Secondary non negative pressure water supply equipment

The start-up of secondary non negative pressure water supply equipment can be achieved through various methods such as direct power frequency start-up, self coupling voltage reduction start-up, Y - △ voltage reduction start-up, thyristor soft start control, frequency conversion constant pressure control, etc., to meet different usage requirements.

It has fault alarm and protection functions such as overvoltage, undervoltage, overcurrent, short circuit, phase loss, and water source shortage. The main and backup fire pumps have a mutual backup function, and the backup pump will automatically start working when the main pump fails. Dual power switching function can be installed according to user needs, or a separate dual power switching cabinet can be equipped. The main and backup power supplies can be automatically or manually switched. When the main power supply of the secondary non negative pressure water supply equipment is cut off, the backup power supply will automatically be put into operation. When the main power supply is restored, the backup power supply will automatically exit.