NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–CCTV Tester
Question: Cable maintenance : Cable maintenance worker's operating rules Answer: Article 1 When lifting the cable for maintenance, use the instrument or test bench to find the fault point and mark the fault point location. The second cable that needs to be repaired must be used when the wire is broken or the copper wire of the core wire is broken by more than 15%. Question: Cable Repair: Cable Repairer Operating Procedures Answer: The first cable repaired by lifting well, use the instrument or test bench to find out Fault point and mark the fault point location. Article 2 For cables that need to be repaired, if the wire is broken or the copper wire of the core wire is broken by more than 15%, the core wire must be reconnected by cold pressing, and the crimping tube must be removed.“flash”, for insulation treatment and vulcanization heat compensation.
Article 3 For cables with damaged sheaths, in addition to vulcanization and hot repair, they can also be repaired by cold repair. Cable sheath repairs must be made of non-flammable materials. Article 4 When repairing the shielding rubber sleeve, the semiconductor shielding layer or the metal mesh shielding layer must be handled well to ensure the function of the shielding layer.
Article 5 For repaired shielded cables, the shielding layer must be tested; if the shielding layer is interrupted, the breaking point must be found and repaired again. Article 6 A loading test must be performed after the repair of the cable at the core wire joint; if the temperature of the repaired place exceeds the specified value, it must be repaired again. Article 7 The water immersion pressure test must be carried out after the cable that has been cold-compensated underground is lifted into the well.
If the temperature of the cold patch exceeds the specified value, it must be repaired and tested again. Article 8 After the cables used in the underground excavation face are withdrawn to the lifting well, they must be inspected and dried, and only after passing the water immersion test can they be released for use. Article 9 For cable repair, after passing the test, length measurement must be carried out. For cables with changes in length, they should be re-pressed and the data on the account card and drawing board should be changed.
Article 10 After passing the cable repair test, fill in the test sheet, and the cable management team will issue a certificate, and store it in the warehouse for use. Article 11 Clean the workplace before leaving work, remove sundries, and keep the workplace clean and hygienic. The above are the operating procedures for cable maintenance workers of Shenzhen Noyafa Electronic Technology Co., Ltd.
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