Description

The GE PQMII-T20 is a premium three-phase power quality meter engineered for mission-critical energy monitoring in industrial, utility, and commercial facilities. As part of GE’s Multilin™ PQMII series, this device delivers comprehensive electrical parameter measurement with Class 0.2 accuracy (IEC 62053-22), capturing voltage, current, power, energy, and harmonics up to the 63rd order. The PQMII-T20 features advanced disturbance detection capabilities – including voltage sags/swells, transients, and flicker – with 512-cycle waveform capture at 256 samples/cycle. Its ruggedized design withstands harsh electrical environments with 4kV surge immunity and operates at -40°C to +70°C, making it ideal for substations, manufacturing plants, and renewable energy installations.

Integrated dual Ethernet ports support simultaneous Modbus TCP, DNP3, and IEC 61850 protocols, enabling seamless integration with SCADA systems and power management software. The GE PQMII-T20‘s 5.7″ color LCD provides real-time visualization of phasor diagrams, harmonic spectra, and event logs, while onboard storage retains 128,000 events with 1-second resolution. For facilities requiring uncompromising power quality compliance (IEEE 519, EN 50160), this meter delivers forensic-grade data analytics to optimize energy costs and prevent equipment damage.

GE PQMII-T20

Technical Specifications

Main Features and Advantages

Advanced Power Quality Analysis: Captures 128 parameters including unbalance, flicker (Pst), and interharmonics with IEC 61000-4-30 Class A compliance. The PQMII-T20‘s transient detection (<1>

Cybersecurity & Integration: Hardware-enforced role-based access control and encrypted communications meet IEC 62351 standards. Dual independent Ethernet ports allow separate control/enterprise networks. GE’s Proficy™ Power Monitoring software leverages its 128k-event memory for trend analysis.

Operational Intelligence: Real-time phasor diagrams validate phase rotation during commissioning. Customizable alarm thresholds trigger automated reports via email/FTP. The PQMII-T20‘s waveform replay function diagnoses tripping causes in motor control centers.

Harsh Environment Resilience: Operates at 100% rated current (65°C) without derating. 150 kV/m RF immunity prevents false triggering in switchyards. Conformal coating protects against corrosive atmospheres.

Application Field

The GE PQMII-T20 is critical for:

Manufacturing: Detecting voltage dips causing robotic line stoppages in automotive plants

Data Centers: Monitoring PUE and harmonic distortion in UPS-fed critical loads

Renewables: Validating grid compliance (IEEE 1547) for solar/wind farms

Healthcare: Ensuring clean power for MRI/CT scanners in hospitals

Mining: Tracking energy consumption per crusher/conveyor

Utilities deploy it for feeder monitoring to pinpoint fault locations, while steel mills leverage its 63rd harmonic measurement to prevent transformer overheating from arc furnaces.

Related Products

PQMII-T1-N: Base model with 7th harmonic capability

PQMII-T30: Enhanced model with 3G/4G cellular option

GE EPM 9900: Enterprise power management software

GE B30: Communications gateway for legacy systems

GE F650: Digital relay with power quality metering

GE 369-HI-0-0-0: Motor management relay integration

GE PQMII-T20

Installation and Maintenance

Pre-installation preparation: Verify CT/VT ratios and burden compatibility. Use shielded twisted pairs for analog inputs with single-point grounding. Configure communication protocols and IP addresses before energizing.

Maintenance recommendations: Perform annual accuracy verification with certified calibrator. Update firmware during planned outages. Clean LCD annually with IPA wipes. Replace backup battery every 5 years for clock retention.