receiver sensitivity (OMA) 61 µW 24 µW 23 µW
Extinction ratio (min.) N/A 6 dB 6 dB
Max. transmission delay 1 µs (200m) 75 µs 10 µs
Max. return loss minimum return loss 12 dB
LC duplex optical connector
at SFP side
ANSI TIA/EIA-568-B.1, TIA/EIA604-10 (FOCIS 10), IEC 61754-20
Operating temperature -40°C - +80°C (-40°F - +176°F)
Installation temperature -20°C - +60°C (-4°F - +140°F)
Minimum bend radius 10x outside diameter (50 mm)
Minimum crush resistance 750 N/cm
Minimum tensile load 600 N
Minimum connector pull ten-
sion force
200 N
Minimum Flammability UL94V-1, OFRN UL-1666 Riser
Issue: 01A DN0951839 35

Table 23 3 Gbps SFPs properties (Cont.)
FOSG (472063A) FOSA (471546A) FOSL (472807A)
Minimum UV protection UV resistant
Weather protection IP 65 with NSN connector IP-shield and cable
Table 24 6 Gbps SFPs properties
FOSH (472579A) FOSI (472580A) FOSN (472811A)
Link length Up to 300 m over OM3
up to 200 m over OM2
using Standard Multi Mode ITU-T
G651.1 or IEC 60793-2-10
(A1a,b/A1a.2)
Up to 15 km (recom-
mended above 2 km)
Up to 2 km
using Standard Single Mode, ITU G.652 or IEC
60793-2 Type B1.1 or IEC 60793-2 Type B1.3 or
corresponding fibre
Link speed 6.144 Gbit/s
Center Wave length 850 nm 1310 nm ± 50 nm 1310 nm ± 50 nm
Total allowed attenuation for
the link
3 dB 9.5 dB 3 dB
Transmitter output power
(OMA)
400 μW 318 μW 550 μW
Receiver sensitivity (OMA) 71 μW 36 μW 66 μW
Extinction ratio (min.) 3 dB 3.5 dB 3.5 dB
Max. transmission delay 1 µs (200 m) 75 µs 10 µs
Max. return loss minimum return loss 12 dB
LC duplex optical connector
at SFP side
ANSI TIA/EIA-568-B.1, TIA/EIA604-10 (FOCIS 10), IEC 61754-20
Operating temperature -40°C - +80°C (-40°F - +176°F)
Installation temperature -20°C - +60°C (-4°F - +140°F)
Minimum bend radius 10x outside diameter (50 mm)
Minimum crush resistance 750 N/cm
Minimum tensile load 600 N
36 DN0951839 Issue: 01A

Table 24 6 Gbps SFPs properties (Cont.)
FOSH (472579A) FOSI (472580A) FOSN (472811A)
Minimum connector pull ten-
sion force
200 N
Minimum Flammability UL94V-1, OFRN UL-1666 Riser
Minimum UV protection UV resistant
Weather protection IP 65 with NSN connector IP-shield and cable
6.3.2 DC cable lengths of the Feederless Site Concept
This guidance is intended for reference only and applies to copper conductors/cables
only. Site designer is responsible to select proper cabling and circuit protection. Also take
into account any national requirements that might apply.
Assumptions:
• Maximum currents at cables are defined according to the IEC 60364-5-52:2009
(Table B.52.2 column 6, cable with 2 loaded wires, Installation method C)
• Wire sizes according to IEC 60228.
• Maximum Distance:
– is calculated for the whole power chain.
Power Source (BBU) to Remote RF (not taking into account possible chaining of
BBU Power source → FSM/PDU → FRM)
– is assumed with guaranteed/maximized BBU time, that is voltage drop in cable is
limited to 6,0V.
– is calculated with worst case conditions, that is the lowest operational input
voltage.
g Note:
• Cable Short circuit current maybe limiting cable maximum length. This is
depending of selected distribution Circuit Breaker. Site designer is
responsible to calculate end select proper circuit protection case by case.
• Installation method effects to the maximum allowed conductor current
(Inside insulation, Inside conduit, surface installation, ground installation,
etc.).
• National variations exist and have to be taken into account by site designer.
• Use of optional sales items (like FSES) might have impact to voltage drop
calculations.
• HW Limit is 25mm². If thicker cable is needed, then external jumpering is
needed.
• NSN recommended DC feeder cable type is MCCMK or MCMK shielded
cable. An equivalent locally supplied DC cable might be used, it is also
recommended to use shielded twisted pair cable type.
Issue: 01A DN0951839 37

Figure 7 DC cable lengths of the Feederless Site Concept
Calculation principle
LVD = 42 V (maybe also higher if PLVD used)
∆UAB max = 6 V assumed for this calculation
UA = -42...-57 VDC
UB = -40,5...-57 VDC (extended to -36,0 VDC = worst case)
ILOADmax @ 36 V
ILOADnom @ 48 V
PBBU = PLOAD + Cable loss
g In case additional losses exist (for example PDU) they must be taken in to
account in calculation!
Conductors maximum current and Circuit protection
Table 25 Conductors maximum current and circuit protection
Conductor
size
Maximum
fuse size *
Maximum
conductor
current
6 mm2 40 A 46 A
10 mm2 50 A 63 A
16 mm2 63 A 85 A
25 mm2 100 A 112 A
35 mm2 125 A 138 A
50 mm2 150 A 168 A
* Cable short circuit current is limiting maxi-
mum length! Site designer is responsible to
calculate and select proper breaker size.
Cable maximum currents:
(for more information, see IEC 60364-5-52, Annex A and B)
• Table B.52.1 – Installation reference methods forming basis of tabulated current-
carrying capacities (for this calculation). Used Installation method C: Single core or
multicore cable on a wooden wall.
• Table B.52.2 – Current carrying capacities in amperes for methods of installation in
Table B.52.1
38 DN0951839 Issue: 01A

Circuit protection:
(For more information, see IEC 60364-4-43, Clauses 433 and 434)
Multiple factors effect the Definition of circuit protection together with selected cable and
therefore has to be analyzed case by case. Following rules are to be fulfilled:
Where:
IB: designed circuit current
IN: rated current of protective device
IZ: continuos current carrying capacity of cable
I2: current ensuring effective operation in the conventional time of the protective device
IT: maximum loading of a circuit according to standard
C1, C2,...: Correction factors depending of installation circumstances
g Note: Cable short circuit current is limiting maximum length!
EXAMPLE:
Issue: 01A DN0951839 39

Figure 8 Example DC Power Feeder Graph
• For 1000W load maximum cable length is 125m (in ambient 70ºC).
• 1000W load causes 95 W power loss at 125 m long cable.
• 1000W load with 125 m cable need 1095 W from power source.
g Dotted line express power loss in a cable with given load (right axis).
AWG size (in brackets) is the next bigger size compared to the square
millimeter size.
DC Power Feeder graphs
Figure 9: 50 mm2 cable length as function of load,
Figure 13: 10 mm2 cable length as function of load, and
Figure 14: 6 mm2 cable length as function of load shows recommended operational area
for different lengths cables.
40 DN0951839 Issue: 01A

Figure 9 50 mm2 cable length as function of load
Issue: 01A DN0951839 41

42 DN0951839 Issue: 01A

Issue: 01A DN0951839 43

44 DN0951839 Issue: 01A

Issue: 01A DN0951839 45

Circuit protection analysis (example):
Case:
• Load current IB=40 A
• Cable 25 mm2, length 100 m, installed on the wall, for the whole length
• Maximum current for cable IZ=112 A
• Selected Breaker 50 A, Curve B
Analysis:
• I2 for Breaker = 1.45 x IN => 1,45 x 50 A = 72.5 A
• I2 for Cable = 1.45 x Iz => 1.45 x 112 A = 162 A
• IEC 60364-4-43 Clause 433 Conditions are satisfactorily met:
– IB ≤ IN ≤ IZ => (40 A < 50 A < 112 A) -> OK
– I2 ≤ 1.45 × IZ => (72.5 A < 1.45 x 112 A) -> OK
• Short circuit analysis:
Calculated Short circuit current for 100 m Cable @ 70°C is 275 A
=> 5.5 x IN => Provides disconnect in less than 0.2 s
46 DN0951839 Issue: 01A

6.3.3 DC cabling principles and shielding
The NSN recommended DC feeder cable type is MCCMK or MCMK shielded cable. An
equivalent locally supplied DC cable might be used. Make sure that both ends of the
connection to a Flexi RF Module or System Module are IP65-protected.
DC cable extension:
• There is an additional NSN IP55 2 m DC cable in the FSEC sales package. By
cutting both cables in one end and using IP55 protection to both the RF Module and
System Module they can be used for extending the DC cable distance.
• A long DC cable needs to be shielded and grounded.
• Connection of the long DC cable and NSN IP55 cable is recommended to be done in
an IP55 outdoor weather protected space, for example in Flexi External OVP box
(FSEC).
• The FSEC clamping range is from 19 mm to 28 mm DC cable diameters.
t If the diameter of the cable is smaller than 19 mm (0.75 in.), use either self-
fusing tape or heat-shrinkable tube to increase the cable diameter to 20mm-
21mm (0.79-0.83 in.) to fulfil the IP67 requirement. The distance between the
expansion and the stripped part of the cable must be at least 10 cm (4 in.).
Table 26 NSN requirements for a shielded, locally sourced DC cable (3U RF
Module), T=20ºC (68ºF)
Cable type mm2 R (Ohm/km) L (mH/km)
Shielded
twisted pair
10 1.83 -
16 1.15 0.3
25 0.727 0.26
35 0.524 0.24
g In feederless and distributed site installations, Ohm's law cannot be applied
alone because inductance must also be taken into account.
6.4 Pole installation requirements
The optional pole mounting kits VMPB and FPKA/FPKC enable Flexi Multiradio BTS
installation on a pole 60-300 mm in diameter (60-120 mm (2.4-4.7 in.) with the FPKA and
60-300 mm (2.4-11.8 in.) with the FPKC/VMPB). Up to four 3U modules can be fitted on
either pole mounting kit, and up to three Remote Radio Heads can be fitted on one
FPKA.
• Up to four 3U modules can be fitted on VMPB and FPKA/FPKC.
• Up to three Remote Radio Heads can be fitted on one FPKA.
• Up to two 2x60 W RRHs can be installed with an FMFA on the same FPKA. Only one
2x40 W RRH can be installed with an FMFA on the same FPKA.
• A 2x60 W RRH can be installed next to an FMFA on an FPKA. A 2x40 W RRH
cannot be installed next to an FMFA on an FPKA.
Issue: 01A DN0951839 47

• If there is an FMFA installed on the pole mounting kit, RRH can be installed next to
FMFA.
• If two FMFAs are installed on a pole mounting kit, RRH can be installed next to
FMFA.
f Excess torsion damages the casings. In wall and pole installation, do not install
more than two modules per plinth.
g Modules installed outdoors can be left non-operational for a maximum of one
week. The fluctuation of temperature during one day can be 30°C (86°F) at the
maximum.
When installing modules on a pole, make sure that the pole at the BTS site is strong
enough to withstand the weight of the BTS, to meet earthquake requirement Telcordia
GR-63 core Zone 4, and the wind load requirement.
Figure 15 Wind load calculations, side view
DN7083024
When the wind area is as in the Wind load calculations, side view figure, the area value
used for wind load calculations is 0.33 m2.
48 DN0951839 Issue: 01A

Figure 16 Wind load calculations, front view
4 3 1 2
DN7083036
When the wind area is as in the Figure 16: Wind load calculations, front view, the area
for wind load calculations depends on the number of installed modules. For more
information, see Table 27: Area for wind load calculations.
Table 27 Area for wind load calculations
Number of modules Area
1 0.12 m2
2 0.18 m2
3 0.30 m2
4 0.36 m2
Flexi Mounting Shield 6U (FMSA)
Table 28 Area for wind load calculations (FMSA)
Mounting shield Area
FMSA 0.45 m2
6.5 Floor installation requirements
See Figure 17: Anchoring the plinth on the floor and
Figure 18: Anchoring the plinth on base with maintenance space in the back for floor
installation requirements. Option A is for stack configuration.
Issue: 01A DN0951839 49

Figure 17 Anchoring the plinth on the floor
50 DN0951839 Issue: 01A

Figure 18 Anchoring the plinth on base with maintenance space in the back
6.6 Wall installation requirements
The optional mounting kit (FMFA) enables Flexi Multiradio BTS 3U module installation on
a wall. There is a separate wall mounting kit available for the Remote Radio Head.
The following requirements must be met and inspected by a qualified person before
mounting the BTS:
• It must be ensured that the installation wall is strong enough to bear the weight of the
BTS in any condition.
• The wall must meet the earthquake requirement Telcordia GR-63 CORE (only
applicable in earthquake areas).
• The 3U module fixing screws (4 pcs) and module casing must be tightened to 5 Nm
to meet the earthquake requirement Telcordia GR-63 CORE, Vibrational
requirements for earthquake Zone 4.
• The maximum number of 3U modules per plinth is two.
• 3U modules must be installed in horizontal alignment, cabling direction up and down.
• 3U module bottoms must be installed facing the wall.
• For the Remote Radio Head, only vertical mounting is allowed.
• It is not recommended to install Remote Radio Head modules inside an enclosed
space without proper ventilation or climate control, as cooling is done through
convection method.
6.7 Module clearances
The minimum clearances around the modules are listed in
Table 29: Required minimum clearances.
Issue: 01A DN0951839 51

Table 29 Required minimum clearances
Property Value
Front space 600 mm (23.6 in. front maintenance
space)
Back space 40 mm (1.6 in. intake air space)
200 mm (7.9 in. to remove back cover and
change fan)
Top space 30 mm (1.2 in.)
Space on both sides 75 mm (3.0 in.) with front covers
Space on both sides (if two base stations
are installed side by side on floor or wall)
100 mm (3.9 in.)
t Fans can also be changed without minimum clearances, with no back access,
but this might need switching off some units in addition to the faulty module.
6.8 Remote Radio Head clearances
Figure 19: Minimum RRH clearances for cooling purposes shows the minimum
clearances for cooling purposes.
The minimum front space clearance for maintenance purposes is 900 mm (35.43 in.).
Side space clearance is 10 mm (0.39 in.).
Figure 19 Minimum RRH clearances for cooling purposes
W
H
D
1000mm
(39.37in.)
10mm
(0.39in.)
sideviewfrontview
10mm
(0.39in.)
1000mm
(39.37in.)
25mm
(0.98in.)
H is module height excluding the mounting brackets.D is the module depth including the
mounting brackets.
It is not recommended to install RRH modules inside an enclosed space without proper
ventilation or climate control.
g For proper cooling, it is not recommended to vertically align RRHs with less
than 1 m top or bottom clearance. Staggered mounting is preferred. Vertical
alignment is never allowed in enclosed spaces.
52 DN0951839 Issue: 01A

6.9 FPAD clearances
Figure 19: Minimum RRH clearances for cooling purposes shows the minimum
clearances for cooling purposes.
Figure 20 FPAD clearances for cooling purposes
W
H
D
>120mm
(4.72in.)
>20mm
(0.79in.)
sideviewfrontview
>20mm
(0.79in.)
>50mm
(1.97in.)
No
effect
H is module height excluding the mounting brackets.D is the module depth including the
mounting brackets.
g FPAD must be installed in vertical position in order to allow efficient natural
convection cooling. Staggered mounting is preferred. Vertical alignment is never
allowed in enclosed spaces.
6.10 Flexi Cabinet for Indoor (FCIA) clearances and
anchoring holes
See Cabinet clearances, Clearances around FCIA,
FCIA fixing points, minimum clearances, and
FCIA fixing points with maintenance space in the back for required clearances around
Flexi Cabinet for Indoor (FCIA).
Table 30 Cabinet clearances
Property Required clearance
Front of the cabinet 900 mm (35.4 in.)
Behind the cabinet 50 mm (2.0 in.)
Behind the cabinet (with maintenance
space in the back) 1)
500 mm (19.7 in.) with side access
Space on the door hinges side of the cabi-
net
50 mm (2.0 in.)
Door swing radius 597 mm (23.5 in).
Above the cabinet 300 mm (11.8 in.)
Issue: 01A DN0951839 53

1) For maintenance space in the back, side access of 500 mm (19.7 in.) is also needed.
The floor must be level. The level tolerance is ± 5 mm (0.19 in.) for the base area
immediately under the cabinet.
A 50 mm (2.0 in.) backstop is included in the cabinet delivery. The clearance behind the
cabinet is measured from the back wall of the cabinet.
When installing 3rd party 19" rack equipment in the FCIA, the distance from the rack
fixing space to the inner surface of the door must be 102.5 mm (4.0 in.).
For the dimensions of the FCIA cabinet, see Flexi Cabinet for Indoor (FCIA) dimensions
and weight.
Figure 21 Clearances around FCIA
Figure 22 FCIA fixing points, minimum clearances
54 DN0951839 Issue: 01A

Figure 23 FCIA fixing points with maintenance space in the back
Anchoring holes
The cabinet is anchored to the ground using four M10 or M12 bolts. The optional
mounting holes are available for backup purposes, in case the official holes cannot be
used for some reason.
6.11 Flexi Cabinet for Outdoor (FCOA) clearances and
anchoring holes
See Table 31: Cabinet clearances and
Figure 24: Cabinet clearances and anchoring holes for required clearances around Flexi
Cabinet for Outdoor (FCOA).
Table 31 Cabinet clearances
Behind the cabinet (one cabinet installed) 0 mm/in.
Behind the cabinet (several cabinet in-
stalled in a row)
100 mm (4 in.)
Behind the cabinet (with back access) 500 mm (19.7 in.)
Issue: 01A DN0951839 55

Table 31 Cabinet clearances (Cont.)
Behind the cabinet (with air filter and ca-
bles routed through back)
1000 mm (39.3 in.)
Behind the cabinet (with air filter and ca-
bles routed through side or through bot-
tom)
450 mm (17.7 in.)
Door opening direction 50 mm (2 in.)
Door opening with wind plate 80 mm (3.2 in.)
The floor must be level. Requirements for the base are as follows:
• Aberration for plane = 1 mm (0.04 in.)
• Maximum inclination = 2 mm/metre
When installing 3rd party 19" rack equipment in the FCOA, the distance from the rack
fixing space to the inner surface of the door must be 135 mm (5.3 in.).
For the dimensions of the FCOA cabinet, see Flexi Cabinet for Outdoor (FCOA)
dimensions and weight.
Figure 24 Cabinet clearances and anchoring holes
Anchoring holes
The cabinet is anchored to the ground using four M12 bolts. Optional four holes are
available for backup purposes, in case the actual holes cannot be used for some reason.
56 DN0951839 Issue: 01A

Cable entry
For the location of the FCOA cabinet bottom cable entry, see
Figure 25: FCOA cabinet bottom cable entry.
Figure 25 FCOA cabinet bottom cable entry
6.12 Flexi Mounting Shield (FMSA and FMSB)
clearances and anchoring holes
See Table 32: FMSA clearances and Table 33: FMSB clearances for required clearances
around Flexi Mounting Shields (FMSA/FMSB).
Table 32 FMSA clearances
space in the back)
200 mm (7.9 in.)
Space for cables outside the cabinet
(above/underneath/on the side)
150 mm (5.9 in.)
Table 33 FMSB clearances
space in the back)
200 mm (7.9 in.)
Space for cables outside the cabinet (on
the side)
150 mm (5.9 in.)
Issue: 01A DN0951839 57

Table 33 FMSB clearances (Cont.)
See Figure 26: FMSA fixing points and Figure 27: FMSB fixing points for the fixing point
locations.
Figure 26 FMSA fixing points
DN70335066
Lowerbracket
Upperbracket
623mm(24.5in)
185mm
(7.3in)
185mm
(7.3in)
118.5mm
(4.7in)
558.5mm(22.0in)
688mm(26.3in)
fixingpoints
o10mm
40mm (1.6in)
forairintake
200mm (7.9in)
formaintenance
fromtheback
58 DN0951839 Issue: 01A

Figure 27 FMSB fixing points
DN70316252
Frontside
359mm(14.1in)
106.5mm
(4.2in)
149.5mm
(5.9in)
300mm (11.8in)
40mm(1.6in)
forairintake
fixingpoints
o18mm
200mm(7.9in)
formaintenance
fromtheback
Issue: 01A DN0951839 59

7 Power requirements
7.1 Site earth and BTS grounding requirements
BTS site grounding is divided into two contexts: site earthing and site equipment
grounding.
To protect the BTS from damaging over voltages through antenna equipment,
communication cables, or power supply lines, grounding cabling must be planned and
installed before the installation of the base station. To avoid interference, it is
recommended that large grounding systems are designed case-specifically.
The function of the site earth is to convoy the lethal and hazardous voltages and electric
currents from the site main grounding point (main grounding busbar) to the earth.
The impedance of the earth connection should be as low as possible:
• The earthing (grounding) resistance target of the BTS site is ≤10 Ω. If it is not
possible to reach this target because of the difficult conditions, for instance in areas
such as solid rocks or dry desert, the earthing (grounding) resistance can be max.
150 Ω.
• The cross-sectional area of the Main Earthing Conductor should not be smaller than
live (L) and neutral never less than 6 mm2 (10 AWG), recommended size is 16 mm2
(6 AWG). For NEBS installations, 16 mm2 (6 AWG) or higher is required.
Site equipment grounding is required to ensure personnel safety and to avoid
electrostatic discharge which can damage the equipment.
An AC power plug with a protective earth (PE) connection is not sufficient. Grounding
must have a fixed, non-removable connection.
BTS DC power input must be floating -48 VDC, or positive grounded. Note that the fuse
protection does not work with negative grounding. In a +24 VDC system, a Flexi Power
DC/DC Module (FPDA) or a similar safety-approved DC/DC converter must be used to
convert the negative grounded +24 VDC to floating -48 VDC.
g Follow local requirements for earthing (grounding). The principles and
requirements vary in different countries.
Observe the following recommendations when planning the BTS grounding:
• Grounding cable cross-section has to be more than any of AC or DC power feeding
cable cross-section.
• The grounding cable is connected with screws to the BTS mains grounding point.
• The grounding cable must be connected to a main grounding busbar with a minimum
of 6 mm2 (10 AWG) grounding cable.
• Route the grounding cables as directly as possible from the equipment to the
grounding point. Avoid unnecessary loops and sharp bending of the grounding cable.
The grounding cables should not be run parallel with power cables.
• The external antenna feeders must also be grounded according to the local
legislation if the antennas are exposed to lightning.
• The BTS is suitable for installation in a Common Bonding Network (CBN), Isolated
Bonding Network (IBN) or both.
Power requirements Flexi Multiradio BTS LTE Installation Site Requirements
60 DN0951839 Issue: 01A

7.2 Mains power requirements
f WARNING!
Danger of lethal voltages.
Make sure that the mains power breaker is off, and that the cabinet is properly
earthed (grounded), before connecting or removing any mains power supply
cables from the BTS cabinet.
At the site there must be a main switch for disconnecting the BTS mains power. The
disconnecting device should disconnect both input supply poles simultaneously.
Table 34 Permitted operating voltage
Property Nominal operating voltage Permitted operating voltage
DC voltage 48 VDC 40.5 to 57.0 VDC
AC voltage with op-
tional FPMA
200 - 240 VAC 184 to 276 VAC (45 - 66 Hz)
DC voltage with op-
tional DC Module
24 VDC 18 to 32 VDC
DC return connections can be isolated DC return (DC-I) or common DC return (DC-C).
Check the power consumption. If the power demand exceeds 30A and you use a 30A
source such as an integrated power distribution unit (PDU) or System Module Power
Output port with 30A output capability, then it is recommended to use the dual power
cable FPCA (472806A) with the PDU or System Module Power Output port.
See Cabling Flexi Multiradio BTS LTE for instructions on how to connect the dual power
cable.
g Note that there are some variations in input voltages between different RF
variants. For more information, see
RF Module and Remote Radio Head power requirements in
Flexi Multiradio BTS LTE RF Module and Remote Radio Head Description.
7.2.1 Circuit breakers
General guidelines for circuit breakers are provided below. The maximum power
consumption in amps is smaller than the circuit breaker in amps, and the circuit breaker
is smaller than the allowed current capacity of the cable in amps.
• Slow D type (10 In up to 20 In) is recommended to avoid tripping in rush current or
minor lightning surges.
• Circuit breaker interrupt rating is recommended for exceeding maximum short circuit
(breaking) capacity expected from the power source.
• Voltage rating for overvoltage protection device should also be considered.
• It is recommended to calculate circuit breaker values based on maximum power
input for each RF/RRH Module with 10% margin added. This accounts for worst case
operating conditions, future expansion and/or MHA/RETs.
Always follow local regulations.
Installations with the FSMF frontpanel DC interface port (without optional FPFD PDU
installed) require a dedicated fuse. The fuse size should be between 20 A and 30 A.
Flexi Multiradio BTS LTE Installation Site Requirements Power requirements
Issue: 01A DN0951839 61

7.2.2 FPMA Battery backup times
Flexi BTS uses 48 VDC power. In a BTS site with AC feed only, Flexi Power Module
(FPMA) is required to convert AC to DC. Flexi Power Module (FPMA) consists of
mechanics, AC terminal, and four slots for AC/DC sub-module (FPAA) or battery sub-
module (FPBA/B).
Two FPMAs can be installed in a stack to support FPAA and FPBA/B operating in
parallel.
Table 35: Battery backup times shows the battery backup times depending on
configuration and load scenario.
Table 35 Battery backup times
FPMA Estimated typical battery backup time in 23°C for new battery [min.]
Single FPMA Dual FPMA (stacked)
Rectifying
capacity [W]
FPAA
(rectifier)
1 x FPBA/B
(battery)
2 x FPBA/B
(battery)
3 x FPBA/B
(battery)
4 x FPBA/B
(battery)
5 x FPBA/B
(battery)
6 x FPBA/B
(battery)
250 1 32 64 96 128 160 192
500 1 16 32 48 64 80 96
750 1 11 22 33 44 55 66
1000 1 8 16 24 32 40 48
1250 2 - 13 19 26 32 38
1500 2 - 11 16 21 27 32
1750 2 - 9 14 18 23 27
2000 2 - 8 12 16 20 24
2250 3 - - 11 14 18 -
2500 3 - - 10 13 16 -
2750 3 - - 9 12 15 -
3000 3 - - 8 11 13 -
3250 4 - - - 10 - -
3500 4 - - - 9 - -
3750 4 - - - 9 - -
4000 4 - - - 8 - -
62 DN0951839 Issue: 01A

g FPBA/FPBB maximum charge and heating power is 100 W per battery.
The “per battery” charge power needs to be taken into account and subtracted
from the available rectifying capacity, thus reducing the power available for the
BTS.
In redundant (n+1) configurations an extra FPAA provides rectifying redundancy
and, additionally, takes care of battery charging.
7.2.3 FPMA AC wiring and Fuse requirements
Table 36 Fuse and wire cross section requirements single phase AC
# of FPAA in FPMA Fuse sieze (A) for single
phase 240 Vac
Wire cross section
1 6 3 x 1.5 mm2
2 10 3 x 1.5 mm2
3 16 3 x 2.5 mm2
4 20 3 x 4 mm2
Table 37 Fuse and wire cross section requirements three phase AC
FPMA Fuse size (A) for 3 phase 240 Vac
Wire cross section
FPAA 1 1st phase 10 5 x 1.5 mm2
FPAA 2
FPAA 3 2nd phase 6
FPAA 4 3rd phase 6
Table 38 Fuse and wire cross section requirements three phase AC for dual FPMA
dual FPMA #1 dual FPMA #2 Fuse size (A) dual FPMA for 3
phase 240 Vac
Wire cross
section
FPAA 1 FPAA 5 1st phase 20 5 x 4 mm2
FPAA 2 FPAA 6
FPAA 3 FPAA 7 2nd phase 10
FPAA 4 FPAA 8 3rd phase 10
Issue: 01A DN0951839 63

7.3 RF Module and RRH DC cable requirements
7.3.1 DC cable requirements for 80 W RF Modules
The DC cable is not included in the 80 W RF Module delivery. 48 VDC power can be fed
from a System Module or directly from an external power source.
• Only single power cable is needed with FXCB/FXDB regardless of System Module.
• If FXEB/FXFC/FRGT is used with FSMC/D/E or FPFC/FPFD (30A PDU), then the
rules in Table 39: DC Cable Requirements for 80 W RF Modules apply:
Table 39 DC Cable Requirements for 80 W RF Modules
Total Configured
output power
RET/MHA Minimum
voltage
Power Cable
<= 180 W Any Any Single
> 180 W Yes < 46.5 Dual
> 180 W Yes >= 46.5 Single
> 180 W No < 41.5 Dual
> 180 W No >= 41.5 Single
Requirements if power is supplied from an external source
The following requirements apply if power is fed from an external power source:
• The allowed diameter of shielded or jacketed cables is 6-25 mm (0.24-1 in.).
• The allowed cross section of individual DC wires is 6-25 mm2 (10-4 AWG) at the DC
terminal. It is recommended that 25 mm2 (4 AWG) wires are capped to avoid loose
strands. If thicker DC wires are required, then an FSEC/FSES or other IP65 DC
distribution box is required to reduce the cable thickness at the module.
• Recommended DC cable lengths, thicknesses, and type are provided in the section
Feederless site and Distributed site solution requirements.
• The DC connector has three screw terminals. The outer terminals are for (+) and (-)
wires. The middle terminal is for grounding the shielded DC cable braid.
7.3.2 DC cable requirements for 6TX 40W RF Modules
The DC cable is not included in the 6TX 40 W RF Module delivery. 48 VDC power can
be fed from an external power source.
• If 6TX 40 W RFM is used with FSME or FPFC/FPFD (30 A PDU), then the rules in
Table 40: DC cable requirements for 6TX 40W FRMC, FRPA, FRPB Modules and
Table 41: DC cable requirements for 6TX 40W FRHC, FRHF Modules apply:
64 DN0951839 Issue: 01A

Table 40 DC cable requirements for 6TX 40W FRMC, FRPA, FRPB Modules
Total Configured
output power
RET/MHA Minimum DC
Voltage voltage (at
FRM input)
Power Cable
<= 180 W No Any Single
<= 180 W Yes Any Single
> 180 W Yes <44.3 Dual
> 180 W Yes >44.3 Single
> 180 W No <41.3 Dual
> 180 W No >41.3 Single
Table 41 DC cable requirements for 6TX 40W FRHC, FRHF Modules
Total Configured
output power
RET/MHA Minimum DC
Voltage voltage (at
FRM input)
Power Cable
<= 180 W No Any Single
<= 180 W Yes Any Single
> 180 W Yes <48.2 Dual
> 180 W Yes >48.2 Single
> 180 W No <45.2 Dual
> 180 W No >45.2 Single
Requirements if power is supplied from an external source
The following requirements apply if power is fed from an external power source:
• The allowed diameter of shielded or jacketed cables is 6-25 mm (0.24-1 in.).
• The allowed cross section of individual DC wires is 6-25 mm2 (10-4 AWG) at the DC
terminal. It is recommended that 25 mm2 (4 AWG) wires are capped to avoid loose
strands. If thicker DC wires are required, then an FSEC/FSES or other IP65 DC
distribution box is required to reduce the cable thickness at the module.
• Recommended DC cable lengths, thicknesses, and type are provided in the section
Feederless site and Distributed site solution requirements.
• The DC connector has three screw terminals. The outer terminals are for (+) and (-)
wires. The middle terminal is for grounding the shielded DC cable braid.
Issue: 01A DN0951839 65

7.4 BTS power consumption
7.4.1 Power consumption of various FDD Flexi Multiradio BTS
configurations
See
Table 42: Typical and maximum power consumptions for Flexi Multiradio BTS
configurations in LTE FDD for Flexi Multiradio BTS power consumption values at 48 VDC
input in 23°C.
For the FSME system module with FTIB transmission sub-module, add 110 W to
the given values.
For the alternative transmission sub-module FTLB, add 25 W in addition to the
given values.
configurations in LTE FDD
Configuration RF output
power per
sector
[W]
Estimated typical power
consumption [W] at 48 VDC
input in 23 °C
50% RF load 100% RF
load
1+1+1 SIMO 1TX 2RX 2600MHz
FSMF + 3-sector RF Module
60 931 1255
60 804 1034
80 809 1183
60 794 1068
1+1+1 MIMO 2TX 2RX 2600MHz
60+60 1737 2385
60+60 1483 1943
80+80 1493 2241
60+60 1463 2011
FSMF + 2TX RRH Module
40+40 1076 1442
66 DN0951839 Issue: 01A

configurations in LTE FDD (Cont.)
Configuration RF output
power per
sector
[W]
Estimated typical power
consumption [W] at 48 VDC
input in 23 °C
50% RF load 100% RF
load
FSMF + 2-sector RRH Module
40+40 1034 1316
60+60 1265 1721
40+40 947 1244
See the following table for Flexi Multiradio BTS power consumption values at 48 VDC
input in 23°C.
Basic typical conditions:
• GbE Ethernet transport used
• room temperature 23°C
• no MHA power feeding included
• no antenna tilting power feeding included
Flexi BTS site maximum power consumption consists of power feed to MHA + antenna
tilt. Up to 150 W higher power consumption can exist in extreme conditions and in BTS
output power overdrive situations. In possible short circuit cases (for instance, antenna
line), power consumption can momentarily be higher.
g The tolerance of the power consumption values is +/-10%.
The values do not include the optional cabinet (FCOA) and optional site support (FCSA)
power consumption.
The estimated maximum heat load can be assumed to be the same as the power
consumption values.
For the power consumption of Flexi Outdoor Cabinet fans FCFA, FCSA, and FCOS, see
Table 43: Power consumption of Flexi Outdoor Cabinet fans FCFA, FCSA, and FCOS.
Table 43 Power consumption of Flexi Outdoor Cabinet fans FCFA, FCSA, and
FCOS
FCFA FCSA FCOS
60 W clean 34 W at 23 °C 5 W minimum at 23 °C
100 W typical 94 W at 55 °C -
180 W dirty - 55 W at 55 °C
Issue: 01A DN0951839 67

The total power consumption of Flexi Cabinet Site Support Module depends on which
third-party configuration has been installed in the line terminal equipment space.
7.4.2 Power consumption of TDD Flexi RF Modules and RRHs
configurations
Table 44 Typical power consumptions for Flexi Multiradio BTS configurations in LTE
TDD
Configuration # of
cells
RF Power per
sector [W]
Estimated typical
power consumption
[W] at 48 VDC input
in 23°C, 68% TX
duty
1+1+1 MIMO 2TX 2300MHz
FSMF+FBBA + 6TX RF Module
3 10+10 518
1+1+1+1+1+1 MIMO 2TX 2300MHz
FSMF+2xFBBA + 2x6TX RF Module
6 10+10 911
FSMF+FBBA + 2x6TX RF Module
3 10+10+10+10 826
6 2x5+2x5+2x5+2x5 826
3 10+10 586
6 2x5+2x5 586
6 2x5+2x5+2x5+2x5 1047
6 2x5+2x5+2x5+2x5 1423
3 10+10+10+10+10+
10+10+10
1423
3x(FSMF+FBBA + 3x8TX RF Module)
6 2x5+2x5+2x5+2x5+
2x5+2x5+2x5+2x5
1758
FSMF+FBBA + 3x4TX RRH Module
3 30+30+30+30 1689
1+1+1+1+1+1 MIMO 4TX 2300MHz
FSMF+2xFBBA + 6x4TX RRH Module
6 30+30+30+30 3253
FSMF+FBBA + 3x4TX RRH Module
6 2x15+2x15+2x15+2
x15
1689
68 DN0951839 Issue: 01A

Table 44 Typical power consumptions for Flexi Multiradio BTS configurations in LTE
TDD (Cont.)
Configuration # of
cells
RF Power per
sector [W]
Estimated typical
power consumption
[W] at 48 VDC input
in 23°C, 68% TX
duty
2+2+2+2 MIMO 4TX 2300MHz
2x(FSMF+FBBA) + 4x4TX RRH Module
8 2x15+2x15+2x15+2
x15
2392
7.5 Lightning surge requirements
AC power port
Table 45 Switching and lightning transient requirements for AC power port
Spec Method Requirement
ETSI EN 301 489-1 EN 61000-4-5 ±2 kV line to ground (com-
mon), pulse 1.2/50µs,
Rs=(2Ω+ 10Ω)
±1.0 kV line to line (differ-
ential), pulse 1.2/50µs
(Rs=2Ω)
GR-1089 GR-1089 ±2 kV each phase conduc-
tor to green-wire ground,
pulse 1.2/50µs (Rs=2Ω)
±2 kV each phase conduc-
tor to neutral conductor,
pulse 1.2/50µs (Rs=2Ω)
±2 kV between neutral con-
ductor and green-wire
ground, pulse 1.2/50µs
(Rs=2Ω)
DC power port
Table 46 Surge immunity requirements for DC power port
- EN 61000-4-5 ±1 kV line to ground, pulse
1.2/50µs (Rs=2Ω)
±0,5 kV line to line, pulse
1.2/50µs (Rs=2Ω)
Issue: 01A DN0951839 69

RF antenna ports
Table 47 Lightning surge requirements for antenna ports
Spec Method Requirements
EN 61000-4-5 ±50 V…±500 V 1.2/50µs
(Rs=2Ω), pulses at the cen-
ter pin of the antenna con-
nector
IEC 62305-4 ±3 kA, 10/350µs pulses to
the center pin of the anten-
na connector
IEC 62305-4 ±20 kA, 10/350µs pulses to
the shield of the antenna
connector
Telecom ports
Table 48 Lightning surge requirements for telecom ports
ETSI EN 301 489-1 EN61000-4-5 ±1 kV line to ground, pulse
1.2/50µs, Rs = 2Ω for
shielded I/O and communi-
cation lines
EN61000-4-5 ±4 kV line to ground, pulse
1.2/50µs, Rs = 2Ω for
cation lines
Use only tested IP65 class cables with seals provided by NSN.
The cable shielding/drain wire must always be connected to the relevant ground pins
at the Digital Distribution Frame (DDF) or Network Termination Unit (NTU)/Network In-
terface Unit (NIU) as close as possible to avoid EMC interfering effects. Make sure ad-
ditional country-specific grounding regulations for transmission wiring installations are
followed!
The Flexi BTS Transmission interface is a SELV circuit and must not be directly con-
nected to TNV circuits.
The Flexi BTS interfaces can be connected to the telecommunication network only
through a Network Terminating Unit (NTU)/Network Interface Unit (NIU) that provides
overvoltage protection and the required isolation.
70 DN0951839 Issue: 01A

Alarm and control ports
Table 49 Surge requirements for alarm and control ports
ITU-T K.45 ITU-T K.44 ±1kV, 10/700µs (Rs=25Ω)
between center conductors
and shield
±4 kV, 10/700µs (Rs=25Ω)
between cable shield and
ground
Ethernet ports
Table 50 Lightning surge requirements for Ethernet ports
ETSI EN 301 489-1 EN61000-4-5 ±1 kV line to ground, pulse
1.2/50µs, Rs = 2Ω for
cation lines
EN61000-4-5 ±4 kV line to ground, pulse
1.2/50µs, Rs = 2Ω for
cation lines
Use only tested IP65 class cables with seals provided by NSN.
The cable shielding/drain wire must always be connected to the relevant ground pins
at the Digital Distribution Frame (DDF) or Network Termination Unit (NTU)/Network In-
terface Unit (NIU) as close as possible to avoid EMC interfering effects. Make sure ad-
ditional country-specific grounding regulations for transmission wiring installations are
followed!
The Flexi BTS Transmission interface is a SELV circuit and must not be directly con-
nected to TNV circuits.
The Flexi BTS transmission interfaces can be connected to the telecommunication net-
work only through a Network Terminating Unit (NTU)/Network Interface Unit (NIU) that
provides overvoltage protection and the required isolation.
Flexi Multimode System Module (FSMF)
ETSI EN 301 489-1 Sec
9.8
EN61000-4-5 4 kV between shield and
ground, pulse 1.2/50µs,
RS=2Ω
DC power port with FSEC/FSES box (OVP box)
The FSEC/FSES gives Class II (C, T2) protection for both common and differential mode
disturbance. The following levels should be fulfilled:
Issue: 01A DN0951839 71

• Protection level UP (Line - Line) < 500 V (at IN, 8/20 s)
• Protection level UP (Line - Ground) < 1000 V (at IN, 8/20 s)
Protection devices should fulfil following standard IEC 61643-1 and IEC 60364-4-443.
Nominal voltage is -48.0 VDC according to ETSI EN 300 -132-2.
Table 51 Lightning surge requirements for FSEC/FSES
Common mode protection Class II (C, T2) requirements
Voltage protection level, UP max. 1 kV
Nominal discharge current (8/20), IN 15 kA
Max discharge current, Imax 30 kA
Response time, tA <25 ns
Differential mode Class II (C, T2) requirements
FSEC FSES
Voltage protection level, UP max. 500 V
Nominal discharge current (8/20), IN 15 kA 5 kA
Max discharge current, Imax 30 kA 6.5 kA
g Voltage should be measured from all of the output ports
and it should not rise above 500 V line to line.
Flexi Power Distribution and Fuses (FPFD)
FPFD should have surge voltage protection integrated on input and support the following
requirements:
Table 52 Lightning surge requirements (DC power port) FPFD
EN61000-4-5 1 kV line to ground, pulse
1.2/50µs, RS=12Ω
500V line to line, pulse
1.2/50µs, RS=2Ω
g Voltage should be measured from all of the output ports and it should not rise
above 100 V line to line.
Flexi Power Distribution and Fuses (FPFC)
FPFC has surge voltage protection integrated on DC input and support the following
requirements:
FPFC gives Class II (C, T2) DC input protection for both common and differential mode
disturbance. The following levels should be fulfilled:
72 DN0951839 Issue: 01A

• Protection level UP (Line - Line) < 500 V (at IN, 8/20 s)
• Protection level UP (Line - Ground) < 1000 V (at IN, 8/20 s)
Protection devices should fulfil following standard IEC 61643-1 and IEC 60364-4-443.
Nominal voltage is -48.0 VDC according to ETSI EN 300 -132-2.
Table 53 Lightning surge requirements for FPFC
Common mode protection Class II (C, T2) requirements
Voltage protection level, UP max. 1 kV
Differential mode Class II (C, T2) requirements
Voltage protection level, UP max. 500 V
g Voltage should be measured from all of the output ports and it should not rise
above 500 V line to line.
When using FPFC, FPFC shall be plus grounded in order to provide surge protection for
the site.
Selected RF Modules
Table 54 Lightning surge requirements for selected RF Modules
RF Module Method Requirements
FRGP (2100) (3x60W) EN 61000-4-5 ±1 kV line to ground
FRGP_B (2100) (3x60W) OVP IEC 62305-4: Class II integrated, up to 5kA
FRGT (2100) (3x80W) OVP IEC 62305-4: Class II integrated, up to 5kA
FRHA (2600) (3x60W) EN 61000-4-5 ±1 kV line to ground
FXCA (850) (3x60W) EN 61000-4-5 ±1 kV line to ground
FXCB (850) (3x80W) OVP IEC 62305-4: Class II integrated, up to 5kA
FXDA (900) (3x60W) EN 61000-4-5 ±1 kV line to ground
FXDB (900) (3x80w) OVP IEC 62305-4: Class II integrated, up to 5kA
Issue: 01A DN0951839 73

Table 54 Lightning surge requirements for selected RF Modules (Cont.)
RF Module Method Requirements
FXEA (1800) (3x60W) EN 61000-4-5 ±1 kV line to ground
FXEB (1800) (3x80w) OVP IEC 62305-4: Class II integrated, up to 5kA
FXFB (1900) (3x60w) OVP IEC 62305-4: Class II integrated, up to 5kA
FXFC (1800) (3x80W) OVP IEC 62305-4: Class II integrated, up to 5kA
OVP levels assume that shielded cable is used. In case unshielded cable is used, external
OVP (FSEC/FSES) is to be used.
Selected Remote Radio Heads
Table 55 Lightning surge requirements for selected RRHs.
RRH Method Requirements
FHDA (900) (2x40W) OVP IEC 62305-4: Class II integrated, up to 5kA
FHDB (900) (2x60W) OVP IEC 62305-4: Class II integrated, up to 5kA
FHEA (1800) (2x40W) OVP IEC 62305-4: Class II integrated, up to 5kA
FRGQ (2100) (2x40W) OVP IEC 62305-4: Class II integrated, up to 5kA
FRHB (2600) (2x40W) OVP IEC 62305-4: Class II integrated, up to 5kA
74 DN0951839 Issue: 01A

8 Dimensions and weights
8.1 Module dimensions and weights
8.1.1 RF Module dimensions and weight
The dimensions of the Radio Frequency Module are presented in
Table 56: RF Module dimensions and weight.
Table 56 RF Module dimensions and weight
Property Value
Width 1) 447/492 mm
(17.6/19.4 in.)
Height 133 mm/ 3U
(5.2 in.)
Depth 2) 422/560 mm
(16.6/22.1 in.)
Weight 25 kg
(55.1 lb)
1) Width of the casing without front covers/with front covers
2) Depth of the casing without front covers/with front covers
Figure 28 3U module dimensions without covers
Flexi Multiradio BTS LTE Installation Site Requirements Dimensions and weights
Issue: 01A DN0951839 75

Figure 29 3U module dimensions with covers
Figure 30 Isometric view of the RF Module FRGT
g For isometric view of other RF Module variants, see
Flexi Multiradio BTS Radio Module and Remote Radio Head Description.
8.1.2 RRH Module dimensions and weight
Table 57: Dimensions and weight of the Remote Radio Head presents the dimensions
and weights of Flexi Multiradio BTS modules.
Table 57 Dimensions and weight of the Remote Radio Head
Property
RRH Module
variant
Height Width Depth Weight
FRGQ 486 mm
(19.1 in)
324 mm
(12.8 in)
155 mm
(6.1 in)
17 kg
(37.47 lb)

Dimensions and weights Flexi Multiradio BTS LTE Installation Site Requirements
76 DN0951839 Issue: 01A

Table 57 Dimensions and weight of the Remote Radio Head (Cont.)
Property
RRH Module
variant
FRGV 430 mm 361 mm 221 mm2)
(8.7 in)
13 kg
(28.66 lb)
FRMB/FRHB 514 mm
(20.27 in)
326 mm
(12.83 in)
148 mm(5.83 in) 17.3 kg (without
solar shield and
mounting
shroud)
(38.14 lb)
FRLB 400 mm
(15.75 in)
400 mm
(15.75 in)
150 mm
(5.90 in)
27 kg (without
solar shield and
mounting
shroud)
(59.52 lb)
FHCA 450 mm
(17.72 in)
290 mm
(11.42 in)
190 mm
(7.48 in)
15 kg (without
solar shield and
mounting
shroud)
(33.07 lb)
FRIG 459.5 mm
(18.09 in)
400 mm
(15.74 in)
145.5 / 164.5 mm
(5.72 / 6.47 in)
max. 24 kg
(52.91 lb)
FHDA/FHEA 579 mm (22.7
in.) - (as deliv-
ered, cable tie
point recessed)
733 mm (28.8
in.) - (as in-
stalled, cable tie
point released
due to brackets
and solar shield
s)
358 mm (14.1 in.) 215 mm (8.4 in.) 20 kg (44 lb)
FHDB/FHEB 335.2 (13.2 in.)
as delivered
without lower
mounting bracket
571 mm (22.5
in.) with lower
mounting bracket
in the "FMFA"
position
260 mm (10.2 in.) 324 mm (12.8 in.) 17.3 kg (38.1 lb)

2) 224 mm (8.81 in) with mounting brackets
Issue: 01A DN0951839 77

Table 57 Dimensions and weight of the Remote Radio Head (Cont.)
Property
RRH Module
variant
621 mm (24.4
in.) with lower
mounting bracket
in the "ALT" posi-
tion
Figure 31 Isometric view of the Remote Radio Head (FRIG)
78 DN0951839 Issue: 01A

Figure 32 Isometric view of the Remote Radio Head (FHDB)
g For isometric view of other RRH Module variants, see
Flexi Multiradio BTS Radio Module and Remote Radio Head Description.
8.2 FCIA dimensions and weight
Table 58: Dimensions and weight of Flexi Cabinet for Indoor (FCIA) shows the
dimensions and weight of the Flexi Cabinet for Indoor (FCIA).
Issue: 01A DN0951839 79

Table 58 Dimensions and weight of Flexi Cabinet for Indoor (FCIA)
Property Value
Height 1793 mm / 40.3U
(70.59 in.)
Width 597 mm
(23.50 in.)
Depth 521 mm
(20.51 in.)
Weight
(empty cabinet)
60.5 kg
(133 lb)
Free space for modules 36 U
8.3 Flexi Cabinet for Outdoor (FCOA) dimensions and
weight
Table 59: Dimensions and weight of Flexi Cabinet for Outdoor (FCOA) shows the
dimensions and weight of Flexi Cabinet for Outdoor (FCOA).
Table 59 Dimensions and weight of Flexi Cabinet for Outdoor (FCOA)
Property Value
Height 1550 mm
(61 in.)
Width 770 mm
(30.3 in.)
Depth 770 mm
(30.3 in.)
Depth with air filter 930 mm
(36.6 in.)
Depth with air filter and wind plate 1020 mm
(40.2 in.)
Weight
(empty cabinet)
63.2 kg
(139.3 lb)
Weight
(with air filter and wind plate)
97.2 kg
(214.3 lb)
Total weight 358 kg
80 DN0951839 Issue: 01A

Table 59 Dimensions and weight of Flexi Cabinet for Outdoor (FCOA) (Cont.)
Property Value
(fully equipped with batteries) (789 lb)
Free space for modules 40 U
(30 U horizontally + 5 U + 5 U vertically
Free space for modules
(site support and batteries installed)
21 U
(16 U horizontally + 5 U vertically)
8.4 Flexi Mounting Shield (FMSA and FMSB)
dimensions and weights
Table 60: Dimensions and weight of Flexi Mounting Shield 6U (FMSA) and
Table 61: Dimensions and weight of Flexi Mounting Shield 18U (FMSB) shows the
dimensions and weight of the Flexi Mounting Shields (FMSA/FMSB).
Table 60 Dimensions and weight of Flexi Mounting Shield 6U (FMSA)
Property Value
Height 605 mm
(23.8 in.)
Width 400 mm
(15.7 in.)
Depth 620 mm
(24.4 in.)
Weight (empty) 15.1 kg
(33.3 lb)
Free space for modules 6U
Table 61 Dimensions and weight of Flexi Mounting Shield 18U (FMSB)
Property Value
Height 930 mm
(36.6 in.)
Width 605 mm
(23.8 in.)
Depth 620 mm
Issue: 01A DN0951839 81

Table 61 Dimensions and weight of Flexi Mounting Shield 18U (FMSB) (Cont.)
Property Value
(24.4 in.)
Weight (empty) 26 kg
(57.3 lb)
Free space for modules 18U
8.5 Flexi Power Rectifier (FPRx) dimensions
Table 62: Flexi Power Rectifier FPRA shows the dimensions of the Flexi Power Rectifier
(FPRx).
Table 62 Flexi Power Rectifier FPRA
Property Value
Height 128.7 mm
(5.1 in.)
Width 475 mm
(18.7 in.)
Depth 504 mm
(19.8 in.)
82 DN0951839 Issue: 01A

9 Citytalk cabinet requirements
Both Flexi Multiradio BTS and Flexi Multiradio 10 Base Station modules can be installed
into a Citytalk cabinet by using the Talk Conversion Kit (EMIB). The inner parts of the
Citytalk cabinet must be stripped out before Flexi BTS modules are installed, and certain
parts of the Citytalk cabinet is to be replaced with new parts belonging to the Talk
Conversion Kit. Standard Citytalk installation tools can be used for stripping out the
cabinet.
The Citytalk cabinet retains its outline dimensions and the mechanical shape when
modified with the Talk Conversion Kit. The Flexi BTS within the modified cabinet fulfills
the Flexi BTS temperature and environmental requirements.
Flexi Multiradio BTS LTE Installation Site Requirements Citytalk cabinet requirements
Issue: 01A DN0951839 83

10 Third-party cabinet requirements
Basic requirements for a third-party cabinet
The basic requirements for a third-party cabinet are the following:
• 19-inch cabinet with supporting side trays or plates (must meet the IEC 60297
Dimensions of mechanical structures of the 482.6 mm (19 in.) series standard)
f In cabinet installations, Flexi Multiradio module casings are needed to
ensure proper cooling and support for the module cores. When installing
modules in a third-party cabinet, do not remove the module cores from their
casings.
• Minimum depth 600 mm (23.6 in.)
• Rear air intake (Make sure that input air is evenly distributed between the installed
modules.)
• Front exhaust
• Proper cable routing
• The recommended constant ambient temperature for modules installed inside the
cabinet must be -35ºC - +45ºC (-31ºF - +113ºF)
• If the installation is a stand-alone rack (and no cabinet), NSN requires that the front
and the rear covers are used for safety purposes. A casing is required to mount the
rear cover.
For more information on the third-party cabinet installations, see
Installing modules inside a third-party cabinet in the Installing Flexi Multiradio Base
Station and Flexi Multiradio 10 Base Station Modules in Cabinets document.
Requirements for Flexi Multiradio BTS and Flexi Multiradio 10 Base
Station module level cooling in a third-party cabinet
Flexi BTS module is installed in the cabinet without the rear-side and front-side plastic
covers. The air volume flow requirement and pressure drop caused by the cabinet back
wall and front wall (door) for a single Flexi BTS module vary with module version, see
Table 63: Air volume flow and cabinet pressure drop. The module cooling fans’ minimum
distance to any obstacle in the rear side of the cabinet is 40 mm (1.6 in.). When planning
site cooling, BTS power consumption must be taken into consideration.
Table 63 Air volume flow and cabinet pressure drop
Variant Air Volume Flow Cabinet Pressure Drop [5]
FSMx, RF Module Release 1,
RF Module Release 2[1], RF
Module Release 3[2]
140 m3/h 25 Pa
ESMB/C, RF Module Release
2[3]
200 m3/h 51 Pa
RF Module Release 3[4] 210 m3/h 56 Pa
[1] All RF Module Release 2 variants except FXCA, FXDA, FXDJ, FXEA, FXFA/B
[2] All RF Module Release 2 variants except FXCB, FXDB, FXEB, FXFC
[3] FXCA, FXDA, FXDJ, FXEA, FXFA/B
[4] FXCB, FXDB, FXEB, FXFC, FRGT
[5] Includes combined pressure for both back wall and front wall (door)
Third-party cabinet requirements Flexi Multiradio BTS LTE Installation Site Requirements
84 DN0951839 Issue: 01A

Figure 33 Module level cooling in a third-party cabinet
FlexiBTSmodule
Aircirculationfromfrontside
torearsidemustbeprevented
Cabinetfront
Freeareaformodulecoolingfan.
Minimumfreedistancetomodule
coolingfan40mm.
Therecommendeddistancefromtherearorfront
sideofthecabinettoanyobstacle100mm.
DN70117692
Cabinetrearside
Air
intake
The entire cabinet volume flow is dependent on the number of modules used (for
example, if three Release 1 RF Modules are used, the entire cabinet volume flow is 420
m3/h (3*140 m3/h) and the pressure drop caused by the front and rear door maximum 25
Pa). All modules must receive cool ambient air, and the circulation from the front of the
module to the rear side of the module must be prevented. There must be sufficient
distance to the wall (or any other obstacle) in the rear side of the cabinet, so that the
required airflow rate (for example 140 m3/h) is reached in all modules used.
It is recommended that the module cables be routed so that they do not prevent the air
outflow from the BTS.
Flexi Multiradio BTS LTE Installation Site Requirements Third-party cabinet requirements
Issue: 01A DN0951839 85

11 19-inch open rack requirements
19 in. Open Rack is designed for the installation of the Flexi modules in Indoor sites.
Figure 34 19-inch open rack
Basic requirements are listed below:
• temperature range: -35ºC - +55ºC ( -31ºF - 131ºF)
• minimum depth 600 mm (23.6 in.)
• humidity resistant
• RoHs compliance with the directive 2002/95/EC that requires that all new electrical
and electronic equipment put on the EU market from July 1 2006 do not contain lead,
mercury, cadmium, PBB and PBDE.
• In a stand-alone 19 in. racks installations front and back covers must be installed for
safety purposes. Since the cable support plate of the cable entry assembly does not
fit into the rack, some modifications are required to the cable entry assembly.
For more information on stand-alone 19 in. racks installations, see
Installing cable entries for modules in 19 in. racks.
19-inch open rack requirements Flexi Multiradio BTS LTE Installation Site Requirements
86 DN0951839 Issue: 01A

Flexi multiradio bts lte installation site requirements