GIS - Gas Insulated Switchgear

Our gas-insulated switchgear (GIS) units are suited for indoor and outdoor applications in power plants and substations. All our GIS products are manufactured to comply with the advanced international standards and built with state-of-the-art technology to help power plants and substations operate cost-effectively while reducing their environmental impact.

145 kV Smart GIS

Indoor and Outdoor GIS are generally selected for many types of power plants and substations to suit in various environment and needs. When it comes to performance and reliability, our GIS products fully comply with the latest international standards.
With use of state-of-the-art technology and advanced quality control, alfanar is determined to provide a cost effective and environment friendly service for plant operation.

Technical Specifications:

Rated Voltage kV,rms 145
Rated short time current kA,rms 40
Rated short time sec 3
Rated breaking current kA,rms 40
Rated current A,rms 3150
Rated Frequency Hz 50/60
Rated making current kA,peak 100/104
Rated breaking time Cycle 3
Power Frequency Withstand Voltage Common kV,rms 275
Across the Insulating distance kV,rms 315
Lightning Impulse Withstand Voltage Common kV,peak 650
Across the Insulating distance kV,peak 750
Applicable Standard - IEC 62271-203 / IEC 62271-102 /
IEC 62271-100 /
IEC 62271-203 / IEC 62271-102


36 KV GIS Switchgear

alfanar Gas insulated switchgears meet the electric systems requirements of increasing capacity according to expansion of consumers and large plants. The design and constitution of our GIS offers high reliability, safety and convenience in such a compact size. alfanar adopts procedures for production, delivery and technical service which are fully environment-friendly under control of ISO 14001 for our future generation, which include minimizing the user of SF6 gas.

Technical Specifications:

Rated Voltage kV,rms 36
Rated short time current kA,rms 40
Rated short time sec 3
Rated breaking current kA,rms 40
Rated current A,rms 1250/2000
Rated Frequency Hz 50/60
Rated making current kA,peak 50/100
Rated breaking time Cycle 3
Power Frequency Withstand Voltage Common kV,rms 70
Across the Insulating distance kV,rms 80
Lightning Impulse Withstand Voltage Common kV,peak 170
Across the Insulating distance kV,peak 195
Applicable Standard - IEC62271-200