ABB ACH580-01 - Disconnecting Internal EMC Filter or Ground-To-Phase Varistor - Frames R4

4. To disconnect the ground-to-phase varistor, remove the varistor screw (4a) and
place it in the storage place (4b)
R2R1
4b
3b
4a
3a
B
A
8 mm
4b3b
4a
3a
B
A
R3
Screw
EMC (DC)A
VARB
4b3b
4a
3a
A
B
￭ Disconnecting internal EMC filter or ground-to-phase varistor - frames
R4…R9
To disconnect the internal EMC filter or ground-to-phase varistor, if needed, do as
follows:
1. Switch off the power from the drive.
2.
Open the cover, if not already opened. Frame R4: see page 123, frame R5: see page
129, frames R6…R9: see page 83.
120 Electrical installation – IEC