Control power protection device

Abstract

The present invention provides a control power protection device, comprising: an automatic power switching unit, a voltage conversion unit, and an equipment switch protection unit; it can solve the problems of phase loss failure of control power supply and different control power supplies for various load equipment, as well as the protection functions of electronic circuits and electronic instruments, improve the deficiencies of conventional technology, and enhance electrical safety.

Claims

1. A power supply protection device, comprising: An automatic power switching unit, a voltage conversion unit, and an equipment switch protection unit are included: The automatic power switching unit is equipped with an input terminal for connecting to an external power source and an automatic switching circuit. The automatic switching circuit can be controlled by one or more relays. It configures the automatic power switching function based on the voltage status between each phase of the external power source and automatically switches a group of power sources with power between two phases according to sequential logic. This is electrically connected to the voltage conversion unit, which can be connected to an external meter to display the voltage status of the external power source. The voltage conversion unit is electrically connected to the automatic power switching unit. The voltage conversion unit can be equipped with a transformer according to the working voltage requirements of the connected load. The transformer transforms the voltage of the external power source into the working voltage required by the load and electrically connects the appropriate working power source to the equipment switch protection unit. The device's switch protection unit is electrically connected to the voltage conversion unit. The switch protection unit includes a current-limiting element, a current-limiting switch, and an output connection terminal. When the current-limiting element is activated, the current-limiting switch cuts off the power to the circuit, preventing conduction and protecting the load equipment. The current-limiting switch is a non-fuse type, resettable and reclosable. The current-limiting switch is connected to the output connection terminal for connection. The control power protection device, when the external power supply is missing a phase, activates the voltage conversion unit and provides two energized phases. It can connect to the external meter to display the external power supply voltage, preventing voltage display failure and control circuit malfunction due to phase loss. The device's switch protection unit can provide appropriate operating power according to the load's operating voltage requirements through internal voltage conversion. The control power protection device can protect electronic equipment, cutting off power in case of overcurrent faults and resetting for power restoration, achieving the function of protecting electronic equipment from phase loss and ensuring reusability.

2. A power supply protection device, comprising: An automatic power switching unit and an equipment switch protection unit: The automatic power switching unit is equipped with an input connection terminal for connecting to an external power supply and an automatic switching circuit. The automatic switching circuit can be controlled by one or more relays. It configures the automatic power switching function according to the voltage state between each phase of the external power supply and automatically switches a group of power supplies with power between two phases in sequence logic. It is electrically connected to the equipment switch protection unit. The equipment switch protection unit is electrically connected to the automatic power switching unit. The equipment switch protection unit is equipped with a current limiting element, a current limiting switch and an output connection terminal. When the current limiting element is activated, the current limiting switch is activated to cut off the power to the line and prevent conduction, protecting the load equipment. The current limiting switch is a non-fuse type that can be reset and reclosed. The current limiting switch is connected to the output connection terminal to provide connection. The control power protection device, when the external power supply is missing a phase, the automatic switching circuit configures the voltage state between each phase of the external power supply to automatically switch the power supply, so that the control circuit will not fail due to the missing phase, and can provide appropriate working power according to the load working voltage requirements. The control power protection device can protect electronic equipment, cut off power in case of overcurrent fault and reset power, so as to achieve the function of protecting electronic equipment from failure due to the missing phase and allowing it to be used repeatedly.

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