Dry-type Transformers Should Meet The Requirements

a) When the transformer and the low-voltage distribution cabinet are installed in parallel, the protection grade of the shell is not lower than IP3X, and when installed separately, the protection grade is not lower than IP2X.
b) There are no traces of spark discharge on the surface of the iron core and casing.
c) There is no damage or cracks on the outside of the casing and insulator.
d) The transformer winding cast body is free of cracks and dirt.
e) There is no serious dirt accumulation on the surface of the iron core and casing.
f) The transformer sound is normal.