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Views: 0 Author: Site Editor Publish Time: 2021-12-31 Origin: Site
Oil sealed transformer is one of the important equipment in the power supply and distribution system of industrial and mining enterprises and civil buildings. It reduces the 10kV or 35kV network voltage to the 230/400V bus voltage utilized by the user. Oil sealed transformer device merchandise square measure appropriate for AC fifty (60) cycle per second, three-phase most rated capability 2500kVA (single-phase most rated capability 833kVA, single-phase electrical device is mostly not recommended). Next, let's take a look at the classification and selection of Oil sealed transformers. Here are some answers.
Here is the content list:
l Classification of Oil sealed transformer.
l The main points of selection of Oil sealed transformer.
Non-closed Oil sealed transformer device principally includes S8, S9, S10, and alternative series merchandise, that square measure wide employed in industrial and mining enterprises, agriculture, and civil buildings. Sealed Oil sealed transformer device principally includes S9, S9-M, S10-M, and alternative series merchandise, that square measure principally employed in places with plenty of oil and chemical substances within the fossil fuel and chemical industries. Sealed Oil sealed transformer device principally includes BS9, S9-, S10-, S11-MR, SH, SH12-M, and alternative series merchandise, which might be used for power distribution in varied places like industrial and mining enterprises, agriculture, and civil buildings. In addition, there are various special Oil sealed transformers for special purposes. For instance, high-voltage transformers for tests, transformers for electrical furnaces, transformers for electrical fastening and transformers employed in thyristor circuits, and voltage transformers and current transformers for mensuration instruments.
First, when there are a large number of primary or secondary loads, two or more Oil sealed transformers should be installed. When any one of the Oil sealed transformers is disconnected, the capacity of the remaining transformers can meet the power consumption of the primary and secondary loads. The first and secondary masses ought to be focused the maximum amount as doable, and may not be too scattered. Second, when the seasonal load capacity is large, a special transformer should be installed, such as the air-conditioning chiller load and heating electric heating load in large city buildings. Third, when the concentrated load is large, a dedicated Oil sealed transformer should be installed, such as large heating equipment, large X-ray machine, electric arc furnace, etc. Fourth, when the lighting load is large or when the power and lighting use a shared Oil sealed transformer, which seriously affects the lighting quality and bulb life, a special lighting transformer can be installed. Under normal circumstances, power and lighting share a transformer.
Oil sealed transformer maintains long-term stability at 220℃. It can withstand short-term operation at 350°C. Maintain stable performance in a wide range of temperatures and humidity. Oil sealed transformer will not melt, flow and support combustion at a temperature of 250°C. At a temperature of 750°C, no toxic or corrosive gas will be released.
The capacity of the Oil sealed transformer should be integrated with the facility capacity of various electrical equipment to calculate the calculated load (generally excluding the fire load). The apparent capacity after compensation is the basis for selecting the capacity and number of the Oil sealed transformer. The load rate of a general transformer is about 85%. This method is relatively simple and can be used to estimate capacity.
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