SD-ZLD 型漏电保护器是一种针对工业动力用电设备而设计的专用型智能漏电保护装置。采用微机控制芯片，具有测量范围广、精度高等特点。
该产品同L型剩余电流互感器和断路器组成漏电保护系统。适用于AC690V及以下电网系统，用于对末端线路或动力设备的漏电保护使用。为防止因漏电造成动力设备损坏以及人身触电危险提供间接保护作用。
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SD-ZLD type current leakage protection relay is a kind of smart device specifically designed for industrial power equipment. It takes microcomputer-controlled chip, having the features such as wide range of measurement, high precision and so on.
Used together with L type residual current transformer and circuit breaker forms current leakage protection system. It applies to power system up to AC690V for current leakage protection of the downstream line or power equipment, to prevent the power equipment and personnel from damage or electric shock indirectly cause of current leakage.
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