Submersible pump start device

Simple submersible pump also has a lot of species and shape, it is also a fashionable object. Submersible pump start device mainly Y-type star delta starter start device, direct start device, auto-step-down start device, variable frequency step-down device these four. So what about their function? Then look at your introduction below.
1.Y-type star delta buck starting device
This is a large power submersible pump, can be run in the overload, stall and undervoltage and other abnormal operating conditions to protect, can also be based on changes in pressure or level of automatic control of submersible pump operation, and Equipped with stator winding overheating, bearing overheating, motor or oil indoor water and other special protection.
2.Direct start device
It is used for low-power submersible motor and submersible pump, starting device by the contactor, relays and other components, can be equipped with stator winding overheating protection.
3.Auto-step-down start device
This device can be on the submersible motor and submersible pump step-down start, starting device in addition to contactors, relays and other components, the control panel and equipped with a self-lotus transformer. Its function to the first two devices are equipped with the function.
4.Variable frequency step-down start device
Its function is that the water supply system can automatically adjust the system water supply pressure, so that the water supply pressure to maintain a constant, to avoid the water pressure fluctuations. Using the inverter device soft start, eliminating the start of the impact of the current, extending the service life of the device. The water supply system will automatically adjust the speed of the submersible pump and the number of running units according to the set pressure, so that the water supply system can be operated in the energy efficient optimization state.