IEC 60728-11:2023

Overview - IEC 60728-11:2023 (Cable networks safety)

IEC 60728-11:2023 is the international safety standard for cable networks delivering television, sound and interactive services. It defines safety requirements for fixed-site systems and equipment and - where applicable - for mobile or temporary installations (for example, caravans). The document addresses safety of the system, personnel, subscribers and subscriber equipment, but does not set requirements for protection of the equipment itself. Edition 5.0 (2023) cancels the 2016 edition and introduces several technical revisions to align with modern risk and design practices.

Key topics and technical requirements

The standard concentrates on practical safety measures for cable and antenna distribution systems. Key topics include:

• Fundamental requirements for design, mechanical integrity and accessible parts.
• Equipotential bonding and earthing arrangements to prevent hazardous potential differences.
• Protection against atmospheric overvoltages and lightning (including an obligatory lightning-risk assessment).
• Remote power feeding requirements for subscriber feeders, including maximum voltages and mandatory component current-carrying capacity and dielectric strength.
• Mains-supplied equipment safety and segregation distances from electric power distribution systems and overhead lines.
• System outlets and transfer points (fully isolated, semi-isolated, non-isolated types) and FTTH-specific considerations.
• Mechanical stability: mast and mounting design, bending moment and wind-pressure criteria.
• Documentation requirements: details of installed equipment and published data for installations.

Significant 2023 technical updates include replacement of references to IEC 60065/60950-1 with IEC 62368-1, new subclauses, revised equipment class definitions, added definitions for harm/hazard and user competency, expanded mechanical/design rules, and mandatory assessments for lightning risk and component electrical ratings.

Applications and practical value

IEC 60728-11:2023 is used to:

• Design and certify safe cable-TV headends, antenna systems, coaxial distribution and FTTH installations.
• Specify earthing/bonding methods and overvoltage protection for building owners and service providers.
• Define safe remote powering of subscriber equipment and feeder circuits.
• Inform installation procedures for contractors, integrators and maintenance personnel.

Keywords: IEC 60728-11:2023, cable networks safety, remote power feeding, equipotential bonding, earthing, lightning protection, FTTH, system outlets.

Who should use this standard

• Network designers and system integrators (MSOs, broadband operators)
• Installation and maintenance contractors
• Electrical safety engineers and compliance officers
• Building owners, facility managers and regulators

Related standards

• IEC 62368-1 (replace references in previous editions)
• Relevant national standards for electrical installations, lightning protection and telecommunication distribution systems (see Annex C for country differences).