Insulation Groups to VDE 0110
This standard provides classification of equipment dependant upon
its application and the performance of its insulation. The classification
takes into account environmental factors such as dust, dirt, humidity
and condensation that may affect the insulation. It also considers
the affects of ageing.
The classification also takes into account the effects of damage resulting
from failure of the insulation's performance and of flashover voltages.
||Low powered equipment sited in air conditioned or a clean and
dry environment or otherwise protected in a suitable manner.
A short circuit will not cause excessive overheating.
||Equipment sited in air conditioned or a clean and dry environment
and suitably protected.
||Equipment housed in living rooms, offices, stores and similar
premises. This includes laboratories, medical rooms, control rooms
and precision engineering workshops.
||Equipment used in commercial, industrial or agricultural workshops
and unheated stores. This includes plant rooms & boiler houses
and also includes equipment fitted to machine tools.
||Equipment fitted to vehicles and rolling stock and thus exposed
to damp conditions including condensation, rain and melting snow.
Conductive dust (such as from unenclosed braking mechanisms) is
another hazard covered by this classification.