In many special scenarios, dry-type transformers are a prohibitive choice for oil-immersed transformers. In underground places, such as underground stations, it can be hidden in the platform walls of the sandwich; in high-risk environments, such as chemical plants, coal mine shafts, to avoid the dangers of oil vapour explosions; in the precision equipment next to, such as data centres, laboratories, to prevent oil corrosion of the equipment; in the frequent starting and stopping places, such as lift rooms, it is strong shock resistance can also be given full play to its characteristics.
However, dry-type transformer is not everything, just like people are not perfect. Dry-type transformer capacity limitations exist, generally only to do 2500kVA below, and then large heat dissipation will become difficult, and oil-immersed easily to do 100,000kVA; afraid of dust, dust accumulates in the coil gap will affect the heat dissipation, the need for regular vacuuming; forced-air-cooled fan running noise, about 60 dB, similar to indoor conversations; the price of oil-immersed than the same capacity of 30% - 50% more expensive, mainly epoxy resin and copper, the price is higher than the same capacity. Mainly epoxy resin and copper cost is high.
In fact, dry-type transformer is not far from our lives. The miniature transformers in mobile phone chargers, old-fashioned fluorescent lamp ballasts, and even inside Tesla car charging piles, all use the principle of dry-type transformers. Dry-type transformers are like 'vegetarians' in the power system - they do not use oil, are low-polluting, and can be adapted to special environments, but they do not have as much capacity as 'carnivorous' transformers. 'Meat' oil-immersed transformers. Next time you see a grey iron cabinet on the wall in a hospital or underground station, there may be a dry-type transformer working silently!
If you need a dry-type transformer, you can contact us, we sell epoxy resin transformer, resin transformer, explosion proof transformer and other kinds of transformers.