Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 3-4: Wall box for splice to patchcord connections@ for category C and A
Product definition This document contains the dimensional@ optical@ mechanical and environmental performance requirements of a fully installed optical fibre wall or pole mounted box@ in order for it to be categorized as a European Standard product. The typical configuration is splicing of incoming fibres to optional splitters and/or to pigtails@ connecting pigtail plugs on one side to patchcord plugs on the other side@ using adapters. A box is a protective housing containing a fibre management system with splice trays of various fibre separation levels and connector mounting plates. The box may contain one or more of the following: ?? storage and routing for fibre and cable; ?? uncut fibre cable storage; ?? splice trays; ?? adapters and connectors; ?? passive optical devices (optical splitters or WDM). A box can be installed on a vertical indoor or outdoor surface above ground level. If the box is required to be relocatable with cables attached@ the following additional tests are performed: ?? cable bending; ?? cable torsion. This document specifies the number of splice trays and splice/connector capacity for each fibre separation level. The maximum capacity is 144 connectors and splices. For housings with a higher number of splices and connectors@ EN 50411-4-1 (street cabinets) can be used. Boxes for fibre splices only are covered in EN 50411-3-1. Operating environment The tests selected@ combined with the severity and duration@ are representative of indoor and outside plants for above ground environments defined by EN IEC 61753-1: ?? category C: Controlled (indoor) environment; ?? category A: Aerial (above ground) environment. Reliability Whilst the anticipated service life expectancy of the product in this environment is 20 years@ compliance with this document does not guarantee the reliability of the product. This can be predicted using a recognized reliability assessment programme. Quality assurance Compliance with this document does not guarantee the manufacturing consistency of the product. This can be maintained using a recognized quality assurance programme. Allowed fibre and cable types This box standard accommodates EN IEC 60793-2-50 singlemode fibres and EN 60793-2-10 A1-OM2 to A1-OM5 and A1-OM1 multimode fibres and all EN 60794 series optical fibre cables with various fibre capacities@ types and designs.