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GE PWB68A993125
GE PWB68A993125

GE PQMII-T20-C

Product Overview

The GE PQMII-T20-C is a high-precision power quality meter from the PQM II Series, engineered for continuous monitoring, analysis, and control of three-phase electrical systems in industrial, commercial, and utility applications. It delivers comprehensive measurement of voltage, current, power, energy, frequency, harmonics, and power quality events (sags, swells, transients) with industry-leading accuracy. The unit supports 20 current inputs and 4 voltage inputs for multi-circuit monitoring, integrates 4 isolated analog outputs, 4 relay outputs, and 4 switch inputs for control/alarming, and offers Modbus RTU communication via RS232/RS485. It includes advanced features such as 63rd harmonic analysis, voltage disturbance recording (VDR), event logging, and waveform capture to diagnose power quality issues and protect critical assets.
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Description

Technical Specifications

Parameter Details
Model Number PQMII-T20-C (PQM II Series)
Manufacturer GE Multilin (General Electric)
Product Type Advanced Power Quality Meter
Power Supply 70–265 VAC; 90–300 VDC; 20 VA max power consumption
Voltage Input 0–690 VAC (PT input); 50/60 Hz; ±0.2% reading accuracy
Current Input 0–5 A (CT input); 20 current channels; ±0.2% reading accuracy
Frequency Range 45–65 Hz; ±0.01 Hz accuracy
Power Measurement Active power: ±0.5% reading; reactive/apparent power: ±0.5% reading
Harmonic Analysis Up to 63rd harmonic; THD, TIF calculation; 128-point FFT
Analog Input 1 channel programmable 4–20 mA
Analog Outputs 4 isolated channels; 4–20 mA or 0–20 mA; 500 Ω max load
Digital Inputs 4 programmable switch inputs; dry contact (24 VDC)
Relay Outputs 4 relays; 250 VAC/8 A resistive; 250 VAC/2 A inductive; isolated contacts
Communication Front RS232; 2 rear RS485; Modbus RTU protocol
Data Logging Up to 98,000 data points; 500 VDR events; 150 event records
Waveform Capture 128 samples/cycle; captures transients up to 10 kHz
Operating Temperature -20°C to 60°C
Storage Temperature -40°C to 85°C
Dimensions 144 mm × 144 mm × 120 mm (H × W × D)
Mounting Standard 92 mm × 92 mm panel cutout; DIN rail adapter optional
Safety Compliance CE; UL 508C; IEC 61010-1; 600V CAT III
Weight 1.46 kg (3.22 lbs)

Function Features

  • High-Accuracy Measurement: Voltage/current at ±0.2% and power at ±0.5% reading accuracy ensure reliable revenue metering and system analysis.
  • 20-Channel Current Monitoring: Supports 20 current inputs for multi-feeder or multi-load monitoring without additional hardware.
  • 63rd Harmonic Analysis: Measures up to 63rd harmonic, THD, and TIF to identify harmonic distortion and resonance issues.
  • Voltage Disturbance Recorder (VDR): Captures up to 500 voltage sags/swells/transients with timestamp and magnitude for root-cause analysis.
  • Event & Data Logging: Stores 150 event records (over/under voltage/current, unbalance) and 98,000 data points for trend analysis and compliance reporting.
  • Waveform Capture: 128-point FFT and waveform capture at 10 kHz sample rate to visualize transients and voltage anomalies.
  • Isolated I/O for Control: 4 isolated analog outputs (for SCADA integration) and 4 relay outputs (for alarm/load shedding); 4 switch inputs for status monitoring.
  • Modbus Communication: RS232 (local) and RS485 (remote) ports with Modbus RTU for seamless integration with PLC/SCADA systems.
  • Wide-Range Power Supply: 70–265 VAC/90–300 VDC input works in global installations without power supply changes.
  • Panel-Friendly Design: Fits standard 92 mm × 92 mm cutouts; removable terminal blocks for easy wiring.

Application Scenarios

  • Industrial Power Systems: Monitor motor control centers (MCCs), switchgear, and critical loads; detect harmonics from VFDs; trigger load shedding via relay outputs to prevent overloads.
  • Commercial Buildings: Revenue sub-metering for tenant billing; power quality monitoring for HVAC, lighting, and IT loads; identify voltage sags affecting sensitive equipment.
  • Utility Distribution: Grid tie-point monitoring; detect power theft; analyze voltage/frequency fluctuations; comply with IEEE 519 harmonic standards.
  • Data Centers: Protect UPS systems, servers, and storage from transients/sags; ensure power quality for 24/7 operations; log events for downtime analysis.
  • Renewable Energy Integration: Monitor solar/wind farm grid interconnections; measure harmonics from inverters; verify compliance with grid codes.
  • Healthcare Facilities: Monitor power for life-saving equipment (MRI, ventilators); detect voltage anomalies that could disrupt operations; maintain regulatory compliance.
  • Mining & Oil/Gas: Remote site power monitoring; track generator performance; protect against voltage unbalance in harsh environments.

Compatibility and Integration

  • CT/PT Compatibility: Works with standard 5 A CTs and 0–690 V PTs; supports 1 A CTs via external converters.
  • Control System Integration: Interfaces with PLCs (Siemens, Allen-Bradley) and SCADA via Modbus RTU; analog outputs map to power parameters (kW, kVAr, V, I).
  • Software Tools: GE PQM II Configuration Software for setup, data logging, and trend analysis; supports remote diagnostics via RS485/Ethernet (optional MultiNet module).
  • Switchgear/Panels: Fits standard panel cutouts; removable terminal blocks simplify wiring; relay outputs interface with circuit breakers and contactors.
  • Third-Party Systems: Compatible with energy management software (EMS) and power quality analysis tools (e.g., Fluke, Dranetz) via Modbus data export.
  • Safety Standards: Meets UL 508C, IEC 61010-1, and 600V CAT III for safe operation in industrial environments.
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