Controller for digital control and protective switch appliance

A technology of control device and protection switch, applied in the parts of protection switch, protection switch, emergency protection device, etc., can solve the problems of difficult setting, low precision, poor reliability, etc., and achieve the effect of advanced technology and obvious economic benefits

Inactive Publication Date: 2007-06-27
浙江中凯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are problems such as low precision, difficult setting, poor reliability, etc.

Method used

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  • Controller for digital control and protective switch appliance
  • Controller for digital control and protective switch appliance
  • Controller for digital control and protective switch appliance

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0030] The digital controller of the present invention includes a main body module, a current detection module, a parameter setting input module, an output drive module, an output display module and a power supply module.

[0031] Referring to Fig. 1, it is a schematic block diagram of the digital control device of the present invention. As shown in the figure, the current signal from the current transformer and the zero-sequence current transformer is rectified, filtered and amplified by the signal conditioning circuit, and sent to the microprocessor. The microprocessor performs AD analog-to-digital conversion on the signal and calculates the current current value. . The parameter setting circuit sends some parameter signals set by the user to the microprocessor for storage, and the button circuit sends the current state signal of the button to the microprocessor. The microprocessor analyzes and processes the collected signals, judges the state of the current control and pro...

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PUM

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Abstract

This invention relates to a control device for digital-controlling and protecting switch appliances, in which, the primary module includes a microprocessor, an on-line programming circuit, a current detecting module includes signal collectng and regulating circuit of a current signal and zero-sequence current signal, a parameter setting input module includes setting of potentiometer, setting of DIP dialing and selecting switch and a key switch, an output drive module includes outputting solid relay drive control, an output display module includes a diode display circuit, and the current signals of the current mutual-inductor and that of the zero-sequence current mutual-inductor are rectified and filtered to be sent to the microprocessor for AD conversion to compute current value, the parameter setting circuit sets the parameter signal and sends it to the microprocessor to be stored and analyzes the collected signals to judge the state of the load and fault to cut the primary circuit by outputting the drive control circuit, the software of the control device includes a primary process and the combination of related sub-process and hardware.

Description

technical field [0001] The invention relates to a digital controller, more precisely to a control device for digital control and protection of switching appliances, which belongs to the technical field of motor control and protection. Background technique [0002] Control and Protection Switching Apparatus (CPS) is a new product in low-voltage electrical appliances. As a new major product, its product category code is "CPS", which is the abbreviation of "Control and Protective Switching Device" in English. [0003] The main features of CPS are: realizing integrated, internally coordinated control and protection functions on a single structural product, which can replace circuit breakers (fuse), contactors, overload (or overcurrent, phase failure) protection Various traditional discrete devices such as relays, starters, isolators, etc. [0004] Chinese patent No. 01238478.X utility model patent "an integrated control and protection switch" adopts modularization, has isolatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H83/00H01H83/14H01H71/00H01H71/74
Inventor 郭其一黄世泽屠瑜权
Owner 浙江中凯科技股份有限公司
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