THREE PHASE Pump Protection Relay without Level Sensors - PF47-R -Aux.S. 3 x 400 V

Fanox offers robust protection solutions for three-phase pumps that ensure efficient and safe operation without the need for external level sensors. These protection panels are designed to safeguard three-phase submersible pumps and other critical pump systems by using advanced monitoring techniques. Here are the key features and benefits of Fanox three-phase pump protection panels:

Key Features:

1. Underload Protection by Cos φ (Power Factor):

   • Dry Running, Cavitation, and Closed Valve Prevention: Monitors the power factor (cos φ) of the motor to detect underload conditions, preventing issues such as dry running, cavitation, and closed valve scenarios by automatically stopping the pump.

2. Overload Protection:

   • Overcurrent Monitoring: Protects the pump motor from damage due to excessive current draw, ensuring safe operation under various load conditions.

3. Phase Imbalance or Phase Loss Protection:

   • Balanced Operation: Detects phase imbalances or phase losses, which can lead to motor damage, and shuts down the pump to prevent harm.

4. Phase Sequence Protection:

   • Correct Phase Order: Ensures the correct phase sequence to prevent reverse rotation of the motor, which can cause mechanical damage.

5. Thermal Memory:

   • Motor Heating and Cooling Cycle Monitoring: Accurately tracks the thermal state of the motor, reproducing its thermal image to prevent overheating and ensure optimal performance.

6. Visual Indication of Tripping Cause:

   • Diagnostics: Provides clear visual indicators for trip causes such as overload, underload (cos φ), phase imbalance, phase loss, and phase sequence errors, facilitating easy troubleshooting.

7. Adjustable Reset Time for Cos φ:

   • Customizable Restart: Allows the user to set the reset time after a trip caused by underload conditions, ensuring the system stabilizes before the pump restarts.