IEC 60227-7:2024

Overview

IEC 60227-7:2024 specifies particular requirements for polyvinyl chloride (PVC) insulated flexible control cables, screened and unscreened, with two or more conductors and rated voltages up to and including 300/500 V. It is Part 7 of the IEC 60227 series and is intended to be used together with IEC 60227-1 (General requirements). This 2024 edition (Edition 2.0) is a technical revision that, among other updates, replaces references to IEC 60227-2 test methods with IEC 63294.

Keywords: IEC 60227-7:2024, PVC insulated cables, flexible screened cables, control cables, 300/500 V, cable specifications, cable testing.

Key Topics

• Scope and application: Defines particular specifications for screened and unscreened PVC-insulated flexible control cables used at rated voltages up to 300/500 V.
• Construction requirements:
  • Conductors: Conductor types and construction (reference to IEC 60228).
  • Insulation: PVC insulation requirements and identification.
  • Assembly: Core assembling, fillers and overall cable geometry.
  • Inner sheath for screened cables, screen (for screened types), and outer sheath or oversheath.
  • Core identification and overall diameter limits.
• Tests and test methods:
  • General tests and flexing test requirements specific to flexible cables.
  • Reference to material and performance tests in the IEC 60811 series (thermal ageing, oil immersion, mechanical and low-temperature tests).
  • All cable tests for the IEC 60227 series are described in IEC 63294.
• Code designation: Normative annex provides code designation rules for type marking.
• Guidance on use: Practical recommendations for correct application and handling of flexible PVC control cables.

Applications

IEC 60227-7:2024 applies to manufacturers, specifiers and users of control and flexible power/connection cables where PVC insulation is required at voltages up to 300/500 V. Typical stakeholders:

• Cable manufacturers and compound suppliers - for product design, construction and marking.
• Testing laboratories and conformity assessors - for type testing and verification per IEC 63294 and IEC 60811 tests.
• OEMs and machine builders - selecting flexible screened or unscreened cables for control panels, machinery, conveyors and movable equipment.
• Specifiers, procurement and standards committees - drafting purchase specifications and ensuring regulatory compliance.
• Installers and maintenance teams - guidance on correct cable selection and application limits.

Related Standards

• IEC 60227-1 (General requirements for PVC insulated cables)
• IEC 63294 (Test methods for cables specified in IEC 60227 series)
• IEC 60811 series (material test methods for insulating and sheathing compounds)
• IEC 60228 (Conductors of insulated cables)
• IEC 60332-1-2 (flame propagation tests)

IEC 60227-7:2024 is an essential standard for anyone specifying or producing PVC insulated flexible screened and unscreened control cables at low voltages (300/500 V), ensuring consistent construction, testing and safe use.