[email protected] All rights reserved MV SWITCHGEAR.
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Transcript of [email protected] All rights reserved MV SWITCHGEAR.
All rights reserved
STANDARDS
• IEC 62271-200High-voltage switchgear and controlgear –
AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
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Metal-enclosed Switchgears
Busbar Compartment
Circuit Breaker Compartment
Cable Compartment
LV Compartment
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• Main busbar system
• Branch busbar connections
• Through insulators for segregation of neighboring busbar compartments
Busbar Compartment
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• Earthing switch
• Busbar branch connections
• Power cables
• Surge arresters
• Instrument transformers (current transformers, voltage transformers)
Cable Compartment
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• Microprocessor relay protection
• Automation and SCADA elements
• Auxiliary wiring (control, supply, signalling circuits)
• Transit auxiliary wiring
• Local control and signalling elements
Low-Voltage Compartment
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Internal Construction
1 Circuit Breaker compartment1 Circuit Breaker compartment
2 Main busbar compartment2 Main busbar compartment
3 Cable compartment3 Cable compartment
4 LV compartment4 LV compartment
5 Arc duct/channel5 Arc duct/channel
6 Current transformers6 Current transformers 8 Earthing switch8 Earthing switch
7 Voltage transformers7 Voltage transformers
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Internal Arc Protection
Front
Protection
Rear
Protection
Lateral Protection
Release of hot gases from each compartment in case of internal arc fault
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IF & OF – Incoming & Outgoing Feeder
6 CablesWithdrawabl
eVT
Fixed VT + 6cables
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BR – Bus Riser
Metering Version With VT Truck
Version With No VT Truck
