Chapter 1 Safety Instructions
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7. Minimize the distance between an interference source and an interference sink (interference-
threatened device), thereby decreasing the effect of the emitted interference on the
interference sink.
You should use only interference-free devices and maintain a minimum distance of 0.25
m from the adjustable frequency inverter.
8. Follow safety measures in the filter installation.
If using external EMC filter, ensure that the ground terminal (PE) of the filter is properly
connected to the ground terminal of the adjustable frequency inverter. An HF ground
connection via metal contact between the housings of the filter and the adjustable
frequency inverter, or solely via cable shield, is not permitted as a protective conductor
connection. The filter must be solidly and permanently connected with the ground potential
so as to preclude the danger of electric shock upon touching the filter if a fault occurs.
To achieve a protective ground connection for the filter:
Ground the filter with a conductor of at least 10 mm
2
cross-sectional area.
Connect a second grounding conductor, using a separate grounding terminal parallel to
the protective conductor. (The cross section of each single protective conductor terminal
must be sized for the required nominal load.)
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