1)3-phase monitoring relay for phase 2)sequence and phase loss 3) Output: 5 A SPDT
Advantage
• 3-phase monitoring relay for phase sequence and phase loss• Detects when all phases are present and have the correct sequence• Measures its own power supply• Power supply range: 208 to 480 VAC (±15%)• Output: 5 A SPDT relay normally energized• For mounting on DIN-rail in accordance with DIN/EN 50 022• 17.5 mm DIN-rail housing (DIN 43880)• LED indication for relay and power supply ON
Product Description
3-Phase relay for detection of incorrect phase sequence, total and partial phase loss.Supply range from 208 to 480VAC. For mounting on DINrail. Housing 17.5 mm wide, SPDT relay output, suitable for back and front panel mounting. The device detects regenerated voltage up to 85% of the nominalvoltage (phase-phase).
Mode of Operation
DPA51 monitors its own 3-phase power supply voltage.The relay operates when all the phases are present and the phase sequence is correct.The relay releases when one phase-phase voltage drops below 85% of the other phase-phase voltages orwhen the phase sequence is wrong.Example 1The relay monitors that the power supply has the correct phase sequence and that all phases are present.Example 2The relay releases in case of interruption of one or more phases, provided that the regenerated voltage doesnot exceed 85% of the phase-phase voltage.
Monitoring protection relay,3-Phase Sequence and Phase Loss, CARLO GAVAZZI
