Low Voltage Transformers - Part 3: Class 2 and Class 3 Transformers (Bi-National standard, with UL 5085-3)
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 5085-3. This edition of CSA C22.2 No.
supersedes the requirements of CSA C22.2 No. 66 published in 1988. This edition of UL 5085-3 supersedes the Fourth edition of UL 1585 published in 1998.
As noted in Low Voltage Transformers
In addition to the items specified in Clause 1.3 of Part 1, the requirements of Part 3 do not cover
This part is intended to be used in conjunction with Part 1. The numbering of the clauses in Part 3 corresponds to the numbered clauses in Part 1. The requirements in Part 1 apply unless modified by Part 3.
A Class 2 transformer that includes a separate current-limiting impedance such as a resistor or a positive temperature coefficient device (PTC) is covered by these requirements.
A Class 2 transformer that includes a resonance regulating circuit is covered by these requirements.
| SDO | CSA: Canadian Standards Association |
| Document Number | |
| Publication Date | Jan. 1, 2006 |
| Language | en - English |
| Page Count | 69 |
| Revision Level | |
| Supercedes | |
| Committee |