Siemens SIMODRIVE 611 digital Configuration Manual page 204

7 Line Supply Connection
7.2 Voltage matching
Matching
transformer
configuration
!
7-204
www.aotewell.com
A SIMODRIVE NE module and other loads/machines are connected at the
matching transformer (refer to Fig. 7-6).
Line supply
connection/
S plant
K
transformer for
the plant
For isolating
transformer:
Ground the star
1)
point!
S transformer
K
Matching trans-
former for the
machine
S line
K
Line fuses
Line filter ≁
Commutating
reactor
U1 V1
NE module
1) Loadability, note dependent of the vector group!
Fig. 7-6 Connection schematic, matching transformer for additional loads
A matching transformer must be dimensioned for the total of all loads connected
to it. The apparent power required for the NE modules must be determined and
added as shown in Chapter 6.3.1, Table 6-6. If the transformer S
small, this can lead to increased line voltage dips and faults in the system and
in other loads at this connecting point.
Warning
A sufficiently high system fault level (short--circuit power) is required to ensure
that when a ground fault does occur, the fuses rupture in the specified time. An
insufficient system fault level (short--circuit power) increases the time to trip
beyond permissible levels (e.g. a fire is possible).
SIMODRIVE 611 Configuration Manual (PJU) - - 05/2008 Edition
sales@aotewell.com
Line fuses
W1
PE
© Siemens AG 2008 All Rights Reserved
Industry Automation
05.08
05.01
Additional loads/
machines
or S is too
n K
+86-755-8660-6182