Where: In BMS-controlled electrical panels supplying HVAC chillers, AHUs, water pumps, elevators, and escalators, typically installed at the incoming supply section.

Why: To monitor supply voltage for overvoltage, undervoltage, or phase loss and send signals to the BMS for alarms or automated shutdowns before these conditions damage motors, compressors, or control electronics — ensuring equipment safety, energy-efficient operation, and prevention of costly downtime in building systems.

Where: In motor control panels for industrial pumps, compressors, conveyors, and fans, usually placed in the incoming supply section before contactors or VFDs.

Why: To continuously monitor supply voltage for overvoltage, undervoltage, or phase loss and trip or signal the control system before such anomalies damage motors, cause overheating, or disrupt production — ensuring motor protection, smooth process operation, and reduced maintenance downtime.

Where: In OEM-built electrical panels for industrial machinery, elevators, HVAC units, or packaging lines, typically installed at the incoming power section before control circuits.

Why: To monitor incoming voltage for overvoltage, undervoltage, or phase loss and trigger alarms or automatic shutdowns before these supply anomalies damage motors, drives, PLCs, or other sensitive electronics — ensuring machine reliability, reduced warranty claims, and extended operational life in customer applications.

Where: In commercial submetering panels and retail mall tenant distribution boards supplying power to shops, food courts, escalators, and common-area facilities.

Why: To monitor incoming supply voltage for overvoltage, undervoltage, or phase loss and trigger alarms or disconnect circuits before these conditions damage lighting systems, HVAC units, or tenant equipment — ensuring power quality, equipment longevity, and uninterrupted operation in high-traffic commercial spaces.