Application Status of Dry-Type Transformers

Since dry-type transformers do not have oil, there will be no fire, explosion, pollution and other problems. Therefore, electrical specifications and regulations do not require dry-type transformers to be placed in a separate room. Losses and noise have been reduced to a new level, creating conditions for the transformer and low-voltage panel to be placed in the same distribution room.
As an important equipment of the offshore oil platform power system, the safe and reliable operation of dry-type transformers is the key to the operation of the power system. Dry-type transformers are prone to local insulation discharge and local overheating in the humid salt fog marine environment. The application of dry-type transformer online monitoring system can effectively realize online monitoring of transformer status and ensure the stable operation of offshore oil platform power system.
China's annual output of resin-insulated dry-type transformers has reached 10,000MVA, making it one of the countries with the largest production and sales of dry-type transformers in the world. Dry-type transformers are now widely used in almost all electrical equipment such as power stations, factories, and hospitals. With the promotion and application of the low-noise (noise of distribution transformers below 2500kVA has been controlled within 50dB) and energy-saving (no-load loss is reduced by 25%) SC (B) 9 series, the performance indicators and manufacturing technology of China's dry-type transformers have reached the world's advanced level.