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Premset : A New generation of MV Switchgear

Premset : A New generation of MV Switchgear. Amith Ganasram August 15, 2014. 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.” .

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Premset : A New generation of MV Switchgear

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  1. Premset : A New generation of MV Switchgear AmithGanasram August 15, 2014

  2. 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 ? • 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

  4. 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-freeis 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”

  5. New generation of switchgear - Premset Premset

  6. Key Benefits Safety Reliability Simple - Safe - Smart Efficiency Flexibility

  7. Premset Totally Shielded Solid Insulation System design for optimized safety and extended equipment life 1 2 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 3 4 7 5 8 6

  8. 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

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

  10. Safety & Reliability - SSISEarth shield continuity ensured by Patented Flat Interface Main advantages compared with traditional conical interface • Simplicity of installation • Compactness • Flexibility Flat interface cross-section Electrical field calculation .

  11. Safety & Reliability – 3 Position Scheme Disconnection in vacuum & earthing switch in controlled air • redundancy of isolation • - vacuumbottles 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

  12. 3-in-1 integrated architecture: easiest and safest operation, with built-in interlocking Safety & Reliability - Interlocking “The most intuitive operations for breaking, disconnection and earthing”

  13. Safety & Reliability – 3 Position Scheme Disconnection in vacuum & earthing switch in controlled air

  14. Easy cabling All cables connections are aligned in front at a height of 700 mm 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

  15. Safety – Cable Testing Device Cable testing and diagnosis: dedicated device, for easy access and total safety

  16. 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

  17. Efficiency Flexible approach & Embedded intelligence in switchgear • 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

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

  19. 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

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

  21. Technical Description & Applications

  22. Rated voltage15 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 Main Characteristics INDOOR * : 25kA x 3s on request OUTDOOR • 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 62271-200 ALFR

  23. Four basic functional units 630A disconnecting circuit breaker O-0,3s-CO-15s-CO 10,000 operations ► D06 H Feeder protection Auto-reclose 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 load break switch 1000 operations ► I06 T Network management

  24. Typical applications Building Industry Energy 2.25m 2.25 m 3.75 m 3.75 m IEC standard 62271-200 ALFR

  25. MV Innovation in 20 years – Premset !

  26. Thank you for your attention… AmithGanasram Cell : 076 411 2263 Tel: 011 254 6638 Email: amith.ganasram@schneider.electric.com

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