The GE PQMII-T20-C-A is a high-accuracy, three-phase Power Quality and Energy Meter, a key component within GE’s Multilin™ PQMII series of advanced power monitoring devices. This intelligent electronic device (IED) is engineered to provide comprehensive measurement, monitoring, and analysis of electrical parameters in medium and low-voltage power distribution systems. It serves as the “eyes and ears” of an electrical network, continuously capturing a wide array of data including voltage, current, power (kW, kVAR, kVA), energy (kWh, kVARh), power factor, frequency, and harmonics. The GE PQMII-T20-C-A is designed for panel mounting in switchgear, motor control centers (MCCs), and distribution boards, offering facility managers, plant engineers, and utility operators unparalleled insight into power consumption, system health, and power quality events.
Beyond basic metering, the value of the GE PQMII-T20-C-A lies in its sophisticated power quality analysis capabilities. It can detect, record, and timestamp a wide range of power disturbances such as sags, swells, interruptions, transients, and harmonics up to the 63rd order. This data is critical for diagnosing root causes of equipment malfunctions, preventing downtime, and ensuring compliance with power quality standards. As part of a networked system, the GE PQMII-T20-C-A communicates this wealth of information via industry-standard protocols like Modbus RTU, enabling integration into SCADA, DCS, or building management systems. This makes it an indispensable tool for energy management, cost allocation, predictive maintenance, and improving overall electrical system reliability and efficiency.
Technical Specifications
Parameter Name
Parameter Value
Product Model
GE PQMII-T20-C-A
Manufacturer
GE (General Electric), part of the Multilin™ portfolio
Product Type
Three-Phase Power Quality & Energy Meter
Input Voltage
3-phase, 3 or 4 wire (wye or delta), multiple ranges (e.g., 57.7V to 600V L-L) via PTs
Input Current
5A or 1A secondary, via standard CTs (Current Transformers)
Measurement Accuracy
Class 0.2% for active energy (per IEC 62053-22), 0.5% for voltage/current (RMS)
Power Quality Features
Harmonics up to 63rd order, THD, TDD, sags/swells, transients, interruptions
Typically includes programmable digital I/Os for status monitoring and control
Display
Backlit LCD display for local readout of parameters
Power Supply
Typically 85-265V AC/DC, or 20-60V DC (varies by suffix)
Operating Temperature
-20°C to +70°C
Standards Compliance
IEC 62053-22, IEC 61000-4-30 (Class A / Class S), ANSI C12.20
Key Features and Advantages
GE PQMII-T20-C-A stands out due to its exceptional measurement accuracy and deep diagnostic power. Achieving Class 0.2 accuracy for active energy measurement ensures precise billing-grade data for cost allocation and sub-metering, making it a trusted device for financial accountability. Its comprehensive power quality analysis is a core strength, capable of capturing and storing detailed event logs with oscillographic data (waveform capture) for voltage and current during disturbances. This allows engineers to not only know thatan event occurred but to analyzeits characteristics, which is crucial for identifying the source of problems like nuisance tripping or sensitive equipment failures.
PQMII-T20-C-A
Connectivity and integration flexibility are central to its design. The meter comes standard with dual, isolated RS-485 Modbus RTU ports, allowing for daisy-chaining in robust multi-drop networks and seamless integration into virtually any industrial automation system. For modern Ethernet-based networks, an optional plug-in communications module can be added. Its programmable digital inputs and form-C relay outputs enable it to perform basic control functions, such as initiating a load shed based on a peak demand threshold or sending an alarm when a power quality parameter is violated. The intuitive, backlit LCD display provides immediate local access to critical readings and configuration menus, reducing dependency on a connected system for basic checks.
Robustness and long-term reliability are engineered into its construction. Designed for the demanding environment of electrical panels, the GE PQMII-T20-C-A operates reliably across a wide temperature range and is built to withstand electrical noise and transient surges typical in industrial settings. Its modular design, particularly for communication options, provides flexibility for future system upgrades. Backed by GE’s extensive global support network and the proven Multilin™ platform reputation, this meter offers a low total cost of ownership through its accuracy, reliability, and the actionable intelligence it provides for optimizing electrical system performance.
Application Areas
The GE PQMII-T20-C-A is deployed across a vast spectrum of industries wherever detailed knowledge of electrical power consumption and quality is essential for operational and financial efficiency. In industrial plants and manufacturing facilities, it is used for main incoming utility metering, feeder monitoring, and sub-metering of key production lines or large motors. This data is vital for energy management initiatives, peak demand control, and identifying inefficient equipment. Its power quality features are critical for troubleshooting process interruptions caused by voltage sags or harmonics generated by variable frequency drives (VFDs) and other non-linear loads.
In commercial buildings and data centers, the meter is used for tenant billing, monitoring critical branch circuits, and ensuring the quality of power supplied to sensitive IT and HVAC equipment. For water and wastewater treatment plants, it monitors pumps and aeration blowers, helping to manage one of the facility’s largest operating costs—electricity. In the renewable energy sector, the GE PQMII-T20-C-A can be used at the point of interconnection for solar PV or wind installations to measure energy fed back to the grid and monitor interconnection power quality. Utilities also deploy it for distribution feeder monitoring and for metering at larger commercial and industrial customer sites. Essentially, it is the instrument of choice for any application requiring accurate, reliable, and insightful electrical measurement beyond a simple kilowatt-hour count.
Related Products
GE PQMII-T20-D-A: A similar model but likely with a different input voltage/current rating, display type, or power supply option.
GE PQMII-T1-C-A: A single-phase version of the power quality meter for branch circuit or residential-style metering applications.
GE EPM 6000/7000 Series: Another family of advanced power quality meters from GE, sometimes positioned with different feature sets or communication focuses.
GE Multilin™ Ethernet Module (e.g., ETHERNET-MOD-): An optional plug-in communication module that adds Ethernet (TCP/IP) and Modbus TCP capability to the PQMII-T20-C-A.
GE MeterMate® Software or GE Power Management Expert (PME): PC-based software suites for configuring multiple PQMII meters, retrieving data, generating reports, and analyzing power quality events.
GE Current Transformers (CTs) & Potential Transformers (PTs): The external sensing devices required to connect the PQMII-T20-C-A to medium or high-voltage circuits.
GE Multilin™ Protection Relays (e.g., 850, 869): Complementary devices that focus on protection (overcurrent, differential) but often include advanced metering; the PQMII series focuses more deeply on measurement and power quality.
GE Entellisys™ EW100/EW300: Gateways or data concentrators that can aggregate data from multiple PQMII meters and other devices for easier integration into higher-level systems.
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