Answer / venkatesan.j

Yes the motor can be run above the rated speed through a
VFD ,but it depends upon the manufacturer specification how
much duration and how much it can be raised.

Answer / farooq malik

VFD varies the frequency of the motor from 0 to 100 persent
at the same time varies the power of the motor. Maximum
frequency it can go up to, is 100% which is 50 hz (Supply
frequeny). so the full speed is at 100 % freq, (that is at
50Hz)which as per name plate is 1440. hope this helps.

Answer / m bilal akram

yes we run motor long time with use of VFD because VFD
maintain V/F ratio every time.

please send me previose rrb junior engineer qustion papers

0 Answers   RRB,

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