PQMII-C | General Electric | PQMII Series Power Quality Meter

Product Description

The General Electric PQMII-C is a high-precision Power Quality Meter within the Multilin product family, engineered for comprehensive monitoring of utility and industrial power systems. This unit provides advanced detection of voltage and frequency anomalies, ensuring the stability of sensitive electrical infrastructure. By utilizing programmable setpoints and high-speed data acquisition, the PQMII-C serves as a critical diagnostic tool for energy management and equipment protection.

Voltage Monitoring Parameters

The PQMII-C offers sophisticated tracking for both over and under-voltage conditions to prevent hardware fatigue and operational failures.

• Undervoltage Pickup: 0.50 to 0.99 x VT (0.01 steps)

• Undervoltage Dropout: 103% of pickup level

• Overvoltage Pickup: 1.01 to 1.25 x VT (0.01 steps)

• Overvoltage Dropout: 97% of pickup level

• Phase Configuration: User-programmable for any single phase, any two, or all three phases

• Time Delay Range: 0.5 to 600.0 seconds

• Timing Accuracy: -0/+1 second

Frequency Surveillance and Control

For grid stability and generator synchronization, the PQMII-C monitors frequency deviations with high granularity.

• Frequency Range: 20.00 to 70.00 Hz

• Pickup Accuracy: ±0.02 Hz

• Underfrequency Dropout: Pickup + 0.03 Hz

• Overfrequency Dropout: Pickup - 0.03 Hz

• Response Time: 0.1 to 10.0 seconds

• Operational Requirement: Minimum 20V applied for accurate sensing

Energy Pulse Output and Physical Specs

The meter facilitates external integration through programmable pulse outputs for energy consumption tracking.

• Monitored Parameters: Positive/Negative kWh, Positive/Negative kvarh, and kVAh

• Pulse Width: 100 to 2000 ms (10 ms increments)

• Minimum Interval: 500 ms

• Dimensions: 215 mm x 152 mm x 152 mm (8.5" x 6" x 6")

• Shipping Weight: 2.3 kg (5 lbs)

Applications and Integration

The PQMII-C is typically deployed in main incoming feeders, motor control centers (MCC), and distributed generation sites. It allows engineers to capture power quality events and automate load shedding or capacitor bank switching based on real-time voltage and frequency data.

FAQ

Can the PQMII-C monitor specific phases for voltage drops?

Yes, the unit is fully programmable, allowing the operator to trigger alarms or actions based on a single phase, two phases, or a balanced three-phase monitoring logic.

What is the minimum voltage required for frequency monitoring?

The meter requires at least 20V applied to the inputs to maintain accurate frequency tracking and pickup performance.