SIST HD 627 S1:1998/A1:2002

Overview

Standard: HD 627 S1:1996/A1:2000 (SIST HD 627 S1:1998/A1:2002)
Organization: CLC (converted legacy by DCLab NISOSTS, scope 2021)
This standard covers multicore and multipair cables for installation above and below ground. It provides a harmonized technical framework for the design, construction, testing and marking of cables intended for aerial and buried installation. The Slovenian implementation (SIST) mirrors the CLC document and is referenced under ICS code 29.060.20 (Cables).

Key Topics

The standard addresses the principal technical aspects relevant to multicore cables and multipair cables used in building and external cabling systems:

• Scope and definitions - clear identification of cable types and intended installation environments (air and earth).
• Construction and materials - guidance on conductor arrangements, insulation, shielding/screening, bedding and outer sheaths suitable for overhead and underground use.
• Electrical properties - requirements for continuity, insulation resistance and other electrical performance characteristics appropriate to multicore/multipair designs.
• Mechanical properties - aspects such as tensile strength, flexibility and mechanical protection necessary for installation and service life.
• Environmental resistance - durability against moisture, temperature variations, UV (for aerial) and soil conditions (for buried cables).
• Testing and conformity - standardized test methods and criteria to verify performance and safety before placement.
• Marking and documentation - requirements for labelling, product data and installation instructions to support correct deployment.

(As a legacy HD/CLC document implemented in Slovenia, the standard may include multilingual titles and national notes.)

Applications

This standard is intended for professionals involved in the specification, manufacture, testing and installation of cabling systems where multiple conductors or pairs are required:

• Cable manufacturers - to design and certify multicore/multipair products for aerial and buried use.
• Installers and contractors - to select compliant cables for overhead lines, ducted runs and direct-burial installations.
• System designers and specifiers - to ensure cable choices meet required electrical, mechanical and environmental criteria.
• Test laboratories and inspectors - to verify conformity with harmonized test procedures.
• Procurement and maintenance teams - to specify standards-compliant products that reduce risk and lifecycle costs.

Benefits

Using this standard helps ensure safety, reliability and interoperability of multicore and multipair cabling systems for both above-ground and underground installations, supporting compliance with national and European technical requirements.

Related Standards

• Other CLC/HD documents on cable fire performance, low-voltage wiring and installation practice (refer to national or CENELEC catalogues for exact cross-references).