Dry-type transformers also require venting during operation, but the venting process for dry-type transformers differs from other types. It has its own specific procedures and operating methods. Generally, the common venting operations for dry-type transformers are as follows:
Dry-type transformer venting operation method:
Open the vent valve on the gas relay and the vent nozzle at the top of the waterproof bushing. Add oil to the transformer tank through the oil inlet pipe. When oil overflows from the vent valve, close the vent valve. When oil overflows from the vent nozzle at the top of the waterproof bushing, close the vent nozzle and record the total amount added. At this point, the transformer is full of oil. However, the battery in the transformer tank is overcharged. When the transformer is under load and the temperature rises, the oil volume expands, and the pressure inside the tank becomes too high, causing the corrugated sheets to expand excessively. If this exceeds their elastic deformation range, it will lead to permanent deformation.
Dry-type transformers need to be vented regularly to ensure their performance and function are optimal. If you have any further questions about venting dry-type transformers, please visit our website for more details!
