This document presents ABB's SafeLink CB, an SF6 insulated ring main unit for secondary distribution networks up to 12kV. Some key details: - It is a compact and robust switchgear solution available in non-extensible and extensible configurations for applications like buildings, industries and renewable power plants. - Modules include a cable/ring switch, vacuum circuit breaker, and earthing switches. It provides IP54 protection and meets relevant IEC standards. - The SF6 gas insulation and vacuum interrupters provide reliability while maintenance-free operation and a 95% recyclable design offer sustainability benefits over alternative switchgear.

1. © ABB
Month DD, YYYY | Slide 1
Name, department/event, dateMedium Voltage Products, PPMV Nashik, 2011
SafeLink CB
SF6 Insulated Ring Main Unit
Product Presentation

2. Power and productivity for a better world
ABB’s vision for India
 Continue to build the technology needed to meet the
demand of tomorrow, today
 Preferred partner for renewables, energy efficiency,
industrial productivity and grid reliability
 Recognized good corporate citizen
 Preferred employer and talent source for ABB worldwide

3. How ABB in India is organized
Five global divisions
 Electricals, automation,
controls and
instrumentation for power
generation and industrial
processes
 Power transmission
Power
Products
Power
Systems
Discrete
Automation
and Motion
Process
Automation
19,520 MINR
2,260
employees
19,446 MINR
2,060
employees
15,594 MINR
1,050
employees
12,590 MINR
1,750
employees
2010 revenues
Low Voltage
Products
4,445 MINR
470
employees
ABB’s portfolio covers:
 Distribution solutions
 Low-voltage products
 PLCs, variable frequency
drives, motors for discrete
automation and process
industries

4. © ABB Group
July 7, 2019 | Slide 4
SafeLink CB
Compact Ring Main Unit for Secondary Distribution
 SF6 insulated switchgear
 12 kV, 630 A, 21 kA Metal Enclosed design
 Cost effective solution for local and global market
 Type tested according to IEC standards
 Extensible on both sides
 Internal Arc classified
 IP54 degree of protection
 Vacuum Circuit Breaker with high mechanical
endurance of 5000 operations
 Maintenance free and safety for user and pedestrian
 Manufactured according to ISO 9001 14001
 Recyclable and very low environmental impact

5. © ABB Group
July 7, 2019 | Slide 5
1985 2011
36 kV
12 kV
24 kV
Well proven technology – years of experience – global references
Safe-series product evolution
SafeLink CB

6. © ABB Group
July 7, 2019 | Slide 6
Applicable IEC standards
SafeLink CB
 Type tested as per following relevant
latest IEC standards
 IEC 62271-200 (Switchgear)
 IEC 62271-1 (Common
Specifications)
 IEC 62271-100 (Circuit Breaker)
 IEC 62271-102 (Disconnector &
Earthing Switches)
 IEC 60265-1 (Switch)
 IEC 60529 (Degree of Protection)

7. © ABB Group
July 7, 2019 | Slide 7
Unit Overall View/Picture
SafeLink CB
Extensible RMU’s in coupled condition
Non-extensible CVC RMU

8. © ABB Group
July 7, 2019 | Slide 8
Design Philosophy
SafeLink CB
 Compact and Robust Design
 Simulations application for design validations
 Personnel safety considerations
 Modern development and manufacturing techniques
 Durability and recyclable for environment

9. © ABB Group
July 7, 2019 | Slide 9
General Information
SafeLink CB
 SafeLink CB is a Ring Main Unit for
secondary distribution network up to
12 kV
 Suitable for indoor as well as outdoor
applications
 Extensibility on both sides
 Completely factory assembled, sealed
and ready to use

10. © ABB Group
July 7, 2019 | Slide 10
Configurations
SafeLink CB
 Available in non-extensible
configurations of CVC and extensible
configurations of +CVC+, +V+ and
+C+ where
 C- Cable/Ring switch module with
test point facility
(3 positions ON-OFF-EARTH)
 V-Vacuum circuit breaker module
for relay transformer protection
(with manually operated
disconnector)
C C
V

11. © ABB Group
July 7, 2019 | Slide 11
Applications
SafeLink CB
 Small/Light industries
 Wind power plants
 Buildings, hotels, shopping centers
 Office buildings, business centers
 Mining applications
 Airports, Hospitals
 Railway systems
 Underground railway projects

12. © ABB Group
July 7, 2019 | Slide 12
Secondary
Distribution
Distribution
substation
400 kV
40-70 kV
130 kV
11 kV
Transmission
substation
Main substation
415 V
Transformer
Secondary Distribution Network
SafeLink CB

13. © ABB Group
July 7, 2019 | Slide 13
RMU in Network
SafeLink CB

14. © ABB Group
July 7, 2019 | Slide 14
ABB Factory
Nashik, India
 ABB Medium Voltage Switchgear factory
in Nasik.
 Outdoor & Indoor Breakers
 Air Insulated Switchgears
 Ring Main Units (RMU)
 Modular Systems (CSS)
 Vacuum Interrupters
 Retrofit & Services
 Quality/Certificates
 ISO 9001 & ISO 14001
 OHSAS 18001
 550 employees for offices / factories

15. © ABB Group
July 7, 2019 | Slide 15
Technical Data
SafeLink CB
C Module V Module
Switch
Disconnector
Earthing
Switch
Vacuum Circuit
Breaker
Earthing Switch
/Disconnector
Rated Voltage kV 12 12 12 12
Power frequency withstand voltage kV 38 38 38 38
- across disconnector kV 45 45 45 45
Lightning impulse withstand voltage kV 95 95 95 95
- across disconnector kV 110 110 110 110
Rated normal current1) A 630 630 630 630
Breaking capacities
- active load breaking current A 630 - - -
- closed loop breaking current A 630 - - -
- cable charging breaking current A 25 - 25 (Class C2) -
- line charging breaking current A 1 - 10 (Class C2) -
- earth fault breaking current A 75 - - -
- earth fault cable and line charging A 43.5 - - -
- short circuit breaking current kA - - 21 -
Making capacity kA 52.5 52.5 52.5 see2)
Short time current (3-sec) kA 21 21 21 21
Mechanical Operations nos M1 M0 M1+3000 M0
1)Suitable derating shall be applied for ambient temperatures greater than 40 deg
2)Disconnector is manually opearated, earthing operation is through VI. Hence no making capacity assigned
Internal Arc Classification (IAC) AF 20 kA 1 sec for inside tank

16. © ABB Group
July 7, 2019 | Slide 16
Switchgear Dimensions1 ‘CVC’ (in mm)
SafeLink CB
1210
960
1320
1540
Height: 1540 mm, Width: 960 mm, Depth 1210 mm
826
Bushing
C-C
100 mm
Side View Front View

17. © ABB Group
July 7, 2019 | Slide 17
Switchgear Dimensions2 ‘CVC’ (in mm)
SafeLink CB.
1830
2020
Bushing
C-C
105 mm
Back View
Front Door
Open View

18. © ABB Group
July 7, 2019 | Slide 18
Switchgear Dimensions ‘+CVC+’ (in mm)
SafeLink CB.
Side View Front View Back View

19. © ABB Group
July 7, 2019 | Slide 19
Switchgear Dimensions ‘+V+’ (in mm)
SafeLink CB.
Side View Front View Back View

20. © ABB Group
July 7, 2019 | Slide 20
Switchgear Dimensions ‘+C+’ (in mm)
SafeLink CB.
Side View Front View

21. © ABB Group
July 7, 2019 | Slide 21
Switchgear Dimensions in coupled condition (in mm)
SafeLink CB.
Front View
1995

22. © ABB Group
July 7, 2019 | Slide 22
Cable/Ring Switch Module (C)
SafeLink CB
 3 position switch disconnector and
earthing switch
 SF6 as arc quenching and insulating
medium
 Cable Test Point Bushings on bottom
of the tank (standard)
 Single spring latched mechanism for
all 3 positions of ON-OFF-EARTH
 Cable compartments and Test Point
compartments interlocked
 Busbar extension bushing

23. © ABB Group
July 7, 2019 | Slide 23
Vacuum Circuit Breaker Module (V)
SafeLink CB
• VG5 interrupter from ABB
• Interruption in vacuum
 Insulation provided by gas
 No consumable parts
 Rugged and reliable
 5000 mechanical
endurance operations
 30000 operations of VI at
rated current
 Three position disconnector
and earthing switch

24. © ABB Group
July 7, 2019 | Slide 24
Manufacturing facilities and features
SafeLink CB
 Modern production techniques
 Stainless Steel Tank enclosure
 Programmed Robotic Welding
 Sealed Pressure System leakage
tested with automated and modern
machine
 Vacuum Interrupters manufactured in
world class ABB facility for high
reliability and long life
 Environmental friendly and
maintenance free for life

25. © ABB Group
July 7, 2019 | Slide 25
Tank Overview
SafeLink CB
 Vacuum BKR aligned to
T-off side with cable
bushings on back side
 Switch cable bushings on
the side
 Mechanisms for Circuit
Breaker and Cable Switch
 Disconnector manually
operated
 Test Point Bushings in the
bottom of the tank

26. © ABB Group
July 7, 2019 | Slide 26
Relays Self-powered
SafeLink CB
 Protection CT’s mounted on the T-off
side bushings
 CT powered protection relay (no
external power supply necessary)
 Economical
 Easy adjustment
 Perfect for large distribution
transformers
 REJ603: ABB relay option with HMI
 Relay with advanced overcurrent and
earth fault functions

27. © ABB Group
July 7, 2019 | Slide 27
Installation Footprint and Maintenance
SafeLink CB
 Compact design
 Easy to install and connect
 Commissioning - factory
tested
 NO live parts exposed
 Minimum number of parts
 Fully sealed and screened
unit
 Virtually maintenance free
 Cable terminations on side
and on rear

28. © ABB Group
July 7, 2019 | Slide 28
 Cable bushings with interface C,
400 series, bolted type, 630A
 All cable bushings covered by
interlocked boxes
 Arc proof cable compartments
 Capacitive voltage indication as
standard for all cable bushings
 Extensible bushings on the side
Cable Termination and Bushings
SafeLink CB

29. © ABB Group
July 7, 2019 | Slide 29
Mechanisms and Interlocks
SafeLink CB
EL2 Mechanism (BKR)
 Rough, reliable with proven technology
 Stored energy and trip free
 Minimum number of moving parts
 High number of mechanical operations
 Anti-pumping device built in
 Interlocked with disconnector
Ring Switch Mechanism (RCS)
 Single spring latched mechanism for 3 positions ON-OFF-
EARTH
 Interlocked with cable box and Test Point box

30. © ABB Group
July 7, 2019 | Slide 30
A
B
C
D E
Breaker Module Accessories
SafeLink CB
A. Shunt opening release (-MO1)
B. Additional shunt opening release (-
MO2)
C. Shunt closing release (-MC)
D. 3NO+2NC or 2NO+3NC Auxiliary
contacts (BB1/BB2)
E. Closing spring charging motor
operator (-MS)
 Operational counter for BKR as optional

31. © ABB Group
July 7, 2019 | Slide 31
Additional Accessories
SafeLink CB
 2NO-NC auxiliary switches for Switch
 2NO-NC auxiliary switches for
Disconnector
 1 NO auxiliary switch for monitoring
low pressure in equipment
 Short Circuit/Earth Fault Indicators
according to DIN standards for switch
modules
L1 L2 L3

32. © ABB Group
July 7, 2019 | Slide 32
Mechanisms
Breaker
Cable Connection
Cable Compartment
Switch
Pressure relief
Switchgear Compartments
SafeLink CB
Test Point Bushings

33. © ABB Group
July 7, 2019 | Slide 33
Front Mimic
SafeLink CB
 Logical user interface
 Clear display of all functions with
appropriate usage of colours for ON-
OFF-EARTH functions and indication
 Mimics – independent of language
 Padlock for switch and disconnector

34. © ABB Group
July 7, 2019 | Slide 34
Description of functions
SafeLink CB
1. Manometer
2. Relay
3. Fault Indicator
4. VPIS for Ring Switch RHS
5. Ring Switch RHS
6. Cable Box for Ring Switch RHS
7. Test Point Box for Ring Switch RHS
8. Operating Handle
9. T-Off Cable Box (For BKR)
10. Protection CT mounted on BKR Bushing
11. Lifting Hooks for Switch Gear
12. Tank Earthing
13. End Cover Box (Extensible bushing)
1
2
3 4
5
6
7
8
9
10
11
12
13

35. © ABB Group
July 7, 2019 | Slide 35
Why SafeLink CB?
Cost efficiency
 High standardized volumes
 Space saving
 Minimal maintenance
 Easy installation
High personnel safety
 Tested acc. To IEC (internal arc fault)
 Interlocking provided for all cable boxes
 Arc proof cable covers
Reliability & Power continuity
 Climate independent & robust structure
 ABB quality (high level production with high quality
components)
 Environment friendly 95% recyclable
 Compact and extensible design with less use material
(compared to AIS)

36. © ABB Group
July 7, 2019 | Slide 36
End of Life
SafeLink CB
• Design compliance - 30
years +
• Gas remains inside
• Recycling 95% approx by
weight (CVC unit)
• ABB policy for recycling
• www.abb.com/sf6
• We are equipped to re-claim
gas from discarded
switchgears

37. © ABB Group
July 7, 2019 | Slide 37