Description
⚙️ Product Specifications
- Brand: GE Multilin (General Electric)
- Model: PQMII-T20 (e.g., PQMII-T20-C-A configuration)
- Series: PQM II Power Quality Meter Series
- Product Name: Digital Power Quality Meter / Multifunction Transducer (Puissance Qualité Mètre)
- Origin: USA / Canada
- Status State: Active / Refurbished
- Dimensions: Standard panel-mount enclosure (approx. 144 \times 144 \times 87 mm / 5.7″ \times 5.7″ \times 3.4″)
- Weight: Approx. 0.9 kg (2 lbs)
- Country of Origin: USA / Canada
- Power Rating: Standard Control Power Supply (typically 90–300 V DC / 70–265 V AC, or optional low-voltage DC configurations)
📖 Operation Guidelines & Usage Instructions
The GE Multilin PQM II is an advanced digital power quality meter and protection monitor designed for continuous 3-phase electrical system metering, event recording, and harmonic analysis. Ensure all upstream potential transformer (PT) and current transformer (CT) secondary circuits are safely shorted or isolated, and control power is locked out, before servicing wiring or terminal blocks. Always wear a grounded electrostatic discharge (ESD) wrist strap when handling internal components. Routine maintenance involves inspecting rear terminal screw torques, verifying communication loop integrity, and downloading event logs via EnerVista PQMII software.
⚡ Power-Up / Power-Down Sequence
- Power-Up Sequence: Verify that all 3-phase voltage inputs, CT secondary connections, control power wiring, and communication lines are correctly wired and secured to the rear terminal blocks. Apply control power to the unit. Observe the front-panel backlit LCD screen and status LEDs to verify proper self-diagnostic initialization and meter readiness.
- Power-Down Sequence: Halt any active data polling or automation scripts communicating with the meter. Switch off the dedicated control power supply feeding the unit, ensure external CT/VT circuits are isolated or shorted according to standard safety practices, and disconnect power terminals if removal is necessary.
❓ Frequently Asked Questions (Q&A)
- Q: What parameters does the GE PQM II track?
A: It measures true RMS voltage, current, real/reactive/apparent power, energy use, power factor, frequency, unbalance, and harmonic distortion (up to the 63rd harmonic).
- Q: What communication options are supported?
A: It typically features standard RS-485 and RS-232 ports supporting protocols like Modbus RTU for seamless integration into SCADA and energy management systems.
🚀 Recommended GE / Multilin Models
- PQMII-T20-C-A
- Multilin EPM 6000
- Multilin EPM 9450
- UR6BH
- F60 Feeder Protection System
- T60 Transformer Protection System
- M60 Motor Protection System
- C60 Breaker Management Relay
- EnerVista UR Series Hub
- IC693CPU374
