1. How to prevent the transformer from getting damp: Transformers are high-voltage equipment and require good insulation properties. Oil-immersed transformers are easily affected by moisture. Moisture prevention is one of the main measures to protect and maintain transformers. The transformer should be equipped with a moisture absorber as soon as it arrives on site to protect the internal body from moisture. Monitor the silica gel in the moisture absorber and replace it if it gets wet. The silica gel in the moisture-absorbing device absorbs moisture and protects the transformer. After absorbing moisture, the color of the silica gel changes, and it is necessary to replace it with new dry silica gel.
2. Prevent oil leakage: Oil-immersed transformers fill the oil tank with transformer oil, and the assembly relies on fasteners to pressurize and seal the oil-resistant rubber parts. Loose sealing is the main cause of transformer oil leakage, so special attention should be paid to protection and maintenance. Small bolts become loose through vibration. If they are loose, they should be tightened. The tightening degree should be appropriate and consistent everywhere. Whether the rubber is cracked or severely deformed. At this time, when replacing renewable rubber parts, pay attention to whether the model specifications are consistent and keep the sealing surface clean.
When ordering, attention must be paid to minimizing the storage time of the transformer before leaving the factory. After the transformer is produced, it is easily affected by moisture during storage. Therefore, a good plan should be arranged to shorten the storage time as much as possible. The oil in the oil pillow is easily affected by moisture, and the oil pillow accumulates water. The oil in the transformer oil conservator has been seriously affected by moisture and has been stored without power for more than 6 months or operated for more than 1 year. If you want to carry out operations such as lifting and transportation, maintenance and refueling, draining oil from oil valves, lifting and coring, etc., you should first release the dirty oil in the oil pillow through the oil drain plug under the oil pillow, and wipe and seal it with a dry cloth to avoid Dirty oil in the oil pillow enters the fuel tank
3. Oil-immersed power transformer oil change and boring treatment: If the transformer has been idle for too long, has been running for too long, or other natural and man-made factors have caused the insulation of the transformer to decline and the internal water or oil to deteriorate, the transformer must be changed for oil and boring. hole treatment.
Oil-immersed power transformer oil change: first lift out the box, release the dirty oil and clean the box. The oil in the box should also be flushed. After the valve body is dry, inject new oil and replace all oil-resistant rubber seals. It can be put into operation after passing the test. For transformers with a larger capacity and voltage of 35kv, it is recommended to send them to the local power manufacturer for vacuum drying. This can ensure that the transformer insulation is dry and prevents the insulation from aging.
| oil immersed type transformer |
| Oil Type Transformers |
