Caliber 3-Phase Monitoring Relay is suitable for 3-phase without neutral mains. It has been designed and manufactured in small size with high accuracy and capable of protecting loads from wrong phase sequence, phase loss, phase unbalance and under voltage, over voltage.
DIMENSION: 87.8H x 54.2D x 17.5W
PROTECTION GRADE: IP20
Implemented microcontroller based system for tighter control of the input power.
Overvoltage and Under voltage
Phase Sequence error
PM 1: On delay Adjustment
PM 2: Over Voltage Adjustment
PM 3: Under Voltage Adjustment
PM 4: Phase Asymmetry Adjustment
Phase sequence/Phase loss/Unbalance and under voltage and over voltage conditions.
3PHMR1 is suitable for all applications where it is necessary to monitor phase presence, correct phase sequence and Under voltage, Over Voltage of three phase load mains such as lifts, escalators, HVAC, material handling, conveyors, pumps and compressors.
Caliber can support with following protection devices:
On delay: 2-180 sec
Off delay: Disconnection for Under voltage after start : 5 sec, Disconnection for Over voltage and Phase Asymmetry after start : 3 sec
Over Voltage detection: 400V - 480V
Under Voltage detection : 300V - 380V
Phase Imbalance detection: 20V - 100V
Output: 8A relay output.