This document provides information on low voltage armoured underground cable and XLPE power cable. It describes the cable structures which include conductors, insulation, fillers, binders, sheaths and armour. It lists rated voltages, operating temperatures, conductor materials and shapes. Application details are provided for different cable types used for underground, indoor, and water/seabed laying. Key features of MV and LV XLPE cables are also summarized such as watertight construction, lead sheath option, and corrosion resistance.

1. Low Voltage Armoured Underground Cable
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Low Voltage Armoured Underground Cable
Underground cable structure
Conductor: Solid or stranded copper
Insulation: Polyvinyl chloride (PVC)
Filler: Polypropylene filament with lapped binding tape
Binder: Binding tape
Inner sheath: Polyvinyl chloride (PVC)
Amour: Galvanized steel wire armored(SWA) or steel tape armored(STA)
Sheath: Polyvinyl chloride (PVC)

2. Low Voltage Armoured Underground Cable Operating characteristics
1) Rated Voltage: 0.6/1kV
2) Max. working temperature: 70°C (pvc insulation), 90°C (xlpe insulation)
3) Max. temperature during short circuit (≤5S): 160°C (PVC insulation), 250°C(XLPE insulation)
4) Conductor: class 1 and 2 copper or aluminum

3. 5) Shape of conductor: circular and sectional
6) Sectional area: 1.5 - 630mm2
7) Insulation: PVC / XLPE
8) No. of cores: 1, 2, 3, 3+1, 3+2, 4, 4+1, 5
9) Armor: steel wire or steel tape available
10) Sheath: PVC
11) Min. beding radius: 15 times cable radius (single core), 12 times cable radius (multi cores)
12) Max. conductor DC resistance at 20 °C
Low Voltage Armoured Underground Cable
Underground cable application
TYPE Description of Cable Main Applications
CU
core
AL
core
VV32 VLV32
Copper/Aluminum core,PVC insulated,thin
steel wire armored,PVC sheathed power cable
Thin steel wire armoured PVC cables are used in case of great dif
levels or vertical installation and Can do vertical burial.Can bear
positive pressures and tension forces.VV33 VLV33
Copper/Aluminum core,PVC insulated,thin
steel wire armored,PE sheathed power cable
VV42 VLV42
Copper/Aluminum core,PVC insulated,thick
steel wire armored,PVC sheathed power cable
Thick steel wire armoured PVC cables are suited for vertical insta
can be laid water or sea-bottom.Can bear greater positive pressur
tension forces.VV43 VLV43
Copper/Aluminum core,PVC insulated,thick
steel wire armored,PE sheathed power cable
Main products:
Low voltage Underground cable,Electrical wire cable,Below 35kV voltages of XLPE insulated cables,
Armored cables, Control cables, Rubber cables, PVC insulated wires and cables, BV wire,House wire;
Bare stranded conductors(AAC,ACSR,AAAC,ACAR); etc.
3x300mm2 Copper XLPE Power Cable
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4. 3x300mm2 Copper XLPE Power Cable
The electric cable is applied to transmit and distribute power in power transmission and distribution
system of 35kV or lower. It is widely adopted in the fields including power, construction, mines,
metallurgy, petrochemical industry and communication in complete replace of oil immersed paper
insulated power cable and in partial re-place of PVC insulated power cable.
XLPE Power Cable
1. Standard of XLPE Power Cable:
According to GB12706( Equal to IEC60502)Also can do by standard of ASTM,BS,DIN and AS/NZS or
other standards as request.
2. Rated Voltage of XLPE Cable:
0.6/1KV 6/10KV;8.7/15KV;12/20KV;18/20KV;21/35KV;6/35KV
3. Construction of XLPE Power Cable:
Conductor:Copper or Aluminum
Insulation:XLPE
Inner sheath:PVC or PE
Armoured:Galvanized steel tape,Galvanized steel wire
Outer Sheath:PVC or PE
NO. of cable cross: 1 core(Single core),2cores(Double cores),3cores, 4cores(4 equal-section-area cores
OR 3 equal-section-area+1 small section area neutral core),5cores(5 3 equal-section-area cores+2 small
area neutral cores OR 4 equal-section-area +1 small area neutral cores).We provide armored type and
non-armored type for the cables stated above.

5. Also can do according to the customer's request.
4. Characters of XLPE Cable:
a.Max Long-time operating temperature of XLPE insulated power cable is 90°C
b.Installing temperature of cable should not be less than 0°C
c.Max short-circuit temperature is not exceed 250°C,Not more than5 Sec.
d.Unable be laid without the limit of fall with enough mechanical pull,Single core cable can not be laid in
iron tube or fixed by circled iron tools around cables
3x300mm2 Copper XLPE Power Cable
Type & Designation
Type Description Applications
YJV
YJLV
Cu or AL conductor XLPE
insulated PVC sheathed power
cables.
For laying indoors, in tunnels, in ducts. Able to bear extermal
mechanical force but not large pulling forces. Single core
cables are impermissible to be laid in magnetic ducts.
YJY
YJLY
Cu or AL conductor XLPE
insulated PE sheathed power
cables.
YJV22
YJLV22
Cu or AL conductor XLPE
insulated PVC sheathed internal
steel tape armoured power cables.
For laying indoors, in tunnels, in ducts and underground.
Able to bear extermal mechanical force but not large pulling
forces, Impermissible to use single core cable in A.C circuit.
YJY23
YJLY23
Cu or AL conductor XLPE
insulated PE sheathed internal
steel tape armoured power cables.
YJV32
YJLV32
Cu or AL conductor XLPE
insulated PVC sheathed internal
steel wire armoured power cables.
For laying in areas along route with large difference of
elevation, in shafts and in water, able to bear a
corresponding pulling forces and external mechanical forces.
YJY33
YJLY33
Cu or AL conductor XLPE
insulated PE sheathed internal
steel wire armoured power cables.
Description& Application of XLPE POWER Cable
TYPE NAME Main Application
CU core AL core
YJV/YJY YJLV/YJLY
XLPE insulated,PVC/PE
sheathed power cable
For laying indoor ,tunnel,canal and
underground.Unable to bear external mechanical
forces,but bear the traction force during laid

6. YJV22/YJV23YJLV22/YJLV23
XLPE insulated,steel tape
armored,PVC/PE sheathed
power cable
For laying indoor ,tunnel,canal and
underground.Able to bear external mechanical
forces,but unable to bear large pulling force
YJV32/YJV33YJLV32/YJLV33
XLPE insulated,thin steel wire
armored,PVC/PE sheathed
power cable
For laying in shaft,water underground will large
difference of level.Able to bear external mechanical
forces and moderate pulling force
YJV42/YJV43YJLV42/YJLV43
XLPE insulated,thick steel wire
armored,PVC/PE sheathed
power cable
For laying in water and seabed.Able to bear positive
pressure and pulling force
33kv Copper XLPE Power Cable
Advantage:
a. Excellent electric and mechanical characteristics
b. Best Resistance chemical corrosion and heat-ageing,environment stress and flame-retardant
c. Simple in structure,Convenient to use
d. Reduce costs
Rated Voltage,Core Numbers & Nominal Cross-section Area:
Uo/Um(kv) 1st class 0.6/1 1.8/3 3.6/6
No. of Core 2nd class 1/1 3/3 6/6
1 core section area(mm2) 1.5-800 25/800 25-800
2 core section area(mm2) 1.5-185 / /
3 core section area(mm2) 1.5-400 25-400 25-400
4 core section area(mm2) 2.5-400 25-400 /
5 core section area(mm2) 2.5-400 25-400 /
Cable Properties
Special features which we can offer for MV cables:

7. * Watertight construction (both radial and longitudinal).
* Lead sheath available for options.
* Resistant to heavy vibration.
* Available in long delivery lengths to reduce number of joints.
* Corrosion-free screen area.
* Copper or aluminum conductor up to 2500mm².
* Metallic sheath and radial moisture barrier made of copper wire or tape.
* Different options for outer PE jackets (LDPE, MDPE & HDPE).
* Different options for LSF, LSZH & FRPVC, being anti-termite or UV resistant as per BS 7835, IEC
60332 etc.
* Strippable insulation screen.
* Metallic screen made of multiple layers of copper tapes or a combination of copper wires and tapes to
increase the earth fault current carrying capacity.
* Increased armour conductivity by insertion of hard drawn copper wires in armour.
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PVC/XLPE POWER CABLES
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PVC/XLPE POWER CABLES
300V 450V 600V 1KV low voltage to medium voltage 11KV 33KV AL Cu/XLPE/SWA/AWA/STA/PVC
Electric XLPE POWER CABLES
1.Main Application
PVC insulated cables are used for power distribution and transmission, building, appliance, flexible cord
and machine tool. Insulation and jackets made from PVC which has a number of desirable properties
inculding flexibility, resistance to temperature, resistance to adverse environmental situations and low
cost.
2.Standards
GB/12706-2008, IEC60502, IEC 60228,IEC60332,BS 6004, AS/NZS 5000.1 ect.
*Our POWER can also design and produce for special application requirement.
3.Products Type
Chinese
Type Designation Application
Cu Al
VV VLV Cu conductor(Al conductor)PVC insulated PVC Laying indoors, in tunnel, fixed on the bracket, pipe and bu

8. sheathed power cable soil, the cable can not bear external mechanical forces.
VY VLY
Cu conductor(Al conductor)PVC insulated PE
sheathed power cable
VV22 VLV22
Cu conductor(Al conductor)PVC insulated double of
steel-tape armored PVC sheathed power cable For laying indoors, in tunnel, cable trench, or direct in grou
bear external mechanical forces, but unable to bear large p
VV23 VLV23
Cu conductor(Al conductor)PVC insulated double of
steel-tape armored PE sheathed power cable
VV32 VLV32
Cu conductor(Al conductor)PVC insulated steel-wire
armored PVC sheathed power cable For laying indoors, in tunnel, cable trench, well or direct in
to bear external mechanical forces and certain pulling forc
VV33 VLV33
Cu conductor(Al conductor)PVC insulated steel-wire
armored PE sheathed power cable
4.Production Range
Rated Voltage U0/U(Um) (kV) : 0.6/1(1.2) No. of cores : 1 , 2 , 3, 4 , 5, 3+1 , 4+1 ,3+2 Nominal
cross-section(mm2): 1.5~630
5.Construction
Conductor shaped:RE=circular solid,CC=compacted circular stranded,SM=sector shaped stranded
Conductor: Plain circular ,compacted or shaped stranded copper or aluminium conductor ,conform to
IEC60228 CLass 1 or 2
Insulation: PVC Compound Insulation
Colour identification :
1 Core: Red or Black
2 Cores: Red, Black
3 Cores: Red, Yellow, Blue
4 Cores: Red, Yellow, Blue, Black
5 Cores: Red, Yellow, Blue, Black, Green
Above 5 Cores: Black Cores with White numbers
The above identifying can be changed as order
Bedding /Inner Sheath :PVC Compound
Armour: Aluminium wire, Galvanized steel wire or Steel tape
Outer Sheath:PVC or PE Compound
PVC/XLPE POWER CABLES
1.Main Application
XLPE(Cross linked polyethylene) cable(XLPE POWER CABLE) constitutes the best cable for
transmission and distribution lines because of its excellent electrical and physical properties. These
cables has the advantage of simplicity in construction, lightness in weight; convenience in application
besides its excellent electrical, thermal, mechanical and anti-chemical corrosion properties. It can also
be laid with no limitation of level difference along the route.

9. 2.Standards
GB/12706-2008, IEC60502-2,IEC 60228,IEC60332 ,BS 6622 , and ICEA S-66-524 ect.
*Our POWER can also design and produce for special application requirement.
3.Products Type
Chinese Type
Description Application
Cu Al
YJV YJLV
Cu conductor(Al conductor)XLPE insulated PVC
sheathed power cable
Laying indoors, in tunnel, fixed on the bracket,
pipe and buried in the soil, the cable can not
bear external mechanical forces.YJY YJLY
Cu conductor(Al conductor)XLPE insulated PE
sheathed power cable
YJV22 YJLV22
Cu conductor(Al conductor)XLPE insulated
double of steel-tape armored PVC sheathed
power cable
For laying indoors, in tunnel, cable trench, or
direct in ground, able to bear external
mechanical forces, but unable to bear large
pulling force.
YJV23 YJLV23
Cu conductor(Al conductor)XLPE insulated
double of steel-tape armored PE sheathed power
cable
YJV62 YJLV62
Cu conductor(Al conductor)XLPE insulated
double of aluminium-tape armored
PVC sheathed power cable
YJV32 YJLV32
Cu conductor(Al conductor)XLPE insulated
steel-wire armored PVC sheathed power cable
For laying indoors, in tunnel, cable trench, well
or direct in ground, able to bear external
mechanical forces and certain pulling force
YJV33 YJLV33
Cu conductor(Al conductor)XLPE insulated
steel-wire armored PE sheathed power cable
YJV72 YJLV72
Cu conductor(Al conductor)XLPE
insulated aluminium-wire armored PE sheathed
power cable
Note: Our POWER can produce “Flame-Retardant Series”, “Fire-Resistant Series”, “Low Smoke Halogen
Free (LSHF/LSOH) Series”,“Low Smoke Low Halogen (LSLH) Series”, etc. power cable as customer
required.
Performance in line with IEC60332,IEC 61034,IEC60754 requirements.
4.Production Range
Rated Voltage U0/U(Um) (kV) : 3.6/6(7.2), 6/6(7.2) ,6/10(12.0), 8.7/10(12)
8.7/15(17.5),12/20(24.0),18/30(36.0),21/35(40.5),26/35(40.5) No. of cores : 1 , 3, Nominal
cross-section(mm2): 25~630

10. Note: U0 :Rated power-frequency voltage between conductor and earth or armour, metal sheath or
screen for which the cable is suitable.
U :Rated power-frequency voltage between phase conductors for which the cable is suitable.
Um :Maximum value of the highest system voltage between phase conductors for which the cable is
suitable.
5.Construction
Conductor: Plain annealed stranded compacted circular copper or aluminium conductor to IEC60228
class 2
Conductor Screen:Extruded semi-conductive compound
Insulation:XLPE (cross-linked polyethylene) rated at 90°C
Insulaton Screen:Extruded semi-conductive compound
Metallic Screen:copper tape or a concentric layer of copper wires
Colour for core indentification:Red,Yellow ,Blue tape shall be applied between insulation screen and
metallic screen ( The above identifying can be changed as order)
Assembly : Three screened cores are laid up together ,if necessary filled with non hygroscopic material
compatible with insulation and covered with a layer of PVC sheath
Inner Sheath:Extruded layer of PVC ST2 or PE , LSZH
Armour: Double of galvanized steel tape or galvanized steel wire for three core power cable ,Double of
aluminium tape or aluminium wire for single power cable
Outer Sheath: PVC type ST2 to IEC 60502 or PE ,LSZH
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XLPE Low Voltage Cables
Application:
It is used to transmit and distribute power in power transmission and distribution system of 35kV or
lower. It is generally applied to the fields including power, construction, mines, metallurgy,
petrochemical industry and communication in complete replace of oil immersed paper insulated power
cable and in partial replace of PVC insulated power cable.
Construction:
Conductor: Copper (or Aluminium)
Insulation: XLPE
Filler: Non-hygroscopic Polypropylene(PP)
Binder Tape: Non-woven fabric
Inner Covering: PVC
Metallic Armour: Galvanized Steel Wire Armour(SWA)
Non-magnetic Steel Wire Armour(only for single core)

11. Aluminium Wire Armoured(AWA, only for single core)
Outer Sheath: PVC (or PE)
Standards:
The products are mainly complying with IEC 60502 standard, also can be produced according to OEM
requirements and other standards, such as BS standard, DIN standard, ASTM standard, etc.
Voltage grade is up to 35kv, cross-section area can be up to 400 sqmm (copper or alumimum conductor).
Conductor long-time operating temperature is 90° C. In short circuit, conductor highest temperature
should be not more than 250° C
XLPE Low Voltage Cables - Using features:
1. Rated voltage: Uo/U: 26/35kV, 21/35kV, 12/20 kV (24 kV), 8.7/10kV, 8.7/15kV, 6/6kV, 6/10kV.
2. No. Of core: Single-core, Three-core.
3. The highest allowed operating temperature of conductor for long-term working is 90° C. In
short-circuit (Max. Long-term is no more than 5 seconds). The highest temperature for conductor is no
more than 250° C.
4. D. C Resistance of the conductor complies with the stipulations of GB/T3956-1997.
5. The environment temperature should be no lower than 0° C when lay. Otherwise it should be
preheated.
6. The cable is laid without horizontal drop limit. The Min. Bending radius of three-core cable should be
no smaller than 12 times of cable outer diameter.
7. Working Frequency Voltage Test: .
For cable with Uo of 3.6kV or lower: 2.5Uo+2kV/5min without puncture.
For cable with Uo of 3.6Kv~18kV: 3.5Uo/5min without puncture.
For cable with Uo of 21kV and 26 kV: 2.5Uo/30min without puncture.
8. Partial Discharge Test: The discharge volume should be no more than 10pC under 1.73Uo for the cable.
XLPE Low Voltage Cables -Type
Name Main ApplicationCu
Core
Al Core
YJV
YJY
YJLV
YJLV
XLPE insulated,PVC or PE Sheathed
Power Cable
For laying indoor,tunnel,channel and undergroud,Unable to
bear external mechanical force,but bear the traction force
during laid
YJV22
YJV22
YJLV22
YJV22
XLPE Insulated,Steel Tape
Armoured,PVC or PE Sheathed
Power Cable
For laying indoor,tunnel,channel and undergroud Able to
bear external mechanical force,but unable to bear large
pulling force
YJV32
YJV32
YJLV32
YJLV32
XLPE Insulated,Fine Steel Wire
Armoured,PVC or PE Sheathed
Power Cable
For laying in shaft with large difference of level.Able to bear
external machanical force and maderate pulling force
YJV42
YJV42
YJLV42
YJLV42
XLPE Insulated,Thick Steel Wire
Armoured,PVC or PE Sheathed
Able to bear positive pressure and pulling force

12. Power Cable
Note: 1 KV flame XLPE insulated power cable of category A,B and C as well as fire resistant XLPE
insulated power cable can be manufactured complying with the requirements of nation standard GB GA
and IEC standard.
Operation characteristic
The maximum operating temperature of cores shall not exceed 90ºC ween the cable used for a long
period. The temperature of cores shall not exceed 250ºC at short circuit for 5 seconds. The ambient
temperature should not be below 0ºC during installation.
The permissible bending radius for cable should be the permissible bending radius for cable shall be
complied with the regulation as below:
For single-core No armoured cable: R>20(D+d)±5% For multi-core:R>15(D+d)±5%
Armoured cable:R>15(D+d)±5% For multi-core:R>12(D+d)±5%
Where:R-being radius(mm) D--overall diameter of the cable(mm)
d-diameter of conductor(mm)
The single core cable of using in AC circuit shall be without armour or with steel wire armour and shall
not be laid in magnetic ducts.
Main Technical Properties
Rated voltage of cable 0.6/1(1.2)KV
D.C. Resistance of conductor
According to GB/T3956-2008 or IEC
60228-2004
Power frequency withstand voltage test for 5 minutes No breakdown at 3.5 KV
Hot set test for insulation,200ºC 15 min with pressure
20N/cm2
Load elongation
≤175%
Max permanent elongation after cooled ≤15%
Installation and operation condition of cable
In air:
1. The single-core cables are parallel laid,the distance between the cable center is 2 times of the cable
diameter for cross-section area of conductor≤185mm² and 90mm for cross sectional area of conductor
≥240mm²
2. Ambient air temperature:40ºC
3. Max.Continuous operating temperature of conductor:70ºC
Current rating factors for variation in ambient air temperature
Ambient air temperature 20ºC 25ºC 30ºC 35ºC 40ºC 45ºC
Rating factor 1.29 1.22 1.15 1.08 1.0 0.91

13. XLPE Low Voltage Cables
Direct in the ground:
1. The single-core cables are installed separately,the distance between the cable center is 2 times of cable
diameter.
2. Soil temperature:25ºC
3. Max. Continuous operating temperature of conductor:70ºC
4. Thermal resist of soil:1.0ºC.m/W
5. Depth of laying:0.7m
Current rating for variation in soil temperature
Soil temperature 20ºC 25ºC 30ºC 35ºC 40ºC
Rating factor 1.04 1.0 0.96 0.92 0.87