Printed version of this standard is available at Library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail.
This standard applies to on-load tap-changers* for power transformers and their motor-drive mechanisms. It relates mainly to tap-changers immersed in transformer oil according to IEC Publication 296, bur may also be used for gas-insulted tap-changers in so far as conditions are applicable.