*|LJ(X)Z-Φ65（0.5）|系列零序互感器|超高壓互感器
●LJZ-Φ65 ( Φ75) 型零序電流互感器適用于0.5千伏及以下.交流50Hz錢路中.
*|LJ（X）Z-Φ65（0.5）|系列零序互感器|超高壓互感器
概述和型號(hào)含義 Description and Meaning ofModel
●LJZ-Φ65 （ Φ75） 型零序電流互感器適用于0.5千伏及以下.交流50Hz錢路中.作為有關(guān)電力系統(tǒng)高壓三相交流發(fā)電機(jī)、電動(dòng)機(jī)的零序過電流保護(hù)之用。本型電流互感器只適用于戶內(nèi)，且三相三芯電纜的外徑不大于Φ65（Φ75）毫米。
結(jié)構(gòu)特點(diǎn) Charaderistic of strudure:
●LJZ-Φ65 （75 ）型零序電流互感器為全封閉澆注式，體積小，氣候適應(yīng)性強(qiáng)，采用外加電容器補(bǔ)償，保護(hù)靈敏度高。
●本零序電流互感器的鐵心采用優(yōu)質(zhì)冷軋砂鋼片卷制為環(huán)形，互感器的兩個(gè)二次線圈沿鐵心繞制.其中線圈Kl、K3有一個(gè)抽頭為K2，線圈a、x沒有抽頭.導(dǎo)電材料為漆包線。有Φ65（75mm）窗口供三相電纜穿入，零序電流互感器采用非碰性材料的底極.其上裝有金屬銘牌。
.This transformcr is epoxy resin casted withωtally-enclosed structure，wi也 smallsize，good flexibility for all kinds of climates. It adopts capacitors compensation，high prote ction sensitivity. This transformer use the advanced si1icon steel piece which is rolled into ring ty肘， the two secondary winding oftransformerrolled along the core，the coil Kl and K2with K2 tap. The coil aandx without the tap，the leadmaterialis lacquered wire， with the 中65皿.m（75m叫windowfor 也ree phase cableωgo through. This transformer adopts non- magnetism ma臼:rial base wi也 metal nameplate.
技術(shù)參數(shù) Technical data
·電氣絕緣強(qiáng)度:本零序電流互感器為母線式，故只考核二次線圈的絕緣性能;
·兩個(gè)二次線圈對(duì)地、兩個(gè)二次線圈之間的絕緣電阻不低于10兆歐:
·兩個(gè)二次線圈對(duì)地、兩個(gè)二次結(jié)圈之間應(yīng)能承受工頻試驗(yàn)電壓 3千伏{有效值}歷時(shí) 1分鐘;
·保護(hù)靈敏度;本零序電流互感器的靈敏度應(yīng)滿足下表要求。
Electric insulation intcnsity，this transfl口rmcr is busbar typc，just consider the insulation function of the sec口ndary winding.
.The two sccondary coi1 to car氈， the insulation resistancc bctwccn the two secondary coi1s is not less than 10 tcraohm，
.The two secondary coi1 to car氈， the one Minutc power 仕cquency withstand voltage between the two secondary coi1s is 3kV （valid）
.High protection sensitivity，the sensitivity oftransformer should meet the requirement in the ablejust test the insulation function ofthe secondary winding
