UL 2353

Please note: All interim revisions for this edition available at time of your purchase will be included.

Single- and Multi-Layer Insulated Winding Wire

UL 2353

1 Scope

1.1 This Standard contains requirements for winding wire used in transformers without interleaved insulation; and solid insulation and insulated winding wire without interleaved insulation intended for use in accordance with the following standards:

a) Standard for Information Technology Equipment - Safety - Part 1: General Requirements, UL 60950-1; or the

b) Standard for Medical Electrical Equipment, Part 1: General Requirements for Safety, UL 60601-1.

c) Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and tests, IEC 61558-1.

These requirements are not intended to prohibit use of this type of winding wire in equipment covered by the scope of other Standards when these requirements are determined to be compatible with those Standards. 1.1 revised May 14, 2012

1.2 These requirements cover winding wires with a diameter between 0.05 mm (0.002 inch) and 5.0 mm (0.2 inch).

1.3 The winding wire covered by this Standard shall also comply with the infrared analysis requirements in the Standard for Polymeric Materials - Short Term Property Evaluations, UL 746A.

1.4 This Standard does not cover solvent-based enamel coated magnet wire. See the Standard for Systems of Insulating Materials - General, UL 1446. If the desired useage of the single- and multi-layer Insulated winding wire is above Class 105 (A), additional testing of the insulation system would be required in accordance with UL 1446.