A charging machine door opening power failure safety protection

Abstract

The invention discloses a safety protection for a charging machine when the door is opened and the power is cut off. line, and a travel switch is connected in series on the second circuit between the second connection lines, a transfer switch and a time relay are connected in series on the second connection line from left to right, and a stop button is connected in series in the middle of the second connection line , a start button and a main contactor are connected in series at the right end of the second circuit, a main contactor is connected in series on the third connection line, a transfer switch is connected in series at the left end of the lower part of the first circuit, and the first connection line runs from left to On the right side, there are time relays and maintenance indicator lights in series. This invention completely solves the accidents of non-operators accidentally opening the door and getting an electric shock. It meets the safety protection requirements of electrical equipment in Hong Kong. It has strong practicability and is easy to operate.

Description

technical field [0001] The invention relates to the technical field of door-opening and power-off safety protection for a charger, in particular to a door-opening and power-off safety protection for a charger. Background technique [0002] The chargers used in the mainland have no special requirements for opening the door and cutting off the power, so the general chargers do not have this function, but Hong Kong has very strict requirements for electrical safety, especially strict requirements for electrical equipment accidental electric shock. If the charger does not have the safety protection measures of opening the door and cutting off the power, it cannot pass the inspection. Contents of the invention [0003] The object of the present invention is to provide a safety protection for a charger when the door is opened and the power is cut off, so as to solve the problems raised in the above-mentioned background technology. [0004] In order to achieve the above object, ...

AI Technical Summary

Problems solved by technology

[0002] The chargers used in the mainland have no special requirements for opening the door and cutting off the power, so the general chargers do not have this function, but Hong Kong has very strict requirements for electrical safety, especially strict requirements for electrical equipment accidental electric shock. If the charger does not have the safety protection measures of opening the door and cutting off the power, it cannot pass the acceptance test.

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