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Ring Main Unit :
   RING MAIN UNIT : TYPE GR1

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Key Features

  • SF6 gas insulation and current interruption NO FIRE HAZARD

  • Maintenance free and sealed for life contact system

  • Outdoor installation

  • Robust construction

  • Tee-off circuit breaker with integral protection system

  • Low cost cable termination

  • Fully extensible options

  • Internal arc-fault proven

  • Motorized

SPECIFICATION

  • Rated Voltage : 12kV

  • Impulse Withstand Voltage : 95kVp

  • Frequency : 50Hz

  • Normal Current, Ring Switch : 630A

  • CB : 630A

  • Short-circuit Breaking Current, CB : 20kA

  • Short-time Withstand Current : 20kA, 3 Seconds

  • Short-circuit Making Current, Ring Switch : 50kAp

  • CB : 50kAp

  • Earthing Switch : 50kAp

COMPLIANCE WITH

  • IEC56:1987, BS5311:1988  Tee-off Circuit Breaker

  • IEC3+6:1983, BS5463:1977  Ring Switch

  • IEC129:1984, BS5253:1975  Earthing Switch

  • Temperature Range  +40¡É to -25¡É

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Copyright(c)since 2003 Reliance Corp. All right reserved
1304, Kumkwang Benesta,1149-2, Jung-Dong, Wonmi-Gu,
Bucheon-city, Gyeonggi-do 420-020, KOREA