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Electric Motors and Drives
book

Electric Motors and Drives

by Austin Hughes
October 2013
Beginner to intermediate content levelBeginner to intermediate
316 pages
13h 14m
English
Newnes
Content preview from Electric Motors and Drives
58 Electric Motors and Drives
drives, but these will not be discussed here). So with =
415 V for example, the maximum d.c. output voltage (equa-
tion 2.6) is 560 volts. After allowances have been made for
supply variations and impedance drops, we could not rely
on obtaining much more than 520-540 V, and it is usual for
the motors used with 6-pulse drives fed from 415 V, 3-phase
supplies to be rated in the range 440-500 V. (Often the field
winding will be supplied from single phase 240 V, and field
voltage ratings are then around 180-200 V, to allow a mar-
gin in hand from the theoretical maximum of 216 V referred
to earlier.)
Firing circuits ...
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Publisher Resources

ISBN: 9781483105277