GE PQM-T20-C-A Power Quality Meter

The PQM-T20-C-A from GE functions as a power quality meter with integrated display and control options. It provides real-time measurements of current, voltage, power, and energy consumption. This meter delivers comprehensive power analysis for industrial and commercial electrical systems. Engineers depend on its accuracy for monitoring critical distribution networks.

Technical Specifications & Hardware Details

Specification	Detail
Manufacturer	GE
Model Number	PQM-T20-C-A
Category	Power Quality Meter
Display	Integrated LCD for local monitoring
Measurements	Current, voltage, power, energy, frequency, harmonics
Communication Ports	RS-485, RS-232
Analog Outputs	4 isolated outputs, 0-20 mA or 4-20 mA configurable
Analog Input	1 channel, 4-20 mA for external sensor integration
Weight	Approximately 0.85 kg (1.87 lbs)
Dimensions (H x W x D)	5.5 in x 5.5 in x 3.0 in (140 mm x 140 mm x 76 mm)
Interface	Screw terminals for power, CTs, PTs, and I/O
Component Count	Single-unit assembly with processor, display, and isolation circuits
Energy Storage	Non-volatile memory for data logging

Measurement Capabilities and Power Analysis

The PQM-T20-C-A captures detailed power quality parameters with high accuracy. It measures voltage sags, swells, harmonics, and transients for comprehensive analysis. You can monitor real power, reactive power, apparent power, and energy consumption seamlessly. Furthermore, the meter performs demand calculations and peak value tracking. This analysis helps facilities optimize energy usage and identify power quality issues.

Analog I/O and Control Functionality

This power quality meter includes four isolated analog outputs for external monitoring systems. You can configure each output for 0-20 mA or 4-20 mA ranges as needed. The PQM-T20-C-A also provides one 4-20 mA analog input for integrating external sensors. This control option enables setpoint-based relay outputs for alarm management. Operators gain flexible integration with supervisory control and data acquisition systems.

Communication and System Integration

The meter supports both RS-485 and RS-232 communication ports for versatile connectivity. It utilizes Modbus RTU protocol for seamless data exchange with PLCs and building management systems. The PQM-T20-C-A works alongside protective relays and circuit monitors for complete power management. For similar industrial applications, static trip units and power monitors use comparable measurement principles. However, this power quality meter specifically addresses comprehensive power analysis requirements within the GE ecosystem. Facilities rely on it for accurate billing verification and predictive maintenance programs.