Special testing equipment for electric shock safety protector

Abstract

The invention discloses a special testing instrument for an electric shock safety protector. The special testing instrument comprises a single chip microcomputer, wherein the single chip microcomputer is connected with a voltage detection circuit and a current detection circuit, the voltage detection circuit and the current detection circuit are each connected with the electric shock safety protector, the single chip microcomputer is connected with the electric shock safety protector through a first driving circuit and a resistance adjusting unit, the single chip microcomputer is connected with the electric shock safety protector through a second driving circuit, and the single chip microcomputer is further connected with the electric shock safety protector through a switching-on / off detection circuit. According to the special testing instrument, actuation time of the electric shock safety protector is obtained by means of the single chip microcomputer according to the time difference between a driving signal of the second driving circuit and an actuation signal of the electric shock safety protector, and switch bouncing performance of the electric shock safety protector can be obtained precisely on the basis of the actuation time; the current detection circuit can detect leakage current of the electric shock safety protector at different resistance values accurately; and the resistance value can be automatically adjusted through the resistance adjusting unit, so that the resistance value can continuously approach the minimum current required by actuation of the electric shock safety protector.

Description

technical field [0001] The invention relates to the field of electrical equipment testing, in particular to a special testing instrument for electric shock protectors. Background technique [0002] Electric shock protector: also known as leakage protector, when electrical equipment gets an accidental electric shock, the power supply will be automatically cut off under the action of the electric shock protector, which will not cause personal accidents. [0003] The traditional electric shock protector test instrument consists of a mA meter and a water resistance box. The device is very simple and difficult to operate, and it is impossible to accurately measure the action time and leakage current of the electric shock protector. [0004] At present, although there is also an improved electric shock protector testing instrument, the volume is relatively large, and the real-time performance and accuracy are not high enough in detection. [0005] The bouncing performance of the ...

AI Technical Summary

Problems solved by technology

[0003] The traditional electric shock protector test instrument is composed of a mA meter and a water resistance box. The device is very simple and difficult to operate, and it is impossible to accurately measure the action time and leakage current of the electric shock protector.

[0004] At present, although there are also improved testing instruments for electric shock protectors, they are large in size, and the real-time performance and accuracy of detection are not high enough.

Images