Description
The
PQMII-T20 is a compact power quality monitor for three-phase systems, measuring voltage, current, harmonics, and events (sags/swells). It supports Modbus/DNP 3.0, 4 programmable relays, and 500 event logs. Ideal for industrial/commercial power management.
| Parameter |
Specification |
| Voltage Range |
20–60V DC / 20–48V AC |
| Current Measurement |
Conventional transformers or sensors |
| Event Logs |
500 voltage sags/swells |
| Relays |
4 programmable (26 max with expansion) |
| Communication |
Modbus RTU/TCP, DNP 3.0 |

PQMII-T20
- VDR Integration: Stores 500 events (vs. 100–200 in 竞品).
- Dual Protocol Support: Modbus/DNP 3.0 for utility and industrial use.
- Compact Design: Space-saving form factor (no mounting base required).
- Industries: Data centers, manufacturing, renewable energy.
- Use Case: A manufacturing 园区 reduced energy costs by 18% using PQMII-T20 to optimize power factor (0.95) and identify harmonic issues.
vs. similar monitors:
- More Event Logs: 500 events (vs. 100–200 in 竞品).
- Dual Protocol: Modbus + DNP 3.0 (vs. single-protocol in 竞品).

PQMII-T20
- Voltage Class: Match system voltage (DC/AC).
- Relay Needs: Select models with 4–26 relays based on control requirements.
- Installation: Mount in a dry, ventilated area.
- Calibration: Regularly verify sensor accuracy (annual recommended).