Description
1. Product Title
GE Multilin PQMII-T20-C-A – Power Quality Meter
2. Product Overview
The GE Multilin PQMII-T20-C-A is an advanced microprocessor-based digital power meter designed for monitoring three-phase power systems. It provides comprehensive metering of current, voltage, power, and energy, alongside sophisticated power quality analysis tools.
In industrial and utility environments, unstable power quality can lead to equipment overheating, electronic failure, and increased energy costs. The PQMII-T20-C-A solves these issues by acting as a “diagnostic window” into the electrical system. It detects harmonics, voltage sags, and swells, allowing facility managers to identify the source of disturbances. With its integrated alarm and control functions, it can automatically trigger protective measures or notify operators before a power quality issue leads to a plant-wide shutdown.
3. Technical Specifications
- Brand: GE Multilin
- Model: PQMII-T20-C-A
- Warranty: One Year
- Condition: 100% New & Original
- Power Supply: 90–300 V DC or 70–265 V AC @ 50/60 Hz
- Order Code Breakdown:
- T20: Standard features plus Transducer outputs (4-20mA)
- C: Control (provides 3 programmable output relays and 4 digital inputs)
- A: Enhanced Analysis (includes Harmonics and Waveform Capture)
- Accuracy: 0.2% for Voltage and Current; 0.4% for Power/Energy
- Communication: RS485 Modbus RTU (supports up to 19.2 kbps)
- Operating Temp: -20°C to +60°C (-4°F to 140°F)
4. Key Features & Benefits
- Enhanced Power Quality Analysis: The “A” (Analysis) option provides Total Harmonic Distortion (THD) monitoring up to the 32nd harmonic and waveform capture, which is essential for troubleshooting sensitive electronic loads.
- Flexible Control Logic: The “C” (Control) option allows the meter to perform autonomous actions, such as load shedding or power factor correction, based on user-defined setpoints.
- Analog Transducer Outputs: The module converts electrical parameters into 4-20mA signals, allowing easy integration with legacy PLC systems or standalone chart recorders.
- High-Visibility Display: Features a vacuum fluorescent display that is easily readable in dark electrical cabinets, providing local access to all metered values and alarm logs.
- Data Logging: Internal memory records historical trends and event logs, ensuring that intermittent power faults are documented for future engineering review.
5. Application Scenarios
- Data Centers: Monitoring incoming utility power and internal distribution to ensure high-grade electricity for sensitive server hardware.
- Manufacturing Plants: Detecting harmonic distortion created by Variable Frequency Drives (VFDs) that can cause motor overheating and transformer vibration.
- Commercial Buildings: Sub-metering energy usage for different tenants or departments while monitoring for voltage imbalances that can affect HVAC systems.
6. Frequently Asked Questions (FAQ)
- Q: What is the difference between the PQMII and the PQM?
- A: The PQMII is the second-generation model, offering significantly improved processing speed, higher accuracy, and expanded memory for data logging and waveform capture.
- Q: Does this meter require Current Transformers (CTs)?
- A: Yes, the PQMII-T20-C-A typically requires external 5A or 1A secondary CTs to measure high-current primary lines.
- Q: Can I access the data remotely?
- A: Yes, via the RS485 port using Modbus RTU protocol, the meter can be integrated into SCADA systems, Building Management Systems (BMS), or GE’s EnerVista™ software.
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