This part of IEC 60728 deals with the safety requirements applicable to fixed sited systems and
equipment. As far as applicable, it is also valid for mobile and temporarily installed systems, for
example, caravans.
Additional requirements may be applied, for example, referring to:
• electrical installations of buildings and overhead lines,
• other telecommunication services distribution systems,
• water distribution systems,
• gas distribution systems,
• lightning systems.
This document is intended to provide requirements specifically for the safety of the system,
personnel working on it, subscribers and subscriber equipment. It deals only with safety aspects
and is not intended to define a standard for the protection of the equipment used in the system.
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