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to provide useful reference, calculation factors, formulae and diagrams pertaining to power convertor practice. to give additional information on test conditions and components, (for example: semiconductor devices), when required for their use in semiconductor power con- vertors, in addition to or as a modification on existing standards to give application oriented requirements for semiconductor power convertors. to specify basic performance requirements to specify test requirements for complete convertor equipment and assemblies, standard design, (for special design see IEC 146-1-2) to specify service conditions which influence the basis of rating to establish basic terms and definitions Part 1 -1, IEC 146-1 -1, Specifications of basic requirements. The main purposes of this standard are as follows: motor drives) or include a combination of said characteristics (for example direct d.c.
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These specific equipment requirements are applicable to semiconductor power convertors that either implement different types of power conversion or use different types of commutation (for example semiconductor self-commutated convertors) or involve particular applications (for example semiconductor convertors for d.c. Parts of this standard are applicable also to other types of electronic power convertors and should be regarded as a standard for them in so far as it is not in contradiction to additional IEC Standards for particular types of semiconductor convertors given in existing or future IEC Publications. This standard is primarily intended to specify the requirements applicable to line commutated convertors for conversion of a.c. Non-bistable devices are assumed to be operated in the switched mode.
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The devices may be controlled by means of current, voltage or light. diodes and various types of thyristors and transistors, such as reverse blocking or conducting thyristors, turn-off thyristors, triacs and power transistors. The electronic valves mainly comprise semiconductor devices, ยก.e. This International Standard specifies the requirements for the performance of all electronic power convertors and electronic power switches using controllable and/or non-controllable electronic valves.