wrote in message
...
Dear sir,

we are useing 4Q dc drive SSD make for 700 hp rolling mill
application .This motor for mill.We are faceing problem when ever
power dip occured incomming fuses of 3 phase fuses falure freqently
and alarm showing in drive speed feedback.we are useing incomming
thyrestor fuses.
how to eleminate this problem?


Try here lad,

alt.engineering.electrical

Kirk Johnson
"Stretching Specialist"