M Family Digital Machine Protection Relay Three-phase protection for electrical machines. Thermal image protection Configurable logic, curves, digital I/Os and LEDs Flash memory for field upgrades Analog/digital oscillography Drawout case for easy maintenance AC/DC power supply Restricted ground fault Access via front panel keypad or communication links User Interfaces Compatible with M Family systems in half or full 19" racks M+PC software for setting and monitoring Front RS232 and rear RS485 ports using ModBus® RTU protocol up to 19,200 bps Protection and control for generators, motors, and transformers enerVista.com compatible (see page 275)

MIG M Family Digital Machine Protection Relay Protection The MIG Digital Machine Protection Relay is designed specifically for small generators and motors. As part of the M Family, the MIG provides superior protection which includes: Thermal Image Unit The thermal image algorithm protects the machine from negative sequence components that can cause overheating in the stator and rotor, as well as overload. an additional ground sensor. Alternatively, for more sensitive detection, an additional core balance (zero sequence) ground sensor encircling the three-phase conductors can be used. Starts/Hour...

MIG M Family Digital Machine Protection Relay Typical Wiring Note: Only for reference. For particular connections for any MIG model, please refer to its external connections drawing. ZERO SEQUENCE GROUND SENSING CONNECTION Locked Rotor The MIG provides protection during extra-long start-ups where excessive overcurrent conditions can damage rotors. This protection is critical for power applications where the motor drives the generator into service. 20 A MAX CIRCUIT BREAKER LOCATED BEFORE POWER INPUT ZERO SEQUENCE GROUND CT CAUTION: Fork or ring terminals must be used on the termainal block. NOTE:...