Motherboard electric connection construction for protection electric appliance controlling

Abstract

The invention relates to a mother board electric connecting structure of control and protection electrical apparatus, which comprises a circuit board used for connecting each module; the circuit board is provided with at least one contactor for transforming a mechanical signal and an electrical signal, at least an interface of a power module, an interface of a control and protection module and at least a circuit board; connectors (1, 3, 4, 5) and a control contactor (2) are installed on a mother board; and the motherboard is a circuit board or a wiring board and is used for providing a channel for a power cord and a signal line. The circuit board serves as the basis of the connection mode of the whole switch system, integrally solves the problem of switch system connection in a systematization and centralization manner, transforms the mechanical signal to the electrical signal, realizes communication between a mechanical system and an electrical system, and completes power supply for an electronic module and signal transformation. The structure solves the problems of multiple signals for transmission, tedious wiring, large space occupation and easy mutual influence caused by multifunction and modularization of the control and protection electrical apparatus.

Description

technical field [0001] The invention relates to an overall connection layout method of control and protection electrical appliances, more precisely, relates to an integrated and multifunctional motherboard electrical connection structure of control and protection electrical appliances, and belongs to the technical field of low-voltage electrical appliances. Background technique [0002] The structure of the electrical system of low-voltage electrical appliances mainly has two methods: one is composed of discrete switching devices that respectively realize the protection function (protection device, mainly a circuit breaker) and the control function (control device, mainly a contactor), They are installed independently, and the two electrical appliances are connected in series between the power supply and the load (such as Figure 1a shown). [0003] The operating mechanism of the protective appliance receives the fault signal from the detection control unit to trip and break...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent ZL 03103144.7 "Equipment for motor protection and control" relates to an operating mechanism of "a device with the functions of a contactor and a circuit breaker" (that is, a control and protection switch CPS), which realizes the normal operation of making and breaking 1. Two sets of independent four-bar linkages are used for breaking and re-locking of faults, so it does not involve the connection problem between them. The disadvantage is that the number of mechanism parts is increased and the manufacturing process is complicated.

[0008] It can be seen from the above prior art that different electrical systems and different CPS implementation methods are closely related to the interconnection of each module. The overall connection layout of the design will affect the number of parts and components that make up the entire mechanism system, the processing technology, and even the function and performance of the entire electrical equipment

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