Tips of Transformer Maintenance, Online Recycling Transformer Oil

CHONGQING, China - April 28, 2022 - PRLog -- Tips of Transformer Maintenance Schedule

Transformer is an extremely important electrical equipment in the power transmission system,but due to various reasons, it sometimes fails during operation. According to the nature of maintenance work, transformer maintenance is divided into major repairs and minor repairs. It is customary for oil-immersed transformers to be overhauled if they need to discharge the oil hanging core (or lift the bell jar) for maintenance; Carrying out oil treatment is called minor repairs.

1.General process of transformer maintenance schedule
a. Clean the casing and check the porcelain casing for discharge damage;
b. Check whether the fastening bolts at the top of the casing are loose or overheated;
c. Clean accessories such as transformer oil tank and oil conservator, safety air passage and pressure regulating device;
d. Check the dust and other debris deposited in the cover of the pressure relief valve;
e. Check whether the oil level of the oil conservator is normal, whether the oil level gauge is in good condition and clean, and discharge the oil in the sewage collection basin;
f. Check the respirator and replace the desiccant that fails and changes color;
g. Supplement the insulating oil of the transformer body and the oil-filled bushing;
h. Check whether the radiator has oil leakage and whether the cooling fan is normal;
i. Check oil temperature of the upper layer;
j. Check whether the gas relay has oil leakage, whether the valve opening and closing is flexible and reliable, and whether the insulation of the control cable is good;
k. Check the grounding wire of the transformer shell and the neutral point grounding device;
l. Check the operation control circuit of the on-load tap-changer, the transmission part and its contact action, and clean the inside of the operation box;
m. Take oil samples from the transformer body and oil-filled bushings for testing, and take oil samples from the transformer body and capacitive bushings for chromatographic analysis;
n. Deal with defects such as seepage and oil leakage that can be done on site;
o. Carry out electrical tests for specified items.

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