昆明干式变压器：昆明干式变压器介电材料

昆明干式变压器介电材料 　　
世界范围内的大多数昆明干式变压器均为油浸式昆明干式变压器，其所用油为矿物油，符合IEC296.在英国，相应的技术规定是英国标准148《昆明干式变压器和昆明干式变压器装置用新矿物绝缘油》，该标准的1984年版本在某些方面和IEC296不同。关于这一点以下将做详细论述。矿物油在昆明干传 真：0635-8888109式变压器中有两个作用，一是绝缘，而是冷却，即带走昆明干式变压器损耗所造成的热量。
矿物油是可燃液体，它的燃点为170℃，有时昆明干式变压器确实会发生火灾。因此，通常将昆明干式变压器安装到户外，即使发生火灾也容易处理，相应的危险性也较小。必须考虑将昆明干式变压器与其他设备隔离，并且要采取相应防火措施。
由于火灾与矿物油有关，因此对于小型昆明干式变压器，实际上已采用不含矿物油的设计。小型昆明干式变压器可做成完全干式，用空气绝缘。或注入难燃液体或低燃性液体。
为了区分油浸式昆明干式变压器和昆明干式变压器两种主要类型的昆明干式变压器特点，在此有必要提出“介电材料”这一概念

Dielectric material
Most world-wide oil-immersed power transformers are transformers, its oil is mineral oil , in line with IEC296. In the UK, the corresponding technical requirement is British Standard 148 " transformers and switchgear with new mineral insulating oil" , the standard version 1984 and IEC296 different in some respects . On this point the following will be discussed in detail . Mineral oil in the transformer has two roles , one insulation, but cooling , the transformer losses caused away heat.
Mineral oil is a flammable liquid , and its ignition point 170 ℃, and sometimes do occur transformer fire. So it is usually mounted to the outside of the transformer , can be handled easily even in the event of fire , the corresponding risk is also small. Must consider the isolation transformer and other equipment , and to take appropriate fire safety measures.
As with mineral oil on the fire , so for small transformers, in fact, has used mineral oil-free design. Small transformers can be made completely dry , with air insulation. Injecting a liquid or a low flame or flammable liquids.
In order to distinguish oil-immersed transformers and dry- type transformers are two main types of transformer characteristics , it is necessary here that " the dielectric material " concept

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