Siemens SINAMICS S120 Equipment Manual page 124

Line Connection Booksize
2.13 Line connection variants
Example 4
If S
u
k
S
K plant
S
K line
According to a)
S
n1
According to b)
S
n1
The matching transformer requires a rated power S
Note
S
n2
power drawn from other loads has not been taken into account.
124
is smaller, you can use, alternatively to example 3, a transformer with a smaller u
K plant
matching transformer = 1%,
= 3,000 kVA
= 16 kW • 70 • 0.73 = 820 kVA
= 1.27 • 16 kW = 21 kVA
> S ⇒ S is decisive
n2 n1
for the matching transformer can be reduced by reducing u
of 21 kVA at a u of 1%.
n k
. In the examples above, the
k
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
.
k
Booksize power units