HV – Gas Insulated Switchgear

A02005(1)

HV – Gas Insulated Switchgear

In order to guarantee more reliable and stable operation of electric equipment for indoor or outdoor substations, GIS acts as an integrated switchgear that monitors, controls, protects and measures the power systems with protection & control relay panels by safe opening or closing the power lines under the conditions of normal and abnormal operations.

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Features

High Safety

With metal tank completely earthed and recharging section not exposed outside. not only capacitative induction and contact incident can be avoided, but also fire prevention is accomplishment by using flame retardant SF6 Gas. As controlling lever is not exposed outside, there is no danger to operator's body when controlling.

Easy Securing Area

LSIS's GIS takes much less area & space for installation than conventional type because of drastic reduction of required area for its compact size mainly by integrating all the components within the metal SF6 Gas filled-tank which is excellent for di-electric characteristics. It is suitable particularly in a dense areas like city and a place where large space and are not available.

High Reliability

Since main parts of switchgear is sealed with SF6 Gas it's free from environmental pollution and climatic change and there's no care about dielectric deterioration by long time operation. The diffusion of accident will be prevented by Gas Section in the case of internal accident. As the operating lever is designed to fit in such manner not to be exposed outside, malfunction caused by freezing and so on can be prevented. The merit when adapting an operating method by oil pressure is that it can be used almost permanently owing to the main components composed together within the oil which lessen the concern for aging and wearing off.

Easy Installation and Maintenance

Compact product size makes it possible to shorten the installation period remarkably due to its far more simple installation method than conventional type as well as for easy transportation to site. In addition, Installation without power shut down become possible for expansion works in the future and maintenance works is possible during operation because main components are concealed within SF6 Gas without being influenced by outside factors. Unlike pneumatic generator no regular check (more than 1 time a week) is required-featuring the maintenance free type.

25.8 / 36 72.5 145 170 245 362 420
Rated Voltage kV, rms 25.8 36 72.5 145 170 245 362 420
Rated short time current kA,rms 25/40 40 20 31.5 40 50 40 50 50 63 50
Rated short time sec 3 3 1 3 3 1 3 3 1 1 3
Rated breaking current kA,rms 40 40 20 31.5 40 50 40 50 50 63 50
Rated current A,rms ~3150 1250
/2000
2000 ~3150 1250.2000,
3150,4000
Up to 3150 Up to 3150   4000 Up to 6300 4000
Rated Frequency Hz 50/60 50 60 50/60 50/60 60 50/60 50 60 60 50
Rated making current kA,peak 100 50/100 50 79 100/104 130 104 130 130 164 125
Rated breaking time Cycle 3 2
Power
Frequency
Withstand
Voltage
Common kV,rms 70 70 140 275 325 460 520 650
Across the
Insulating
distance
kV,rms 77 80 160 315 375 530 675 815
Lightning
Impulse
Withstand
Voltage
Common kV,peak 150 170 325 650 750 1050 1175 1425
Across the
Insulating
distance
kV,peak 165 195 375 750 860 1200 1175 1425(+200)
Rated operating sequence - O-0.3sec-CO-3min-CO
Phase
Arrangement
Busbar - 3Phase
Encapsulate
3Phase
Encapsulate
2Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
Single Phase
Segregated
Feeder - 3Phase
Encapsulate
3Phase
Encapsulate
2Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
3Phase
Encapsulate
Single Phase
Segregated
Single Phase
Segregated
Single Phase
Segregated
Operating
Mechanism
CB - Motor Spring Motor Spring Hydraulic Motor Spring Motor Spring Motor Spring Hydraulic Motor Spring Hydraulic Hydraulic
DS - Motor Motor Motor Motor Motor Motor Motor Motor Motor
ES - Motor Motor Manual Motor Motor Spring Motor Spring,
Manual
Motor,
Manual
Motor,
Motor Spring
Motor,
Motor Spring
Motor
Applicable Standard - IEC62271
-100,200
IEC62271
-200
IEC 62271-203 / IEC 62271-102 / IEC 62271-100 / IEC 62271-203 / IEC 62271-102