Load Duty Cycles - Fagor DDS Series Hardware Manual

  Drives

Load duty cycles

3.
180
DDS
HARDWARE
Ref.1912
· 100 ·
Load cycle S1
Continuous duty. Operation with constant load and long enough to achieve
thermal balance.
F. H3/4
Load cycle S1.
Load cycle S3-5%
Periodic intermittent duty. Succession of identical duty cycles each having a
period at constant maximum load and a period at constant rated load. In this
duty cycle, the overheating effect of the start-up current is negligible. The 5
% running factor means that for a 10 second cycle, it works at constant current
I (2xI ) for 0.5 seconds and at rated current (I
S3-5% N

F. H3/5
Load cycle S3-5%.
Load cycle S6-40%
Periodic uninterrupted duty cycle with intermittent load. Succession of
identical duty cycles, each with a running period under constant load and
another period without load. There is no rest period. The 40 % running factor
indicates that for a 10 minute cycle, it works at constant current I
4 minutes and without load for 6 minutes (with magnetizing current = 0.7 x
.
rated current I n )
 
F. H3/6
Load cycle S6-40%.
) for 9.5 seconds.
N
for
S6-40%