Control Logic P+B Motor Arc Protection Relay (MAP)

The P+B Motor Arc Protection Relay (MAP) from Control Logic is a sophisticated digital signal processor-based, phase-sensitive, short-circuit/overcurrent and series arc detecting protection relay. It has been specifically designed to be used on low- or medium-voltage, three-phase, direct-on-line motors.

The device monitors both current and voltage phase angles along with the current magnitude of the connected motor circuit.

It is designed to detect low-current, phase-sensitive, short-circuit conditions, which would normally go undetected with conventional short-circuit protection. This detection not only applies to the motor, but also to the trailing cables, junction boxes and cable connections.

It also provides proactive protection by detecting onset conditions before fault maturity has developed, which reduces the risk of equipment damage during fault withstand and also reduces the risk of fire and the potential risk to personnel.

Unlike conventional arc fault protection systems that can be expensive to install as they require optical detection sensors, the MAP instead uses current transformers.