Heritage PQM Power Quality Monitoring Systems
Comprehensive power quality analysis that detects, classifies, and diagnoses electrical disturbances.
Overview
The Heritage PQM is a dedicated power quality monitoring platform that continuously measures and records voltage, current, harmonics, transients, sags, swells, flicker, and unbalance per IEC 61000-4-30 Class A. Featuring waveform capture at 1 MHz resolution and automated event classification per IEEE 1159, the PQM gives engineers the data they need to resolve power quality issues and protect sensitive equipment. Results are presented in NanoGrid IQ or the PQM's standalone web interface.
Key Features
- IEC 61000-4-30 Class A measurement accuracy for all power quality parameters
- 1 MHz transient capture with pre- and post-trigger waveform recording
- Automatic event classification per IEEE 1159 (sags, swells, interruptions, transients)
- Harmonic analysis up to the 128th order with individual THD trending
- EN 50160 and IEEE 519 compliance assessment reporting
- GPS time synchronization for cross-site event correlation
Technical Specifications
| Specification | Value |
|---|---|
| Voltage Inputs | 4 voltage channels, 0-690 V AC direct (up to 800 kV via PT) |
| Current Inputs | 4 current channels via CTs: 1 A / 5 A secondary or Rogowski coil |
| Measurement Class | IEC 61000-4-30 Class A, IEC 62586-2 PQI-A |
| Sampling Rate | 512 samples/cycle (continuous), 1 MHz (transient capture) |
| Harmonic Range | Up to 128th order (DC to ~7.68 kHz at 60 Hz) |
| Frequency Measurement | 42.5 Hz to 69 Hz, +/- 0.001 Hz resolution |
| Memory | 8 GB internal flash; expandable via SD card or network storage |
| Communications | Dual Ethernet, RS-485, USB, GPS antenna input |
| Display | 4.3 in color LCD with touch navigation |
| Operating Temperature | -20 C to +55 C |
Applications
Certifications & Compliance
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