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Transformer Breathers

The failure or malfunction of many transformers or similar equipments can be directly attributed to the lack of proper control of the level of water vapour entering the equipment. It is essential, therefore, that a very low level of humidity is maintained in the air space in the top of the conservator tank to avoid deterioration of the insulating properties of the cooling medium. Transformer Breathers provide an economic and efficient means of controlling the level of moisture entering the conservator tank during the change in volume of the cooling medium and/or airspace caused by temperature gradients. All our Transformer Breathers are filled with Envirogel, which is a self-indicating silica gel desiccant. This desiccant is orange/yellow in colour when active, but turns green when saturated.


series

R, R1, & R2

The 'R' Series Transformer Breathers are manufactured from UV stabilised polycarbonate and are available in three different sizes. The clear polycarbonate body allows for clear visibility of the desiccant charge and enables users to check desiccant condition with ease.

The unit is mounted from a ¾" female pipe thread connection at the top of the breather. This connection point is also used for filling and emptying the desiccant within the breather. Two-way, low pressure valves are fitted in the base of the breather to ensure that the atmospheric air enters the desiccant when a negative pressure differential occurs within the equipment being protected.

S-T-and-U-Series

S, T & U Series

These Transformer Breathers have a removable desiccant container which allows the desiccant to be changed without breaking the breather pipe connection. The desiccant container is clamped between the top and bottom end mouldings by two metal tie rods with threaded wing nuts. By releasing the wing nuts, the desiccant container can be easily removed and refilled as required. The Transformer Breathers are manufactured from UV stabilised polycarbonate. The clear polycarbonate body of the desiccant container allows for clear visibility of the desiccant charge. The unit is mounted from a ¾" female pipe thread connection at the top of the breather. Two-way, low pressure valves are fitted in the base of the breather to ensure that the atmospheric air enters the desiccant when a negative pressure differential occurs within the equipment being protected.

V-W-X-Y-and-Z-Series

V, W, X, Y & Z Series

This range of Transformer Breathers provides protection against moisture for large capacity tanks. With the larger amounts of desiccant required to maintain protection, the breathers are more robustly constructed.

The Transformer Breathers have a removable desiccant container which allows the desiccant to be changed without breaking the breather pipe connection. The desiccant container is clamped between the top and bottom end plates by four metal tie rods with threaded nuts. By releasing the nuts, the desiccant container can be easily removed and refilled as required.
The removable desiccant container is fabricated from mild steel which is protected with a phosphate and powder coat finish. The container has a UV stabilised polycarbonate clear window which allows for clear visibility of the desiccant charge. Top and bottom end plates are painted aluminium castings.

The unit is connected either by a flange or pipe thread connection. Mounting brackets on the top plate provides additional support for the breather. Two-way, low pressure valves are fitted in the base plate of the breather to ensure that the atmospheric air enters the desiccant when a negative pressure differential occurs within the equipment being protected.

Re-Actran

Re-Actran


Re-Actran is the latest design of a new generation of transformer breathers developed by Brownell. Re-Actran can provide continuous protection against moisture as the breather is able to self reactivate its own desiccant. This self regeneration capability will eliminate the need for periodic desiccant replacement, and reduce maintenance time.

  • Low intermittent power consumption
  • Continuous desiccant life
  • Minimum maintenance
  • Self reactivating
  • No moving parts

Mark 7

Mark 7


The Mark 7 Transformer Breathers were introduced to meet the additional robustness necessary for the protection of equipment operating under high mechanical stresses. The breathers are fabricated from mild steel which is protected with a phosphate and powder coat finish. The construction of these transformer breathers enables them to withstand the bump, vibration and shock parameters found in electric traction and similar vehicles. These transformer breathers are fitted with oil-seal bowls and are filled with Envirogel desiccant. The only maintenance action required is periodic inspection of the oil level and replacement of the spent desiccant. The beaded desiccant has a much higher dust attrition resistance when compared with the standard granular material previously used.