BS 5611:1978

This standard BS 5611:1978 Application guide for on-load tap-changers is classified in these ICS categories:

• 29.120.40 Switches

This application guide is intended to assist in the selection of suitable on-load tap-changers for use in conjunction with the tapped windings of transformers or reactors which, in the following text, are referred to as transformers.

As in the second edition of IEC Publication 214, On-load Tap-changers [revision of Publication 214 (1966)], the designation “on-load tap-changer” is shortened to “tap-changer” in the remainder of this guide and all the tap-changers referred to shall be presumed to comply with the requirements specified in IEC Publication 214.

The recommendations of the application guide are not mandatory and only represent advice to the tap-changer manufacturer and purchaser. The responsibility for the correct application of the fully assembled tap-changer in connection with the transformer is with the manufacturer of the transformer.

Selection of a tap-changer, location of oil-immersed tap-changer components, field service, information required with enquiry or order.