Drives
3.
180
Ref.1912
DDS
HARDWARE
· 100 ·
Load duty cycles
Load cycle S1
Continuous duty. Operation with constant load and long enough to achieve
thermal balance.
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
IS3-5% (2xIN) for 0.5 seconds and at rated current (IN) for 9.5 seconds.
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 IS6-40% for
4 minutes and without load for 6 minutes (with magnetizing current = 0.7 x
rated current I
n).
F. H3/4
Load cycle S1.
F. H3/5
Load cycle S3-5%.
F. H3/6
Load cycle S6-40%.
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