Appendix B Powering The Ac Fans Of R7 And R8 - ABB ACS800 Application Manual

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Appendix B Powering the AC fans of R7 and R8

If the supply of frame size R7 or R8 is not connected to the main supply, the AC fan
must be powered separately.
Feed the primary of the fan circuit transformer with the converter's nominal main
supply voltage, V- and W-phases, via the built-in fan circuit. The original cables
between the busbars and the fuses have to be removed. The feeding cable must be
protected against short circuits despite of the used built-in fuses.
The fuse locations are shown in the following picture.
R7
R8
Appendix B Powering the AC fans of R7 and R8
500 V 690 V