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LW8-40.5KV Series outdoor high voltage SF6 circuit breaker
Use:designed for control and protection of the electric power distribution and transimission system with voltage up to 40.5kv.
Specification:
1,General description
LW8-40.5kv series outdoor high voltage SF6 circuit breaker is 3-phase AC 50HZ outdoor high coltage equipment,Is designed for control and protectiong of the electric power distribution and transimission system with voltage up to 40.5kv,it could be also applied circuit breaker connection and switching operation of capacity bank.
2,Main features
2.1,LW8-40.5kv is outdoor tank structure,mechanism simple tructure,convenient debugging installation,maintenance cycle length.
2.2,Good breakering performance.arcing time short ,breaker short current 40KA,capacity current630A.
2.3,the high pollution levels,altitude≤3000m.
2.4,surface is deal with dacromet or hot-dip galvanizing,shell use Astainless steel materials,corrosion resistance capability.
2.5,Every phase with 4 CT,or outside CT,measure accuracy could reach 0.2s.
2.6,combined with the transition stent devices for the oil and other products to replace.
3,Main technical Data:
3.1 Rated voltage:40.5kv
3.2.1 Rated insulation level(lighting impulse voltage):185/215kv(break).
3.2.2 Rated insulation level(power frequency with stand voltage 1 min):95/118kv(break).
3.3 Rated current:1250A,2000A.
3.4 Mechanical endurance:3000 times.
3.5SF6 gas rated pressure(20):0.45MPa.
3.6SF6 gas re-filled pressure(20):0.42MPa.
3.7SF6 gas lock-out pressure(20):0.40MPa.
3.8Rated short circuit breakering current:31.5KA.
3.9 Rated short circuit making current (rma):80KA.
4.0 Rated short with stand current(thermal stability current):31.5(4s)KA.
4.1Rated withstand current(rms)(dynamic stability current)(rms):80KA.
4.2Rated out-phase breakering current:10KA.
4.3Clse time(rated operation voltage):t≤100ms.
4.4Open time(rated operation voltage):t≤65ms.
4.5Rated operation sequence:o-0.3s-co-180s-co.
4.6,Rated CO single capacity bank current:400A.
4.7Annual leakage of gas:1%.
4.8SF6 moisture content20:ppm(v/v) 150.
outdoor high voltage SF6 circuit breaker