W-DI4 Dry Running Protection
W-DI4 is a device that protects pump motors from dry running (Dry Running) by detecting motor electrical current and automatically shutting down when problems occur with time delay settings to prevent unnecessary power cuts. Key features include:
- Voltage Support: Works with 1-phase motors (220V) and 3-phase motors (380V)
- Protects Motors from Dry Running:
- Detects electrical current and automatically cuts circuit when current is too low or too high
- Protection Setting Functions:
- Under Current Protection: Cuts operation when current too low (protects against Dry Run)
- Over Current Protection: Cuts operation when current too high (protects against overload)
- Various Time Settings:
- Start Delay Timer: Set startup delay 0-999 seconds
- Off Delay Timer: Set shutdown delay 0-999 seconds
- Recovery Delay Timer: Set automatic restart delay 0-999 minutes
- Supports External Device Connection:
- Level Switch terminal for water level detection
- External Reset Input for automatic external reset
- LED Display:
- 7-Segment Display 0.39″ (9.90mm) shows real-time current
- LED Power, ON, Fault and Time Indicator
- SPDT Relay Output Support:
- Can control devices supporting current 5A at 250V AC
- Easy installation on DIN 35mm rail
Suitable for groundwater pump systems, factory pump systems, irrigation systems, and industries requiring motor protection from dry running