GE PQMII-T20-C-A

Product Introduction

The GE PQMII-T20-C-A is a high-precision three-phase power quality meter from GE Multilin’s PQMII series, tailored for industrial and utility applications requiring advanced power monitoring, harmonic analysis, and energy management. It delivers comprehensive measurement of electrical parameters, in-depth harmonic analysis up to the 63rd harmonic, and high-speed capture of voltage sags, swells, flicker, and transient events. It is equipped with 1 isolated 4-20mA analog input, 4 isolated 4-20mA analog outputs, 4 digital inputs, and 4 programmable relay outputs, alongside multiple communication interfaces for seamless integration with SCADA, PLC, and energy management systems.
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Description

Technical Specifications

  • Manufacturer: GE Multilin (GE Vernova)
  • Product Series: PQMII Series Power Quality Meters
  • Part Number: PQMII-T20-C-A
  • Meter Type: Three-Phase Power Quality Meter
  • Measurement Parameters: Voltage (phase-to-phase, phase-to-neutral); Current (phase, neutral); Frequency (45-65 Hz); Real/reactive/apparent power; Power factor; Energy (import/export, kWh/kVARh/kVAh); Harmonics (up to 63rd, THD); Voltage sags/swells/flicker; Transient events
  • Input Voltage: Voltage inputs: 57.7/100 V, 277/480 V, 380/660 V (configurable); Control power: 20-60 VDC, 20-48 VAC (50/60 Hz)
  • Input Current: 5 A (standard); 1 A (optional)
  • Sampling Rate: 128 samples per cycle (6.4 kHz for 50 Hz, 7.68 kHz for 60 Hz)
  • Harmonic Analysis: Up to 63rd harmonic, total harmonic distortion (THD) measurement for voltage and current
  • Data Logging: Internal non-volatile memory (10,000 event records; 1 year of trend data at 15-minute intervals)
  • Analog I/O: 1 isolated 4-20 mA input; 4 isolated 4-20 mA outputs (configurable for any measured parameter)
  • Digital I/O: 4 digital inputs (dry contact); 4 SPDT relay outputs (250 VAC/30 VDC, 5 A)
  • Communication Interfaces: 2×RS-485 (rear, Modbus RTU); 1×RS-232 (front, local configuration); Optional Ethernet (Modbus TCP/IP, DNP3.0)
  • Display: 4-line LCD with backlight, push-button keypad for configuration
  • Power Consumption: 20 VA (max)
  • Operating Temperature: -25°C to +70°C (-13°F to +158°F)
  • Storage Temperature: -40°C to +85°C (-40°F to +185°F)
  • Humidity Range: 5%-95% non-condensing
  • Dimensions: 133 mm × 70.8 mm × 39.3 mm (5.24″ × 2.79″ × 1.55″)
  • Weight: 1.36 kg (3.0 lbs)
  • Certifications: UL 61010-1, CE, IEC 61010-1, IEC 61000-4-30 Class A, RoHS compliant

Functional Features

  • Comprehensive Parameter Measurement: Captures all key electrical parameters and energy consumption with revenue-grade accuracy, meeting ANSI C12.20 and IEC 61036 standards.
  • Advanced Harmonic Analysis: Analyzes up to the 63rd harmonic and THD for voltage and current, identifying harmonic-related issues in power systems.
  • High-Speed Transient Capture: 128 samples per cycle sampling rate captures voltage sags, swells, flicker, and transient events, with detailed waveform recording for root-cause analysis.
  • Flexible I/O Configuration: 1 isolated 4-20 mA input, 4 isolated 4-20 mA outputs, and 4 relay outputs can be programmed to trigger alarms or control actions based on user-defined thresholds.
  • Multi-Protocol Communication: Supports Modbus RTU, optional Modbus TCP/IP, and DNP3.0 via serial and Ethernet interfaces for seamless integration with SCADA, PLC, and energy management systems.
  • Long-Term Data Logging: Internal memory stores extensive event and trend data for compliance reporting, troubleshooting, and energy optimization.
  • Rugged Industrial Design: Operates in -25°C to +70°C temperature range, with protection against dust and moisture for reliable performance in harsh environments.
  • User-Friendly Operation: LCD display and push-button keypad allow on-site configuration; PC-based EnerVista PQMII software enables remote setup and data analysis.
  • Revenue-Grade Metering: Complies with ANSI C12.20 and IEC 61036 accuracy standards for energy billing and cost allocation applications.
  • Continuous Self-Monitoring: Built-in self-diagnostics detect internal faults, sensor errors, and communication failures, triggering relay alarms for proactive maintenance.

Application Scenarios

  • Power Utilities: Substation power quality monitoring, distribution network harmonic analysis, and voltage disturbance recording to ensure grid stability and compliance with regulatory standards.
  • Industrial Manufacturing: Monitoring of motor control centers, switchgear, and critical production lines to prevent downtime caused by power quality issues; energy sub-metering for cost allocation.
  • Data Centers: Protection of IT equipment from voltage sags/swells and harmonics; energy management for optimizing UPS and cooling system efficiency.
  • Renewable Energy Integration: Monitoring of solar/wind farm grid-connection points to assess harmonic injection and voltage stability; compliance with grid code requirements.
  • Commercial Buildings: Energy metering for HVAC, lighting, and elevators; power factor correction control to reduce utility penalties.
  • Oil & Gas Facilities: Monitoring of offshore platforms, refineries, and pipeline pump stations to ensure reliable operation of critical process equipment.
  • Mining & Metals: Power quality monitoring in crusher plants, conveyor systems, and smelters to protect large motors and drives from voltage fluctuations.
  • Healthcare Facilities: Protection of medical equipment from power disturbances; compliance with NFPA 99 standards for reliable power supply.
  • Transportation Infrastructure: Railway traction power monitoring, airport electrical system analysis, and port crane power quality assessment.

Compatibility

  • Controllers: GE PACSystems RX3i/RX7i, Siemens S7, Rockwell ControlLogix, Schneider Modicon
  • Communication Protocols: Modbus RTU, Modbus TCP/IP (optional), DNP3.0 (optional)
  • Software: GE Multilin EnerVista PQMII Setup Software (for configuration and data analysis)
  • Power Supply: 20-60 VDC or 20-48 VAC control power sources
  • Current Transformers: 5 A or 1 A secondary current transformers (standard for three-phase systems)
  • Voltage Transformers: 57.7/100 V, 277/480 V, 380/660 V voltage transformers (configurable)

Installation Notes

  1. Mounting: Install in a standard 19-inch rack or panel-mount using provided brackets; ensure 50 mm clearance for ventilation.
  2. Wiring: Connect voltage inputs to PT secondary circuits (57.7/100 V, etc.); connect current inputs to CT secondary circuits (5 A/1 A); use shielded cables for all analog and communication wiring to minimize noise.
  3. Power Connection: Connect control power (20-60 VDC or 20-48 VAC) with reverse polarity protection.
  4. Configuration: Use front-panel keypad or EnerVista PQMII software to set voltage/current ranges, harmonic limits, alarm thresholds, and communication parameters.
  5. Calibration: Factory calibrated to ANSI C12.20/IEC 61036 standards; annual recalibration recommended for revenue-grade applications.
  6. Communication Setup: Configure Modbus addresses, baud rates, and parity for RS-485/RS-232; set up Ethernet parameters (IP address, subnet mask) for optional Ethernet module.
  7. Testing: After installation, verify voltage/current readings against reference meters; test alarm relays and analog outputs with known input values.

Key Advantages

  • Comprehensive Monitoring: Measures all critical power parameters and harmonics up to the 63rd, providing a complete view of power quality.
  • High-Speed Transient Capture: 128 samples per cycle sampling rate captures fast-moving voltage and current transients for accurate root-cause analysis.
  • Enhanced I/O & Communication: Multiple analog/digital I/O and multi-protocol communication enable seamless integration with control and monitoring systems.
  • Revenue-Grade Accuracy: Complies with ANSI C12.20 and IEC 61036 standards, suitable for energy billing and cost allocation.
  • Rugged & Reliable: Operates in extreme temperatures and harsh industrial environments, with continuous self-monitoring for proactive maintenance.
  • User-Friendly: Intuitive LCD interface and PC software simplify configuration, data retrieval, and analysis.
  • Long-Term Data Logging: Stores extensive event and trend data for compliance reporting and historical analysis.
  • Cost-Effective: Reduces downtime, optimizes energy usage, and minimizes equipment damage caused by power quality issues.
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