Air Insulated Switchgear (AIS)

Rated Voltage: Up to 36kV

Rated Current: Up to 630A

Rated STC: 20kA in 3 seconds

Internal Arc Fault: 20kA for 1 sec

RATING

  • Rated service voltage: 12kV - 36kV

  • Rated frequency: 50Hz

  • Rated power frequency withstand voltage: 28/38kV

  • Rated impulse withstand voltage: 75/95kVp

  • Ring switch current rating: 630A

  • Rotating arc circuit breaker rating: 630A

  • Busbar rating: 630A

  • Short time withstand current: up to 20kA 3 seconds

  • Internal arc fault withstand: up to 20kA 1 second

  • Full fault rated earthing switch

CONSTRUCTION/FEATURES

  • Outdoor installation

  • Totally sealed metal enclosed switchgear

  • Extensible type available

  • Tee-off circuit breaker with integral protection system

  • Motorised mechanism available

  • Integral cable test facility for ring switch (optional for tee-off circuit breaker)

  • Protection relay and metering application option

  • Flexible configurations – built up from basic building blocks consisting of ring switches and circuit breakers