Preventive measures for distribution transformers

The reasons of distribution transformer burning are many, I think the vast majority of distribution transformers can be through the staff responsible work, timely elimination of defects, transformer burning accident can be avoided.

Inspect transformer regularly, usually once a quarter, in the season of heavy load should increase the number of inspection Tours, once a month; When necessary, special patrols should be made on rainy, snowy, foggy days and at night.

Whether the oil level is in the standard position, whether the oil color is yellow, clear and bright, when the oil level is lower than the normal range, oil should be added in time, there is no leakage of oil in each part, there is no foreign matter on the transformer.

The casing shall be clean and free from damage, crack and discharge traces.

Lead and conductive rod connection whether fever discoloration, rain and fog days without discharge phenomenon, night patrol without redness phenomenon. Whether the grounding wire of the lightning protection device is stolen, discover and deal with the defects in time.

Select qualified connection equipment, copper wire with copper nose crimping, copper and aluminum wire transition with copper and aluminum transition nose or wire clip, increase the contact surface, daub conductive paste, reduce contact resistance, avoid contact heating oxidation.

Regular and irregular monitoring of transformer phase load current, timely deployment of each phase load, so that three-phase load balance as far as possible, overload should control load distribution, load balance, as far as possible to reduce the peak and trough load difference or increase the transformer capacity, avoid transformer partial load, overload operation. For the long-term over-load operation of the distribution transformer capacity should be timely to prevent the transformer from burning. The erection of low-voltage lines must be carried out in accordance with the requirements of relevant technical regulations to ensure the quality of construction and strictly perform the project acceptance procedures.

Do a good job in the spring transformer shake and preventive test, regularly check whether the grounding is good, grounding used for the lead whether broken strand, fracture and other phenomena. According to the requirements of the regulation of distribution transformer periodic test, in order to timely find defects, timely treatment or rotation repair, to avoid the transformer with disease operation and burn.