Fixed Three Phase Power Quality Analyzer
The VT-PM705 is a fixed three-phase power quality analyzer designed for continuous diagnostics and energy monitoring in industrial and commercial power systems.
It measures voltage, current, power, energy, harmonics, sags, swells, and phase angle in real time — helping engineers detect inefficiencies, prevent downtime, and ensure electrical compliance.
Whether it’s for plant maintenance, solar PV systems, EV charging stations, or UPS and power equipment, the VT-PM705 delivers high-accuracy measurements, powerful data logging, and seamless MODBUS TCP/RTU communication.
Key Features
- Supports 3PH4W, 3PH3W, 1PH3W, and 1PH2W configurations
- Measures voltage, current, harmonics, power, energy, and power factor in real time
- Waveform capture and event recording for sags, swells, interruptions, and frequency variations
- Harmonic analysis up to the 50th order with individual and total THD
- Built-in 32 GB memory with data export in .CSV format via USB or LAN
- Ethernet (MODBUS-TCP) and RS485 (MODBUS-RTU) communication
- Two relay outputs and digital input channels for control and alarms
- 3.5″ IPS color display with waveform and phasor diagram visualization
- Compact 96×96 mm panel-mount design for switchboards and control panels
- CAT III 600 V rated for distribution systems
Why Power Quality Monitoring Matters
Applications
Power quality issues like harmonics, voltage imbalance, and transients silently reduce equipment life and efficiency.
By continuously recording and analyzing these parameters, the VT-PM705 helps:
– Identify root causes of motor overheating and transformer stress
– Detect nonlinear loads affecting PF and harmonics
– Enable predictive maintenance through trend and event data
– Improve energy efficiency and system reliability
- Industrial plant maintenance and facility audits
- Solar PV power monitoring
- UPS and power supply equipment
- Electrical panel diagnostics
- EV charging infrastructure
- Energy management systems
Technical Highlights
| Parameter | Specification |
|---|---|
| Voltage | 0–600 V AC (±0.2%) |
| Current Input | 0–420 mV AC (±0.2% + sensor accuracy) [10A – 6000A Flexible Rogowski Coil Current Sensors available] |
| Power Measurement | Active Power, Reactive Power, Apparent Power, Power Factor |
| Energy Measurement | Active Energy, Reactive Energy, Apparent Energy |
| Harmonic Measurement | Voltage & Current up to 50th order, Total and individual harmonic distortion (%) |
| Phase Angle | Phase ABC Voltage, Phase ABC Current, Phase ABC Angle Between Voltage and Current |
| Waveforms | Phase ABC Current, Phase ABC/Line Voltage |
| Event Recording | Voltage Swell/Dip/Interruptions, Frequency Events, Unbalance Events, Harmonic Events, Waveforms |
| Control Ports | Two digital inputs, Two relay outputs |
| Communication Ports | Ethernet RJ45, RS485, USB |