advantages of vvvf drives over non vvvf drives for EOT cranes

advantages of vvvf drives over non vvvf drives for EOT
cranes

Question Posted / ranganath

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advantages of vvvf drives over non vvvf drives for EOT cranes..

Answer / vinod

smooth start and stop.
no jerking of load.
exact posiitoning
better protection for motor.
high/low speed selection.
reliability of break shoe.
programmable break control.
easy circutry
reduction in controls
increases motor life

Is This Answer Correct ?

20 Yes

3 No

advantages of vvvf drives over non vvvf drives for EOT cranes..

Answer / sivaramakrishnan.s

Starting current is limited mostly to 1.5 times of motor
Full load current
as there is no contactor for power control maintenance is
less

Is This Answer Correct ?

9 Yes

2 No

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