Grounding System Compatibility Check; Emc Filter; Ground-To-Phase Varistors; When To Disconnect Emc Filter Or Ground-To-Phase Varistor: Tn-S, It, Corner-Grounded Delta And Midpoint-Grounded Delta Systems - ABB ACS580 Series Hardware Manual

132 Electrical installation – Global (IEC)

Grounding system compatibility check

The standard drive can be an be installed to a symmetrically grounded TN-S system.
For other systems, see sections
below.
￭

EMC filter

A drive with EMC filter connected can be installed to a symmetrically grounded
TN-S system. If you install the drive to another system, you may need to disconnect
the EMC filter. See sections
varistor: TN-S, IT, corner-grounded delta and midpoint-grounded delta
systems (page 132), and
WARNING!
Do not install the drive with the EMC filter connected to a system that the
filter is not suitable for. This can cause danger, or damage the drive.
Note: When the internal EMC filter is disconnected, the drive EMC compatibility is
considerably reduced. See
￭

Ground-to-phase varistors

A drive with the ground-to-phase varistor connected can be installed to a
symmetrically grounded TN-S system. If you install the drive to another system,
you may need to disconnect the varistor. See sections
filter or ground-to-phase varistor: TN-S, IT, corner-grounded delta and
midpoint-grounded delta systems (page
to a TT system (page
WARNING!
Do not install the drive with the ground-to-phase varistor connected to a
system that the varistor is not suitable for. If you do, the varistor circuit can
be damaged.
￭
When to disconnect EMC filter or ground-to-phase varistor: TN-S, IT,
corner-grounded delta and midpoint-grounded delta systems
Requirements for disconnecting EMC filter and varistor and additional requirements
for different electrical power systems are given below.
EMC filter
When to disconnect EMC filter or ground-to-phase
Guidelines for installing the drive to a TT system (page
EMC compatibility and motor cable length (page
132), and
134).
and Ground-to-phase varistors (page 132)
When to disconnect EMC
Guidelines for installing the drive
134).
347).