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Description

UL 2353 – Safety for Single- and Multi-Layer Insulated Winding Wire

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

Scope

1.1 This Standard contains requirements for single and multi – layer insulated 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 Standard for Information Technology Equipment – Safety – Part 1: General Requirements, UL 60950-1, the Standard for Medical Electrical Equipment, Part 1: General Requirements for Safety, UL 60601-1, or the 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.

1.2 This Standard also contains requirements for enamelled Fully-Insulated Wire (FIW) that are deemed suitable for use in end-products standards. The enamelled winding wire shall be a designated NEMA Type MW 85 as specified in the Standard for Magnet Wire, NEMA MW 1000.

1.3 These requirements cover winding wires with a diameter between 0.05 mm (0.002 in) and 5.0 mm (0.2 in) and MW 85 solvent-based enamel coated winding wires with a diameter between 0.040 mm (0.0016 in) and 1.60 mm (0.06 in).

1.4 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.

1.5 This Standard does not cover solvent-based enamel coated magnet wire unless as specified in 1.2. See the Standard for Systems of Insulating Materials – General, UL 1446. If the desired usage 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.