BS 9720 specifies the requirements that manufacturers of custom-built transformers and inductors need to comply with in order to achieve and maintain capability approval to BS 9000, and the component test schedules to be used for the assessment of that capability. BS 9720 applies to components, including polyphase types that are primarily intended for use in electronic equipment.
BS 9720 also specifies marking requirements and related symbols and terminology and describes the methods of test for transformers and inductors that are required by the relevant sectional specifications (which contain the customer’s blank detail specification), and the schedules for the assessment and maintenance of capability.
BS 9720 on custom-built transformers is helpful for:
Having access to reliable requirements is essential to prepare and use quality custom-built transformers. BS 9720 provides manufacturers with the related documents, certified test records, and standard ratings along with the characteristics which allows them to manufacture and test custom-built transformers.
BS 9720 provides users with efficient and standardized custom-built transformers.