High Voltage Insulation Materials
according to generally as the points, solid insulation materials commonly used in pipe insulation, laminates, insulation film, insulation paper, rubber, plastics, glass, ceramics, mica, etc.; liquid materials are insulating paint, glue, resin, transformer oil, and the liquid material is often a pre-semi solid material; material with nitrogen gas, sulfur hexafluoride.
Classification according to degree of heat is one of the most professional classification;Insulation material is divided into A, E, B, F, H, C and other levels, each corresponding temperature heat levels as follows
Class A insulation — temperature 105 ℃,
Class E insulation — temperature 120 ℃,
Class B insulation — temperature 130 ℃,
Class F insulation — temperature 155 ℃,
Class H insulation — temperature 180 ℃,
Class C insulation — temperature above 200 ℃
Class E insulation — temperature 120 ℃,
Class B insulation — temperature 130 ℃,
Class F insulation — temperature 155 ℃,
Class H insulation — temperature 180 ℃,
Class C insulation — temperature above 200 ℃
Insulation performance and stability of insulation materials will get worse, If the temperature get higher. To ensure the insulation strength, each insulating material has a proper maximum allowable operating temperature. At this temperature insulation materials can be safely used long term, it is easy to exceed this temperature aging destruction.
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