A DC power supply protection device and method thereof

Abstract

The invention relates to a DC power supply protection device, which consists of a relay [1], a reverse diode [2], an overcurrent protection module [3], a power supply control switch [4], a DC power supply module [5], and a power supply indicator light [6] ], reverse polarity power supply indicator [7], positive polarity power supply indicator [8] and transient suppression diode [9]. 11] Correct power supply. It also relates to a direct current power supply protection method. The invention can improve the reliability, safety and work efficiency of the power supply system, the circuit is easy to build, the cost is low, and it can be popularized and applied in most automatic test systems.

Description

technical field [0001] The invention belongs to the technical field of test and measurement, and relates to a power supply protection device for DC power supply control and a realization method thereof. Background technique [0002] When working or testing power supply for DC power equipment, power supply control equipment with DC power supply control function is usually used to power supply and distribution control according to the work flow. At present, the connection method between the power supply control equipment and the DC regulated power supply generally uses terminal posts, without an error-proof design, and it is easy to reverse the positive and negative lines during wiring. As a result, the DC voltage of reverse polarity is connected to the electrical equipment, which will cause damage to the electrical equipment or even directly damage the electrical equipment, causing greater losses. In addition, when the power supply is correct, the current overload of the pow...

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Problems solved by technology

[0009] The object of the present invention is to provide a power supply protection device for DC power supply control and its implementation method, which can be connected to power supply control equipment and circuits with DC power supply control functions, and is used to solve the problem of the existing DC power supply for power consumption equipment. The power supply wiring error (such as reverse connection of positive and negative wires) that is prone to occur during power supply and the damage of electrical equipment caused by overloading of electricity, and the current protection can be set according to the load characteristics of electrical equipment to realize over-current protection and automatically cut off the power supply function, which can improve the safety of power supply lines and ensure the safety of electrical equipment

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