Siemens 6SL3210-1SB11-0UA0 [58/318] Operation of the line connection components on the supply network

Siemens 6SL3210-1SE21-8AA0 [58/318] Operation of the line connection components on the supply network
Mains connection and line-side power components
2.9 Line connection variants
Manual
58 Manual, 01/2011, 6SL3097-4AC10-0BP2
Note
Line connection of motors
In combination with the drive system, the motors are generally approved for operation on TN
and TT systems with grounded neutral point and on IT systems.
In operation on IT systems, the occurrence of a first fault between an active part and ground
must be signaled by a monitoring device. In accordance with IEC 60364-4-41, it is
recommended that the first fault be eliminated as quickly as is practically possible in order to
minimize the temporary overload of the motor insulation.
In all other systems, except TN and TT systems with grounded neutral point and IT systems,
such as systems with a grounded line conductor, an isolating transformer with grounded
neutral point (secondary side) must be connected between the supply and the drive system
in order to protect the motor insulation from continuous excessive stress.
2.9.2 Operation of the Line Connection Components on the Supply Network
The SINAMICS S Blocksize drive system is designed to be directly connected to TN, TT line
supply systems with grounded neutral conductor or grounded phase conductor as well as to
IT line systems with rated voltages from 3-ph. 380 V to 480 V AC and 1-ph. 200 V to 240 V
AC. Operation with line filter is only possible, without having to use additional measures,
when connected to TN line supply systems with grounded neutral conductor.
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Figure 2-17 Direct operation on the line supply

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