The GE Multilin PQMII-T20-C-A, also cataloged as the PQMII Power Quality Meter, operates as a dedicated microprocessor-based hardware component for advanced electrical three-phase power monitoring, predictive analysis, and algorithmic data logging within industrial power distribution systems and substation panel environments.
Hardware Specifications
Parameter
Specification
Model
PQMII-T20-C-A
Brand
GE Multilin / General Electric
Origin
Canada
Weight
3.00 lbs (1.36 kg) nominal
Control Power Input (Low Range)
20–60 VDC or 20–48 VAC @ 50/60 Hz nominal ranges
Power Burden
20 VA maximum continuous burden
Analog Processing Inputs
One (1) 4–20 mA isolated analog input loop
Discrete Input Channels
Four (4) programmable switch / dry contact inputs
Control Contact Interfaces
Four (4) high-capacity output relays
Analog Signal Interfaces
Four (4) isolated analog outputs (mappable to alarm or control setpoints)
Serial Communication Stack
Dual (2) rear RS485 ports (Modbus RTU), One (1) front RS232 programming port
Industrial Control and Networks
Backplane Bus Communication Velocity: The power quality meter samples wave parameters simultaneously across all voltage and current channels. Serial telemetry is pushed over the dual redundant RS485 ports using the Modbus RTU protocol, ensuring deterministic integration with plant wide SCADA backbones and local PLC registers.
I/O Density Scaling: The PQMII architecture packs structural voltage/current monitoring, four digital inputs, four relay contacts, and four isolated analog outputs into a compact panel-mounted frame. This density eliminates the need for individual transducer arrays, reducing physical cabinet terminal count.
Firmware Flash Compatibility: Calibration factors, user setpoint limits, data logging intervals, and communication parameters are retained in non-volatile flash memory sectors. The device firmware version must map to the system setup software requirements to guarantee error-free configuration tracking and profile downloads.
