Analyzing the various functions of dual power switches

　　Dual power switches are the most needed components in buildings today. Whether it is a commercial building, a residential building, or an industrial building, dual power switches for switching between main and backup power sources are an indispensable part. The following is a detailed analysis of the functions of dual power switches.

　　The dual power switch is suitable for power grid and power grid. When the common power supply returns to normal, it will automatically return to the common power supply after a set (adjustable) delay time.

　　Control function: The three status positions of the dual power switch are: "normal" switch closed, "standby switch disconnected"; "standby" switch closed; "normal" switch disconnected; both switches are disconnected to 0 position.

　　When the dual power switch grid and oil generator (F) is used in the grid and power generation system, the self-controller automatically switches the grid and power generation power supplies. When the grid voltage is lower than 85% of the rated voltage, the power generation command is issued through the power generation delay command (with a set of normally open and normally closed contact outputs). When the power generation voltage reaches 85% of the rated voltage, the load circuit is first disconnected from the grid, and then the power generation power is connected after a delay. When the grid returns to normal (reaching more than 85% of the rated voltage), the intelligent controller logically judges and automatically disconnects the load circuit from the power generation power supply and switches to the grid power supply.

　　The dual power switch is suitable for power grid and power grid. The automatic controller with automatic switching and no recovery automatically switches the two power supplies (i.e., the normal power supply and the standby power supply). When any power supply is abnormal (any phase voltage is overvoltage, undervoltage or phase loss), it will automatically switch to another normal power supply after the set delay, but it cannot automatically recover after the abnormal power supply returns to normal.

　　The switch realizes automatic operation function by a single-chip control device, which controls the reliable working voltage of the control motor of the main circuit.

　　Multiple operation modes: emergency manual control operation, automatic control operation.

　　Computer communication function After the machine is connected to the computer, it can directly monitor and control the dual power switch.

　　The upper limit is 220X115%V, the lower limit is 220X75%V, and the frequency is 50Hz+10%.