Product Details
The GE PQM-II, also cataloged as the PQM-II Power Quality Meter, operates as a dedicated hardware component for power monitoring, current/voltage waveform analysis, and system metering within electrical distribution automation systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PQM-II |
| Brand | GE / GE Multilin |
| Origin | USA |
| Weight | 3.56 lbs |
| Operating Temp | -20 to +60 deg C |
| Power Consumption | 90-300 VDC / 70-265 VAC (50/60 Hz) |
| Display Type | 40 Character Alphanumeric Display |
| Mounting Type | Panel Mountable Enclosure |
| Metering Inputs | 3-Phase Voltage and Current Measurement |
| Communication Protocols | Serial RS485 Modbus RTU |
Backplane Bus Communication Velocity and Firmware Flash Compatibility
The PQM-II integrates internal microprocessor control to process high-speed line sampling, phase angles, and total harmonic distortion metrics. Communication interfaces route data across serial networks to feed master control automation systems without degrading processing throughput. Onboard microcode maintains strict firmware flash compatibility across network nodes, ensuring stable register polling and preventing packet queueing latencies during transient power disturbance logging.
Frequently Asked Questions
Q: What power supply range does the PQM-II support for control power?
A: The internal universal power supply operates from 90-300 VDC or 70-265 VAC at 50/60 Hz.
Q: Can the PQM-II be replaced or serviced while the primary current loops are energized?
A: No. Secondary CT (current transformer) leads must be shorted using standard shorting blocks before disconnecting terminal wiring from the back of the unit to prevent lethal high-voltage open-circuit conditions.
Q: How are power quality metrics displayed locally on the meter unit?
A: Local real-time data, fault indications, and system parameters are displayed on the front-panel 40-character alphanumeric display.
Field Installation Guidelines
- Cut the designated mounting opening in the switchgear panel door and insert the PQM-II enclosure from the front.
- Secure the mounting brackets to the sides of the meter casing and torque the retaining screws evenly against the panel door frame.
- Establish a low-impedance connection from the chassis earth ground terminal to the panel ground bus bar using a short 12 AWG copper wire lead.
- Route 90-300 VDC / 70-265 VAC control power wiring to the power terminals through a dedicated external circuit breaker or fuse block.
- Terminate CT secondary lines to the current measurement terminals, verifying phase sequence (A, B, C) and current transformer polarity markings before powering up.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Multi-Touch HMI Technology: Transforming Interaction in Industrial Automation
Modern human-machine interfaces (HMIs) are evolving rapidly across factory floors worldwide. Traditional resistive touchscreens allowed operators to register only a single touch point at a time. Today, multi-touch HMI panels enable intuitive multi-finger gestures and concurrent multi-operator inputs in demanding industrial automation setups.
Centralized vs Decentralized Automation Systems: Architectural Trade-Offs in Modern Industrial Control
Industrial automation relies heavily on robust control architectures to manage complex processes efficiently. Engineers must choose between centralized and decentralized topologies when designing plant automation. This decision directly impacts system reliability, scalability, and long-term maintenance costs.
Engineering a Process Control System Philosophy: Principles and Operational Impact
A Process Control System (PCS) Philosophy serves as the foundational blueprint for modern plant engineering. During the design and construction phases, this document establishes clear guidelines for instrumentation and control (I&C) teams. Consequently, a well-defined philosophy directly dictates overall operational stability, maintenance efficiency, and future expansion capabilities across heavy process industries.