The SF6 Gas Insulated Switchgear (GIS) contains major substation equipment, such as the gas circuit breaker, disconnecting switch, earthing switch, voltage transformer, current transformer, and lightning arrester, within a grounded metallic enclosure filled with SF6 gas to provide the best possible insulation and arc-quenching capabilities.
ILJIN’s GIS is the most highly-developed switchgear on the market today. Our products provide features such as compact designs, safety, reliability, simplified operation, long maintenance intervals and compatibility with surrounding systems. Our recently developed 3-phase encapsulated GIS is an example of the economical and compact substation design our customers have come to know and expect from ILJIN.
[Feature & Advantage]
· A circuit breaker which surpasses the KERI and KEMA standards outlined in the latest IEC standards (IEC 62271-203 & IEC 62271-100).
· A phase common enclosure for fewer components and no errors.
· A high-quality circuit breaker featuring a hydraulic operating mechanism (170kV GIS) or a motor operated spring mechanism (25.8kV, 36kV, 72.5kV GIS, 145kV GIS, 245kV GIS).
2) Compact Design
· A small and lightweight phase common enclosure design (72.5kV GIS, 145kV GIS, 170kV GIS).
· A CT housed in the CB and a line disconnecting switch, line earthing switch, and work earthing switch contained in a single enclosure to reduce size and weight.
· A CB motor operated spring mechanism adopted to make our GIS lighter and more compact than comparable models (25.8kV, 36kV, 72.5kV GIS, 145kV GIS, 245kV GIS).
· Earthed enclosure to provide improved protection against current leakage.
· Interlocking system to optimize system operation.
4) Modular Design
· Standardized modules to improve production quality and allow for easy assembly.
5) Gas Tightness
· Standardized sealing ring (O-ring) system to reduce the number of pipes and valves in each system and improve gas tightness.
6) Adoption of the Puffer & Hybrid Type Gas Circuit Breaker
· Puffer & hybrid type gas circuit breaker for simplified construction, fewer components, no gas heating of components, and enhanced reliability.