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Will NSX breakers used in Mw2 with Type 2 Coordination table comply to 20xIn starting current in BlokSeT?
Trip class (class)
The class is selected as a function of the normal motor starting time.
>> Class 5: starting time less than 5 s.
>> Class 10: starting time less than 10 s.
>> Class 20: starting time less than 20 s.
For a given class, it is necessary to check that all motor-feeder components are sized to carry the 7.2 Ir starting current without excessive temperature rise during the time corresponding to the class.


So in conclusion, the time delay maximum you can achieve in NSX for motor protection is 7.2 X In.

Schneider Electric Belgium

Will NSX breakers used in Mw2 with Type 2 Coordination table comply to 20xIn starting current in BlokSeT?
Trip class (class)
The class is selected as a function of the normal motor starting time.
>> Class 5: starting time less than 5 s.
>> Class 10: starting time less than 10 s.
>> Class 20: starting time less than 20 s.
For a given class, it is necessary to check that all motor-feeder components are sized to carry the 7.2 Ir starting current without excessive temperature rise during the time corresponding to the class.


So in conclusion, the time delay maximum you can achieve in NSX for motor protection is 7.2 X In.

Schneider Electric Belgium

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