Troubleshooting of short circuits in lighting lines
The short-circuit fault is obvious, and the burn carbonization line is burned, and the cause can be replaced only after the cause is investigated, otherwise it will lead to a big disaster;
The wiring is loose and the burr is messy, the two are too close to the zero line, rewiring is the key, the line aging is general, the man-made short circuit should be dealt with strictly, and the natural evil causes many trunks.
The general phenomenon of short-circuit fault is obvious, for example, the fuse of the fuse is blowing, and there are obvious burn and blackening marks at the short-circuit; insulation carbonization; The wire is visibly scorched, and the peeling is long and even the copper wire is exposed. When there is a short circuit fault, it is not only possible to replace the fuse or burned circuit, but also to find out the cause of the damage, otherwise it will cause more serious consequences.
First check the regularity of the wiring, for example, loose wiring; When the two wires touch, there is a burr and a short circuit. It should be mainly checked whether the wiring is crimped firmly, and the distance between the phase wire and the neutral line is too close. If the above fault location is found, the wiring should be rewired, or the existing line should be sorted out and repaired. If the line is aging, it will cause the insulation ability of the line to the ground to be reduced, and the insulation on the surface of the line will be broken by long-term power and heating, and the short circuit to the ground will be caused. If no abnormality is found, you can check whether the power distribution equipment is damaged by itself, if there is a short circuit in the power distribution equipment, it will cause **, and the equipment will be deformed or fully damaged. As long as a person is in the vicinity of the equipment, the fault can be quickly detected, because the fault is accompanied by a serious burning odor.
There are also human factors for short circuits, such as building construction, accidentally touching overhead lines or digging up cables to short circuits to the ground. In the case of bad weather, it can cause a transient short circuit, such as a damaged tree trunk touching an overhead line, or a short circuit caused by debris falling on the ground and phase lines on a windy day.