Insulation Classes

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Transformer insulation classes are as below table:

Class	Acceptable max Temp. (Nominal Load)	Acceptable max overheat temperature average
Class	Acceptable max Temp. (Nominal Load)	Nom. Load	Short Cir.
E	120 C	75 C	135 C
B	130 C	80 C	145 C
F	155 C	100 C	170 C
H	180 C	135 C	200 C

Tags: transformer, temperature, insulation, class

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