As a part of power line, industrial cable is widely used because of its low probability of failure, safety and reliability, and flexible outlet. But once out of order, maintenance is difficult and dangerous, so special attention should be paid to maintenance and test.
1. The first type of work ticket should be used for power cable power outage work, and the second type of work ticket should be used for work without power outage. Before work, the relevant path diagram, arrangement diagram and concealed engineering drawings should be reviewed in detail. The cable name and label must be checked in detail to see if it is consistent with the work ticket. The work can be started only after the safety measures are correct and reliable.
2. Precautions during work Confirm the cables to be repaired during work. Cables to be repaired can be divided into two types:
(1) cable with terminal head fault and obvious fault point on the surface of cable body. This kind of fault cable, fault signs are more obvious, easy to confirm.
(2) Lub cable tsis muaj qhov yuam kev tshwm sim ntawm qhov chaw cable.
Rau hom kev txhaum cable, ntxiv rau txhawm rau txheeb xyuas cov ntaub ntawv, txheeb xyuas lub npe cable, tab sis kuj yuav tsum tau txheeb xyuas nrog cov ntaub ntawv qhia txog cable, kom tag nrho thiab lwm yam nyob hauv cable hauv kev ua haujlwm kom paub qhov txawv, tshwj xeeb tshaj yog nyob rau hauv tib seem muaj ntau. cables, nruj me ntsis paub qhov txawv ntawm cable tu thiab lwm yam nyob cable yog qhov tseem ceeb tshwj xeeb.
At the same time, this can also effectively prevent the cable nameplate hanging wrong and mistaken cable, resulting in the occurrence of live cable accidents. Sawing cable must have reliable safety protection measures.
Ua ntej sawing lub cable, nws yuav tsum tau paub tseeb tias nws yog lub cable yuav tsum tau txiav thiab lub cable tsis yog hluav taws xob. Tom qab ntawd, siv lub ntiaj teb hlau laum nrog ntoo kov (nyiam dua epoxy resin kov) txhawm rau ntsia hlau cov tub ntxhais ua ntej ua haujlwm.
The person holding the wooden handle should wear insulating gloves and stand on the insulating mat. Special attention should be paid to ensure that the iron bar is well grounded. If you need to move cables during work, be careful not to act recklessly to prevent damage to other cables in operation.
Cable end must be installed according to the process requirements, to ensure quality, no accident hidden danger. After cable repair, should carefully check the phase at both ends of the cable, first remove the original phase color mark, and then put on the correct phase color mark, in order to prevent the old and new phase color confusion.
3. Matters needing attention during high voltage test Cable high voltage test shall strictly abide by "Electrical Industry Safety Work Regulations". Even in the case of poor working conditions on site, the requirements for safety can not be reduced.
