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18
DCS800-EP Installation and Start-Up Manual
IT (ungrounded) systems
Don’t use EMC filters.
The screen winding of dedicated transformers must be grounded.
For installation without low voltage switch (e.g. contactor, air-circuit-breaker) use
overvoltage protection.
The voltage shift of isolated supply must be limited of a range of an earth fault.
Check supply voltages
•
Aux X99
•
Fan Terminals
•
AC voltage for armature circuit U1, V1, W1
Connecting the power cables
Grounding and screening of power cables see manual
Technical Guide, see
Reference.
Cross sectional areas and tightening torques of power cable see chapter
Planning
the electrical installation.
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