[email protected] All rights reserved MV SWITCHGEAR.
-
Upload
preston-allen -
Category
Documents
-
view
218 -
download
0
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
All rights reserved
Metal-enclosed Switchgears
Busbar Compartment
Circuit Breaker Compartment
Cable Compartment
LV Compartment
All rights reserved
• Main busbar system
• Branch busbar connections
• Through insulators for segregation of neighboring busbar compartments
Busbar Compartment
All rights reserved
• Earthing switch
• Busbar branch connections
• Power cables
• Surge arresters
• Instrument transformers (current transformers, voltage transformers)
Cable Compartment
All rights reserved
• Microprocessor relay protection
• Automation and SCADA elements
• Auxiliary wiring (control, supply, signalling circuits)
• Transit auxiliary wiring
• Local control and signalling elements
Low-Voltage Compartment
All rights reserved
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
All rights reserved
Internal Arc Protection
Front
Protection
Rear
Protection
Lateral Protection
Release of hot gases from each compartment in case of internal arc fault
All rights reserved
IF & OF – Incoming & Outgoing Feeder
6 CablesWithdrawabl
eVT
Fixed VT + 6cables
All rights reserved
BR – Bus Riser
Metering Version With VT Truck
Version With No VT Truck