Electrical Data
1.1 Definitions
Thermal limiting characteristic
In the diagram this corresponds to the S1 (100 K) characteristic. Also in intermittent duty, the
geometrical average must not exceed this value.
7
&
W
෭W
3
෭W
5
3
3
9
W
Figure 1-3 Periodic intermittent duty - duty type S3
P = Load
P
V
= Electrical losses
t = Time
T
C
= Duty duration 10 min (if not otherwise specified)
Δt
P
= Operating time with constant load
Δt
R
= Standstill time with windings in the no-current state
Relative power-on duration = Δt
P
/T
C
= 25%, 40%, 60%
General Section for Synchronous Motors
Configuration Manual, (PJAL), 11.2005 Edition, 6SN1 197-0AD07-0BP4
1-3
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