Safety Information - Siemens SINAMICS S120 Equipment Manual

5.2

Safety information

After disconnecting all the supply voltages, a hazardous voltage will be present in all
components for another 5 minutes. Work cannot be carried out until this time has elapsed.
Before starting work, you should also measure the voltage after the 5 minutes have
elapsed. The voltage can be measured on DC link terminals DCP and DCN.
The DC link discharge time hazard warning must be affixed to the component in the
relevant local language.
NOTICE
The cooling clearances above, below, and in front of the component, which are specified in
the dimension drawings, must be observed.
Cable shields and power cable conductors which are not used must be connected to PE
potential in order to discharge charges as a result of capacitive coupling.
Non-observance can cause lethal shock voltages.
CAUTION
The busbars and coolant connections which stick out of the module must never be used as
handles or support surfaces when the units are transported.
Motor Modules discharge a high leakage current to the protective ground conductor.
Due to the high leakage current associated with Motor Modules, they or the relevant control
cabinet must be permanently connected to PE.
According to EN 61800-5-1, Section. 6.3.6.7, the minimum cross-section of the protective
ground conductor must conform to the local safety regulations for protective ground
conductors for equipment with a high leakage current.
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1
WARNING
CAUTION
WARNING
DANGER
Motor Modules
5.2 Safety information
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