Phase Sequence / Phase Loss Sensor
Protects three-phase equipment from reverse rotation, missing phase, and unsafe power supply.
What Does a Phase Sequence / Phase Loss Sensor Measure?
A phase sequence and phase loss sensor monitors the presence, order, and continuity of three-phase electrical supply. It ensures that all three phases are available and connected in the correct sequence required for safe operation of motors, pumps, compressors, and drives.
Signal Output
- Digital relay output (healthy / fault)
- Digital communication (RS485 / Modbus)
- Status signals: Phase OK, Phase Loss, Phase Reversal
- Alarm and trip contacts for control panels
What Does the Signal Mean?
| Phase Condition | Industrial Meaning |
|---|---|
| Correct phase sequence | Safe operation and correct motor rotation |
| Phase reversal | Reverse rotation causing mechanical damage |
| Single phase / phase loss | Severe overheating, winding failure risk |
| Intermittent phase loss | Loose connections or supply instability |
Sensor Cluster
This sensor belongs to the Electrical Health Cluster
Industrial Applications
- Motor protection systems
- Pump and compressor safety
- Control panel interlocking
- VFD and starter panel protection
- Critical rotating equipment safeguarding
Industries Using Phase Sequence / Phase Loss Sensors
Operating Conditions
- High electrical noise environments
- Voltage fluctuations and unstable grids
- Continuous operation in control panels
- High temperature industrial enclosures