How to calculate Heat Dissipation in Main Switchboard

[edinburgh]

heat dissipation calculation

Dear Experts,

My friend is looking for a formula to calculate Heat Dissipation in Main Switchboard.

Pls kindly share and explain the calculation if you know.

He said he doesn't want to use IEC 890...!!!

Thanks.

BEst Regards,Edin

 

[Iouri]

calculate heat dissipation

what is a switchboard?

 

[Arulaane]

how to calculate heat dissipation

well, calculating heat dissipation is one way to go. Measuring another way. If you have a complex board and it will go into production, you need to measure many. mesure the worst case. analyze the statistics. And then you'll get the picture.
I have always tried to calculate before the first protos arrive the heat disspiation. I have noticed that the more complex the board the bigger the calculation error from measurement.
If you do not have any power outputs, then measuring the input power (voltage * current) gives you a very good understanding of the heat that needs to be dissipated. After that look at the PCB with a thermal camera and you'll get the picture of what needs cooling.