2)
For motors manufactured before 1.1.1998, check for additional instructions with the motor manufacturer.
This table shows the requirements when a non-ABB motor is in use.
Requirement forNominal AC supply
voltage
Motor
type
ABB du/dt and common mode filters, insulated N-end
motor bearings
Motor insula-
tion system
P
N
≥ 350 kW
or
frame size ≥ IEC 400
100 kW ≤ P
N
< 350
kW
or
IEC 315 ≤ frame size
< IEC 400
P
N
< 100 kW
and frame
size <
IEC 315
P
N
≥ 469 hp
or
frame size >
NEMA 580
134 hp ≤ P
N
< 469 hp
or
NEMA 500 ≤ frame
size ≤ NEMA 580
P
N
< 134 hp
and frame
size <
NEMA 500
+ N + CMF+ N or CMF-Standard:
Û
LL
= 1300 V
U
N
≤ 420 V
Random-
wound
and form-
wound
+ N + du/dt + CMF+ du/dt + (N or CMF)+ du/dt
Standard:
Û
LL
= 1300 V
420 V < U
N
≤ 500 V
or
+ N + CMF+ N or CMF-Reinforced:
Û
LL
= 1600 V,
0.2 micro-
second rise
time
+ N + du/dt + CMF+ du/dt + (N or CMF)+ du/dt
Reinforced:
Û
LL
= 1600 V
500 V < U
N
≤ 600 V
or
+ N + CMF+ N or CMF-Reinforced:
Û
LL
= 1800 V
+ N + du/dt + CMF+ du/dt + N+ du/dt
Reinforced:
Û
LL
= 1800 V
600 V < U
N
≤ 690 V
+ N + CMF+ N + CMF-
Reinforced:
Û
LL
= 2000 V,
0.3 micro-
second 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 in the applied drive
operation range.
The abbreviations used in the tables are defined below.
DefinitionAbbr.
Nominal AC line voltage
U
N
Peak line-to-line voltage at motor terminals which the motor insulation must withstand
Û
LL
Motor nominal power
P
N
du/dt filter at the output of the drivedu/dt
Common mode filterCMF
N-end bearing: insulated motor non-drive end bearingN
Motors of this power range are not available as standard units. Consult the motor manufacturer.n.a.
68 Guidelines for planning the electrical installation
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