IEC 61969-1 pdf – Mechanical structures for electrical and electronic equipment – Outdoor enclosures – Part 1: Design guidelines

IEC 61969-1 pdf – Mechanical structures for electrical and electronic equipment – Outdoor enclosures – Part 1: Design guidelines
2Normative references
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latestedition of the referenced document(including anyamendments) applies.
IEC 60068-2-75，Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60417,Graphicalsymbols for use on equipment(available at http;/www.graphical-symbols. infolequipment)
IEC 60529，Degrees of protection provided by enclosures (IP code)
IEC 60695-11-10，Fire hazard testing – Part 11-10:Test fliames – 50 W horizontal and verticalfiame test methods
IEC 60721-3-2，Classification of environmental conditions – Part 3-2: Classification of groupsof environmental parameters and their severities = Transportation and handling
IEC 60721-3-4,Classification of environmental conditions – Part 3:Classification of groups of
environmentalparameters and their severities – Stationaryuse at non-weatherprotectedlocations
IEC 60825-1，Safety of laser products – Part 1: Equipment specification and requirementsIEC 60950-1，Information technology equipment – Safety – Part 1: General requirements
IEC 61010-1，Safety requirements for electricalequipment for measurement,control,andlaboratory use – Part 1; General requirements
IEC 61140，Protection against electric shock – Common aspects for installation and equipment
IEC 61439-5，Low-voltage switchgear and controlgear assemblies – Part 5: Assemblies forpower distribution in public nefworks
IEC 61587-1， Mechanical structures forelectronicequipment – Tests for IEC 60917 andIEC 60297 series – Part 1: Environmental requirements,test set-up and safetyaspects forcabinets, racks,subracks and chassis under indoor condition use and transportation
IEC 62194，Methods of evaluatirng the therrmal performance of erclosures
IEC 62262，Degrees of protection provided by enclosures for electricalequipment againstexternal mechanical impacts (JK code)
IEC 62305-4,Protection against lightning – Part 4: Electrical and electronic systems withinstructures
ISO1518-1，Paints and varnishes – Determination of scratch resistance – Part 1: Constant-loading method
ISO 3864-2,Graphical symbols – Safety colours and safety signs
ISo 7779，Acoustics – Measurement ofairborne noise emitted by information technology andfelecommunscafions equipment
ETSI EN 300 019-1-4, Equipment Engineering(EE) – Environmental conditions andenvironmental tests for telecommunications equipment – Part1-4: Classification ofenvironmental conditions – Stationary use at non-weatherprotected locations
ETSI EN 300 019-2-4, Equipment Engineering(EE)- Environmental conditions andenvironmental tests for ‘telecommunications~ equipment – Part 2-4: Specification ofenvironmental tests – Stationary use at non-weatherprotected locations
ETSIEN 300 753, Equipment Engineering(EE)- Acoustic noise emitted bytelecommunications equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and lEc maintain terminological databases for use in standardization at the followingaddresses:
.IEC Electropedia: available at http://www.electropedia.orgl
·Iso online browsing platform: available at http://www.iso.org/obp
3.1
outdoor enclosure
enclosure exposed to the outdoor environment,for stationary use at non-weatherprotectedlocations，for the protection of electrical and electronicequipment installed inside againstoutdoor environmental conditions
Note 1 to entry: An outdoorenclosure is applicable for wide field of equipment,(e.g. communication system,industrial or signal control，etc.)
Note 2 to entry. The typical installation locations of outdoor enclosures are shown in Figure 2
3.2
heat transfer rate
k
property with units of W/(m 2 K), a measure of the rate of heat transfer
Note 1 to entry: Detailed calculations for determination of the enclosure design dependent heat management 3.3
static load
maximum mechanical load that an enclosure is able to sustain in static condition withoutmechanical failure, as the gross weight of enclosure including all deemed equipment, multiplied
by a safety factor 1,25
4Coordination dimensions
The dimensions of outdoor enclosures consist of coordination dimensions as given inIEC 61969-2. The coordination dimensions provide the range and systematic stipulation ofpossible enclosure internal and external dimensions.
5Environmental requirements,tests and safety aspects
5.1 Classification of environmental conditions
The classification of environmental conditions for outdoor enclosures is based on requirements
as defined in IEC 60721-3-2 and lEC 60721-3-4, and the tests are in accordance with therelevant parts of the lEC 60068 series.
The selection of relevant requirements, as indicated in Table 1 and Table 2, was made with thefocus on outdoor specific conditions and on structural design and safety aspects.
properties, including the heat transfer rate, are described in IEC 62194.