Siemens SIMODRIVE 611 Planning Manual page 54

2 System Configuration
2.8 Line supply connection
2
Connection
through an
isolating
transformer
2-54
Table 2-4 Engineering information/instructions if you dimension the transformer
yourself
I/R module Required rating Sn of the isola-
used ting/autotransformer
Sn  21 kVA
16/21 kW
Sn  46.5 kVA
36/47 kW
Sn  70.3 kVA
55/71 kW
Sn  104 kVA
80/104 kW
Sn  155 kVA
120/156 kW
UI module Rating Sn required for the iso-
used lating/autotransformer
Sn  7.8 kVA
5/10 kW
Sn  14.5 kVA
10/25 kW
Sn  40.5 kVA
28/50 kW
Note
Switching elements (main switch, contactors) to switch–in and switch–out the
line filter may have a max. 35 ms delay time between the closing/opening of the
individual main contacts.
It is possible to use an isolating transformer in conjunction with a protective
measure against hazardous currents going through the human body.
Notice
When using an isolating transformer upstream from I/R and UI modules
(module width  100 mm), an overvoltage limiting module should be used,
Order No.: 6SN1111–0AB0V–0AA0; refer to Section 7.
A voltage limiting circuit is included for UE 5 kW, Order No.:
6SN1146–2AB00–0BA1.
If line filters are required and if the rated line supply voltage deviates from the
permissible supply voltage of the line filters (3–ph. 400 V AC or 3–ph. 415 V
AC), then one of the matching transformers, specified in the following, must be
used.
The SIMODRIVE 611 drive converter system is designed for a rated voltage of
300 V phase–grounded neutral point.
This voltage may not be exceeded, as otherwise the drive converter insulation
system could be damaged resulting in inadmissibly high touch voltages.
Short–circuit voltage
required uk
uk  3%
uk  3%
uk  3%
uk  3%
uk  3%
Short–circuit voltage
required uk
uk  10%
uk  10%
uk  10%
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01
J