DC-bus operation
Rated data
DC-supply power
8
319
EDS94SPP101 EN 7.1
8.4.2 DC-supply power
The parameters relevant for the selection of a supply unit with a suitable supply power
(even in the overload range) are listed in the below table:
U
Lr
Rated AC voltage
Cycle1 Cycleforthesecond-range
Cycle2 Cyclefortheminute-range
P
DC 100%
Permanent power of DC-voltage level
P
ol
Power supply during overload time
t
ol
Overload time
P
re
Power supply during unloading time
t
re
Relief time
Any other cycles are calculated with the following formula:
(
P
ol
⋅ t
ol
)
+
(
P
re
⋅ t
re
)
t
ol
+ t
re
≤ P
DC 100%
Cycles other than the above cycles must not exceed the specified power and time values,
i.e. the values must be used as maximum values.
The values d epend on the rated AC voltage U
Lr
.
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