Is it possible to run the Altistrt 22 Soft starter on 55°C ambient temperature.
Yes, it is possible to run the Altistrt 22 on 55°C ambient temperatures.
For ambient temperatures between +40°C and +60°C, derate the nominal current of the Altistart by 2.2% for each additional degree.
ATS22C41S6 Soft Starter, nominal current 361A, at 500V, at 40 degree C.
So,For 55 degree C, derate the nominal current of the Altistart by 2.2% for each Additional degree.
=> At 55°C, derating of 33% must be apply
=>361 * [100 - (55-40)*2.2]/100.
So, ATS22C41S6 Soft starter would be good for motors up to 241 A full load current at 55°C.