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- GE PQMII-T20-C-A | OEM Industrial Power Monitoring Device, Spot Inventory
Product Core Brief
- Model: GE PQMII-T20-C-A
- Brand: GE General Electric
- Series: PQMII Power Quality Meter Series
- Core Function: Real-time grid power parameter measurement and harmonic disturbance recording
- Type: Industrial Power Quality Analyzer / Panel Meter
- Key Specs: Class 0.2S energy accuracy | 3-phase 4-wire support | Modbus RTU communication
- Condition: New Original, non-refurbished
Key Technical Specifications
| Parameter Item | Technical Value |
|---|---|
| Full Model | PQMII-T20-C-A |
| Measurement Accuracy | Active energy Class 0.2S, power Class 0.5 |
| Supported Wiring | 3P3L, 3P4L, single phase |
| Voltage Input Range | 0–600 V AC phase-phase |
| Current Input | CT secondary 0–5 A standard |
| Harmonic Capture | 2nd to 63rd order harmonic analysis |
| Communication Interface | RS485 Modbus RTU, RJ45 Ethernet optional |
| Operating Temperature | -20 °C ~ +60 °C |
| Mounting Standard | 96×96 mm panel cutout |
| Data Storage | 128 MB internal log memory |
| Compliance Standard | IEC 61000-4, ANSI C12.19 |
| Power Supply | 85–264 V AC / 100–300 V DC universal power |
Product Introduction
GE PQMII-T20-C-A belongs to GE’s mature PQMII power quality meter product line, a panel-mounted industrial power monitoring device designed for low and medium voltage power distribution cabinets. It integrates electrical parameter reading, harmonic tracking, transient fault recording and power demand statistics in one compact unit.
Compared with basic digital panel meters, this model focuses on power quality fault diagnosis. It can record voltage sags, swells and flicker events, and export complete waveform logs via EnerVista software. Its 0.2S high energy accuracy meets metering-level measurement requirements for commercial power plants, avoiding revenue loss caused by inaccurate energy statistics.
GE PQMII-T20-C-A
Application Scenarios & Pain Points
Last winter, a manufacturing park’s substation faced repeated unplanned equipment shutdowns. Random motor burnout and PLC communication crashes occurred weekly, yet basic ammeters and voltmeters showed no abnormal steady-state values. The root cause was hidden high-order harmonic distortion generated by frequency converter loads, which only high-grade power quality analyzers could capture and quantify.
Typical Application Scenarios
- Manufacturing Factory Power Distribution Room
Monitor harmonic interference from servo drives and inverters; locate power quality disturbances that damage precision automation equipment.
- Commercial Building Central Substation
Meet grid operator energy audit standards, record peak power demand to cut demand-side surcharge costs.
- Solar PV & Energy Storage Combiner Cabinets
Track grid tie-in voltage fluctuation, record transient events during inverter startup and shutdown.
- Data Center UPS Power Feed Cabinets
Capture voltage sag incidents that trigger server unexpected restarts, provide traceable power fault logs for equipment failure analysis.
- Municipal Water Treatment Plant Pump Rooms
Stable long-term energy metering for multi-pump loads, support remote data upload to SCADA via Modbus.
Real Site Case
A central pharmaceutical factory’s 10 kV distribution room reported frequent tripping of 400 V branch breakers. Maintenance teams spent one week checking cable insulation and contactor terminals without finding faults.
They purchased GE PQMII-T20-C-A and installed it on the main low-voltage bus. After 72 hours of continuous logging, the meter captured severe 25th–40th order harmonics from 12 variable frequency dosing pumps. The harmonic current exceeded 30% of rated load current, causing thermal overload of breaker electronic trip units.
Engineers added passive harmonic filters according to the meter’s harmonic report. Tripping incidents dropped to zero within three days, and the factory avoided unplanned production downtime worth over $45,000 monthly.
Compatibility & Replacement Matrix
- GE PQMII-T20-C → GE PQMII-T20-C-A : Direct replacement; A suffix adds expanded transient waveform storage, same wiring and mounting
- GE PQMII-T15-C-A → GE PQMII-T20-C-A : Partial compatibility; T15 only supports up to 31st harmonic, firmware upgrade required to match data registers
- GE PQMII-T20-C-A → GE EPM7000 Series : Not compatible; different panel cutout, distinct Modbus address mapping and CT wiring terminal layout
- GE PQMII-T20-C-A → Schneider ION7650 : Cross-brand substitute; need separate CT ratio reconfiguration, Modbus polling register translation for SCADA integration
