How to start the mechanical emergency control cabinet
Release time:
2020-12-02
Mechanical emergency pump start is suitable for all starting methods, including full pressure start and reduced pressure start. The start controller includes: direct start, star-delta start and soft start. The direct start controller is simple, and the mechanical emergency handle only needs direct action. Close the main contactor to start the pump in an emergency; the star-delta start controller requires handle operation to close the two operating contactors to start the pump in an emergency; and the soft-start controller only relies on the emergency handle operation to close the bypass contact device to achieve emergency pump start.
Mechanical emergency pump start is suitable for all starting methods, including full pressure start and reduced pressure start. The start controller includes: direct start, star-delta start and soft start. The direct start controller is simple, and the mechanical emergency handle only needs direct action. Close the main contactor to start the pump in an emergency; the star-delta start controller requires handle operation to close the two operating contactors to start the pump in an emergency; and the soft-start controller only relies on the emergency handle operation to close the bypass contact device to achieve emergency pump start.
Introduction According to the GB standard of "Technical Specifications for Fire Water Supply and Fire Hydrant Systems", pressure start, remote start and hard-wire start all use relays to automatically start the pump. If the relay and weak current signal fail to automatically start the fire pump, you should rely on The "mechanical emergency starting device" installed in the fire pump control cabinet directly starts the fire pump. The "mechanical emergency starting device" is a device that directly starts the fire pump through direct transmission through a mechanical interlocking device. The device can be configured with two modes: star-delta start and step-down start. The starting handle of the "mechanical emergency starting device" is usually in a stopped state (locked) and must be operated by authorized management personnel in case of emergency fire. The output of the "mechanical emergency starting device" is connected to the output terminal in the original control cabinet to realize direct emergency start of the fire pump. When starting, press the manual start handle 90°. The fire pump adopts star-delta start or reduced pressure start method according to the distributed electrical appliances. The pump must be stopped manually by a person with management authority (the pump cannot be stopped automatically or manually in case of fire). .
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