Power Supply Detector 3-phase

The power supply detector is used to protect devices powered by a three-phase power supply (e.g. motors) from damage, in the event of phase loss or unbalance of phase voltages. The trigger voltage threshold can be set by the user via a potentiometer. The system does not protect against an unbalanced voltage drop. The system is powered from the L1 phase. The shutdown delay and voltage hysteresis cause the system to withstand short-term voltage fluctuations.

It is designed for use in situations where it is necessary to determine the status of the supply voltage. The module has an optical status indicator for the measured voltage for each monitored phase. The device provides galvanic isolation between the control circuit (CIIM module) and the monitored applied voltage. The TBW 3-pin connector must be connected to one of the input terminals (marked as Inputs 1–4), while the terminals must be installed in terminals 11 and 12 (NC configuration), or 12 and 14 (NO configuration). Supplied as standard with 2.5-meter cable with a TBW 3-pin plug.