Protective Conductor - Siemens Sinamics CU240D-2 DP Operating Instructions Manual

Installation
4.2 Electrical Installation
TT system
In a TT line system, the transformer grounding and the installation grounding are
independent of one another.
There are TT line supplies where the neutral conductor N is either transferred – or not.
Operation of the inverter on the TN and TT line system
The inverter is designed for TN and TT line systems with a grounded neutral point
Above an installation altitude of 2000 m, the permissible line supplies are restricted.
Prohibited operation
● Operation on TN line systems with grounded external conductors is prohibited.
● Operation on TT line systems without grounded neutral points is prohibited.
4.2.3

Protective conductor

Electric shock due to interrupted protective conductor
The drive components conduct a high leakage current via the protective conductor.
Touching conductive parts when the protective conductor is interrupted can result in death
or serious injury.
• Dimension the protective conductor as stipulated in the appropriate regulations.
38
Current derating as a function of the installation altitude (Page 316)
WARNING
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF