MESSKO® MTraB®

The principle of operation: simple and effective

Messko’s MTraB® maintenance-free dehydrating breather minimizes the ingress of moisture into the insulation liquid of transformers, on-load tap-changers and other electrical equipment filled with insulation liquids.
MTraB® is the ideal solution to the continuously increasing demands on quality and the reduction of life cycle costs of transformers and equipment.

Unlike conventional dehydrating breathers filled with silica gel or similar desiccants the silica gel in the silica gel chamber of Messko’s MTraB® is dehydrated by a sensor-controlled heater element that is installed. This minimizes the visual inspections, and the expensive, regular replacement of the drying agent is no longer necessary.
Many power companies have started retrofit programs and are replacing conventional dehydrating breathers with the Messko MTraB®. The MTraB® is the perfect solution for these retrofit projects, because it is available in many different flange designs. 

All MTraB® highlights at a glance

With more than serveral tens of thousends installed units since its introduction to the market in 2003, the MTraB^® dehydrating breather is contributing to the significant reduction of the life cycle costs for many customers around the world.

In addition, a transformer’s total operating reliability is increased since there is no more risk of moisture penetration if the conventional dehydrating breather is replaced too late. 

The right MTraB® type for every application

The following application table helps you to determine the appropriate MTraB® type with adjusted controller (α, β and γ) for use on your transformer.

α-controller: Recommended for use on on-load tap-changers, arc suppression coils and traction transformers. The dehydrating breather is only heated when needed (its state is monitored for hydration).

β-controller: Self-learning system which is recommended for use on transformers with cyclical loads (see table of applications). In addition to monitoring the hydration, a time window is determined during which the oil conservator exhales, and the dehydrating chambers are regenerated.

γ-controller: Recommended for special applications such as cavern transformers, furnace transformers and GSU transformers with non-periodical breathing behaviour.
If the moisture content of the air flowing in the direction of the transformer exceeds a specified value, the silica gel chambers are regenerated in sequence.