|
适用范围 |
本型互感器用于户内,供额定电压500V,额定频率50Hz的交流线路中作电流,电能测量和继电保护之用。 |
结构 |
本型互感器5-800安的铁心为环形铁心,1000-3000安为矩形卷铁心。二次线圈沿铁心周围均匀分布,LMZ及LMZJ型为树脂浇注作绝缘,LMK型塑料压制而成的外客作绝缘。下部有安装板供固定安装之用,中间窗孔供一次铝母线通过之用。
产品出头标记:一次在外壳上部有L1字样,二次在出线端有K1、K2字样。当一次电流由L1流入时,二次电流由K1流出,经由外部回路流回K2,即为减极性。当一次有电流通过时,二次不得开路,否则二次侧有高电压。 |
3.0级电流互感器专供继电保护用,当二次负荷为4.0欧时其10%倍数不小于6倍。
本型互感器可在110%的额定电流下长期运行。
本型互感器运行时,次级不得开路,次级开路时有高电压。
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