IEC 60317-13:2010

Overview

IEC 60317-13:2010 (with Amendment 1, 2024) specifies requirements for enamelled round copper winding wire, class 200, with a dual coating: an underlying polyester or polyesterimide resin and a polyamide‑imide overcoat. The standard defines mechanical, thermal and chemical performance, appearance and test methods for these class 200 winding wires and is intended to be read in conjunction with IEC 60317-0-1 (general requirements) and test methods such as IEC 60851-4 (chemical properties).

Key topics and technical requirements

• Coating system: dual coating - polyester or polyesterimide base (modifications allowed if chemical identity retained) with a polyamide‑imide topcoat.
• Thermal class: Class 200 - minimum temperature index 200 °C and minimum heat‑shock temperature 220 °C.
• Conductor sizes (nominal diameters):
  • Grade 1: 0.050 mm up to and including 2.000 mm
  • Grade 2: 0.050 mm up to and including 5.000 mm
• Mechanical and electrical tests: dimensional tolerances, electrical resistance, elongation, springiness, flexibility/adherence, heat shock, cut‑through (no failure within 2 min at 320 °C), abrasion resistance (table of minimum forces), breakdown voltage (elevated temp 200 °C), continuity of insulation.
• Chemical resistance: resistance to refrigerants tested per IEC 60851-4:2016 - extractable matter ≤ 0.5% and breakdown voltage ≥ 75% of the specified minimum.
• New/updated requirements introduced in the latest amendment:
  • New appearance requirements
  • Reference to the updated resistance to refrigerants test in IEC 60851-4
  • Deletion of the previous high‑temperature failure requirement
  • New pin‑hole test requirements
• Tests not applicable for this wire type: solderability, heat/solvent bonding and dielectric dissipation factor (marked as inappropriate).

Applications and users

Who uses IEC 60317-13:

• Winding wire manufacturers (product specification and quality control)
• Motor, transformer and generator designers specifying class 200 insulation
• Component suppliers for coils, inductors, relays, solenoids and other electromagnetic devices
• Test laboratories and certification bodies performing compliance testing
• Procurement/specification engineers ensuring material conformity and long‑term thermal performance

Practical value:

• Ensures consistent high‑temperature insulation performance for demanding electrical equipment
• Defines reproducible test methods and acceptance criteria for mechanical, thermal and chemical durability
• Supports selection of wire for applications requiring Class 200 thermal endurance and robust chemical resistance

Related standards

• IEC 60317-0-1: General requirements for enamelled round copper wire
• IEC 60851-4: Methods of test - chemical properties (resistance to refrigerants)
• IEC 60264: Packaging of winding wires (series overview)