Constant current transformers-new report

Report No. 12 on A. I. E. E. Standards for Constant Current Transformers is now available. In accordance with our regular practise with all proposed A. I. E. E. Standards this is issued with a view to obtaining the opinions, criticisms and suggestions, of as many interested persons as possible. This report was developed by a subcommittee of the Electrical Machinery Comittee of the Institute. These tentative Standards apply only to constant current transformers. Other types of transformers are covered by Section 13, “Transformers, Induction Regulators and Reactors,” and Section 14, “Instrument Transformers,” both approved A. I. E. E. Standards. The new report contains definitions, rating requirements, temperature limitations and methods of making the temperature test, efficiency and losses, dielectric test, insulation resistance, lead markings for transformers, recommendations for operation. Copies of Report No. 12 can be obtained without charge by writing the Secretary of the Standards Committee at A. I. E. E. headquarters.