Air dehumidifier SVS-20D

Designed to dry the air that enters the transformer expander during operation.
Completely replace models:

MTRAB® 2.5-type DB200D
Qualitrol STB-200

Product description

SVS is maintenance-free as it regenerates silica gel automatically through heating


The design of SVS intelligent Air Dehumidifier is protected by a patent. Beware of fakes, buy original units from a reliable manufacturer.

Operating principle

The air entering the transformer expander passes through the silica gel in the unit and is dried. The silica gel is saturated with moisture during operation. The construction of the device allows the adsorber to return to its original characteristics in automatic mode (drying). It consists of two identical silica gel parts.

Specially designed for use in climates with high atmospheric humidity: While one silica gel part is running, the other part is drying.

The drying mode is activated as the moisture in the silica gel increases, at the moment the transformer exhales


  • Silica gel mass 5.2 kg
  • Power up to 900W
  • Suitable for oil-immersed power transformers rated well above 40MW*A or areas with high air humidity

The best manufacturer price

Tight production times

Quality guarantee up to 5 years

Delivery anywhere in the world

Customisation and equipment options

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Завод «АTF»
Россия, Тольятти, Коммунальная улица, 16
+7 (800) 200-63-18