This is the common CSA and UL Standard for Information Technology Equipment – Safety – Part 21: Remote Power Feeding. It is the first edition of CAN/CSA-C22.2 No. 60950-21 and the first edition of UL 60950-21. This standard is based on IEC 60950-21, first edition.
This Standard has been approved as a National Standard of Canada by the Standards Council of Canada.
This Standard has been approved by the American National Standards Institute (ANSI) as an American National Standard.
This part of IEC 60950 applies to information technology equipment intended to supply and receive operating power via a TELECOMMUNICATION NETWORK, where the voltage exceeds the limits for TNV CIRCUITS.