1 Scope
This Part of GB 10230 applies to on-load tap-changers of both resistor and reactor types, off-circuit tap-changers, and their motor drive mechanisms. It applies mainly to tap-changers immersed in transformer oil 1) according to IEC 60296 but may also be used for tap-changers with gas insulation or immersed in other insulating liquids insofar as conditions are applicable.
1) The oil referred to in this Part includes other liquid media as appropriate, unless otherwise specified.
It applies to power and distribution transformers of all types and also to reactors.
It does not apply to traction transformers and reactors.
Note: tap-changers of traction transformers and reactors may make reference to this Part and relevant performance indexes shall be determined through negotiation between the manufacturer and the user.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this Part of GB 10230. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB 10230.1-2007 The following standards are cited：
