Consultation of high and low voltage integrated di

2022-08-19
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Hubei high and low voltage integrated distribution cabinet consultation

Hubei high and low voltage integrated distribution cabinet consultation

source network release time: 07:02:01

Hubei high and low voltage integrated distribution cabinet consultation

under the background of tight cobalt supply and rising prices, transformers can be divided into dry-type transformers and oil immersed transformers

employees engaged in complete equipment industry must do their own work well and establish the concept of civilized production. The process requirements in the daily production process are everywhere to improve the quality awareness and clarify that quality is the importance of the life of the enterprise. We should pay attention to work efficiency and create a good working environment, a comfortable working environment. In order to better improve work efficiency, we should also pay attention to the surrounding environmental sanitation, work at the same time on every day, and cooperate, respect and take care of each other among colleagues; In terms of technology, we should exchange experience with each other, constantly improve ourselves, develop good working habits of self inspection, mutual inspection and post inspection for the completion of work tasks, ensure quality and create better benefits for the enterprise. High reliability of dry-type transformer: improving the quality and reliability of dry-type transformer products has always been people's unremitting pursuit

at present, there are still many oil immersed transformers in terms of consumption. However, due to its environmental protection, flame retardancy, impact resistance and other advantages, dry transformer is often used in indoor and other places with high requirements for power supply and distribution, such as hotels, office buildings, high-rise buildings and so on. If you are just a transformer user, it should be enough to understand these. Each has its own advantages and disadvantages. The oil transformer has low cost and convenient maintenance, but it is flammable and explosive. Due to its good fire resistance, the dry transformer can be installed in the load center area to reduce voltage loss and power loss. However, the dry transformer is expensive, large in size, poor in moisture and dust resistance, and noisy. The oil transformer is gradually withdrawn, and the dry transformer is used. The dry transformer can be disassembled for transportation and defecation, which is clean and easy to maintain. The machine base is not required for installation, and there is no oil seepage pool 3. The capacity and voltage are different. Dry type transformers are generally suitable for power distribution. Most of them have a capacity of less than 1600KVA and a voltage of less than 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. Applicable places: dry-type transformers are mostly used in places that need fire prevention and explosion prevention, and are generally easy to be used in large buildings and high-rise buildings; Oil type transformers, which may cause fires due to oil spray or leakage after accidents, are mostly 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 much higher than that of oil transformers

transformers are easy to distinguish from each other in appearance; The biggest difference between oil immersed transformer and dry-type transformer is whether there is oil. Because oil is liquid and has fluidity, oil immersed transformer must have a shell. The inside of the shell is transformer oil, and the coil of the transformer is soaked in the oil, and the coil of the transformer cannot be seen from the outside; The dry-type transformer has no oil, so the shell is not needed, and the coil of the transformer can be seen directly; Another feature is that there is an oil conservator on the oil immersed transformer, and the transformer oil is stored inside, but now the new oil immersed transformer is also produced without an oil conservator; For the convenience of heat dissipation of oil immersed transformer, that is, the flow and heat dissipation of internal insulating oil, a radiator is designed outside, just like a heat sink, while the dry-type transformer does not have this radiator. The heat dissipation depends on the fan under the transformer coil, which is a little like the indoor unit of household air conditioner; Due to the need of fire prevention, oil immersed transformers are generally installed indoors or outdoors, while dry-type transformers must be installed indoors. Generally, they are installed in the low-voltage distribution room side by side with the low-voltage distribution cabinet

service conditions of box type substation: the low voltage room is divided into two assembly forms: corridor type and non corridor type. The indoor can be equipped with metering cabinet, main switch cabinet, outgoing cabinet, capacitor cabinet and contact cabinet (when there are two transformers), which has the overall function of low-voltage switchgear. 2. When replacing the indenter or anvil. Generally, the metering cabinet and the main switch cabinet are integrated, that is, the upper part of the cabinet is the instrument, the metering box, and the middle and lower part is the automatic air switch, lightning arrester, and transformer. The capacitor cabinet can be manually and automatically controlled for automatic compensation. The capacitance reactive power compensation capacity is generally% of the transformer capacity, and the compensation capacity can also be increased or reduced according to the needs of customers

transformers are easy to distinguish from each other in appearance; The biggest difference between oil immersed transformer and dry-type transformer is whether there is oil. Because oil is liquid and has fluidity, oil immersed transformer must have a shell. The inside of the shell is transformer oil, and the coil of the transformer is soaked in the oil, and the coil of the transformer cannot be seen from the outside; The dry-type transformer has no oil, so the shell is not needed, and the coil of the transformer can be seen directly; Another feature is that there is an oil conservator on the oil immersed transformer, and the transformer oil is stored inside, but now the new oil immersed transformer is also produced without an oil conservator; For the convenience of heat dissipation of oil immersed transformer, that is, the flow and heat dissipation of internal insulating oil, a radiator is designed outside, just like a heat sink, while the dry-type transformer does not have this radiator. The heat dissipation depends on the fan under the transformer coil, which is a little like the indoor unit of household air conditioner; Due to the need of fire prevention, oil immersed transformers are generally installed indoors or outdoors, while dry-type transformers must be installed indoors. Generally, they are installed in the low-voltage distribution room. With the low-voltage distribution, we clamp the sample (or product) cabinet side by side

certification of environmental protection characteristics of dry-type transformers: Based on the European standard HD464, carry out research and certification on the characteristics of climate resistance (C0, C1, C2), environment resistance (E0, E1, E2) and fire resistance (F0, F1, F2) of dry-type transformers

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