ABB ACS880-37LC-0390A-7, Hardware Manual, Page: 78 / 242

If you plan to use a non-ABB high-output motor or an IP23 motor, consider these additional
requirements for protecting the motor insulation and bearings in drive systems:
• If motor power is below 350 kW: Equip the drive and/or motor with the filters and/or
bearings according to the table below.
• If motor power is above 350 kW: Consult the motor manufacturer.
Requirement for Nominal AC supply
voltage
ABB du/dt and common mode filters, insulated N-
end motor bearings
Motor insulation system
100 kW < P
n
< 350 kW or
IEC 315 < frame size <
IEC 400
P
n
< 100 kW or frame size
< IEC 315
134 hp < P
n
< 469 hp or
NEMA 500 < frame size <
NEMA 580
P
n
< 134 hp or frame size
< NEMA 500
+ N or CMF + N or CMF Standard: Û
LL
= 1300 V U
n
≤ 420 V
+ N + d u /d t + CMF + d u /d t + (N or CMF) Standard: Û
LL
= 1300 V 420 V < U
n
< 500 V
or
+ N or CMF + N or CMF Reinforced: Û
LL
= 1600 V,
0.2 microsecond rise time
+ N + d u /d t + CMF + d u /d t + (N or CMF) Reinforced: Û
LL
= 1600 V 500 V < U
n
≤ 600 V
or
+ N + CMF + N or CMF Reinforced: Û
LL
= 1800 V
+ N + d u /d t + CMF + N + d u /d t Reinforced: Û
LL
= 1800 V 600 V < U
n
≤ 690 V
+ N + CMF + N + CMF
Reinforced: Û
LL
= 2000 V,
0.3 microsecond rise
time
1)
1) If the intermediate DC circuit voltage of the drive is increased from the nominal level due to long term resistor braking
cycles, check with the motor manufacturer if additional output filters are needed.
Additional note for sine filters
A sine filter also protects the motor insulation system. The peak phase-to-phase voltage
with a sine filter is approximately 1.5 ·
U
n
.
78 Guidelines for planning the electrical installation