|Application. Enclosed supply monitoring relay to monitor an essential 3 phase supply for under-voltage, over-voltage, phase imbalance, phase rotation and time delay.
For the accurate detection of Symmetrical under-voltage and asymmetrical phase imbalance and phase rotation on a 3 phase AC supply coupled with the user friendly, calibrated, controls for the setting of both under-voltage and phase imbalance trip levels.
Active filters are included within the measuring circuits aimed at reducing the risk of errors or nuisance tripping caused by harmonics and true, visible, indication of the output status of the device is achieved by means of a dual colour LED.
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