LW8A-40.5W/T2000-31.5戶外型SF6斷路器適用于交流50HZ、額定電壓40.5kV的三相電氣系統(tǒng)。它用于控制和保護(hù)電氣系統(tǒng)以及測(cè)量電流互感器。
結(jié)構(gòu)特點(diǎn)
1.LW8A-40.5六氟化硫斷路器為戶外瓷瓶柱結(jié)構(gòu) 2.采用壓縮空氣滅弧室，分?jǐn)嘈阅軆?yōu)異，電氣壽命可達(dá)20次； 3.密封性能可靠，靜密封采用“O”型密封圈結(jié)構(gòu)，動(dòng)密封采用帶彈簧壓力補(bǔ)償結(jié)構(gòu)的“V”型密封環(huán)。變壓器二次接線板采用壓注工藝生產(chǎn)，抗老化性能強(qiáng)，保證年漏氣率＜0.5% 4.安裝底盤和支架采用整體軋制鋼板 5.內(nèi)部或外部電流互感器的測(cè)量級(jí)鐵芯由高磁導(dǎo)率的微晶合金材料制成 技術(shù)參數(shù)No 名稱Name 數(shù)值Data 1 額定電壓Rated voltage 40.5 2 額定電流Rated current(A) 1600/2000 3 額定絕緣水平
Rated Insulate
evel工頻耐壓(1min)
Power frequency withstand voltage(kV)/1min95 雷電沖擊耐受電壓
Thunder impulse withstand voltage (kV185 4 額定短路開斷電流Rated short-circuit breaking current(kA) 25/31.5 5 額定失步開斷電流Rated out-of-phase breaking current (kA) 7.9/10 6 異相接地故障開斷電流(kA)breaking current of earth fault in different phase(kA 27.4/34.8 7 額定單個(gè)電容器組開斷電流Rated breaking current of single capacitor bank(A 400 8 額定操作順序Rated Operating sequence O-0.3S-CO-180S-CO 9 SF6氣體額定電壓Rated SF6 gas pressure(Mpa) 0.5 10 分閘時(shí)間ms(額定電壓)Switch-off time(on rated voltage)(ms 30≤t<40 11 合閘時(shí)間ms(額定電壓)Switch-on time(on rated voltage)(ms 60≤t<80 12 額定短路關(guān)合電流(峰值)Rated shot-circuit making current(peak)(kA) 63/80 13 額定短路持續(xù)時(shí)聞Rated short-circuit duration(s 4 14 額定短路耐受電流Rated short-circuit with stand current (kA) 25/31.5 15 額定峰值耐受電流Rated peak value withstand current(kA 63/80 16 機(jī)械壽命試驗(yàn)(次)Mechanical life(time 10000 17 額定短路開斷電流31.5kA/40kA累計(jì)開斷次數(shù)(次)
Cumulative breaking times of rated short-circuit breaking
current 31.5 kA/40kA(time20 18 額定電流累計(jì)開斷次數(shù)(次
Cumulative breaking times of rated current(time2000 19 SF6氣體年漏氣率(%)Annual leakAge rate of SF6(% <0.5 20 SF6氣體微量水分含量(V/W)(PPM)Water content of SF6(V/V)(PPm <150 21 斷路器外絕緣泄露比距(mm/kV)Outer insulating leakAge ratio distance(mm/kV) >25 22 斷路器質(zhì)量kg Weight of the circuit breaker 1000
外形尺寸及安裝圖
