• DNL Exports (India) Private Limited

Transformer Breathers

DNL Exports offers Brownell 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 in the insulating properties of the cooling medium. Brownell transformer breathers provide an economic and efficient means of controlling the level of moisture entering equipment during the change in volume of the cooling medium and/or airspace caused by temperature gradients. All Brownell transformer breathers are filled with Envirogel, which is a self- indicating silica gel desiccant. This desiccant is orange in colour when active, but turns green when saturated. This allows a visible assessment of the condition of the desiccant. Various sizes and types of packs of this desiccant are available for re-charging the desiccant containers. Brownell transformer breathers provide clear visibility of the desiccant charge through a clear, shatterproof, UV stablilised polycarbonate cylinder or window, depending upon the size of the unit. Two-way, low pressure valves are fitted in the base of the breather to ensure that atmospheric air enters the desiccant charge when a negative pressure differential occurs within the equipment being protected. Brownell have more than 30 years experience in the design, manufacture and testing of types of humidity control equipment and moisture measuring instruments.