ABB PN 6644424A1 NEW,READY SHIPPED

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6644424A1

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ABB PN 6644424A1 
The voltage of the pulses can be almost double at the motor terminals, depending onthe attenuation and reflection properties of the motor cable and the terminals. This inturn can cause additional stress on the motor and motor cable insulation.Modern variable speed drives with their fast rising voltage pulses and high switchingfrequencies can generate current pulses that flow through the motor bearings, whichcan gradually erode the bearing races and rolling elements.The stress on motor insulation can be avoided by using optional ABB du/dt filters.du/dt filters also reduce bearing currents.


                                                          ABB PN 6644424A1

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