What is the fire alarm of the power cabinet of the fire pump?

The fire alarm of the fire pump power cabinet may be caused by the start of the pump or the burning of the control coil of the pump.

There is a module for pressure switch with strong electromagnetic interference at the scene. The symptom is that the high-power equipment starts regularly and the main engine reports the pressure switch failure. The solution is to have a displacement pressure switch module on site and add a module shielding device (the module is wrapped in tin foil). The fault is caused by poor contact of the terminal resistance (on the module) of the pressure switch module.

Control principle of fire water pump: In case of fire, the fire water pump will start the star triangle depressurization by closing the fire hydrant button (or controlled by the fire control host), or soft start, the sprinkler will automatically spray water to extinguish the fire, and the fire hydrant will also have water to extinguish the fire.

The control system of fire pump group is controlled by microcomputer program and circuit, and the electric cabinet will control all the working states of the device, and check the whole device through the "patrol control system", and will send out an audible and visual alarm signal in case of failure.

According to the requirements of fire power control, relays, contactors, etc. It's just a constant overload. This situation is mostly due to the need to adjust the current of the thermal relay.