Operating A Motor Module Chassis-2 On A Non-Grounded Line Supply (It Line System) - Siemens SINAMICS S120 Equipment Manual

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Motor Modules Chassis-2

7.7 Operating a Motor Module Chassis-2 on a non-grounded line supply (IT line system)

Operating a Motor Module Chassis-2 on a non-grounded line supply

(IT line system)

When operating a Motor Module Chassis-2 on an ungrounded line supply (IT line system),

an isolating transformer must be connected at terminal strip X51 upstream of the fan power

Damage to the device if an isolating transformer is not used when connected to an

ungrounded line supply

If, for an ungrounded line supply (IT line system), an isolating transformer is not connected

upstream of the fan power supply, then this can cause significant damage to the device.

• For an ungrounded line supply system (IT system), connect an isolating transformer

upstream of the fan power supply.

Air-cooled chassis power units

Manual, 07/2019, 6SL3097-4AE00-0BP9

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