GE Multilin MPM-HI-A20 Motor Protection Meter

The GE Multilin MPM-HI-A20 is a panel-mounted motor protection meter engineered for real-time monitoring and signal conditioning within industrial motor management systems. Designed to interface with motor protection relays (such as the Multilin 269/269+ and 369 series), this unit converts three-phase motor electrical parameters into isolated analog output signals for supervisory control, data acquisition, and panel metering.

Signal Processing and Analog Output Capabilities

The MPM-HI-A20 monitors phase voltage and current inputs to compute real-time motor operating metrics. Equipped with four isolated 4-20 mA analog output channels, the unit provides scalable current loop signals corresponding to measured parameters such as phase voltages, currents, or power levels. These outputs integrate directly with external PLCs, SCADA systems, or recording instruments to maintain continuous visibility over motor load conditions.

Power Supply and Field Terminal Interface

Configured with the high-voltage power supply option (HI), the unit operates reliably across an extended auxiliary control power range of 250 V AC at 50/60 Hz, consuming a maximum power of 20 VA. Industrial screw clamp terminals secure field wiring for voltage inputs, auxiliary power supply, and analog output loops, ensuring stable electrical contact under continuous industrial vibration.

Technical Specifications

Frequently Asked Questions

Q: What is the primary function of the GE Multilin MPM-HI-A20 meter? A: The MPM-HI-A20 acts as a motor protection meter and signal transducer, measuring motor electrical parameters and providing four isolated 4-20 mA analog outputs to PLCs or remote monitoring instruments.

Q: What control power voltage does the "HI" designation represent on the MPM-HI-A20? A: The "HI" suffix indicates a high-voltage auxiliary power supply rating capable of operating on AC control power up to 250 V AC at 50/60 Hz.

Q: How are external field wires connected to the MPM-HI-A20 module? A: Field connections for voltage inputs, auxiliary power, and 4-20 mA output loops are wired directly to the unit's screw clamp terminals.