DPA52 3-Phase Sequence and Phase Loss monitoring relay Benefits Measuring Voltage Range. Very wide input voltage range: from 125 to 624V ( 208V 40% to 480 + 30% ). Bicolor Alarm LED indication. A green/red LED provides visual indication of the alarms status by means of colours of blinks. Outputs LED indication. A yellow LED provides visual indication of the output status. Relay contact output. A relay contact provides electrical (remote) indication of the alarms/output status. High Compactness. The DPA52 is a 3-Phase monitoring relay with 17,5mm width. Description DPA52 is a monitoring relay suitable 3-phase without neutral mains. It protects loads from wrong phase sequence and phase loss. It detects phase loss also with regenerated voltage presence. DPA52 doesnt require any setting nor adjustment, as soon as wired it is ready for operation. Power supply is provided by the measured mains, and it is switch mode, making it wide range and immune to mains disturbances, transients and harmonics problems. Additional protection, against dust and humidity, is provided by the PCB conformal coating. The output signal is a 5A changeover electromechanical relay. 2 front LEDs provide visual indication of output state and alarm discrimination. Alarm LED is bi- colour, colour and flashes indicate the operation status. Thanks to the low profile DIN construction it is possible to install it either in industrial cabinets as well as NORM distribution panels. Applications DPA52 is suitable for all applications where it is necessary to monitor phase presence and correct phase sequence of threephase load mains: lifts, escalators, HVAC, material handling, conveyors, pumps and compressors. 06/07/2017 DPA52 DS ENG Carlo Gavazzi Automation S.p.A. 1 DPA52 Main function 3Ph monitoring From 208V to 480V rated input Phase sequence and Phase loss Alarm 5A SPDT relay output MiniDIN 17.5 Enclosure Structure Element Component Function A Power supply terminals L1, L2 and L3 supply and measuring terminals B Output terminals Output Relay contacts terminals: COM, NO and NC LED 1 Output Led ON when relay is Energised Alarm LED LED 2 This LED is bicolour green/red, and can be blinking or fixed: Green steady ON: OK (all alarms OFF, no pending alarms) 1 red flash: Parameters Out of range alarm 2 red flashes: Phase sequence alarm 3 red flashes: Phase loss alarm 06/07/2017 DPA52 DS ENG Carlo Gavazzi Automation S.p.A. 2