*|LJ（X）Z-Φ65（0.5）|系列零序互感器|超高压互感器

概述和型号含义 Description and Meaning ofModel

●LJZ-Φ65 （ Φ75） 型零序电流互感器适用于0.5千伏及以下.交流50Hz钱路中.作为有关电力系统高压三相交流发电机、电动机的零序过电流保护之用。本型电流互感器只适用于户内，且三相三芯电缆的外径不大于Φ65（Φ75）毫米。

结构特点 Charaderistic of strudure:

●LJZ-Φ65 （75 ）型零序电流互感器为全封闭浇注式，体积小，气候适应性强，采用外加电容器补偿，保护灵敏度高。
●本零序电流互感器的铁心采用优质冷轧砂钢片卷制为环形，互感器的两个二次线圈沿铁心绕制.其中线圈Kl、K3有一个抽头为K2，线圈a、x没有抽头.导电材料为漆包线。有Φ65（75mm）窗口供三相电缆穿入，零序电流互感器采用非碰性材料的底极.其上装有金属铭牌。
.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.

技术参数 Technical data

·电气绝缘强度:本零序电流互感器为母线式，故只考核二次线圈的绝缘性能;
·两个二次线圈对地、两个二次线圈之间的绝缘电阻不低于10兆欧:
·两个二次线圈对地、两个二次结圈之间应能承受工频试验电压 3千伏{有效值}历时 1分钟;
·保护灵敏度;本零序电流互感器的灵敏度应满足下表要求。
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毡， the insulation resistancc bctwccn the two secondary coi1s is not less than 10 tcraohm，
.The two secondary coi1 to car毡， 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