7
05.01
7.2 Voltage matching
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©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
7.2
Voltage matching
7.2.1
General
A distinction is made between:
Line connection components to be directly connected to the line supply
Line connection components to be directly connected to an autotransformer
Line connection components to be directly connected to an isolating trans-
former
Note
If isolating transformers are used upstream (in front of) I/R and UI modules, an
overvoltage limiter module (Order No.: 6SN1111–0AB00–0AA0) must be used,
refer to Chapter 6.7.2.
For 5 kW UI module (Order No.: 6SN1146–2AB00–0BA1), a voltage limiter
circuit is included.
7.2.2
Line supply types
The air and creepage distances in the SIMODRIVE 611 drive converter system
have been dimensioned for rated voltages up to 520 V AC, 300 V phase–
grounded neutral point.
This voltage may never be exceeded as otherwise the converter insulation
system would be damaged and would result in inadmissibly high touch volt-
ages.
!
Caution
The drive converters may only be connected to TN line supplies, either directly
or through an autotransformer.
The SIMODRIVE 611 drive converter system is insulated in compliance with
DIN EN 61800–5–x. This means that the insulation system is designed for
direct connection to a TN line supply with grounded neutral point. For all other
line supply types, an isolating transformer with neutral point on the secondary
side must be used upstream (in front of) the units. This transformer is used to
de–couple the line supply circuit (overvoltage Category III) from a non
line–supply circuit (overvoltage Category II), refer to IEC 60644–1.
7 Line Supply Connection
02.12
