Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 215

7 Line Supply Connection
7.2 Voltage matching
Examples
7-214
Matching transformer for 36/47 kW I/R module sinusoidal current:
uk matching transformer = 3%; S
sinusoidal current according to Table 7-1: S
= 1.27  36 kW = 45.72 [ 46 kVA
based on a) S
n1
based on b) Calculation of Sn2
Case 1:
+
S
n2
S > S
n2 n1
The matching transformer requires a rated power S
at a uk of 3%.
Case 2:
If the uk of the matching transformer is less than, e.g. uk=1%
for otherwise unchanged conditions for Case 1:
+
S
n2
S > S
n1 n2
The matching transformer requires an Sn rated power of 46 kVA
at a uk of 1%.
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
= 50000 kVA ; S
K plant
= 2520 kVA
K line
50000  2520  3
= 79.61 [ 80 kVA
(50000 – 2520)  100
⇒ S
is decisive
n2
50000  2520  1
= 26.54 [ 27 kVA
(50000 – 2520)  100
⇒ S
is decisive
n1
© Siemens AG 2012 All Rights Reserved
05.08
05.01
for I/R 36/47 kW
K line
of 80 kVA
n