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    ATS48 what is the maximum starts per hour?

    Issue:
    ATS48 what is the maximum starts per hour?

    Product Line:
    ATS48

    Environment:
    All serial numbers

    Cause:
    40 starts per hour needed

    Resolution: 
    For ATS48, What is the parameter for the maximum number of starts per hour?
    There is no such limitation on the number starts per hour.  However the limitation could arise from the motor manufacturer's data, thermal class of motor, motor duty...etc, as successive starts/hour greater than those studied by manufacturer could cause motor windings to heat.  In addition to motor duty, number of starts per hour for ATS48 soft- starter depends on type pf application for which ATS48 is being used 

    Standard Duty Applications In standard duty applications, the ATS48 soft starter is designed to provide:
    • Starting at 400% of IN 1 for 23 seconds, or 300% of IN for 46 seconds, from a cold state
    • Starting at 400% of IN for 12 seconds, or 300% of IN for 23 seconds, with a load factor of 50% and 10 starts per hour or an equivalent thermal cycling
    • The motor thermal protection conforms to Class 10 overload protection.

    Severe Duty Applications In severe duty applications, the ATS48 soft starter is designed to provide:
    • Starting at 400% of IN for 48 seconds, or 300% of IN for 90 seconds, from a cold state
    • Starting at 400% of IN for 25 seconds with a load factor of 50% and 5 starts per hour or an equivalent thermal cycling
    • The motor thermal protection conforms to Class 20 thermal overload protection.

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