Power cable crimping process-quality inspection after crimping
NEW

2013-01-22

Power cable crimping process-quality inspection after crimping

1) The surface of the crimping part should be smooth without cracks and burrs. There shall be no tip at all edges. 2) The depth of the pit shall be consistent with the height of the press-in part of the male die, and the bottom of the pit shall be flat and undamaged. 3) The electrical and mechanical properties of the crimp joint shall comply with GB/T9327-1988 Test Method for Compression and Mechanical Connection of Cable Conductor.

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Six major causes of wire and cable problems
NEW

2013-01-24

Six major causes of wire and cable problems

1, insulation aging deterioration of wire and cable insulation to be accompanied by electrical action brought about by the role of thermal, chemical and mechanical, so that the insulation medium physical and chemical changes, so that the insulation capacity of the medium decreased. Insulation is damp, the insulation is damp due to the upper and lower sealing of the structure or poor installation quality of the intermediate joint or terminal head, and defects such as sand holes or cracks are left when manufacturing the cable package lead, which will also make the cable damp. There are many reasons for cable overheating. The internal cause is the cable insulation internal air gap free caused by local heating, so that the insulation carbonization. External causes are installed in cable-dense areas, cable tunnels, etc.

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Power cable crimping process-crimping
NEW

2013-01-22

Power cable crimping process-crimping

1) The position of each indentation shall be selected according to the position and regulations marked on the connecting pipe or terminal cylinder. The axial center line of the indentation pit for local crimping or the center line of the opposite side of the inscribed circle in the hexagonal integral crimping shall be on the same straight line. The degree of crimping shall be subject to the contact of the lower die or the effective stroke specified by the press clamp. After pressing an indentation, it should stay for 10~15S. The pressure was then removed. The operation method of the press clamp shall be carried out according to the procedures specified in the press clamp instructions of the press clamp manufacturer. 2) After pressing, use a fine-tooth file to file the water chestnut tilted due to pressure at the edge of the pit and the end of the connecting pipe, and polish it with sandpaper, and then use cotton dipped in gasoline.

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Wire and cable fault analysis
NEW

2013-02-22

Wire and cable fault analysis

Fault analysis is an important work to ensure the safe operation of the cable line system. Attaching importance to this work is the basis for eliminating the causes of cable faults and the strong basis for improving cable technology, including line design, cable manufacturing and operation. Although the cable structure, including the design of accessories, has been carefully studied in the production process and passed a series of relevant tests before it was put into operation, these are not all realistic simulations of the long-term operation of individual actual cable lines. Therefore, the occurrence of cable line failures can be determined in which links it is necessary to improve. If only to meet the rush to repair the cable fault and ignore the analysis of the cause of the failure

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Cable line barrier test
NEW

2013-04-14

Cable line barrier test

The cable line barrier test can use test methods such as DC bridge, AC meter or line pulse tester. Compared with the general DC test method and AC test method, the pulse test method has the following advantages: it can determine the line obstacle in a very short time; it can determine the distance of the obstacle with high accuracy; it can distinguish the location of several obstacles existing at the same time; the operation is simple and convenient, easy to master, and the test results can be read directly from the indicator. However, it is not very effective to use pulses to check the obstacles of poor line insulation, so it needs to be used in conjunction with other methods. Use a pulse tester to test line obstacles, which are in the line under test.

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Repair cable internal fault
NEW

2013-04-14

Repair cable internal fault

Removal of moisture inside the cable When the cable or cable near the joint is damp less than 3m, the lead sleeve can be longitudinally dissected. After the moisture is removed by the above method, the lead sleeve can be longitudinally sectioned or wrapped with a lead sleeve larger than the outer diameter of the cable lead sleeve before sealing and welding. If the damp core wire exceeds 3m. Then connect this section of cable. Change cable Prepare a new cable longer than the cable to be removed for change. Before the connection is changed, the new and old cable cores must be numbered and paired one by one to avoid wrong connection and audio calls. When the connection is changed, the two connection points should be paired once, paired and paired, I .e. the two parties should pair with the new cable first.

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International Business:0871-67334199
Business fax: 0871-6738 8841
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Company Headquarters: 11th Floor, Tower 1, Dongju Jiaxin Business Center, Guandu District, Kunming City, Yunnan Province
Production base: Xiaoshao and other areas of Qidian Industrial Park, Chenggong District, Kunming City, Yunnan Province

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