Low Voltage Transformers - Part 1: General Requirements (Bi-National standard, with UL 5085-1)
This is the common CSA and UL standard for low voltage transformers. It is the first edition of CSA C22.2 No.
and the first edition of UL 5085-1. This edition of CSA C22.2 No.
supersedes the requirements of CSA C22.2 No. 66 published in 1988. This edition of UL 5085-1 supersedes the Twelfth edition of UL 506 published in 2000 and the Fourth edition of UL 1585 published in 1998.
These requirements cover the following types of transformers
These transformers are intended to be used in accordance with the National Electrical Code, ANSI/NFPA 70, or CSA C22.1, the Canadian Electrical Code, Part I. The Canadian Electrical Code defines low voltage as any voltage from 31 to 750 V inclusive and high voltage as any voltage above 750 V. The National Electrical Code, ANSI/NFPA 70, defines low voltage as any voltage up to 600 V, nominal. Therefore, low voltage transformers intended for use in Canada may be rated above 600 V up to 750 V. Low voltage transformers intended for use in the United States are rated up to 600 V. Where information in clauses and tables in this standard reference voltage ranges, the limit of 600 V applies in the United States, while the limit of 750 V applies in Canada.
The standard does not cover the following transformers
Part 1, as well as Part 2 and Part 3, establish the characteristics, construction, operating conditions, markings, and test conditions for each type of transformer.
The requirements in this standard may be modified by requirements in an end product standard if a transformer is intended for use only as a component in other equipment.
| SDO | CSA: Canadian Standards Association |
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| Publication Date | Jan. 1, 2006 |
| Language | en - English |
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