ABB ACH480 Series - Disconnecting the Ground-To-Phase Varistor, or Connecting the EMC Filter; EMC;VAR Screw Location

￭ Disconnecting the ground-to-phase varistor, or connecting the EMC
filter
Before you continue, see When to disconnect ground-to-phase varistor, or connect EMC
filter (page 90). Obey the guidelines.
1.
Do the steps in section Electrical safety precautions (page 17) before you start the
work.
2. To disconnect the varistor, remove the metal VAR screw.
3. To connect the EMC filter, remove the plastic EMC screw, and replace it with the
metal screw included in the drive delivery.
EMC/VAR screw location
Frame R1…R2
Frame R4Frame R3
92 Electrical installation – North America