ABB ACS2000 DFE - Grounding Switch; Grounding Circuit

34 ACS2000 DFE UM 3BHS360367 ZAB E01 REV. K
the nominal value, the capacitors in the phase
modules of the INU start to discharge as well.
Grounding switch
The grounding switch enables safe access to the
DFE - INU compartment of the drive.
When the switch is in position grounded, DFE (1),
DC link (2), INU (3) and output filter (4) of the drive
are connected to the PE ground bus (5).
The switch is electromechanically interlocked with
a discharge monitoring circuit to prevent closing
of the switch when the DC link is still charged.
Grounding the drive is only possible after the main
power supply has been disconnected and the DC
link has discharged.
—
References
—
2-7 Grounding switch
—
2-8 Grounding circuit
—
2-7
—
2-8
1
5
2
3
4