Abstract： IEC 60044-3:2002 pdf free download.Instrument transformers -Part 3: Combined transformers. This part of IEC 60044 applies to newly manufactured combined transformers for use with electrical measuring instruments and electrical protective de...

IEC 60044-3:2002 pdf free download.Instrument transformers -Part 3: Combined transformers.

This part of IEC 60044 applies to newly manufactured combined transformers for use with electrical measuring instruments and

electrical protective devices at frequencies from 15 Hz to 100 Hz

The requirements and tests of this standard, in addition to the requirements and tests of IEC 60044-1. IEC 60044-2 and IECIPAS 60044-5 cover current, voltage and capacitor voltage transformers, that are necessary for combined instrument transformers,

2 Definitions

For the purposes of this part of IEC 60044, the definitions given in IEC 60044-1 and IEC 60044-2 and the following definition

apply.

combined instrument transformer

instrument transformer consisting of a current and a voltage transformer in the same case

3 Normal and special service conditions

For the purposes of this part of IEC 60044, Clause 3 of IEC 60044-1 and Clause 4 of IEC 60044-2 apply to current and voltage

transformers respectively.

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