1. Secondary Gas Insulated Switchgear
SafeLink CB
12kV SGIS

2. SafeLink CB Contents Ring Distribution & Secondary Network
SGIS Application
Operating Conditions
SafeLink CB Portfolio, Parameters & Dimensions & Variations
Product Safety
Cable Termination & Extension
Protection, Indication & Measurements
Digital (Smart Secondary Switchgear)
Manufacturing Facility
End-of-life & Environmental Certification

3. Ring Distribution System
SafeLink CB
Ring Distribution System
Concept & Advantages
In the event of fault in Underground Network, appropriate measures are required for quick fault location and isolation.
Unlike Radial distribution system for system redundancy, Ring Topology of using RMU can still reduce downtime equally & still remain economical.
Ring Main Units are deployed in a manner, that every load centre in the loop has an alternative source of supply available.
In the event of fault, the faulty section can be isolated within minutes and supply to affected load centers can be resumed with alternative source.
Detailed Simulation follows……
RING SWITCH
T-OFF SWITCH
Load Centre
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4. Secondary Distribution
SafeLink CB
400 kV
Secondary Distribution
Transmission
substation
Thermal
Hydro
Transformer
130 kV
Renewables
Infrastructure
40-70 kV
Main substation
400 V
Distribution
substation
36kV - 24kV – 12kV
Secondary
substation
Industry
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5. Ring Distribution System – Normal Condition
SafeLink CB
Ring Distribution System – Normal Condition
33/11kV
33/11kV
Normally Open Points
Local Receiving
Stn.
Local Receiving
Stn.
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6. Ring Distribution System - Faulty Condition
SafeLink CB
Ring Distribution System - Faulty Condition
FPI’s Indicate path of fault current
33/11kV
33/11kV
Local Receiving
Stn.
Normally Open point is closed
Local Receiving
Stn.
Faulty Section is Isolated
Fault Appears in System
Grid Blackout!
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7. Ring Distribution System – Restored Condition
SafeLink CB
Ring Distribution System – Restored Condition
33/11kV
33/11kV
Local Receiving
Stn.
Local Receiving
Stn.
Supply to Load Centers is Resumed!
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8. Secondary Distribution
SafeLink CB
Secondary Distribution
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9. SafeLink CB Application Packages Back to Contents Renewables Solar
Wind
Industry
Oil & Gas
Textile & Automotive
Cement & Glass
Utility
Power distribution utility
Infrastructure & Transport
SMART City & Industrial Corridors
Military Engineering Services
Metro & Railways
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10. SafeLink CB Operating Conditions Operating Conditions Back to Contents
Normal operation conditions
The rated characteristics of the switchgear are valid under the following ambient conditions:
minimum ambient temperature: – 25 °C
maximum ambient temperature: + 40 °C
Ambient humidity
maximum 24 h average of relative humidity 95%
maximum 24 h average of water vapour pressure 2.2 kPa
maximum monthly average of relative humidity 90% RH
maximum monthly average of water vapour pressure 1.8 kPa
Altitude
Upto 1000 metres above sea level
Corrosion Class
C3 for Indoor & C2 for Outdoor
For different temperature ranges, higher altitudes, special corrosion class please contact ABB sales representative.
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11. SGIS Product Evolution
SafeLink CB
SGIS Product Evolution
Well proven technology
Years of experience
Global Product Portfolio
Global Customer References
36kV
24kV
12kV
1985
Norway Plant
2003
Nasik Plant
2004
2011
2014
2018
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12. SGIS Product Portfolio
SafeLink CB
SGIS Product Portfolio
Product Family
SafeRing / SafePlus
2004
Indoor
12/24kV
SafeLink CB
2011
Outdoor
12kV
SafeRing / SafePlus
2006
Outdoor
12/24kV
SafeRing 36 / SafePlus 36
2014
Indoor/Outdoor
36kV
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13. SGIS Product Portfolio
SafeLink CB
SGIS Product Portfolio
SafeRing/SafePlus
SafeLink CB
SafeRing 36 / SafePlus 36
Indoor
Outdoor
Rated Voltage (kV)
12/24 12 36
Rated Current (A)
630
STC (kA/s)
21/3
25/1
Breaking Capacity (kA)
21/16 21 25
Mechanical Endurance (LBS)
M1 (1000)
Mechanical Endurance (VCB)
M1 (2000)
M1 (2000) (M2 optional)
Electrical Endurance (LBS) E3
Electrical Endurance (VCB) E2 E1
IAC Classification
AFLR 20kA/1s
AFLR 21kA/1s
AFL 21kA/1s*
AFLR 25kA/1s**
* - AFL 21kA/1s for Tank & AFLR 10kA/0.1s for Cable Box. Higher values available on request
** - AFLR 25kA/1s for Indoor SafeRing 36 / SafePlus 36
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14. SafeLink CB Product Portfolio SafeLink CB Back to Contents
C / V / D Switching / Protection
Modular Design
Extremely Compact Switchgear
CVC, VC, VD, V, C
Extensibility on both sides
3 modules in single tank (Any combination)
Motorisation/Battery back-up
Versatile Bus Metering Solutions with CT/PT
Integral LV Box on top of RMU Mechanism
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15. SafeLink CB Technical Parameters
Product Portfolio
SafeLink CB
SafeLink CB Technical Parameters
Rated Voltage
12kV
Power Frequency Withstand Voltage
38kVp
Impulse Withstand Voltage
95kVp
Frequency
50Hz
Rated Current (RMU)
630A
Rated Current (Ring Switch)
Rated Current (VCB)
Short Circuit Making Current (for 12kV)
52.5kA
Short Circuit Breaking Current (VCB)
21kA
Short Time Current (for 3s) Main Circuit
Peak Withstand Current Main Circuit
Short Time Current (for 3s) Earthing Switch
Short Time Current (for 1s) Earthing Circuit
Short Circuit Making Current (ES)
Minimum Operating Pressure
1.2 bar
Mechanical Endurance (Ring Switch) M1
Mechanical Endurance (Earth Switch) M0
Electrical Endurance (Ring Switch) E3
Electrical Endurance (Earthing Switch) E2
Mechanical Endurance (VCB)
M1*
Electrical Endurance (VCB)
IAC Classification
Tank – AFL 21kA/1s
Cable Compartment – AFLR 10kA/0.1s
Cable Compartment – AF 21kA/1s (optional)
Optional Test Point Bushing
Robotic Welding of SS304 Grade Tank
2.5mm Standard thickness for Tank
2mm Standard thickness for Enclosure
IP 54 for Enclosure
Site Replaceable Cable Bushing
Compatible to Digital Upgrade (Details Follows)
*M2 optionally available
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16. SafeLink CB Design Philosophy SafeLink CB Back to Contents
Compact and Robust Design
Simulations application for design validations
Personnel safety considerations
Modern development and manufacturing techniques
Durability and recyclable for environment
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17. SafeLink CB Variations V C C SafeLink CB Back to Contents
Non-extensible configurations
Extensible configurations – on either sides & both sides
3way configuration CVC
2way configuration VC-VD-DC
1way configuration V-C
With & Without Test Point Bushings
Vertical & Horizontal Door
Cable Compartment 10kA IAC version & 21kA IAC version
PEX on either sides for future extensbility
SafeLink CB for CSS version C C
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18. SafeLink CB Design Philosophy C Module Back to Contents
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
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19. SafeLink CB Design Philosophy V Module Back to Contents
VG5 interrupter from ABB
Interruption in vacuum
Insulation provided by gas
No consumable parts
Rugged and reliable
10000 mechanical endurance operations
30000 operations of VI at rated current
Three position disconnector and earthing switch
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20. SafeLink CB Design Philosophy SF6 Gas Tank Back to Contents
Vacuum BKR aligned to T-off side with cable bushings on back side
Switch cable bushings on the left & right sides
Mechanisms for Circuit Breaker and Cable Switch on front
Disconnector manually operated
Test Point Bushings in the bottom of the tank
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21. SafeLink CB Description Product Description Back to Contents
Rating Plate
Manometer
Front Upper Mimic
Relay
VCB Disconnector Padlock
Fault Indicator
VPIS for Ring Switch RHS
Ring Switch RHS
Cable Box for Ring Switch RHS
Test Point Box for Ring Switch RHS
Switchgear Stand
Earth & Circuit Slider for Ring Switch
VCB Disconnector
Operating Handle
Door Handle
Padlocking for Switchgear Front Door
Switchgear Front Door
Gas Spring for Switchgear Front Door
Switchgear Earthing
T-Off Cable Box (For VCB)
Current Transformer (Directly mounted on VCB Bushings)
Lifting Hook for Switchgear
End Box (For extensible version only)
‘V’ module section
‘C’ module section
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22. SafeLink CB Dimensions Back to Contents Bushing C-C 100 mm Front Door
1830
1210
960
Bushing
C-C
105 mm
2020
1540
1320
Bushing
C-C
100 mm
826
Front Door
Open View
Back View
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23. Dimensions (CVC Non Extensible)
SafeLink CB
Dimensions (CVC Non Extensible)
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24. Dimensions (+CVC+ Both Sides Extensible)
SafeLink CB
Dimensions (+CVC+ Both Sides Extensible)
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25. Dimensions (+V+ Both Sides Extensible)
SafeLink CB
Dimensions (+V+ Both Sides Extensible)
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26. Dimensions (+C+ Both Sides Extensible)
SafeLink CB
Dimensions (+C+ Both Sides Extensible)
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27. Dimensions (CVC Non Extensible 21kA IAC cable box)
SafeLink CB
Dimensions (CVC Non Extensible 21kA IAC cable box)
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28. Dimensions (Foundation/Coupling)
SafeLink CB
Dimensions (Foundation/Coupling)
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29. SafeLink CB Product Portfolio SafeLink CB Back to Contents
V+M ICOG Solution
Factory fitted solution
Extremely Compact Switchgear
Optional Extensibility on left side
Motorisation/Battery back-up
Versatile Bus Metering Solutions with CT/PT
Integral LV Box below Switchgear & Metering
Single Base Frame for ease in erection
Tested as per IEC , IEC , IEC
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30. SafeLink CB Product Portfolio SafeLink CB Back to Contents
CVC+VC+, CVC+CVC+, CVC+V+, CVC+C+
Factory fitted coupled solution for 4way, 5way
Optional Extensibility on both sides
Motorisation/Battery back-up
Versatile Bus Metering Solutions with CT/PT
Integral LV Box on top of RMU Mechanism
Single Base Frame for ease in erection
SCADA Integrated as per latest IPDS specification
FRTU/PLC with Modem factory integrated
Ready for communication with different protocols
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31. SafeLink CB Product Portfolio SafeLink CB Back to Contents CVC Digital
Factory fitted digital solution
Optional Extensibility on both sides
Motorisation/Battery back-up
Versatile Bus Metering Solutions with CT/PT
Integral LV Box on side/top of RMU Mechanism
Single Base Frame for ease in erection
SCADA Integrated as per Middle East specification
FRTU/PLC with Modem factory integrated
Ready for communication with different protocols
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32. SafeLink CB Product Portfolio SafeLink CB Back to Contents
Trafo Coupled
Easy fitting in compact CSS
Optional Extensibility on both sides
Motorisation/Battery back-up
Integral LV Box on top of RMU Mechanism
SCADA Integrated / Compatible
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33. SafeLink CB Product Safety Internal Arc Classification
Tank : AFL 21kA/1s Cable Compartment : AFLR 10kA/0.1s
Tank : AFL 21kA/1s Cable Compartment : AF 21kA/1s
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34. Interlocks & Padlocks SafeLink CB
Product Safety
Interlocks & Padlocks SafeLink CB
Vacuum Circuit Breaker
Ring Switch 1
Interlock Type
Operation
Condition
Comment
Mechanical Interlock - C Module
Closing LBS
ES is open, Cable Door is closed
Standard Interlock
Opening LBS
ES is open
Mechanical Interlock - C, V Modules
Closing ES
LBS/Disconnector is open
Opening ES
Opening Cable Door
ES is closed
Mechanical Interlock - V Module
Closing CB
No interlock
Opening CB
Closing Disconnector
CB is open, ES is open, Cable Door is closed
Opening Disconnector
CB is open, ES is open
Electrical Interlock
Closing/Opening - LBS/VCB
As per customer request
Optional
Padlock
Closing/Opening - LBS/DS/ES/VCB
Only provision
Ring Switch 2
Disconnector
Ring Switch 1 & 2
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35. Cable Termination & Extensibility
SafeLink CB
Cable Termination & Extensibility
Cable Termination
Interface C (400 series) with M16 metric threads
Standard for C, F, V, D, De Modules including extensibility
Standard till 630A
For 12kV, terminal protector shall be provided as standard
For 24kV/36kV, termination kits shall be provided upto request.
For more information on cable termination details, respective catalogues/O&M Manuals shall be referred
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36. SafeLink CB Extensibility Extensibility Back to Contents
Optional extensibility on both sides
Coupling at site to existing RMU without cable disconnection
Detailed Coupling Instructions available for more information
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37. Protection, Indication & Measurement Solutions
SafeLink CB
Protection, Indication & Measurement Solutions
Protection/Indication
Measurements/Metering
Self Powered OC+EF Relays
Auxiliary Powered Feeder Protection Relays
Feeder IEDs
Voltage Indicators (Signalling contact optional)
SC+EF Indicators
Bus Metering solutions available
Indoor/Outdoor Metering
CT/PT as per site requirements/specification
SCADA Integrated metering solutions on offer
For more details, please contact ABB Sales representative
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38. Manufacturing Facility
SGIS Plant as selected as “Best in Class shop floor” by CNBC Info media TV18, industrial magazine 13th Anniversary
SafeLink CB
Manufacturing Facility
State-of-Art SGIS Manufacturing Facility
State-of-Art SGIS Plant in Nashik, Maharashtra, India
Robotic Welding Station (ABB Robots)
SCADA Automated Helium Leak Check SF6 Filling Unit
Single Piece Feed Line for Tank & Finish
Ergonomically designed lines for worker friendly
Lean Six Sigma Methodology implemented
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39. Environment Certification
SafeLink CB
Environment Certification
End of Life & Environment Certification
Life Expectancy of Products
Products developed in compliance with IEC
Design incorporates a life span of over 20 years
Switchgear is gas-tight with expected leakage rate of < 0.1%/yr
SF6 Gas Pressure is 1.4 bar
Switchgear will maintain gas-tightness (gas-pressure >=1.3bar) throughout its designed life span.
End of Life
ABB committed to protection of the environment & adheres to ISO Standards
ABB Obligates to facilitate end of life recycling of all ABB products
No explicit requirements for how to handle discarded switchgears
ABB’s recycling service is according to IEC 1634 edition 1995 section 6: «End of life of SF6 filled equipment»
In particular a: «Low decomposition»: «No special action is required; non-recoverable parts can be disposed of normally according to local regulations.»
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