How To Wire The Sewage Pump

Mar 08, 2025

Two sets of four core cables: one set of three cables for power supply, one ground wire, another set of two leakage protection signal lines, and two overtemperature protection signal lines.

The water level controller is generally not directly related to the water pump (it is directly related to the connection between the water pump and the float ball at the factory). The water level controller is connected to the water pump control cabinet to achieve automatic control of the water pump. In addition, the unconnected cables are protective cables that can be used or not.
If there is an internal problem with the water pump motor, the signal line can transmit the relevant signals to the control cabinet to achieve the purpose of protecting the water pump. The power supply cables for general sewage pumps are three-phase four wire. Power exceeding 3kw is connected in a triangular configuration.
Nowadays, there are also a few manufacturers who use the same power supply method as ordinary motors, using six wires at higher powers (above 15kw and below 110kw) (mainly to use the star delta voltage reduction starting method)