The M1PRC/S-4W from Broyce Control is a discontinued but once widely used three-phase voltage monitoring relay.
The M1PRC/S-4W from Broyce Control is a discontinued but once widely used three-phase voltage monitoring relay. It was designed to protect equipment by monitoring critical aspects of a 3-phase, 4-wire supply. Here's what it offered:
Key Features
Monitoring Functions:
Under-voltage and over-voltage (window type)
Phase sequence detection
Phase loss and neutral loss
Supply Voltage:
Operates on its own 230V AC 3-phase, 4-wire supply
Trip Levels:
Adjustable thresholds for both under and over-voltage
Time Delay:
Adjustable from 0.2 to 10 seconds to prevent false tripping
