Method for detecting heat resistance of electric wire and detection device thereof

A technology of wire and cable and detection method, which is applied in the field of detection of wire and cable performance, can solve problems affecting product reputation, etc., and achieve the effects of simple structure, accurate detection data, and easy operation

Inactive Publication Date: 2010-03-10
TIANJIN 609 CABLE COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to eliminate the user's doubts and confirm the use conditions and application reliability of the product, the heat resistance performance index of the product should be tested immediately. If the traditional detection method is used for detection, the problem cannot be solved for the user in time, and even affect the Product reputation

Method used

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  • Method for detecting heat resistance of electric wire and detection device thereof
  • Method for detecting heat resistance of electric wire and detection device thereof
  • Method for detecting heat resistance of electric wire and detection device thereof

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing.

[0014] refer to figure 1 , the wire and cable heat resistance detection method comprises the following steps:

[0015] (1) Take a finished wire and cable sample that is at least 1m long, and attach a weight to each end of the sample as a load. The weight of the load is about 2mm 2 Or thinner wires can be selected in the range of 100g-500g, for cross-section greater than 2mm 2 The load of the wire can be selected between 500g-1000g. The two ends of the sample should be stripped of a section of insulation, and then the conductors at both ends should be connected together (the wire is connected with the core, and the cable is connected with the shield), and then through the lead wire and the universal One end of the meter is connected.

[0016] (2) Hang the central part of the sample on the middle position of a U-shaped metal groove with the opening facing upwards. The uppe...

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Abstract

The invention relates to a method for detecting the heat resistance of an electric wire with a high-temperature cut-through method and a detection device thereof. The detection method comprises the following steps: 1, tying a heavy object at the two ends of a sample, connecting conductors at the two ends and then connecting with one end of a multimeter; 2, suspending the central part of the sampleon a metallic channel so that the sample is attached to the metallic channel, and then lifting the metallic channel and fixing the channel horizontally on a bracket so that the heavy object is suspended freely at two sides of the U-shaped metallic channel; 3, connecting any point on the metallic channel with the other end of the multimeter; and 4, placing the sample that is suspended on the U-shaped metallic channel and tied with heavy objects in a thermostat. When the temperature gradually rises to a certain temperature, an outside insulating layer of the sample starts to smelt, the conductor of the sample is in cut through with the U-shaped metallic channel, the multimeter deflects, and the temperature at the moment is the heat-resistance temperature of the electric wire. The inventionrealizes that the detection method is convenient to operate, the detection data is accurate and reliable and the detection device has simple structure. Therefore, the detection method can be generalized and applied as a new method for detecting the heat resistance of the electric wire.

Description

technical field [0001] The invention relates to a detection method and a detection device for the performance of electric wires and cables, in particular to a detection method and a detection device for the heat resistance of electric wires and cables using a high-temperature cut-through method. Background technique [0002] For polymer materials, the indicators for evaluating their heat resistance can be comprehensively evaluated by methods such as aging method, softening temperature method, melting temperature method, and Vicat softening point. The above test methods require too long test period, or general enterprises do not have the test conditions, so they cannot be implemented. Especially when the product is used by the user, the sheath shrinkage and the insulation layer may melt. This phenomenon directly affects the quality of the product. Therefore, it is necessary to timely understand the use conditions of the product and inspect the application status of the produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/04
Inventor 王媛敬夏云怀刘家栋柳剑耿光戴显尧李凤玉
Owner TIANJIN 609 CABLE COMPANY
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