4.3 Protection against condensation and electrically conductive
pollution
Description
The following should be carefully observed for protection against mechanical and climatic
conditions as well as to guarantee functional safety and the Safety Integrated safety functions:
The components must always be operated in housings, cabinets or enclosed electrical operating
areas/rooms, which as a minimum have degree of protection IP54 according to IEC 60529 or are
in compliance with US, Canadian and Mexican regulations as type 12 enclosure, according to
NEMA250.
A lower degree of protection is permissible, if condensation, conductive pollution and all
other types of pollution can be excluded at the installation site.
It is not intended that the device is cleaned.
4.4 Low-voltage switchgear and controlgear assemblies
Description
If the SINAMICS S drive line-up is used for the electrical equipment of machines, the applicable
requirements of EN60204-1 must also be adhered to.
4.5 Operation on a TN system
Overview
The drive line-up is suitable for connection to a TN system.
Requirement
The following applies when connecting line lters and Line Modules to a TN system:
• Operation on TN systems with grounded neutral point is permissible
• Operation on TN systems with grounded line conductor not permissible
Description
The TN system transfers the PE protective conductor to the installed electrical installation using
a conductor.
Generally, in a TN system the neutral point is grounded. There are variants of a TN system
with grounded line conductor, e.g. with grounded L1.
The TN system can transfer the neutral conductor N and the PE protective conductor either
separately or combined.
Application planning
4.5Operation on a TN system
Booksize power units
Equipment Manual, 09/2023, A5E53307519B AA 43
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