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 |
2.Company Information
1)Brief Introduction:
Since 2001, Leading Science & Technology company has been providing pump control and protection solutions to pump users.
Today Leading Science & Technology offers a wide range of pump control panel & pump control accessories for the pump control and protection market.
Our products: Intelligent Pump Controller, Sewage Pump Controller, Booster Pump Controller, Deep Well Pump Control Box, Submersible Pump Controller, Pump Motor Starter,Programmable Logic Controller, IOT Pump Controller, Reverse Osmosis Controller.
2)Our Team
Leading company has three major departments:
1. Sales Team
2. R&D Team
3. Production Team
Sales team collect the information and technical requirements from pump manufacturers, pump distributors, pump users etc and report to our R&D team. According to the information, R&D team will evaluate firstly and start to research,develop and test the pump controller. Finally once the pump controller is workable, our production team will produce.
With our team members' close cooperation, Leading company has been developing many unique control and protection technology for pump industry.
3)Our Fair
4)Our Manufacturing Ability & Certificates
5)Our Service
1> Payment terms
2> Delivery terms
3.FAQ
