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Precision tripping device

A release, sophisticated technology, applied in the direction of program control in sequence/logic controller, emergency protection device for automatic disconnection, electrical components, etc., can solve the problems of accuracy gap and other problems, and achieve high accuracy and high safety Performance, the effect of protecting electrical equipment and line safety

Active Publication Date: 2011-05-04
张 世兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Although the invention patent CN1835167A (multi-range time program control circuit breaker) can improve the sensitivity and accuracy of tripping protection by modifying the rated current, it needs manual setting to complete, and its accuracy still has a certain gap

Method used

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Embodiment Construction

[0037] Provide a kind of implementation mode of precision release below in conjunction with accompanying drawing, to further illustrate the working principle of the present invention and the execution step that the single-chip computer program memory of electronic control system 1 stores the program, single-chip computer IC1 should comprise the following several parts and form: microprocessing memory, program memory and data memory or general memory, EEPROM data memory, I / O ports, multiple A / D converters, multiple timers / counters, captures / comparators / pulse modulators, communication ports and other resources.

[0038] The use of single-chip microcomputer control can achieve good results of intelligence and low cost. If factors such as volume and manufacturing costs are not considered, the single-chip microcomputer IC1 of the electronic control system 1 can also be replaced by a general-purpose computer. The electronic control system 1 of the precision release coordinates intern...

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Abstract

The invention belongs to the technical field of high-voltage and low-voltage electric appliances and relates to a precision tripping device which mainly comprises an electronic control system 1, a tripping mechanism 2 and a current sensor 3. The functions of precision tripping protection and control are fulfilled, and in a set mode, the comparison operation are carried out on a collected load current and a rated current, a ratio coefficient of an operation result is memorized and stored, and the collected load current which is smaller than the rated value is enlarged to be equal to or approach the rated current value in a running mode, thereby acquiring the precision safety protection characteristics of high sensitivity and high accuracy, ensuring safe running of electric equipment and anelectric line and putting an end to occurrence of personal and equipment accidents and fires. The invention is mainly used for precision tripping protection and precision control of various circuit breakers, is suitable for precision control of a contactor, a relay, an electromagnet and an electromagnetic valve and is additionally suitable for other control devices adopting a proportion amplification method to enhance the sensitivity and the accuracy.

Description

technical field [0001] The invention belongs to the technical field of high and low voltage electrical appliances Background technique [0002] In the transmission, distribution and use of electric energy, circuit breakers are the most basic protective switching electrical components, occupy an extremely important position, and have a wide range of applications. They have almost completely replaced fuses in the fields of industrial, civil and building power distribution. [0003] The circuit breaker has two main functions: one is the switching function of starting and stopping the electrical equipment, and the other is the protection function of automatically cutting off the power supply when the line or electrical equipment is overloaded or short-circuited. The protection function is a very important function of the circuit breaker, and it is an important means to protect the electrical equipment and personal safety. The basic protection functions of the circuit breaker ma...

Claims

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Application Information

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IPC IPC(8): H01H71/00H01H83/00G05B19/04H02H3/08H02H3/04
CPCH02H3/08H02H1/0092
Inventor 张世兴
Owner 张 世兴
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