Environmental, Climatic
and Fire resistance
characteristics of Cast
Resin Transformers.
The regulation identifies the classes
with an alpha-numeric code. In detail
the Environmental as E 0, E 1, E 2, E 3;
the Climatic as C 1 or C 2, and the Fire
Resistance with F 0 or F 1, where this is
sometime comparable with alternative
testing carried-out by UL laboratories.
Our Customers, with Elan-tron® resins,
have passed the homologation E 3, C 2, F 1
which means: E 3 - a transformer, placed
into a climatic chamber with control of
humidity and temperature to guarantee
a condensation, is tested with several
electric modes: no flash over shall occur
and no tracking shall be observed by visual
inspection; C 2 - operating temperature,
transport and storage down to – 25°C; F 1
- the transformer, subjected to fire risk,
in the burning test has self-extinguishing
capability within a stated time.
A Cast Resin Transformer must be identified
with all of the three classes.