Switchgear

JST Power Equipment provides a wide range of competitively priced medium voltage, gas insulated switchgear (GIS) solutions including; primary and secondary distribution designs supporting a diverse range of applications, industries and clients.


Design Standards

IEC62271-1
Common specifications for high voltage switchgear and controlgear standards

IEC62271-200
Alternating current metal enclosed switchgear and controlgear for rated voltages about 3.6kV and up to incing 40.5kV

IEC62271-103
High voltage alternating current switches for rated voltage above 3.6kVand less than 40.5kV

IEC62271-105
High Voltage alternating current switch fuse combinations

IEC62271-102
High voltage alternating current disconnectors and earthing switches

IEC62271-100
High voltage alternating current circuit breakers

IEC480
The guide for management and measuring SF6 gas in electrical equipment

GB11023
Test guide for SF6 gas tightness for high voltage switchgear

GB12022
Industrial sulfur hexafluoride

GB11033
Basic technical requirements for power cable accessories with rated voltage up to 26/35kV


Product Range

C-GIS – Is a robust, industrial optimized medium voltage solution utilizing SG6 gas as an insulating medium.  C-GIS is offered in a wide range of ratings designed for use in primary distribution applications.  We offer a variety of panel configurations at the following preferred ratings:

  • 40.5kV / 1,250-2,500A / 31.5kA
  • 12-24kV / 1,250-2,500A / 25-31.5kA

RMU – Ring Main Unit is a medium voltage solution utilizing SF6 gas as an insulating medium.  RMU is offered in a range of ratings designed for use on secondary distribution applications.  We offer a variety of panel configurations to suit all the required needs at the following preferred ratings:

  • 40.5kV / 630A / 25kA
  • 12-24kV / 630-1,250A / 20-25kA

Nitrogen RMU – Is an Eco-Friendly Ring Main Unit used on medium voltage applications utilizing N2 gas as an insulating medium.  For use in lighter duty secondary distribution applications, we offer a variety of panel designs at the following standard ratings:

  • 12kV / 630A / 20kA

Solid-Insulated RMU – Is a Ring Main Unit for use on medium voltage applications utilizing an epoxy resin composite as an insulating medium.  For use on secondary distribution applications, we offer a variety of panel designs at the standard ratings:

  • 12kV / 630A / 25kA

Semi-insulating RMU – Is a Ring Main Unit used on medium voltage applications using SF6 gas and Air as an insulating medium.  For use on lighter duty secondary distribution applications, we offer a variety of panel designs at the following standard ratings:

  • 12kV / 630A / 20kA

Product Specifications

40.5kV C-GIS

Description

  • C-GIS:GMU-40.5/2500-31.5
  • Applications: rail transportation, transformer substation, new energy step-up power station

Parameters

  • Rated Voltage:40.5kV
  • Rated Current:1250~2500A
  • Insulating Medium:SF6
  • Rated Shorr-circuit Breaking Current:31.5kA
  • Rated Short-time withstand current and peak current:31.5KA/4s,80KA
  • W*D*H:600-800*1600*2400

12kV/24kV C-GIS

Description

  • C-GIS:GMU-12 (24)/2500-31.5
  • Applications: tramcar, transformer substation

Parameters

  • Rated Voltage:12kV,24kV
  • Rated Current:1250-2500A
  • Insulating Medium:SF6
  • Rated Short-circuit Breaking Current:25.31.5kA
  • Rated Short-time withstand current and peak current:25KA/4s,63kA(peak)31.5kA/4s,80kA(peak)
  • W*D*H:500-800*1300*2400

40.5kV RMU

Description

  • SF6 RMU:GMU-40.5/630-25
  • Applications: new energy fields of photovoltaic & wind energy, power distribution of large industrial and mining enterprises

Parameters

  • Rated Voltage: 40.5kV
  • Rated Current:630A
  • Insulating Medium:SF6
  • Main Functional Module: vacuum circuit breaker, load switch, switch-fuse combinations
  • Rated Short-circuit Breaking Current:20/25kA
  • W*D*H:450*1000*1700-H

12kV/24kV RMU

Description

  • SF6 RMU:QMU-12(24)/1250-25
  • Applications: secondary power distribution sub-section post

Parameters

  • Rated Voltage: 12kV,24kV
  • Rated Current:630~1250A
  • Insulating Medlum:SF6
  • Main Functional Module: vacuum circuit breaker, load switch, switch-fuse combinations
  • Rated Short-circuit Breaking Current: 20/25KA
  • W*D*H:350*800*1450-H

Nitrogen RMU

Description

  • Eco-Friendly gas insulated RMU:GMU-N-12/630-20
  • Applications: secondary power distribution sub-section post, power distribution room of newly built housing estate

Parameters

  • Rated Voltage: 12kV
  • Rated Current: 630A
  • Insulating Modium:N2
  • Main Functional Module: vacuum circuit breaker, vacuum load switch
  • Rated Short-circuit Breaking Current: 20kA
  • W*D*H:440*800*1450-H

Solid-Insulated RMU

Description

  • Solid-Insulated RMU:SMU-12/630-25
  • Applications: secondary power distribution sub-section post, power distribution room of newly built housing estate

Parameters

  • Rated Voltage: 12kV
  • Rated Current: 630A
  • Insulating Medium: epoxy resin composite
  • Main Functional Module: vacuum circuit breaker, vacuum load switch, switch-fuse combinations
  • Rated Short-circuit Breaking Current:25kA
  • W*D*H:440*898*1800-H
  • Structure: separate panels, common panel

Semi-Insulating RMU

Description

  • Semi-insulating RMU:GMU-H-12/630-20
  • Applications: power distribution room of newly built housing estate

Parameters

  • Rated Voltage:12kV
  • Rated Current:630A
  • Insulating Medium:SF6 and air
  • Main Functional Module: vacuum circuit breaker, vacuum load switch, switch-fuse combinations
  • Rated Short-circuit Breaking Currenl:20kA
  • W*D*H:375*915*1800~H

Sub-Section Post

Description

  • Outdoor Sub-section Post:XGW-12/24/40.5
  • Applications: secondary distribution of municipal services and power grid

Parameters

  • Rated Voltage:12/24/40.5kV
  • Rated Cumrent:630-1250A
  • Insulating Medium:SF6 insulated RMU, Eco-Friendly Gas RMU, Solid-Insulated RMU
  • Main Functional Module: vacuum circuit breaker, vacuum load switch, switch-fuse combinations, DTU
  • Outdoor Substation: stainless steel, wood landscape, GRC glass fiber, composite board, etc.
  • Customized production

Substation

Description

  • Substation: YB HV/LV prefabricated substation
  • Applications: new energy, power distribution of industrial and mining enterprises and housing estate
  • Enclosure: internal fault class-IAC-A/B passed
  • Rated Voltage:(7.2/24/40.5)kV/400V
  • Rated Capacity:50-2000KVA