DPB52 True RMS 3-Phase, Multifunction monitoring relay Benefits Measuring Voltage Range. Very wide input voltage range: from 125 to 624V ( 208V 40% to 480 + 30% ). Adjustable Voltage Ranges and over / under. 7 Voltage ranges can be selected by means of a front dial. Over and under voltages are adjustable from + or - 2 to 22% of the selected range. Bicolour Alarm LED indication. A green/red LED provides visual indication of the alarms status by means of colours of blinks. Output LED indication. A yellow LED provides visual indication of the output status. Relay contact output. TA 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 DPB52 is a monitoring relay suitable 3-phase without neutral mains. Further to protect loads from wrong phase sequence and phase loss, it also provides the undervoltage and overvoltage features with adjustable delay ON. The phase loss is detected also with regenerated voltage presence. DPB52 the device supply is provided by the measured mains. Being switch mode, the power supply, besides immune to disturbances, transients and harmonics problems, is also wide range input. Further protection, against humidity and dust, is provided by the conformal coating of the internal circuitry. The output signal is provided by a 5A changeover electromechanical relay. 2 front LEDs provide visual indication of output state and alarm discrimination. Alarm LED is bi- colour, its colour and flashes indicate the operation status. Due to the low profile DIN construction it is possible to install it either in industrial cabinets as well as the electrical distribution NORM panels. Applications DPB52 is suitable for all applications where it is necessary to monitor besides the phase presence and correct phase sequence of threephase load mains, also the correct value: lifts, escalators, HVAC, material handling, pumps and compressors, machines for export markets. 06/07/2017 DPB52 DS ENG Carlo Gavazzi Automation S.p.A. 1 DPB52 Main function 3Ph monitoring From 208V to 480V rated input Adjustable Over / Under Voltage and Delay ON Phase sequence and Phase loss Alarm 5A SPDT relay output MiniDIN 17.5 housing Structure Element Component Function A Input/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 LED lit when Output is Energised Alarm LED LED 2 Bicolour green/red LED, blinking or fixed: Steady ON green: OK (no alarms) Green Flashing: UNDER or OVER triggered, Delay ON is elapsing 1 red flash: out of range parameters alarm 2 red flashes: Wrong phase sequence alarm 3 red flashes: Phase loss Alarm 4 red flashes: Under voltage after Delay ON elapsed 5 red flashes: Over voltage after Delay ON elapsed Dials C Settings for Over Voltage, Under Voltage, Delay ON, Rated Line Voltage 06/07/2017 DPB52 DS ENG Carlo Gavazzi Automation S.p.A. 2