Siemens SIMODRIVE 611 digital Configuration Manual page 200

7 Line Supply Connection
7.2 Voltage matching
IT line supply
IT line supply and isolating transformer
connection schematic
Line supply/transformer for the factory
Line filter ≁
Commutating
reactor
U1 V1 W1
NE module
Fig. 7-3 IT line supplies connection schematic
7-200
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Symmetrical 3--conductor or 4--conductor three--phase line supply with no di-
rectly grounded point. The loads are connected, e.g. with grounds.
L3
L2
L1
PE
N
Isolating
transformer
Commutating
reactor
PE
Thus, within the pulsed transistor converter, the voltage stressing on the insulat-
ing clearances between the power circuits at the line supply potential and the
open and closed--loop control circuits referred to the protective conductor poten-
tial, according to a rated voltage of 300 V complies with IEC/DIN EN 50178.
Due to the 6--pulse 3--phase bridge circuit in the line supply infeed module, any
fault currents will contain DC components. This must be taken into consider-
ation when selecting/dimensioning a fault current protective device, e.g. an
RCCB.
SIMODRIVE 611 Configuration Manual (PJU) - - 05/2008 Edition
sales@aotewell.com
IT line supply and isolating transformer
connection schematic
Line supply/transformer for the factory
Isolating
transformer
Line filter ≁
PE
U1 V1 W1
NE module
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Industry Automation
11.05
05.01
L3
L2
L1
PE
N
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