BS EN 60794 is a series on optical fibre cables. Optical fibre cables are an assembly similar to an electrical cable but containing one or more optical cables that are used to carry light. BS EN 60794-4-10 covers cable construction, test methods and optical, mechanical, environmental, and electrical performance requirements for OPGW (optical ground wire) which is used for the protection of electrical power lines against atmospheric discharges or short-circuits and, at the same time, as a high bandwidth transport media for communications-and-control optical signals.
BS EN 60794-4-10 on optical fibre cables is useful for:
The optical fibre elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable is used. BS EN 60794-4-10 the optical ground wire that is a substitute for a conventional ground-/shield-wire containing optical fibres for control and/or telecommunication purposes. Usually, the fibres are embedded loosely in protective buffer tubes. To fulfil mechanical and electrical requirements; and armouring of one or more layers with aluminium, aluminium alloy, and aluminium clad steel, galvanized steel, or a mixture of them is helically stranded. If the construction contains an aluminium tube or an aluminium slotted core, this cross-section is considered a conductive part. Single-mode optical fibres are used which meet the requirements of the relevant part of IEC 60793. Fibres are other than those specified above can be used if mutually agreed upon between the customer and supplier.
The parameters specified in BS EN 60794-4-10 may be affected by measurement uncertainty arising either from measurement errors or calibration errors. Acceptance criteria are interpreted with respect to this consideration. For some tests specified in BS EN 60794-4-10, the objective is “no change in attenuation”. The total uncertainty of measurement for BS EN 60794-4-10 is less than or equal to 0,05 dB for attenuation or 0,05 dB/km for attenuation coefficient. For all tests under load conditions, the fibres are terminated at both ends prior to strain in a manner such that the optical fibre ends cannot move relative to the cable ends. The test results shall meet the requirements as stated in the supplier’s written specification and the following general optical requirement. Using BS EN 60794-4-10 you can specify cable construction, test methods and optical, mechanical, environmental, and electrical performance requirements for the optical ground wire.
EN 60255-26:2009
EN 60794-4-10:2014
IEC 60794-4-10:2014