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FAQ – PON Fibre Cabinets for FTTH & FTTP

What are some of the key features of an outdoor PON fibre cabinet intended for the enclosure and protection of passive fibre optic connectivity?

We are talking about street cabinets containing equipment like spliced or connectorised fibre joint closures, and splitters as used in FFTH and FTTx splice and distribution hubs for PON and P2P networks.

  1. Protection against stuff getting inside
    The IP Rating defined by international standard EN 60529 classifies the degree of protection from ingress of water and solid objects – from curious fingers or vandals’ screwdrivers, insects, through to airborne dust. Read our more detailed guide and blog post about IP Ratings.
  2. Protection from being whacked
    The impact protection IK Rating defined by EN / IEC 62262 (which superseded BS EN 50102 and IEC 60068-2-75) is a scale from 00 to 10, 10 being the best. It defines the impact energy that an enclosure can withstand without causing damage to the internal equipment.  Sometimes used as a proxy for the security that a cabinet will offer against deliberate attack, this is not the intention of the IK Rating.
  3. Mitigation of condensation
    A fibre connectivity cabinet doesn’t require cooling of any active electronics inside that generate heat, but as daytime temperatures cool during the night dew condensation becomes a challenge that must be managed. On the coldest nights the condensation can then freeze too – freezing water splits rocks and erodes mountains, it can quickly make a mess of plastic optical components.
  4. Managing the spaghetti
    A fibre distribution cabinet manages incoming and outgoing fibre on a ration of anything from 1:1 to 1:64, though it could be even higher. Bend radii must be carefully managed so as not to damage the fibres, and keeping it all neat will make field maintenance, adds and changes and troubleshooting so much easier.  Time is money, and minimizing the cost of truck rolls is top of mind for any network operator with a street cabinet estate.

Hopefully that gives a flavour of a few of the important aspects of a street fibre cabinet. For a more in-depth view, why not talk to one of friendly team today to discuss your project.

About Rainford Solutions Ltd

Established in 1982, Rainford serves a diverse client base of Tier 1 network operators, System Integrators and global OEMs across a wide variety of markets, including fixed and mobile network operators, road, rail, data centres, defence, water and energy utilities.

Our UK engineering team is experienced in developing solutions for challenges with thermal, electro-magnetic (EMC), seismic, shock and vibration, ingress protection (IP), and vandals, certified to global civilian and military standards.

Operating from a modern factory located in St Helens, UK, Rainford Solutions’ facilities are built with the highest level of flexibility and capacity for volume manufacture, to support national infrastructure projects.

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