Dry type transformer can display temperature in general, and the temperature is also rising with the efficiency and speed of dry-type transformer operation. The temperature adjustment of dry-type transformer is mainly adjusted by temperature controller. Generally, the temperature of dry-type transformer is not displayed because the temperature controller is broken, so it is necessary to repair it and carefully check the relevant information The reason for that. The temperature of dry-type transformer is as follows:
The national standard dry type transformer gb6450-1986 specifies the temperature rise limit of dry type transformer
1. For dry-type transformer coil:
a. When class a insulating material is used, the temperature rise of ^ * * should be less than 60K at 105 ℃;
b. When class E insulating material is used, the temperature rise of × * * should be less than 75K at 120 ℃;
c. When class B insulating material is used, the temperature rise of ^ * * should be less than 80K at 130 ℃;
d. When F-class insulating material is used, the temperature rise of ^ * * should be less than 100k at 155 ℃;
e. When the H-class insulating material is used, the temperature rise of * * should be less than 125k at 180 ℃;
f. When class C insulating material is used, the temperature rise of ∪ should be less than 150k when the limiting working temperature is 220 ℃.
2. Under no circumstances shall the iron core, metal parts and materials adjacent to them be exposed to temperature that will damage the iron core itself, other parts or materials adjacent to them. At present, most dry-type transformers are made of H-class insulating materials, so generally speaking, the temperature of dry-type transformer should be below 180 ℃.
The above is the main reason why the temperature of dry-type transformer is not displayed and the main provisions of temperature for your reference. If you have any other questions and problems about dry-type transformer, please log in to our website to understand!
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