Make use of the support and services offered by the relevant service center for planning,
installation, commissioning, and servicing work. You can find the relevant contact person under
"Service & Support (Page 145)".
2.7.2 Grounding concept
Draw-up a grounding concept and integrate the device into this concept. The grounding
concept must take into consideration national provisions and system specifics. Ensure that the
following criteria are fulfilled:
● At the installation site, the various subunits must be screwed together to establish a good
electrical connection between them.
● If shield busbars are provided, these must be connected together.
● The protective grounding conductor must be connected to the system the grounding point.
Select the highest cross-section of the protective grounding conductor from one of the
following variants:
– According to local wiring regulations
– Calculated according to IEC 60364-5-54, 543.1
– Half a phase conductor cross-section
2.7.3 Installation site safety
Danger due to an unsecured installation location
This device is used in industrial power installations. Improper use, incorrect operation,
insufficient maintenance, and access by unauthorized persons can lead to accidents. The
results can be death, serious bodily injury or damage to property.
● Install the device in electrical rooms where only qualified personnel have access. If this is
not possible, then ensure that a barrier prevents uncontrolled access. Use safety fences and
appropriate signs, for example, to prevent unauthorized entry to the zone that has been
fenced off.
● Place notices that indicate that only trained personnel are allowed to operate and carry out
maintenance and repair work.
● To comply with safety regulations, equip plants and systems with additional monitoring and
protective devices. Follow technical equipment legislation and accident prevention
regulations.
Note
The drive does not have a grounding breaker at the input/output. The system operator must,
therefore, ensure that there is sufficient grounding.
Safety instructions
2.7 Information for persons responsible for plants and systems
SINAMICS PERFECT HARMONY GH150 6SL38253AE412AA1-Z
22 Operating Instructions Rev.201910281231 EXAMPLE
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