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Phase Failure Relays
Phase Failure Relays
$69.50
*Excluding GST
Phase Failure Relays are used to protect Motors and equipment against phase loss, over voltage, under voltage and phase sequence.
More Details
A Phase Failure Relay is a phase-voltage-balance monitoring device designed for use with magnetic contactors to automatically prevent three phase motors or other equipment from operating or attempting to start up under open phase or single-phase conditions, thereby eliminating burnouts and consequent down-time frequently incurred by phase failure.
Phase Failure Relay is not a thermal device. It operates on the principle of phase voltage unbalance which may occur in a three phase systems.
Applications include:
- Motor control panels
- Pump control panels
- Air-conditioning systems
Features
- Microcontroller based.
- True RMS measurement
- Select 3phase 3wire or 3phase 4wire mode by a knob.
- N phase failure protection for 3phase 4 wire
- 1NO+1NC output-8A
- LED indication for supply and output state
- 1 module (18mm) Width
- Din-rail mounting
- Standards:
- EN60730-2-7:2011+AC:2012
- EN60947-5-1:2004_A1:2009
- EN60730-1:2012
- Used for the detection of an abnormal condition on either the line side or load side in a branch circuit.
- Used to detect a failure in three phase electrical supply that could cause damage to electric motors and motor control systems.
- Adjustable overvoltage and under voltage detection and adjustable time delay allows for the unit to be modified to suit various site specific applications.
