| Insulation and winding |
Usually motors are equipped with F Class insulation, for which
standards let for 105oK temperature increase (because of overload).
In outside environment if temperatutr is not higher than 40oC
and heigth is 1000m
- Impregnation is made of high quality resin – Class H (whole
180oC). Due to this winding is resistant against moisture
and high temperature.
- Wires made of copper, Class H insulation are covered with
polyester enamel, that increases more the termal winding safety
Caution: Motors can incessantly work even if voltage differs
from the nominal by 5%, but the frequency must be the same as
nominal.
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