When on-site repairs are requiredDisinfection cabinet transformerWhen the lead welding is not good, heat insulation and isolation measures should be taken.
Repair welding can be performed to reduce small leakage of oil-filled transformers.
Disinfection cabinet transformerThe top of the should have an opening.
The welding part must be below the oil level.
Fire welding is strictly prohibited and intermittent electric welding shall be used.
The oil around the welding spot should be cleaned.
Appropriate safety and fire prevention measures should be taken, and the participant's safety technology should be explained.
Before drying the transformer, safety technical measures and necessary management systems should be established.
The power supply and wires of the drying transformer should be calculated, and there should be an overload automatic cut-off device and an overheat alarm device in the circuit.
DryingDisinfection cabinet transformerA thermometer should be installed on the iron core, winding or upper oil surface according to the drying method, but mercury thermometers are strictly prohibited.
DryingDisinfection cabinet transformerOn-duty personnel shall be provided. The personnel on duty should regularly check the temperature of each part, check whether there is overheating and abnormal conditions, and make records. The personnel on duty shall not leave the drying site without authorization.
When using short-circuit drying, the short-circuit line should be firmly connected. When using eddy current drying, insulated wires should be used. When using bare wires, a low-voltage power supply must be used, and reliable insulation measures should be taken.
When drying with an external power supply, the transformer enclosure shall be earthed.
When using vacuum hot oil circulation for drying, the housing and the windings on both sides must be reliably grounded.
Do not dry.Disinfection cabinet transformerFlammable materials shall be placed on site and adequate fire fighting equipment shall be prepared.
1.During the installation of power transformers, experienced equipment installers should be on site to direct.
2.Non-construction personnel shall not enter the operation area.
3.During construction at night, the work area should have good lighting.