126/2500-40 GIS is composed of circuit breaker,disconnector,earth switch,current transformer,voltage transformer,lighting arrester,busbar,incoming & outgoing busing or cable terminal box,ect.Adopted the structure of three-phase-one-enclosure,3-work-position disconnector and full aluminum alloy enclosure,can be used in power plant and substation with 126KV AC electric system,it has advantages of minimal space requirement (width is 0.8m),high reliablility,short installation period and low maintenance workload,etc.Suitable for urban substation that is tight in space,enterprise substations,hydropower plants and heavy pollution area.
Compact structure,minimal occupation of space,the width is only 0.8m;
Standardized and modularized design,flexible layout,suitable for all kinds of users for different connection mode:includes single-busbar,double-busbar,line-transformer,bridge type connection,one and half times circuit breaker wiring,etc.
All enclosures are made of aluminum alloy,light in weight,convenient to layout in any floor,minimal ground weight bearing.
Aesthetic appearance and harmonius with the environment,no radiation,non-effective to communication,no pollution,suitable for all kinds of environment conditions.
Unique"hot expansion room+auxiliary puffer",which can decrease gas resistance pressure,opening speed and lighten weight of moving parts,thereby reduce the operation power and enhance the reliability.
It can realized three work positions:connecting,disconnecting and earthing,combination of DS & ES can reduce quantity of parts,enhance the reliability,and radically ensure the interlock between disconnector and earthing switch.
Busbar 3-work-position DS/ES,combined busbar,DS and ES.Line 3-work-position DS and ES,combined corss junction,DS,ES.The structure can reduce the quantity of parts,therefore improve the reliability.
Adopted structure with aluminum outer ring,not only improved the stress on the basin type insulator,prevent electromiagnetic radiation leakage,it also enable to resist the induced voltage outside the enclosure.
126kV GIS main technical parameters
General structure of GIS
DS/ES is a three-phase mechanical linked switch,mechanical operated or manual operated by an electric
mechanism.DS-ES 3-work-position is "opening-closing-earthing",turn one position to another by the movement
of moving contact.
Three-phase-one-enclosure is adopted,share one set of mechanical linkage of spring operating mechanism.
4.Degree of contamination:IV(31mm/kV);
6.Humidity(relative humidity indoor day average≤95%);
7.Earthquake-proof intensity:artificially synthesized eqrthquake wave 0.25g sine resonance wave 0.15g