ZDS Single-Phase Dry Running Protection
What is the Pump Protector – DRP?
The Pump Protector – DRP is an innovative electronic device that guarantees optimal protection of the submerged pump from dry running. Additionally, it also protects the motor from burning out in case of repeated starts and stops.
Installing the DRP
DRP’s come ready for use, integrated into the connection cable and need no further installation.
In case of water shortage, the DRP stops the pump immediately when the water drops below the device. The DRP restarts the pump automatically a short time after the water rises above the DRP to allow water to flow into the borehole.
In contrast to traditional solutions, no additional cables, sensors and control boxes are needed. The DRP device has been developed and tested to make the submerged pump function autonomously in conditions of water shortage.
In case of repeated starting and stopping of the pump, such as when the air in a pressure tank is low or the membrane is damaged, the DRP registers the frequent starts and stops and will automatically stop the motor from burning out. You are able to reset the DRP by disconnecting the power supply.
What are the technical limitations?
NOW the Pump Protector – DRP is available for Franklin motors single-phase as well as three-phase.
- The blue DRP is the single-phase dry running protection and uses a permissible range of 220-240v at frequency 50/60 Hz. In order to manage the inductive load of a single-phase motor, the maximum motor power is limited to 2.2 kW.
- The red DRP (https://peelpumps.co.uk/buy/zds-three-phase-dry-running-protection/) for three-phase has a permissible range of 220-240v at frequency 50/60 Hz maximum motor power is limited to 2,2 kW. For 380v-415v motors at frequency 50/60 Hz maximum motor power is limited to 4 kW.
DRP’s are available for every motor in the range up to and including 4 kW in single & three-phase. It is worth bearing in mind that, to ensure trouble-free operation, the three-phase DRP’s and the single phase 2.2 kW DRP may only be purchased with the appropriate motor, it cannot be bought as a separate unit. Because of the protection they offer to the motors, not just dry-running protection, the majority of motors will be supplied with the DRP already fitted.
It is still the case that no other manufacturer is able to match this product and we believe that it gives customers a terrific selling point when they are faced with competition from other brands.
If you require any technical assistance then please contact a member of our team on 01706 558 352 or [email protected]. We will endeavour to respond to you as quickly as possible.