Phase failure / phase monitoring Relays are commonly used in motor applications to measure and monitor operating parameters such as temperature, current and voltages. This is required to save the motor or its connected equipment from fault or abnormal operating conditions.
Voltage monitoring devices provide under-voltage as well as Over voltage protection. Also, it protects against voltage related issues like Phase loss, phase sequence and phase asymmetry, Neutral open, over frequency and under frequency.
Voltage monitoring devices are designed for single-phase systems as well as for 3 phase systems.
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