WIP WOP4 3P 3W

The W­OP4 Phase Protection Relay is a digital electronic instrument designed for AC voltage monitoring and protection in 3 phase 4 wire and 3 phase 3 wire system. Used in application such as main failure, phase unbalance, under and over voltage. When the measured voltage moves outside the set­point limit, the relay will de­energize after the time delay, it operates automatically and shut down your motor before any damage is done. The relay will automatically reset to energize when the input voltage is raised past the set­point plus the hysteresis value, LED gives indication of actual fault that caused the trip. Display “ON” indicates when the relay is energized. The case can be mounted on a DIN rail 35 mm and adapter plate is available for wall mounting.

AC voltage protectors offer user adjustable set­point. The set­point adjustment between 10% and 20% of the nominal supply for over voltage unit and between 2% and 20% for the under and voltage unbalance. The time delay function can be used to prevent nuisance tripping due to any phase fail. The last fault can be checked by pressing “Δ” and the LED will show the fault condition. Line voltage is selected with Dip switch on top (380, 400 or 415 VAC). The trip­point is automatically calculated by the microcontroller.