High Performance Current Sensing for Automation Applications
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Ground Fault Monitoring on Heat Trace Systems

Heat trace cable is used to keep pipes or their contents from freezing, or to keep Ground Fault Monitoring on Heat Trace Systemsthe contents at a constant temperature while being transferred from one location to another. The most common type of heat trace cable is the self-regulating type. Self regulating cable contains two conductors and is usually physically attached to the pipe and is therefore is subject to mechanical damage. NK Technologies’ Ground Fault Sensor are frequently installed to monitor heat trace circuits and systems. When a ground fault is detected, a circuit interruption device, like a contactor or shunt-trip circuit breaker, is used to automatically disconnect the faulty circuit. In many situations NEC and/or local electrical codes require the installation of ground fault interruption devices. However ground fault sensors are commonly installed, even if not required by code, in order to monitor the condition of the heat trace cable and installation and maintain safety. Faulty circuits can be identified and then repaired or replaced at a convenient time.

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