Description

GE PQM-11-T20-C-A Multilin Three-Phase Power Quality Monitor & Energy Meter

Technical Specifications

• Product Model: PQM-11-T20-C-A
• Brand: GE (General Electric Multilin)
• Warranty: One Year
• Input Voltage: Auxiliary power 85–265 VAC / 90–300 VDC universal supply; measurement voltage up to 600V AC direct input
• Operating Temperature: -20°C to +60°C
• Storage Temperature: -40°C to +85°C
• Response Time: ≤100ms real-time parameter sampling and fault event capture
• Protection Class: IP52 front panel (cabinet door mounted), IP20 rear wiring terminal compartment
• Accuracy Class: ±0.2% FS for voltage/current measurement, ±0.4% FS for power and energy calculation
• Output Frequency: 45–65Hz nominal system frequency detection range
• Rated Current Range: 5A CT secondary standard current input, maximum 20A overload withstand capacity
• Communication Interface: RS485 two-wire bus, RS232 local debugging port
• Supported Protocols: Modbus RTU, DNP 3.0 industrial communication protocols
• Overload Capacity: Built-in transient voltage surge suppression, ESD protection, internal fuse overcurrent and short-circuit protection
• Dimensions: Standard 4-inch ANSI round panel cutout housing, 120mm depth behind control panel
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Product Overview

The GE PQM-11-T20-C-A is a high-precision multifunctional three-phase power quality analyzer developed under the GE Multilin product line, dedicated to continuous monitoring, metering and anomaly diagnosis of low and medium voltage industrial power distribution systems. The full part number defines its configuration: PQM11 base platform, T20 analog transducer output module, C communication expansion and A relay alarm output assembly.

This device addresses hidden power system risks that lead to equipment damage, energy waste and unplanned downtime. It performs full-spectrum electrical parameter measurement including three-phase voltage, current, active/reactive/apparent power, power factor, cumulative energy consumption and load demand statistics. The integrated harmonic analysis function calculates THD up to the 63rd order, records voltage sags, swells and transient disturbances, and stores waveform snapshots for post-fault root cause analysis. Configurable relay outputs trigger on-site alarms or interlock actions when parameters exceed preset thresholds, while the Modbus communication port transmits all historical and real-time data to PLC, SCADA, DCS and plant energy management platforms for centralized supervision.

Electrical maintenance engineers, energy management specialists, substation automation technicians and facility managers across manufacturing plants, power distribution substations, data centers, water treatment facilities and petrochemical complexes gain core operational value from this meter. It quantifies power consumption for cost allocation, locates harmonic distortion and unbalanced load issues that degrade motors and drives, simplifies electrical fault troubleshooting, and supports compliance with industrial power quality regulatory standards.

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Core Functional Advantages

1. Comprehensive three-phase electrical metering covering energy billing, load profiling and demand peak monitoring
2. Advanced power quality diagnostics: harmonic spectrum analysis, voltage event logging and oscillographic waveform capture
3. Expandable hardware: 4-channel isolated 4–20mA analog outputs and multiple programmable alarm relay contacts
4. Dual communication ports support remote network data upload and local on-device parameter configuration
5. Robust industrial enclosure withstands temperature fluctuations and electromagnetic interference in electrical rooms
6. Large internal non-volatile memory stores thousands of fault events and historical trending data without power loss