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 60227-7:2024 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.