Temperature Rise BSEN60439-1

[fornhamspark]

Has anyone experiance of the above British Standard for control panels.

I have a transformer to be mounted in a steel enclosure with a core temperature rise of 30 celcius. An ambient air temperature assume 30 celcius.
From the British Standard Section 7.3 Table 2 Temperature Rise for accessible external enclosures and covers is 30Kelvin.
From my understanding with amb of 30c and a rise of 30k the external metal temperature can not rise above 60c

Could some one possibly point me in the right direction as to how to calculate the forced cooling required.

 

[ozmosis]

Here's a useful booklet published by GAMBICA (GAMBICA is the national organization representing the interests of companies in the instrumentation, control, automation and laboratory technology industry in the UK)

http://www.gambica.org.uk/pdfs/GAM0029.pdf