PQM-T20-A Three-Phase Power Quality Monitor

Description

PQM-T20-A

The GE PQM-T20-A serves as a central intelligence hub for industrial power management, continuously capturing and analyzing key electrical parameters across three-phase power systems. This advanced monitoring device connects directly to the main electrical distribution panel or critical subpanels, measuring voltage, current, power factor, harmonics, and other essential metrics with high precision. Positioned at strategic points in the electrical infrastructure, the GE PQM-T20-A acts as an early warning system, detecting power quality issues before they escalate into equipment failures or production disruptions.

PQM-T20-A

What distinguishes this monitor is its ability to capture both steady-state conditions and transient events, providing a complete picture of power system health. It features advanced waveform capture capabilities that record voltage and current disturbances with microsecond-level resolution, enabling detailed post-event analysis. The GE PQM-T20-A communicates seamlessly with building management systems and SCADA platforms, delivering real-time data and alerts to facilitate timely decision-making. Built-in analytics tools transform raw data into actionable insights, helping engineers identify energy waste, predict equipment issues, and optimize power usage across the facility.

PQM-T20-A

Main features and advantages:

Selecting the GE PQM-T20-A delivers significant advantages to industrial power management strategies, starting with enhanced visibility into electrical system performance. Its high-accuracy measurements (Class 0.2 for active power) provide precise data for energy auditing and billing verification, helping facilities identify and eliminate wasteful energy practices. The monitor’s ability to detect harmonic distortion up to the 50th order is particularly valuable in facilities with variable frequency drives and electronic equipment, enabling engineers to mitigate issues that cause overheating and premature equipment failure.

The GE PQM-T20-A reduces unplanned downtime by providing early detection of power quality issues such as voltage sags, swells, and transients—common causes of automation system failures. Its real-time alerting capabilities ensure maintenance teams can respond quickly to emerging problems, minimizing production disruptions. By quantifying power quality problems, the monitor helps justify investments in corrective measures such as harmonic filters or voltage regulation equipment, ensuring resources are allocated to the most critical issues. Additionally, the GE PQM-T20-A simplifies compliance with industry standards and regulations by providing comprehensive documentation of power system performance and improvement measures.

PQM-T20-A

Application fields:

The GE PQM-T20-A excels in applications where reliable power and efficient energy usage are critical to operational success. In manufacturing facilities, it monitors power quality on production lines, helping identify issues that affect sensitive equipment like robotics, CNC machines, and vision systems—reducing scrap rates and improving product quality. Its robust design makes it ideal for use in data centers, where it protects servers and network equipment from power disturbances that could cause data loss or system crashes.

In healthcare facilities, the GE PQM-T20-A ensures reliable power for life-support equipment and diagnostic systems, where power quality issues can have serious consequences for patient care. The monitor also finds extensive use in renewable energy installations, where it tracks the performance of solar inverters and wind turbine connections to the grid, ensuring compliance with interconnection standards and maximizing energy harvest. In all these environments, the GE PQM-T20-A provides the detailed power quality data needed to maintain efficient, reliable operations while controlling energy costs.

PQM-T20-A

Related products:

GE PQM-T20-B – Enhanced version with power event recording and advanced analytics

GE PQM-T10-A – Single-phase power quality monitor for smaller applications

GE CT-500-5A – Current transformer set compatible with PQM-T20-A

GE PQM-GATEWAY – Communication gateway for integrating multiple PQM devices

GE ENERGY-ANALYTICS – Software platform for advanced energy analysis and reporting

GE PQM-T20-A-EX – Explosion-proof variant for hazardous environments

GE PQM-SENSOR-KIT – Calibration and verification kit for PQM series monitors

PQM-T20-A

Installation and maintenance:

Before installing the GE PQM-T20-A, verify that current transformers are properly sized for the application and correctly phased to ensure accurate measurements. Ensure the mounting location provides access to the main electrical panel while protecting the device from excessive moisture, vibration, or temperature extremes beyond its operating range. Check that communication networks can support the monitor’s data transmission requirements, with appropriate bandwidth for real-time monitoring and waveform captures.

For ongoing maintenance, perform quarterly verification of measurement accuracy using calibrated test equipment, particularly after any electrical system modifications. Review alarm logs monthly to identify recurring power quality issues that may require corrective action. Ensure firmware is updated annually to access the latest features and measurement algorithms provided by GE. Before system startups following maintenance, verify all current transformer connections and perform a manual data log check to confirm the monitor is capturing and recording data correctly.

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