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PRODUCTINFORMATION'R' SERIES TRANSFORMER BREATHERS
Connection: 3/4" Female Pipe Thread conforming to BS21 and ISO7-1. Desiccant type: Envirogel – self indicating beaded silica gel.
Selection Guide
The following data should be used for the basic selection of a transformer
breather. In order to assess the size of the
breather the air volume above the oil in the conservator tank is the most important factor. The quantity of oil and the transformer rating is of secondary importance. The daily breathing rate is based on the assumption that there are two temperature drops of 8 C per 24 hours. The breathing volume change which occurs during the pump start-up is not taken into consideration.
Installation
The
breather is supplied with a threaded sealing plug screwed into the top moulding to prevent any water vapour ingress whilst in store. This plug should be removed immediately prior to the unit being fitted to the air vent pipe of the transformer reservoir tank. Fit the
breather and tighten using the spanner flats provided at the top of the unit. Maximum torque on threads is 9Nm/80lbfin.NOTE: DO NOT ATTEMPT TO SCREW OR UNSCREW THE BREATHER BY HOLDING THE BODY WITH YOUR HANDS, USE A SPANNER ON THE FLATS PROVIDED. Full installation and maintenance instructions are supplied with each Transformer Breather.
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