The LE earth fault sensor is used for reliable detection of earth fault currents in medium-voltage networks. The connection to the display device is potential-free via an optical fiber cable, which ensures reliable signal transmission. The sensor is installed on shielded conductors and detects the total current via a multi-layer steel band that is placed around the three conductors of a cable. Thanks to its separable design, it can be easily retrofitted in existing systems. The response value can be conveniently adjusted using a rotary switch.
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