Detailed Product Description
| Size: | Small | Packing: | Carton |
|---|---|---|---|
| Input Voltage: | AC220V/50HZ | Phase: | Single Phase |
| Rated Output Power: | 0.37kw-2.2kw | Protection Grade: | IP22 |
Dry run protection with sensor free, single phase pump controller for borehole pumps
S521 is a single phase pump control panel which supports dry run protection with sensor free. It saves cost and labor for users,especially for borehole pumps which is difficult to install sensors in the deep well. As S521 has push button calibration function. The rated ampere can be memorized into the control panel by pressing STORE button inside the control. When the running ampere drops to 70% of the rated current, control panel will regard it as dry run and stop the pump.
| Model | S521 |
| Main technical data | |
| Start type | Direct on line |
| Qty of controlled pump | Single pump |
| Rated input voltage | AC220V-240V Single phase 50HZ/ 60HZ |
| Rated output power | 0.37kw-2.2kw (0.5hp-3hp) |
| Capacitor | Reserved space for installing start capacitor |
| Product function | Over load protection Pump stalled protection Dry run protection with sensor free Under voltage protection Over voltage protection |
| Application & Control characteristic |
Control and protect universal pump Using water level sensor or float switch or pressure switch to control pump start and stop Applied for water supply by liquid level control through float switch or liquid probe Applied for water supply by pressure control through pressure switch and pressure tank Applied for drainage by liquid level control through float switch or liquid probe |
| Other features | Push button calibration Memory function when power off & recovery |
| Main installation data | |
| Working temperature Working humidity Degree of protection Install position Unit dimension (L x W x H) |
-25ºC– +55ºC 20%–90%RH, no drips concreted IP22 Wall mounting 1 70× 1 55× 8.5mm |
