Different between integrated and separated thermal protection

[Eng_Omar]

Dear Experts ,

I made a small project in Ecodial for a three-phase motor 90KW and i see when i select integrated thermal protection the cross-section of cable is 1x50 but when i changed to the separated thermal protection the cross-section of cable become 1x70 as shown in attached pictures .

Kindly can someone explain to me why there is a difference between the two results? .

Best Regards

[Karthikeyan1]

Hi Omar,

The long time setting of the Integrated Thermal relay Circuit breaker is 170A. And the cable is sized for 170A which is (1X50sq.mm). But for Separated Thermal relay Circuit breaker it is 220A. So that particular cable is sized for 220A(1X70sq.mm). Refer the properties tab on Circuit breaker selected to get the Long time setting. 

Thanks & Regards,

Ecodial Expert Team.