CN101162257A - Electric wire and cable electric voltage test methods and experiment machine - Google Patents
Electric wire and cable electric voltage test methods and experiment machine Download PDFInfo
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- CN101162257A CN101162257A CNA2007100314687A CN200710031468A CN101162257A CN 101162257 A CN101162257 A CN 101162257A CN A2007100314687 A CNA2007100314687 A CN A2007100314687A CN 200710031468 A CN200710031468 A CN 200710031468A CN 101162257 A CN101162257 A CN 101162257A
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Abstract
The invention discloses a method for testing the voltage of wires and cables and a test machine, belonging to the electrical variable measurement technical field, and relating particularly to a method for testing insulating layers of wires and cables and a test machine. The method of testing voltage of wires and cables is as follows: the water is adopted as electrodes; the wires and cables are plunged into water which acts as the electrodes and contacts the insulating layers and the insulating layers are examined thoroughly. Therefore, the insulating layers of the wires are subject to one hundred percent test, without any missing part. The test machine consists of a tank body, a voltmeter, a stabiliser, a switch disc, an indicator light, a ground guard, a safety protective bead chain and electrodes, wherein, the tank body is filled with water acting as the electrodes; the cable conductors pass through the water; therefore, the insulating layer are completely tested. A pinch roller which is insulating is arranged in the tank body of the invention to press the cable conductors to pass through the water. The invention is reasonable in design, low in cost, can provide one hundred percent test for the insulating layers of wires and avoids the test leakage.
Description
Technical field:
Electric wire and cable electric voltage test methods of the present invention and experimental machine belong to measures the electric variable field, particularly relates to a kind of method of inspection and experimental machine of wire cable insulating layer.
Background technology
In wires and cables industry, the electric wire that insulation course is arranged, all stipulate in process of production, on insulated wire, apply the voltage test of power frequency, use the sparking voltage testing machine to check the electrical property of insulation course whether to meet the regulation of product standard, when using, guarantee the safety of the person and equipment in order to satisfy electric wire.When on insulation course, having phenomenons such as hole, bubble, bottom pour ladle, insulation be thin partially to exist, add the setting of trial voltage after, electric breakdown phenomena will take place, if after fire inspection voltage breakdown rate surpasses required value, will make the judgement that non-conformity of quality closes to this product.The sparking voltage testing machine that uses is to adopt series connection metallic bond pearl at present, add trial voltage with the metallic bond pearl, when electric wire contacts with the metallic bond pearl, trial voltage is added on the tested insulation course, thisly add that with the metallic bond pearl method of trial voltage is simple and convenient, make easily, operate also more convenient, but it has the incomplete inspection defective of its check insulation course, usually chain pearl trolley wire insulation course has only three contacts, there is 1/4th insulation course not add trial voltage, because the contact area of metallic bond pearl and insulation course is limited, be merely able to check insulation course top, do not touch the following insulation course of metallic bond pearl, do not have voltage to be added on this part, this just forms omission and looks into, if during defectiveness, just do not have the puncture situation and produce on this insulation course, product can cause the potential safety hazard of the person and equipment.
Summary of the invention
The objective of the invention is to avoid the deficiencies in the prior art part and a kind of omission that prevents is provided, to electric wire insulation layer 100% check, electric wire and cable electric voltage test methods and experimental machine simply and easily.
The objective of the invention is to reach by following measure, electric wire and cable electric voltage test methods is that detected electric wire enters in the testing machine casing, in casing, be provided with alive experimental tank, water is housed in the tank, use water as the trial voltage electrode, detected electric wire is checked the wire cable insulating layer by experimental tank.Make the comprehensive engagement of water, check the whole of insulation course, prevent omission, to electric wire insulation layer 100% check as electrode and insulation course.Water is polar material, normal temperature is down for liquid, its specific inductive capacity is 81, and pure water (distilled water) has certain insulating property, makes water resistance on the electrician, but under state of nature, be a kind of liquid electric conductor, this is the result that water contains conductive impurity, and the test method of this experimental machine is exactly to utilize these characteristics of water, act on as conductive materials on the surface of electric wire insulation layer, wire conductor as ground wire (zero potential).
For electric wire is immersed in the water fully, in experimental tank, be provided with the insulation pinch roller, utilize the insulation pinch roller that cable is pressed in the water, electric wire passes through from water.
Be provided with hair dryer in the testing machine casing, the hair dryer in casing of the water on the electric wire after the inspection dries up, and keeps the electric wire surface non-conductive.
Electric wire and cable electric voltage experimental machine of the present invention; form by loam cake, casing, electrode, transtat, safeguard protection chain pearl, voltage table, switching motherboard, pilot lamp, earth protective device and leg; in casing, be provided with alive experimental tank; water is housed in the tank; use water as the trial voltage electrode; tank is supported and fixed in the casing with insulator; utilize water as electrode; detected electric wire enters in the testing machine casing; detected electric wire is checked the wire cable insulating layer by experimental tank.
For electric wire is immersed in the water fully, in experimental tank, be provided with the insulation pinch roller, utilize the insulation pinch roller that cable is pressed in the water, electric wire passes through from water.Utilize water as electrode and the comprehensive engagement of wire cable insulating layer, check the wire cable insulating layer.
The present invention considers the consumption of water, establishes a catch basin on experimental machine, with the water injection test tank in the catch basin, keeps the water level in the experimental tank with little submersible pump, to replenish the water that exhausts, guarantees that electric wire insulation layer adds voltage all the time.Experimental tank is located in the catch basin.Experimental tank also can be arranged with the catch basin branch.
Earth protective device of the present invention comprises the earthing of casing device with experimental machine casing ground connection, safeguard protection chain pearl ground connection and transtat.The present invention considers the security performance of electricity consumption, with experimental machine casing ground connection, plays the safeguard protection effect.With the inlet side of casing electric wire and the safeguard protection chain pearl ground connection that goes out the end place, prevent that the operative employee from stretching into hand the inlet side of electric wire and going out end, plays the safeguard protection effect.
The present invention is provided with hair dryer in the experimental machine casing, the water on the electric wire after detecting is dried up, and keeps the electric wire surface non-conductive, guarantees operator's safety of working.
The present invention is provided with the insulation pinch roller in casing, utilize pinch roller that conductor cable is pressed in the water and pass through, and the pinch roller insulation also is provided with the guide wheel of introducing electric wire in casing.
The present invention is reasonable in design, and cost is low, to 100% check of electric wire insulation layer, the drawback of naked layer omission.Cable has prevented to occur the situation of omission.
Description of drawings
Accompanying drawing 1 is an experimental machine structural representation of the present invention.
Accompanying drawing 2 is the inner vertical views of experimental machine of the present invention.
Accompanying drawing 3 is Electrical Safety synoptic diagram of the present invention.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing.
As accompanying drawing 1; shown in accompanying drawing 2 and the accompanying drawing 3; electric wire and cable electric voltage experimental machine of the present invention is by loam cake 1; casing 2; transtat 3; electrode 4; safeguard protection chain pearl 14; voltage table 8; switching motherboard 6; pilot lamp 5; earth protective device and leg 9 are formed; in casing, be provided with alive experimental tank 15; water is housed in the tank, uses water as the trial voltage electrode, safeguard protection chain pearl 14 is located at advancing of the interior electric wire of casing; go out end; experimental tank top is provided with insulation pinch roller 16 in casing; detected electric wire is pressed in the water, is provided with guide wheel at the experimental tank two ends, detected electric wire imports experimental tank; through pinch roller 16; detected electric wire indentation test tank is passed through from water, and cable insulation contacts with water, can check the whole of insulation course.Establish a catch basin 17 in the experimental machine casing, experimental tank 15 is located in the catch basin 17 and fixes with catch basin, every now and then the water in the catch basin is injected in experimental tank with little submersible pump,, guarantee that electric wire insulation layer adds voltage all the time in order to the water that exhausts in the complementary testing tank.Catch basin 17 supports 11 by insulator and is fixed in the casing.
In the experimental machine casing, be provided with hair dryer 7, the water on the electric wire after detecting is dried up, keep the electric wire surface non-conductive, guarantee operator's safety of working.Hair dryer is located at the exit that detected electric wire is positioned at experimental tank.Be provided with isolating switch 13 between loam cake and casing, as long as loam cake 1 one opens, power supply disconnects immediately, and automatic protective effect is arranged.On casing, be provided with the binding post 18 that connects experimental voltage.
As shown in Figure 3, earth protective device of the present invention comprises the shell 19 and the safeguard protection chain pearl 14 ground protection systems of experimental machine casing 2, transtat, plays the safeguard protection effect, and the range of regulation of transtat 3 is 0-15KV.Detected electric wire and cable conductor ground connection, detected electric wire enters testing machine after extrusion molding insulation machine 12 comes out, utilize the comprehensive engagement of water as electrode and insulation course, checks the whole of insulation course.Prevent omission, to electric wire insulation layer 100% check.
The conductor part of the electric wire that the present invention is detected must dead earthing, so rotating disk that unwrapping wire is used, support etc. adopt the material of good conductivity fully, meets the standard of zero tolerance.
Claims (10)
1. electric wire and cable electric voltage experimental machine; it is made up of loam cake, casing, electrode, transtat, safeguard protection chain pearl, voltage table, switching motherboard, pilot lamp, earth protective device and leg; it is characterized in that being provided with alive experimental tank in casing, experimental tank is supported and fixed in the casing by insulator.
2. a kind of electric wire and cable electric voltage experimental machine according to claim 1 is characterized in that experimental tank top is provided with the insulation pinch roller in casing.
3. a kind of electric wire and cable electric voltage experimental machine according to claim 1 is characterized in that establishing a catch basin in the experimental machine casing.
4. a kind of electric wire and cable electric voltage experimental machine according to claim 1 is characterized in that being provided with hair dryer in casing.
5. a kind of electric wire and cable electric voltage experimental machine according to claim 1; it is characterized in that safeguard protection chain pearl be located at electric wire in the casing into and out of end, earth protective device comprises the shell and the safeguard protection chain pearl earth protective device of experimental machine casing, transtat.
6. a kind of electric wire and cable electric voltage experimental machine according to claim 1 is characterized in that being provided with isolating switch between loam cake and casing.
7. a kind of electric wire and cable electric voltage experimental machine according to claim 3 is characterized in that experimental tank is located in the catch basin, and catch basin is supported and fixed in the casing by insulator.
8. an electric wire and cable electric voltage test methods is characterized in that detected electric wire enters in the testing machine casing, is provided with alive experimental tank in casing, water is housed in the tank, use water as the trial voltage electrode, detected electric wire is checked the wire cable insulating layer by experimental tank.
9. electric wire and cable electric voltage test methods according to claim 9 is characterized in that being provided with the insulation pinch roller in experimental tank, utilize the insulation pinch roller that cable is pressed in the water.
10. electric wire and cable electric voltage test methods according to claim 9 is characterized in that being provided with hair dryer in the testing machine casing, and the hair dryer in casing of the water on the electric wire after the inspection dries up, and keeps the electric wire surface non-conductive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100314687A CN101162257A (en) | 2007-11-14 | 2007-11-14 | Electric wire and cable electric voltage test methods and experiment machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100314687A CN101162257A (en) | 2007-11-14 | 2007-11-14 | Electric wire and cable electric voltage test methods and experiment machine |
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| Publication Number | Publication Date |
|---|---|
| CN101162257A true CN101162257A (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100314687A Pending CN101162257A (en) | 2007-11-14 | 2007-11-14 | Electric wire and cable electric voltage test methods and experiment machine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576600B (en) * | 2009-05-15 | 2011-11-16 | 重庆大学 | Self-walking underground cable failure detection intelligent instrument |
| CN101707090B (en) * | 2009-11-18 | 2012-10-03 | 芜湖明远电线电缆有限责任公司 | Cable traction assisting device |
| CN102928748A (en) * | 2012-10-29 | 2013-02-13 | 佛山市川东磁电股份有限公司 | Test method and test system for water-soaking pressure resistance of double metal piece type waterproof temperature controller |
| RU2491565C1 (en) * | 2012-03-14 | 2013-08-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" | Method to define resistance of enamelled wire insulation to surface discharge |
| CN101603948B (en) * | 2009-07-09 | 2013-11-13 | 株洲时代电气绝缘有限责任公司 | Method and device for on-line withstand voltage detection of film sintered electromagnetic wire |
| CN106646150A (en) * | 2016-10-28 | 2017-05-10 | 国家电网公司 | Movable type submersible pump insulation test container |
| CN111366823A (en) * | 2020-04-08 | 2020-07-03 | 深圳市鹏盛达工程测试有限公司 | Device and method for detecting withstand voltage of cable |
| CN111624450A (en) * | 2020-06-10 | 2020-09-04 | 远东电缆有限公司 | Cable winding discharge test method |
| CN113063986A (en) * | 2021-02-03 | 2021-07-02 | 安徽新科电缆集团股份有限公司 | Cable insulation resistance detection device |
| CN117250454A (en) * | 2023-11-15 | 2023-12-19 | 深圳市胜威南方科技有限公司 | Bus insulation state detection device |
-
2007
- 2007-11-14 CN CNA2007100314687A patent/CN101162257A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576600B (en) * | 2009-05-15 | 2011-11-16 | 重庆大学 | Self-walking underground cable failure detection intelligent instrument |
| CN101603948B (en) * | 2009-07-09 | 2013-11-13 | 株洲时代电气绝缘有限责任公司 | Method and device for on-line withstand voltage detection of film sintered electromagnetic wire |
| CN101707090B (en) * | 2009-11-18 | 2012-10-03 | 芜湖明远电线电缆有限责任公司 | Cable traction assisting device |
| RU2491565C1 (en) * | 2012-03-14 | 2013-08-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" | Method to define resistance of enamelled wire insulation to surface discharge |
| CN102928748A (en) * | 2012-10-29 | 2013-02-13 | 佛山市川东磁电股份有限公司 | Test method and test system for water-soaking pressure resistance of double metal piece type waterproof temperature controller |
| CN105911444A (en) * | 2012-10-29 | 2016-08-31 | 佛山市川东磁电股份有限公司 | Flooding withstand pressure testing method for bimetallic strip waterproof temperature controller |
| CN106646150A (en) * | 2016-10-28 | 2017-05-10 | 国家电网公司 | Movable type submersible pump insulation test container |
| CN111366823A (en) * | 2020-04-08 | 2020-07-03 | 深圳市鹏盛达工程测试有限公司 | Device and method for detecting withstand voltage of cable |
| CN111624450A (en) * | 2020-06-10 | 2020-09-04 | 远东电缆有限公司 | Cable winding discharge test method |
| CN113063986A (en) * | 2021-02-03 | 2021-07-02 | 安徽新科电缆集团股份有限公司 | Cable insulation resistance detection device |
| CN117250454A (en) * | 2023-11-15 | 2023-12-19 | 深圳市胜威南方科技有限公司 | Bus insulation state detection device |
| CN117250454B (en) * | 2023-11-15 | 2024-03-12 | 深圳市胜威南方科技有限公司 | Bus insulation state detection device |
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Open date: 20080416 |