Requirements for use in plateau environment of dry-type transformers

Dry-type transformers need to make many temperature regulations when operating. There are certain standards for the temperature rise of dry-type transformers. There are relevant regulations for the temperature rise of dry-type transformers. The temperature rise of dry-type transformers. Wen Sheng's country has also formulated strict standards. This standard is designed according to industry standards. How is it specifically stipulated?

The national standard "Dry-type Transformer" GB6450-1986 stipulates the temperature rise limit of dry-type transformers.
1. For the coils of dry-type transformers, when Class A insulation materials are used, when the ultimate operating temperature is 105°C, the maximum temperature rise should be less than 60K; when Class E insulation materials are used, when the ultimate operating temperature is 120°C, The maximum temperature rise should be less than 75K; when Class B insulation material is used, the maximum temperature rise should be less than 80K when the ultimate operating temperature is 130℃; when Class F insulation material is used, when the maximum operating temperature is 155℃, the maximum temperature rise The temperature rise should be less than 100K; when Class H insulation material is used, the maximum temperature rise should be less than 125K when the ultimate operating temperature is 180℃; when Class C insulation material is used, when the maximum operating temperature is 220℃, the maximum temperature rise should be Less than 150K. 2. The iron core, metal parts and materials adjacent to them will not, under any circumstances, reach temperatures that would damage the core itself, other components or materials adjacent to them.

Most dry-type transformers now use H-class insulation materials, so generally the temperature of dry-type transformers should be below 180°C.