A measuring device for the action time and synchronous characteristics of low-voltage electric appliance contacts

Abstract

The present invention provides a measuring device for contact action time and synchronization characteristics of low-voltage electrical appliances, wherein the measuring device for contact action time of low-voltage electrical appliances includes an electromagnetic mechanism power signal detection module, a contact mechanism action signal detection module and a first timing module The electric signal detection module of the electromagnetic mechanism is used to detect whether the electromagnetic mechanism of the low-voltage electrical appliance is powered on, and generates a timing start signal when it is detected that the electromagnetic mechanism is powered on; the contact mechanism action signal The detection module is used to detect whether the contact mechanism of the low-voltage electrical appliance has completed the action, and generates a timing stop signal when it detects that the contact mechanism has completed the action; the first timing module is used to start according to the timing input signal and the timing stop signal to obtain the contact action time of the low-voltage electrical appliance. Therefore, the technical problem of poor detection accuracy of the action time detection and contact synchronous characteristic detection of the low-voltage electrical contact in the prior art is solved.

Description

technical field [0001] The invention relates to a performance measuring device for low-voltage electrical appliances, in particular to a measuring device for the action time and synchronous characteristics of contacts of low-voltage electrical appliances. Background technique [0002] Low-voltage electrical appliances are widely used in low-voltage power distribution and control systems in all walks of life in the national economy, and are also used in the control and protection of electrical equipment for thousands of households, with a large quantity and a wide range. In terms of structure, it mainly includes two parts: one is the feeling part, which receives external signals and issues action commands, such as electromagnetic mechanisms. The second is the execution part. According to the instruction issued by the feeling part, the execution system completes the switching action, such as the closing or opening of the contact mechanism, to realize the on-off of the circuit....

AI Technical Summary

Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is that the action time detection and contact synchronous characteristic detection of the prior art low-voltage electrical appliance contact are affected by the accuracy of length measurement methods and utensils and the limitations of other human factors, and the detection accuracy is poor.

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