JST Power Equipment

Competitively priced medium voltage, gas insulated 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.

JST Power EquipmentGas Insulated Switchgear

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

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