Bushing insulators and accessories for power and distribution transformers

Air dehumidifiers are used in oil insulated transformers and have the function to absorb air humidity which has been sucked by the conservator during thermal contraction of the insulating liquid.
We manufacture a wide range of air dehumidifiers on the basis of the quantity of oil contained in the transformer and the drying material, called silica gel, contained in the air dehumidifier. The table below shows the different types.
Please contact our Sales Department in case you need further information and/or catalogues.

TYPE - OIL (Ton)

1-2 / 0÷8
3-4 / 8÷20
5-6 / 20÷60
7-8 / >60


New SDB-30 maintenance free air breather

Comem developed the SDB-30 maintenance free air breather with the goal of achieving three important aims:

low environmental impact

reduction of maintenance costs

greater control of the drying function and consequently higher safety of the transformer itself
Get in touch with our Sales Dept. to have further information