Medium Voltage Switchgear:
Generally the voltages range from 1KV to 36 KV its called medium voltages. for handling these medium voltages we used medium voltage switchgear. medium voltage switchgear also having the combination of outgoing feeder, control switch , disconnect fuses, auto/remote controls, protection relays, and circuit breakers for protecting safe ON/OFF operations. Mostly for these medium voltage switchgear is used circuit breakers are SF6, vacuum circuit breaker, and oil. during the switchgear open and closing operation because of these medium voltage there will be chance for arc flashover happen. so preventing these arc flash over these oil, vacuum, gas quenching mediums are used.
Types of Medium Voltage switchgear:
- Indoor type metal enclosed medium voltage switchgear
- Outdoor type metal enclosed medium voltage switchgear
Indoor type metal enclosed :
The indoor type metal enclosed medium voltage switchgear are combination of individual feeders and compact or removable type circuit breakers. mostly indoor type medium voltage switchgears are used SF6 and Vacuum circuit breaker for switchgear ON/OFF controlling operation. indoor type medium voltage switchgears are having two bus bar section and connected with bus tie. and also having mechanical interlocking facilities and earthing switches for upstream and downstream protections.
Outdoor type metal enclosed:
The outdoor type metal enclosed medium voltage switchgear are combination of feeders and rolling circuit breakers. mostly outdoor type medium voltage switchgears are used SF6 and oil circuit breaker for switchgear ON/OFF controlling operation. outdoor type switchgears are used for distribution and transmission side. medium voltage switchgears also having protection of mechanical interlocking and electrical interlocking and earthing disconnect switches also there.
Application of medium voltage switchgears:
- medium voltage switchgears are used in many more industries handling the equipment with medium voltages.
- refineries and electrical substation mostly used medium voltage switchgears
- utilities and power substations are used medium voltage switchgears
- Airport and railway traction all other transports are used medium voltage switchgears.