scope:

The present document describes the thermal management requirements for outdoor enclosures defined in EN 301 169-1 [i.4] and EN 301 169-2 [i.5]. These thermal management requirements to be defined include:

• a standardized definition of cooling capacity for outdoor enclosures;
• a maximum acceptable delta T between ambient temperature and inside temperature;
• the preferable rule for air flow inside outdoor enclosures;
• the environment class for telecommunication equipment of wireline and wireless access network to be installed in outdoor enclosures.

Not all these requirement are applicable to outdoor enclosures defined in EN 301 169-1 [i.4] and EN 301 169-2 [i.5]; maximum acceptable delta T for equipment in line with EN 301 169-1 [i.4] should be considered as a guide to developer.

The purpose of the present document is to make it more easy to define the responsibility of equipment manufacturers, cabinet manufacturers and integrators.

EMC, safety and acoustic noise requirements are not parts of the present document. Guidance on these aspects are contained in annex D.