Description
Product Description: GE PQMII-T20-C Power Quality Meter
The GE PQMII-T20-C is a high-performance power quality meter designed for continuous monitoring and analysis of three-phase electrical systems. Engineered by General Electric (GE), this device delivers precise measurements of critical parameters such as voltage, current, real and reactive power, energy usage, power factor, and frequency. With programmable setpoints and four assignable output relays, the PQMII-T20-C enables advanced control functions, including load shedding, power factor correction, and voltage disturbance alerts. Its modular design and support for Modbus and DNP 3.0 protocols ensure seamless integration with SCADA systems, making it ideal for industrial, commercial, and utility applications.
Product Parameters
| Parameter | Specification |
|---|---|
| Voltage Rating | 20–60 V DC / 20–48 V AC |
| Frequency | 50/60 Hz |
| Power Consumption | 20 VA |
| Analog Input | 1 x 4–20 mA |
| Relay Outputs | 4 (programmable) |
| Switch Inputs | 4 |
| Analog Outputs | 4 |
| Communication | Modbus RTU/ASCII, DNP 3.0 (Version 2.10+) |
| Voltage Disturbance Recorder | 500 events (sags/swells) |
| Mounting | Panel-mount (DIN rail compatible) |
PQMII-T20-C
Advantages and Features
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Comprehensive Monitoring:
Measures 12+ power quality parameters, including voltage unbalance and demand-based energy costs. -
Advanced Control Capabilities:
Four configurable relays enable automated responses (e.g., load shedding, capacitor bank switching) based on user-defined thresholds. -
Voltage Disturbance Recorder (VDR):
Captures up to 500 voltage sag/swell events (Version 2.10+), aiding in root-cause analysis for grid stability. -
Energy Efficiency:
Low power consumption (20 VA) ensures cost-effective continuous operation. -
Flexible Connectivity:
Supports Modbus and DNP 3.0 protocols for integration with SCADA, IoT platforms, or GE Multinet converters. -
User-Friendly Interface:
Large 40-character backlit display and keypad for on-site configuration and real-time data viewing.
Application Areas and Use Cases
- Industries: Manufacturing, energy distribution, utilities, commercial buildings.
- Scenarios: Transformer monitoring, capacitor bank control, motor efficiency analysis, demand response programs.
Case Study: Industrial Campus Energy Optimization
A manufacturing campus in China deployed GE PQMII-T20-C units to monitor 10kV distribution lines. By analyzing voltage sags and load patterns, the system automated load shedding during peak hours, reducing energy costs by 18% and improving power factor from 0.82 to 0.95. The VDR feature identified recurring voltage disturbances, prompting upgrades to the campus’s UPS system and preventing production downtime.
PQMII-T20-C
Competitor Comparison
Compared to similar power quality meters, the PQMII-T20-C stands out with:
- Integrated VDR: Unique 500-event storage for voltage disturbances (versus 100–200 events in 竞品).
- Dual Protocol Support: Native DNP 3.0 and Modbus for broader system compatibility.
- Energy Cost Calculation: Built-in algorithm for real-time cost monitoring (a premium feature in many alternatives).
Selection Recommendations
- Compatibility: Ensure voltage/current ratings match your system (20–60 V DC/AC supported).
- Control Needs: Choose based on relay/input requirements (e.g., 4 relays for basic control vs. 8+ for complex automation).
- Communication: Opt for Version 2.10+ for DNP 3.0 compliance in utility-scale projects.
- Budget: Balances advanced features (VDR, dual protocols) at a 15–20% lower cost than fully modular competitors.
Precautions
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Installation: Follow NEC/NFPA guidelines for panel mounting; ensure proper grounding.
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Calibration: Schedule annual checks using GE-certified tools to maintain accuracy.
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Firmware: Update to the latest version (via USB) for VDR and protocol enhancements.
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Environment: Operate within 0–50°C and <95% humidity (non-condensing).
