GE Multilin PQMII-T20-A Power Quality Meter Relay
Manufacturer: GE Fanuc
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Part Number: PQMII-T20-A
Condition：New with Original Package
Product Type: Power Quality Meters
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE Multilin PQMII-T20-A PQMII Power Quality Meter
Configured for continuous three-phase power monitoring and bay protection execution in utility control architectures, the GE Multilin PQMII-T20-A (PQMII Power Quality Meter) provides direct physical/electrical execution. The meter measures voltage inputs up to 690 VAC alongside 1 A / 5 A current transformer (CT) inputs across a 45-65 Hz frequency window. Operating on a flexible 100-240 VAC or 24-48 VDC power supply, the unit computes harmonic profiles up to the 63rd harmonic while driving four programmable output relays and processing four switch inputs to control breaker status, capacitor switching, and demand-based load shedding.
Suffix Breakdown & Model Matrix
- PQMII: Base Product Series designating Multifunction Power Quality Meter platform.
- T20: Transducer / Display option code indicating integrated backlit LCD display interface with keypad and advanced transducer functionality.
- A: Advanced feature option code specifying extended I/O capacity, waveform capture, Voltage Disturbance Recorder (VDR) functionality, and 4-20 mA analog outputs.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PQMII-T20-A |
| Brand | GE Multilin |
| Origin | USA |
| Weight | 2.3 kg |
| Dimensions | 192 mm x 192 mm x 124 mm |
| Operating Temp | -20 deg C to +60 deg C |
| Power Consumption | 100-240 VAC or 24-48 VDC auxiliary power supply |
| Voltage Input Range | 100-480 VAC nominal (up to 690 VAC max, 3-phase or single-phase) |
| Current Input Rating | 1 A / 5 A CT compatible, Rogowski coils, clamp sensors |
| Frequency Range | 45-65 Hz |
| Measurement Accuracy | Voltage: +/-0.1% of reading; Current: +/-0.5% of reading |
| Harmonic Analysis | Up to 63rd harmonic for voltage and current (IEC 61000-4-30 Class A) |
| Output Relays & Inputs | 4 programmable output relays, 4 digital switch inputs |
| Communication Protocols | Modbus RTU, Modbus TCP/IP, DNP3, IEC 61850, IEC 60870-5-104 |
| Storage & Diagnostics | Waveform capture, Voltage Disturbance Recorder (VDR), internal memory, removable SD card |
| Enclosure Rating | IP51 front panel, NEMA 1 |
| Certifications | CE, UL, CSA compliant |
Backplane Bus Communication Velocity and Firmware Flash Compatibility
The GE Multilin PQMII-T20-A maintains high backplane bus communication velocity when streaming high-speed sampling data over Ethernet and RS-485 physical channels. Built-in security layers—including role-based access control, HTTPS, and SNMPv3—protect system firmware flash compatibility during remote updates. By offloading real-time harmonic FFT calculations and transient waveform capture directly to local DSP hardware, the meter delivers deterministic network response times without degrading data throughput on Modbus TCP/IP or IEC 61850 protocol networks.
Frequently Asked Questions
Q: How does the PQMII-T20-A capture and log transient power quality events?
A: The meter utilizes high-speed sampling to record sag, swell, flicker, and inrush events via its Voltage Disturbance Recorder (VDR). Time-stamped waveforms and diagnostic records store directly to internal memory and removable SD card media.
Q: What power supply options are required to operate the module logic?
A: The internal universal power supply accepts either 100-240 VAC or 24-48 VDC auxiliary power inputs, ensuring continuous meter operation during local AC line disturbances.
Q: Can output relays on the module execute automatic load shedding or capacitor control?
A: Yes. The unit contains four programmable output relays that interface with control logic to trigger breaker trip signals, capacitor bank switching, or demand-based load shedding based on user-configured thresholds.
Field Installation Guidelines
Field installation personnel must comply with standard mounting and wiring directives:
- Prepare a cutout on the enclosure panel for IP51 front-panel flush mounting or secure the unit onto a standard DIN rail using the rear adapter bracket.
- Connect 3-phase AC voltage leads and CT secondary connections to the rear terminal blocks, ensuring correct CT polarity (H1/X1) to maintain +/-0.1% measurement accuracy.
- Wire the auxiliary power supply to the designated power terminals, providing fuse protection on ungrounded supply lines.
- Bond the metal chassis grounding terminal directly to the main cabinet earth rail using a heavy-gauge copper conductor to suppress high-frequency line transients.
- Lay serial RS-485 and Ethernet network cables in separate low-voltage wireways isolated from 480 VAC power lines to prevent electromagnetic coupling.