Name: IEC 60317-73:2018 — Specifications for particular types of winding wires - Part 73: Polyester or polyesterimide overcoated with polyamide-imide enamelled rectangular aluminium wire, class 200
SKU: IEC 60317-73:2018
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IEC 60317-73:2018 PDF

Specifications for particular types of winding wires - Part 73: Polyester or polyesterimide overcoated with polyamide-imide enamelled rectangular aluminium wire, class 200

Название (английский):

IEC 60317-73:2018

Specifications for particular types of winding wires - Part 73: Polyester or polyesterimide overcoated with polyamide-imide enamelled rectangular aluminium wire, class 200

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 20
Дата публикации:: 14 июня 2024 г.
Издание:: IEC IS 60317 edition 1 version 1
ICS:: 29.060.10

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Описание (английский):

IEC 60317-73:2018 specifies the requirements of enamelled rectangular aluminium winding wire of class 200 with a dual coating. The underlying coating is based on polyester or polyesterimide resin, which can be modified providing it retains the chemical identity of the original resin and meets all specified wire requirements. The superimposed coating is based on polyamide-imide resin. NOTE A modified resin is a resin that has undergone a chemical change, or contains one or more additives to enhance certain performance or application characteristics. The range of nominal conductor dimensions covered by this standard is: - width: min. 2,0 mm - max. 16,0 mm; - thickness: min. 0,80 mm - max. 5,60 mm. Wires of grade 1 and grade 2 are included in this specification and apply to the complete range of conductors. The specified combinations of width and thickness as well as the specified width/thickness ratio are given in IEC 60317-0-9:2015. Keywords: insulated wires used for windings

Overview

IEC 60317-73:2018 (with Amendment 1:2024) specifies enamelled rectangular aluminium winding wire, class 200, with a dual-coating system: an underlying polyester or polyesterimide resin and a superimposed polyamide‑imide enamel. This part of the IEC 60317 series defines material, dimensional and performance requirements for insulated wires used for windings in electrical equipment, covering nominal conductor widths from 2.0 mm to 16.0 mm and thicknesses from 0.80 mm to 5.60 mm. Both grade 1 and grade 2 wires are included.

Key topics and requirements

Dual-coating chemistry: Base coat based on polyester or polyesterimide (modifications allowed if chemical identity is retained); top coat based on polyamide‑imide.
Thermal class: Class 200 requires a minimum temperature index of 200 °C and a heat shock temperature ≥ 220 °C.
Dimensional range: Width 2.0–16.0 mm; thickness 0.80–5.60 mm. Specific width/thickness combinations and ratios are referenced to IEC 60317-0-9:2015.
Performance testing: Many tests and criteria are applied via IEC 60317-0-9 and IEC 60851 test methods (electrical resistance, elongation, flexibility and adherence, breakdown voltage at elevated temperature, etc.). Several tests are declared inappropriate for this wire type (for instance cut‑through, resistance to abrasion, some bonding or solderability tests). Some tests (dielectric dissipation factor, resistance to transformer oil) are under consideration.
Grades and applicability: Requirements apply across the full range of conductor sizes for grade 1 and grade 2 classifications.
Packaging: Packaging provisions follow IEC 60317-0-9 and relevant packaging standards (IEC 60264 series).

Applications

IEC 60317-73 targets insulated wires used for windings where a rectangular aluminium conductor with high thermal performance and robust enamel insulation is required. Typical applications include:

Power transformers and distribution transformers where aluminium rectangular conductors are preferred for packing efficiency.
Large motors, generator windings, and reactors requiring precise conductor dimensions and class 200 thermal performance.
Industrial electromagnetic coils and winding assemblies where thermal endurance and solvent/chemical resistance from polyamide‑imide coatings are beneficial.

Who uses this standard

Winding wire manufacturers and enamel formulators specifying product formulations and dimensional limits.
Electrical equipment designers and OEMs specifying winding materials for thermal class 200 applications.
Test labs and quality assurance teams verifying compliance to IEC winding‑wire specifications.
Procurement and certification bodies assessing supplier conformance.

Related standards

IEC 60317-0-9:2015 (general requirements for enamelled rectangular aluminium wire)
IEC 60851 series (winding wires - test methods)
IEC 60264 series (packaging of winding wires)

Keywords: IEC 60317-73, enamelled rectangular aluminium wire, polyesterimide, polyamide‑imide, class 200, insulated wires used for windings, winding wire standard.

IEC 60317-73:2018 PDF

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Abstract

Overview

Key topics and requirements

Applications

Who uses this standard

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