The so-called dual power control cabinet is a new type of control cabinet that has a common power supply and a backup power supply and can be automatically switched. The dual power control cabinet mainly consists of a dual power automatic switching device, which can automatically switch between the commonly used power supply and the backup power supply according to demand, ensuring the reliability and continuity of power supply in a timely manner. When the commonly used power supply encounters faults such as power outage, undervoltage, overvoltage, phase loss, frequency deviation, etc., under the control of a dual power control cabinet, it will automatically switch to a backup power supply, ensuring the continuous and uninterrupted operation of relevant electrical equipment. It is widely used in important places that require uninterrupted power supply, such as fire protection systems, hospitals, complexes, high-rise buildings, high-speed railway airports, industrial and mining enterprises, and ship transportation, to achieve unmanned continuous power supply.

       The function of the dual power control cabinet is reflected in: when there is a power outage due to faults such as power outage, undervoltage, overvoltage, phase loss, frequency deviation, etc., and the power supply cannot be restored in a short period of time, the backup power supply must be started. When the standby group operates normally, the generator air switch and each circuit breaker in the self backup power control cabinet must be closed in sequence. When restoring power supply, it is necessary to promptly perform power conversion work, cut off the backup power supply, and restore normal power supply.

       How to choose a professional dual power control cabinet?

       Since dual power control cabinets are so important, how should we choose a professional dual power control cabinet during the procurement process?

(1) Must have manual and automatic switching functions, able to send feedback signals to the fire control center;

(2) It must have protection and sound and light alarm functions for overvoltage, undervoltage, phase loss, overcurrent, overload, etc;

(3) Must have self switching, mutual backup function, and isolated input power supply;

(4) It must have three-phase current indication, three-phase voltage indication, main and backup power supply indication, sound and light alarm, and clear working status at a glance;

(5) Must have lightning protection function to avoid damage to equipment caused by lightning;

(6) Must have automatic lighting and temperature/humidity adjustment functions inside the cabinet;

(7) It must have an automatic inspection interface, which can achieve regular automatic switching of dual power supply device operation and detect the status of the main and backup power supplies;

(8) It must be equipped with a residual current type electrical fire monitoring detector that can communicate with the electrical fire host to prevent the occurrence of electrical fires;

(9) The cabinet body must be welded with high-quality cold-rolled steel plates, pickled and sprayed with plastic, resistant to impact and corrosion, with a protection level of up to IP55.