1. Premset : A New generation of MV Switchgear
4/14/2017
Premset : A New generation of MV Switchgear
Amith Ganasram
August 15, 2014
Premset

2. Wiki : “Innovation is finding a better way of doing something
Wiki : “Innovation is finding a better way of doing something. The term innovation can be defined as something original and, as a consequence, new, that "breaks into" the market or society.”

3. What’s Premset and where is it sold ?
4/14/2017
Premset core technical application
Compact, modular, smart ready switchgear
Circuit breaker up to 17.5KV, 1250A, 25 KA 3s, IAC 25 KA 0,5s
Market main application:
Low-end Primary
High End Secondary
Targeted segments
CIB : Commercial and Industrial Buildings
Utility : MV/MV Substations
Data Centres
Hospital
Industry
MMM
Infrastructure
Premset

4. The 5 reasons why customers love Premset
Safety of people and assets in any environments
innovative technology (Shielded Solid Insulation System (2SIS)) with reduced risk of internal arcing
Be the most reliable , compact and end-user friendly to operate
breaking-disconnecting-earthing functions in a single device with intuitive and fully interlocked operation
Highest efficiency and flexibility
highly modular and flexible design
Easy to maintain
Lowering the total cost of ownership and improving peace of mind
Smart-grid ready architecture
distributed intelligence that allows for easy integration, easy configuration, and enhanced efficiency through advanced monitoring and control.

5. Voice from Customers in MV Distribution network
4/14/2017
Voice from Customers in MV Distribution network
“ you have to take in account the smart grid trend ”
“ expected life duration of switchgear is increasing ”
“ maintenance-free is far more important than SF6-free”
“ we want a switchgear with Easy Operation for our maintenance and operation teams”
“ cost effective and compact Circuit Breakers are needed for small primary substations or loop management ”
“ no problems with GIS switchgear, because reliable in harsh environment (humidity, temperature, dust, poor installation, partial discharges) ”
“ I’ll never compromise about end-users safety ”
Premset

6. 4/14/2017
New generation of switchgear - Premset
Premset
Premset

7. Key Benefits Simple - Safe - Smart Safety Reliability Efficiency
4/14/2017
Key Benefits
Safety
Reliability
Simple - Safe - Smart
Efficiency
Flexibility
Premset

8. 4/14/2017
Premset
Totally Shielded Solid Insulation System design for optimized safety and extended equipment life 1 2 3
1- Low Voltage cabinet
2- Cable test
3- Top connections
4 - Core unit
5 - Bottom connections
6 - Bottom compartment
7 - Sensors (CTs and VTs)
8 - Gas exhaust duct 4 7 8 5 6
Premset

9. Safety & Reliability - SSIS
Totally Shielded Solid Insulation System design for optimized safety and extended equipment life
All surfaces at earth potential
No dielectric ageing
Long product life expectancy
Reduced internal arc risk
Accidentally touchable
Insensitive to harsh environment

10. Safety & Reliability - SSIS
All surfaces at earth potential
Solid insulation
covered by a
conductive layer
Well-known
Technologies
(epoxy, EPDM*)
Patented flat connectics
Busbars with shielded solid insulation
Single bus bar (630A)
Cable connection
*EPDM: Ethylene Propylene Diene Monomer rubber

11. Electrical field calculation .
Safety & Reliability - SSIS Earth shield continuity ensured by Patented Flat Interface
4/14/2017
Main advantages compared with traditional conical interface
Simplicity of installation
Compactness
Flexibility
Flat interface cross-section
Electrical field calculation .
Premset

12. Safety & Reliability – 3 Position Scheme
4/14/2017
Safety & Reliability – 3 Position Scheme
Disconnection in vacuum & earthing switch in controlled air
redundancy of isolation
- vacuum bottles for breaking and disconnection
- controlled air for downstream earthing switch in sealed-for-life screened tank.
Breaking and disconnection
Earthing
switch
Operation of earthing
switch
Operation of main
switch
Premset

13. Safety & Reliability - Interlocking
4/14/2017
Safety & Reliability - Interlocking
3-in-1 integrated architecture: easiest and safest operation, with built-in interlocking
“The most intuitive operations for breaking, disconnection and earthing”
Premset 13

14. Safety & Reliability – 3 Position Scheme
4/14/2017
Safety & Reliability – 3 Position Scheme
Disconnection in vacuum & earthing switch in controlled air
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15. Safety – Cable Testing Device
4/14/2017
Safety – Cable Testing Device
Cable testing and diagnosis: dedicated device, for easy access and total safety
Cable testing without accessing cable box or dismantling cable connections
Test device connection from the front of the switchboard, while cables remain earthed
Failsafe interlocks with earthed star point
Easy cabling All cables connections are aligned in front at a height of 700 mm
Premset

16. Safety – Cable Testing Device
4/14/2017
Safety – Cable Testing Device
Cable testing and diagnosis: dedicated device, for easy access and total safety
Premset

17. Safety & Reliablity – Live Cable Interlocking
4/14/2017
Safety & Reliablity – Live Cable Interlocking
Live cable interlock - Electrical lock-out of earthing switch when live cables
Earthing switch lock-out function
- Prevent the earthing switch to be closed on earth when cables are still alive
- Positively blocked in case of auxiliary power loss
Override unlocking by key
Remote indication of locked position
Premset

18. Efficiency Flexible approach & Embedded intelligence in switchgear
4/14/2017
Modules fully integrated in functional unit
- Including sensors, switchgear interface, power supply, communication, HMI
- Pre- engineered, factory-tested, cost effective
- Easy integration based on :
. Field bus communication between modules
. Pre-cabling inside cubicle
- Gradual solution : from local control up to complex feeder automation
Today: set of products to connect
- Protections: Sepam, Micom
- Measurement metering: Power Logic
- Local fault monitoring & Remote control: Easergy
Easergy
Sepam & Micom
Power Logic
Premset

19. Efficiency “Integrated intelligence” in MV switchgear
RTU/ATS
Power Supply
R200
PS100
Modbus
SC100
Flair
PM200
VIP
Fault
detection
Energy Quality
Monitoring
Switch Controller
Self powered
Protection
Smart
- IEC61850 access to Substation automation through gateway (G3200…)

20. Efficiency Low cost Supervision & Control system
4/14/2017
Efficiency
Low cost Supervision & Control system
Switchboard information is stored in a Web page
Need just a PC, Tablet, Smart Phone with a standard Web browser
Example of web access
Premset

21. Flexibility A new level for MV switchgear Modularity ► assembly of functional bricks
LV cabinet
Cable test
Top connection
Core unit
LBS
LBS CB
Metering CB CB
Bottom
connections
Bottom
compartment

22. Technical Description & Applications
4/14/2017
Technical Description & Applications
Premset

23. Main Characteristics Internal arc INDOOR OUTDOOR
4/14/2017
Main Characteristics
Rated voltage 15 kV
Short time withstand 25 kA x 3s*, 21 kA x 3s, 20 kA x4s
Rated busbar current 630 A, 1250 A (under development)
Rated BIL withstand voltage 95 / 110 kV
Rated PF withstand voltage 42 / 48 kV 1mn
Cable earthing switch 25 kA, M0, E2
Degree of protection IP3X (indoor), IP54 (outdoor)
Dimensions W x H x D (mm) 375 x 1600 x 900 (indoor)
Range
INDOOR
* : 25kA x 3s
on request
Internal arc
Standard design is virtually arc free
Optional : type tested 21KA 1s A-FLR / 25KA 0.5s A-FLR
: top or bottom exhaust
Comply with new IEC standard ALFR
OUTDOOR
Premset

24. Four basic functional units
4/14/2017
Four basic functional units
100 or 200A disconnecting circuit breaker
O-15 sec- CO
2000 operations
► D01-02 N
Transformer protection
630A disconnecting circuit breaker
O-15 sec-CO.
2000 operations
► D06 N
Feeder protection
630A disconnecting circuit breaker
O-0,3s-CO-15s-CO
10,000 operations
► D06 H
Feeder protection
Auto-reclose
630A disconnecting load break switch
1000 operations
► I06 T
Network management
Premset

25. Typical applications IEC standard 62271-200 ALFR Building Industry
4/14/2017
Typical applications
Building
Industry
Energy
2.25 m
2.25m
3.75 m
3.75 m
IEC standard ALFR
Premset

26. MV Innovation in 20 years – Premset !
4/14/2017
MV Innovation in 20 years – Premset !
Premset

27. Thank you for your attention…
4/14/2017
Thank you for your attention…
Amith Ganasram
Cell :
Tel:
Premset