1 Scope
Replacement:
This part of IEC 61558 deals with the safety of separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 V. Transformers incorporating electronic circuits are also covered by this standard.
NOTE 1 Safety includes electrical, thermal and mechanical aspects.
Unless otherwise specified, from here onward, the term transformer covers separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 V a.c or 1 500 V d.c .
This Part 2-10 is applicable to stationary or portable , single-phase or polyphase, air-cooled (natural or forced) independent or associated dry-type transformers. The windings may be encapsulated or non-encapsulated.
This standard is applicable to transformers and power supply (linear) with internal operational frequencies not exceeding 500 Hz.
This standard used in combination with Part 2-16 for switch mode power supply units ( SMPS ) is also applicable to power supplies with internal operational frequencies higher than 500 Hz. Where the two requirements are in conflict the most severe take precedence.
The rated supply voltage does not exceed 1 000 V a.c., and the rated supply frequency and the internal operating frequency do not exceed 500 Hz.
The rated output does not exceed:
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