Abstract： IEC 60044-2:1997 pdf free download.Instrument transformers -Part 2: lnductive voltage transformers. This part of lEG 44 applies to new inductive voltage transformers for use with electrical measuring instruments and electrical protective de...

IEC 60044-2:1997 pdf free download.Instrument transformers -Part 2: lnductive voltage transformers.

This part of lEG 44 applies to new inductive voltage transformers for use with electrical measuring instruments and electrical

protective devices at frequencies from 15 Hz to 100 Hz.

Although this standard relates basically to transformers with separate windings, it is also applicable, where appropriate, to

auto-transformers. This standard does not apply to transformers for use in laboratories.

NOTE — Requirements specific to three-phase voltage transformers are not included in this standard but, so far as they are

relevant, the requirements in clauses 3 to 11 apply to these transformers and a few references to them are included in those clauses (e.g. see 2.1,4, 5.1.1, 52. and 11.2).

Clause 13 covers the requirements and tests, in addition to those in clauses 3 to 12, that are necessary for single-phase inductive protective voltage transformers. The requirements of clause 13 apply particularly to transformers which are required to have

sufficient accuracy to operate protective systems at voltages that occur under fault conditions.

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