Ring Main Unit - GR1

Ring Main Unit - GR1
  • Rated service voltage: 12kV
  • Rated frequency: 50/60 Hz
  • Rated power frequency withstand voltage: 38kV
  • Rated impulse withstand voltage: 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
  • 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.
*Products above are OEM manufacture for Tamco Switchgear.