Electric arc test method and apparatus for contact head disjunction of switch apparatus

A technology of switching electrical appliances and test methods, which is applied in the field of switching electrical appliances contact breaking arc test method and its device, can solve the problems of low test efficiency, inability to guarantee the reliability of test results, and inability to provide effective guarantees for arc theory research, etc., to achieve The effect of improving performance and reliability

Inactive Publication Date: 2009-07-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various arc theory research institutions at home and abroad have launched the development of arc test devices, but the existing devices can only test one or several of the above influencing factors, and

Method used

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  • Electric arc test method and apparatus for contact head disjunction of switch apparatus
  • Electric arc test method and apparatus for contact head disjunction of switch apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, combining figure 1 , figure 2 , the present invention switch electrical contact breaking arc test device, it is made up of mechanical system (1) and circuit system (2); Mechanical system (1) connects circuit system (2).

[0034] The mechanical system (1) includes a transmission unit (3), a test environment control unit (4), a sealing cover (5) and a base (6); the sealing cover (5) and the base (6) are connected by screws, and the transmission unit (3) placed in the sealed environment formed by the sealed cover (5) and the base (6), and the test environment control unit (4) is connected to the base (6).

[0035] The transmission unit (3) includes a stepping motor (7), a ball screw (8), a moving contact clamping mechanism (9), a static contact clamping mechanism (10), a rolling guide rail (11), a slide block (12) and spring (13); the stepper motor (7) is connected to the ball screw (8), the moving contact clamping mechanism (9) is connected to the rolling...

Embodiment 2

[0038] Example 2, combined with figure 1 , figure 2 , The switching device contact breaking arc test method of the present invention includes a relay arc test and a simulated arc test.

[0039] Described relay arc test, steps are as follows:

[0040] Step 1: Fix the relay to the static contact clamping mechanism (10);

[0041] Step 2: System initialization, adjusting the position of the adjustable blowing permanent magnet (14) according to the test requirements;

[0042] Step 3: Closely connect the sealing cover (5) to the base (6), first use the vacuum machine (15) to exhaust the air in the sealing system, and use the vacuum gauge (17) to monitor the air pressure in the system; then use the inflator (16) Inflate the gas according to the gas composition and ratio required by this test;

[0043]Step 4: the microprocessor (22) sends a control signal to the arc control circuit (21), and the power supply circuit is closed;

[0044] Step five: the microprocessor (22) controls...

Embodiment 3

[0056] Embodiment 3, the switching device contact breaking arc test device according to the present invention can perform different contact materials (gold, silver, etc.), arc chamber gas components (air, nitrogen, helium, argon, etc.) and pressure, Contact breaking speed (1~50cm / s), breaking power (maximum voltage: 270V, maximum current: 250A) and arc tests under various magnetic blowing conditions. Generally speaking, the device has two functions: one is to carry out the arcing test of the relay, that is, to place the relay in the arc chamber and conduct the arcing test in a controlled environment; The head and the moving contact) are placed in the arc chamber, and the relative movement of the two is driven by the motor to simulate the arc burning process.

[0057] When carrying out the relay arc test, the working steps are as follows:

[0058] Step 1: Fix the relay to the static contact clamping mechanism (10);

[0059] Step 2: System initialization, adjusting the positio...

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Abstract

The invention aims to provide a disjunction electric arc testing method for a switching electric appliance contact for providing effective guarantee for electric arc theoretical studies with even performance figures, high testing efficiency and reliable testing result, and a device thereof. The device consists of a mechanical system and a circuit system, which are connected. The disjunction electric arc testing method for the switching electric appliance contact and the device thereof comprise relay electric arc testing and simulated electric arc testing. The method and the device solve the problem that theoretical analysis or computed result is difficult to verify during the electric arc theoretical studies. The invention provides a relay electric arc testing method and a simulated relay electric arc testing method. The method and the device meet requirement for various testing conditions during electric arc testing, and solve the problems of low testing efficiency and poor confidence level of the testing result. For deep comprehending the arcing mechanism and analyzing the property of the electric arc, the invention further provide a method for quickly extinguishing arc to provide effective support for improving the performance and the reliability of a relay.

Description

(1) Technical field [0001] The present invention relates to arc test technology, specifically a method and device for breaking arc test of contacts of electrical switchgear (2) Background technology [0002] As an automatic control element, the relay has been widely used in various sectors of the military and the national economy, and is one of the indispensable basic elements of cutting-edge national defense technology, advanced industrial and civilian equipment. Relay failure often has a significant impact on the system, so the life of relays has become the focus of people's research. An important factor affecting the life of the relay is the arc ablation generated when the contacts are broken. It is of great theoretical significance and practical value to study the ablation caused by contact arc combustion, analyze the factors affecting the life according to the ablation situation, and predict the life of the relay. However, the arc combustion process is a multi-field c...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 翟国富周学崔行磊叶雪荣赵晓东李岩信鹏皓
Owner HARBIN INST OF TECH
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