The cleaning method of the copper cutting machine is hot oil cleaning. Because of the long-term use, the bearing hardened by soft dry oil or anti-rust paste, clamp the bearing with pliers, and use a brush to clean the oil on the bearing. It is easy to wash in through the gap of the bearing. Sometimes it is only necessary to swing the bearing repeatedly in the oil. The oil will also flow away from the crevices. When cleaning the centripetal spherical bearing of the old busbar motor or imported motor, the balls, the bead frame, and the inner ring should be rotated laterally from the outer ring and then immersed in hot oil. The short cylindrical roller bearing should also be cleaned. Disconnect the rollers, bead holder, inner ring and outer ring. During hot oil cleaning, the temperature of the oil should not exceed 20°C. If you use an open flame to heat directly, you should pay attention to avoid burning the oil. The bearing should be hung in the oil pan. The sinking bottom will cause overheating and reduce the hardness. How to deal with the copper cutting machine in time after damp. Summary: Mainly introduce the safety operation of large power transformers due to the shortcomings of insulation coordination, as well as the analysis and prevention of insulation accidents.

 Sudden damp accidents refer to accidents caused by splashing into the jelly bus processing machine or sucking in water. There are the following situations: the casing "general cap" is not tightly sealed, and the sucked water seeps into the coil along the high-voltage outlet line, causing it The high-voltage coil in the middle part of the wire is short-circuited between turns; when the vacuum is pumped, water is hit on the coil, and when the oil is filled, the water is washed on the coil, causing the coil to burn. Sudden damp dampness The whole insulation is damp, and as the oil circulates, the moisture accumulates to a certain extent in the insulation, causing an accident. Causes a ring-shaped discharge; the residual silica gel at the largest electric field will transfer to the turn insulation after absorbing water, which will cause the turn insulation to be locally damp, causing a short circuit between the turns. In short, when analyzing normal insulation accidents, the first thing to think about is insulation damp. Because the normal working voltage is very high, in addition to moisture, there are few elements that damage the insulation, which can make the withstand strength of the insulation unable to withstand the strength of the normal working voltage.

 Normal oil paper is extremely high. Under normal operating voltage, it is impossible for the turn insulation to wear accidents; but the theoretical situation is that the possibility of transformer winding insulation accidents is due to the burning of the oil paper ring; the water cooler leaks. Causes the coil to burn out; the positioning nail rubber gasket on the top cover of the fuel tank is not tightly sealed, and the coil is burned; when the water is poured on the coil during installation, the transformer is damp during transportation, and the CNC copper bending machine is not found. The accumulated water was not washed away before, and the oil was injected from the upper part. The water mixed with the oil and poured on the body, causing insulation breakdown; the accumulated water in the oil storage tank was too low and decreased. The insulation of the portable bus bar processing machine can be divided into water inrush, which has great affinity, and its insulation strength will drop linearly after being damp.