The GE Multilin PQM II is an ultra-compact, high-performance power quality meter designed for the comprehensive monitoring of three-phase power systems. It provides high-accuracy metering of current, voltage, real and reactive power, energy use, cost of power, and power quality parameters. It is a vital tool for industrial, commercial, and utility applications where energy management and the detection of power disturbances are critical for operational efficiency and equipment protection.
Product Specifications
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Model Series: PQM II (Power Quality Meter)
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Metering Accuracy: 0.2% for Voltage and Current; 0.4% for Power and Energy
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Voltage Inputs: Direct up to 600V AC; supports PTs (Potential Transformers) for higher voltages
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Current Inputs: Supports 1A or 5A secondary CTs (Current Transformers)
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Dimensions: 187 mm x 150 mm x 175 mm (Standard 4-inch round or square cutout)
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Weight: 2.10 kg
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Display: 40-character backlit LCD with programmable scroll rates
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Communication: RS485 Modbus RTU (Standard); optional RS232 or Ethernet (via external bridge)
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Operating Temperature: -20°C to +70°C
Application Fields
The PQM II is extensively used in Industrial Facilities, Data Centers, and Power Distribution Substations. It is ideal for identifying power quality issues such as harmonic distortion, voltage sags, and swells that can damage sensitive electronics. Additionally, it is used for “sub-metering” within large plants to track departmental energy costs and for load shedding applications where the meter can trigger a relay based on peak demand thresholds.
Product Instructions
The PQM II should be mounted in a standard square or round cutout on a switchgear or control panel door. Wiring should be performed with the system de-energized; ensure that CT shorting blocks are used when the meter is being serviced to prevent high-voltage transients. Configuration is performed through the front-panel tactile buttons or via the EnerVista PQM II Setup Software. For precise power quality analysis, ensure the “System Type” (e.g., 3-element wye, 2-element delta) is correctly set in the software to match your physical wiring.
FAQ: Common Questions and Answers
Q: Can the PQM II detect harmonics? A: Yes, the PQM II provides Total Harmonic Distortion (THD) analysis for both voltage and current up to the 31st harmonic, helping you identify the presence of non-linear loads.
Q: Does it have integrated memory for data logging? A: Yes, it features non-volatile memory that stores data logs, event records, and minimum/maximum values even during a complete power failure.
Q: Can I use this meter for billing purposes? A: While highly accurate (0.2% – 0.4%), the PQM II is typically used for “revenue-grade” internal sub-metering and energy management. For utility-level billing, check local regulations regarding specific sealable meter requirements.
Access the latest technical manuals and availability for the GE Multilin PQM II to enhance your facility’s energy intelligence.
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