The protection rating tests carried out according DIN 60529 are
used comparative tests and for classification properties.
. Comment: cable laying
method that allows appropriate removal such vegetation should
be selected. The risk
of harm from plants, algae mould must therefore considered. addition, the local conditions may
differ greatly that general exposure test cannot defined. So, the outside
areas the vicinity filling stations, chemical facilities, landfill
sites, compressors, sewerage treatment plants etc.69
Protection against plants and/or mould growth
The plastics used electrical installation are organic materials.
Notes for outdoor installation
The information the type protection and UV-resistance are
often considered the only important aspects for outdoor installations.
According DIN VDE 0100-520, 522.9.1, experience empirical
evidence shows that plants and/or mould growth can cause damage,
the cable and conductor system must selected accordingly
or special protective measures must provided. The tests
are limited few minutes and cannot emulate exposure rain snow
or cleaning with water jets. increase the service
life the enclosure, advantageous install the enclosure
in area that protected from weather influences. should subjected
to particularly critical investigations beforehand.
However, outdoor installations, other factors such absolute temperature,
frequency temperature change, air humidity and chemical influences in
particular play important role. addition impairments through
UV-effects, outdoor installations damage expected arise
predominantly result chemical influences
