PQMII-C-A GE Power Metering and Disturbance Recorder
Manufacturer: GE Fanuc
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Part Number: PQMII-C-A
Condition：New with Original Package
Product Type: Power Quality Meter
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The PQMII-C-A is an authoritative Power Quality Meter from the GE Multilin PQMII series, engineered for high-precision monitoring of three-phase power systems. This module is a mechanical necessity for facility managers and utility engineers requiring deterministic data on energy consumption, power quality, and system disturbances. Beyond basic metering, the PQMII-C-A features integrated control functions through 4 assignable output relays and advanced voltage disturbance recording (VDR). It acts as a protective and diagnostic firewall for distribution feeders, motors, and capacitor banks, providing the granular data needed to identify sags, swells, and harmonics in commercial, industrial, and utility environments.
Detailed Technical Specifications
| Attribute | Details |
| Manufacturer | GE Multilin / General Electric |
| Model Number | PQMII-C-A |
| Series | PQMII Power Quality Meter |
| Product Type | Power Quality Meter and Control Relay |
| Control Power | 90–300 VDC or 70–265 VAC (Nominal) |
| Output Relays | 4 Programmable/Assignable Relays (Form-C) |
| Metering Parameters | V, A, Hz, kW, kvar, kVA, PF, kWh, kvarh, kVAh |
| VDR Capacity | 500 Sag/Swell event records |
| Communication | DNP 3.0, Modbus RTU, Optional Ethernet (via MultiNet) |
| Serial Ports | 1x RS232 (Front), 2x RS485 (Rear) |
| THD Monitoring | Total Harmonic Distortion for Voltage and Current |
| Operating Temp | -20 °C to +70 °C |
| Dimensions | 4-inch Standard Square Cutout / Rack Mountable |
Engineering and Operational Guidelines
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Voltage Quality Expertise: The PQMII-C-A features a sophisticated Voltage Disturbance Recorder (VDR). This expertise allows the device to capture up to 500 sag and swell events, which is critical for identifying utility-side transients or localized motor-starting impacts that can degrade sensitive electronic loads.
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Deterministic Control Logic: A trustworthy feature of this model is the 4 assignable output relays. These can be programmed for specific control logic, such as automatic load shedding based on demand setpoints or capacitor bank switching to maintain an optimal power factor.
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Authoritative Diagnostics: The unit performs a continuous self-test of internal hardware and memory. Through the front-panel RS232 port or rear RS485 bus, engineers can extract oscillography and event logs using EnerVista software, providing the authoritative data required for post-fault analysis.
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Substation Communication Architecture: Supporting DNP 3.0 as a standard feature, the PQMII-C-A integrates seamlessly into modern SCADA and DCS environments. Its dual rear ports allow for daisy-chaining multiple meters back to a central gateway, reducing field wiring complexity.
Technical FAQ
Q: What is the primary difference between the standard PQMII and the PQMII-C-A?
A: The PQMII-C-A includes the "C" control option, which provides the 4 assignable relays and programmable setpoints. The "A" designation typically refers to the specific hardware revision or communication assembly provided in this grouping.
Q: How does the VDR handle 500 events?
A: The PQMII-C-A utilizes non-volatile memory to store timestamped sag/swell data. Even in the event of a control power loss, the authoritative event log is preserved for later analysis via EnerVista or the SCADA master.
Q: Can this meter be used for billing purposes?
A: While the PQMII-C-A provides high-accuracy metering (typically Class 0.2 or 0.5 depending on the parameter), its primary function is power quality and industrial monitoring. For revenue-grade utility billing, it is a professional best practice to verify local regulatory requirements.