Is the transformer dry-type or oil immersed?
Writer： Hengfeng you electric Time：2023-03-27 views：times
Whether to choose oil immersed transformer or dry-type transformer mainly depends on the needs of users and the actual situation. Generally speaking, dry-type transformer and oil immersed transformer are mainly due to the different cooling methods of power transformer. The cooling method of dry-type transformer adopts air cooling, and the cooling method of oil immersed transformer usually adopts one of oil immersed self cooling, oil immersed air cooling and forced oil circulation.
Dry type transformers are suitable for places with high fire prevention requirements, such as residential buildings, office buildings, offices, parking lots, stations, schools and other places. The oil immersed transformer is mainly suitable for outdoor places with relatively harsh environment, such as places requiring waterproof, poles, outdoor and other places. Therefore, if you need to install transformers in the community, you have low requirements for the waterproof of transformers and high requirements for the noise of transformers. At this time, it is more reasonable to choose dry-type transformers. If the transformer needs to be installed on the outdoor pole as the street lamp lighting transformer, it is necessary to choose the oil immersed transformer.
Next, let's look at the difference between dry-type transformer and oil immersed transformer. The biggest difference is whether there is oil in the transformer.
1. From the appearance, the packaging forms are different. The dry-type transformer can directly see the iron core and coil, while the oil type transformer can only see the shell of the transformer;
2. Lead forms are different. Most dry-type transformers use silicone rubber bushing, while most oil transformers use porcelain bushing;
3. The capacity and voltage are different. Dry type transformers are generally suitable for power distribution. Most of them have a capacity below 1600KVA and a voltage below 10kV, and some of them have a voltage level of 35kV; But the oil transformer can achieve all the capacity from small to large, and the voltage level can also achieve all the voltages; The UHV 1000kV test line under construction in China must be oil type transformer.
4. Insulation and heat dissipation are different. Dry type transformers are generally insulated with resin, which is cooled by natural air, and large capacity is cooled by fans. Oil type transformers are insulated by insulating oil, which circulates inside the transformer to transfer the heat produced by the coil to the radiator (fin) of the transformer for heat dissipation.
5. In terms of application places, dry-type transformers are mostly used in places that need "fire prevention and explosion prevention", which are generally easy to be used in large-scale buildings and high-rise buildings; However, oil type transformers may be sprayed or leaked after being discharged, which may cause fires. Most of them are used outdoors, and there are places where accident oil pools are dug.
6. The load bearing capacity is different. Generally, dry-type transformers should operate under the rated capacity, while oil type transformers have better overload capacity. 7. The cost is different. For transformers with the same capacity, the purchase price of dry-type transformers is higher than that of oil type transformers.
The damage of oil immersed transformer should be noise damage. If you have experienced good friends, you will still grasp it. The noise in the oil immersed transformer room may be very large, especially in the dry oil test immersed experience transformer in the civil electric transformer room, which is very loud, especially at night;
The second damage that the oil immersed transformer is likely to cause is the electrical radiation hazard. In fact, the radiation hazard of the oil immersed transformer is not too great. According to the shielding layer of anti ionizing radiation safety protection, the radiation hazard of the oil immersed transformer is mostly absent, unless it is always standing on the side of the oil immersed transformer and touching it closely, Oil immersed transformers in small areas generally have independent oil transformer rooms, which can completely shield the damage of radioactive elements;
From the difference between the adjustable regulated power supply and the oil immersed experience transformer, only from the word meaning, the adjustable regulated power supply is a household appliance that stabilizes the fluctuating working voltage to the preset value, and the output working standard voltage is not easy to fluctuate greatly. The oil immersed transformer belongs to an electronic component, which converts the working standard voltage according to the magnetic induction electromagnetic coil. Oil immersed transformer has the function of elevator car pressure in the circuit.
The oil immersed transformer is used to convert the AC working standard voltage for communication, and its application field is very common. It can be said that all electronic equipment cannot be separated from it if the 380V working standard voltage is applied. The adjustable regulated power supply is used to stabilize the 380V working standard voltage, to avoid damage to household appliances caused by slightly lower or higher working standard voltage, and to be used for machinery with very high demand for working standard voltage or areas with unstable working standard voltage.
The above is hengfengyou's specific explanation on whether to choose dry-type or oil immersed transformers. For more information, you can contact our business. Our factory focuses on the production and manufacturing of substations and has been sold to the American market in 2018.
American box type transformer, American transformer and base plate transformer are customized. It has 30 years of production experience in the global power market. Hengfengyou Electric will provide you with the best American box transformer product solutions. Hengfengyou electric provides you with the best electrical product solutions. 【WhatsApp:+86158 5325 2696（Jack）+86158 5326 5269（Alisa） info@hengfengyou.com https://www.hengfengyou.com 】
