ABB ACS880-07XT Series, Hardware Manual, Page: 59 / 168

Guidelines for planning the electrical installation 59
The abbreviations used in the table are defined below.
Non-ABB motors
Random
-wound
and
form-
wound U
N
< 420 V Standard:
Û
LL
= 1300 V
+ N or CMF + N + CMF
1)
420 V < U
N
< 500 V Standard:
Û
LL
= 1300 V
+ d u /d t + (N or CMF) + N + d u /d t + CMF
or
Reinforced:
Û
LL
= 1600 V,
0.2
microsecond
rise time
+ N or CMF + N + CMF
1)
500 V < U
N
< 600 V Reinforced:
Û
LL
= 1600 V
+ d u /d t + (N or CMF) + N + d u /d t + CMF
or
Reinforced:
Û
LL
= 1800 V
+ N or CMF + N + CMF
1)
600 V < U
N
< 690 V Reinforced:
Û
LL
= 1800 V
+ d u /d t + N + N + d u /d t + CMF
Reinforced:
Û
LL
= 2000 V,
0.3
microsecond
rise time ***
N + CMF + N + CMF
1)
*** If the intermediate DC circuit voltage of the drive is increased from the nominal level by resistor braking,
check with the motor manufacturer if additional output filters are needed in the applied drive operation
range.
1)
also d u /d t filter is required at the output of the basic drive modules if the motor cable length is less than
20 meters before connecting the motor cables together
Abbreviation Definition
U
N
Nominal AC line voltage
Û
LL
Peak line-to-line voltage at motor terminals which the motor insulation must withstand
P
N
Motor nominal power
d u /d t d u /d t filter at the output of the drive
CMF Common mode filter (E208)
N N-end bearing (Insulated motor non-drive end bearing)
n.a. Motors of this power range are not available as standard units. Consult the motor
manufacturer.
Motor
type
Nominal AC supply
voltage
Requirement for
Motor
insulation
system
ABB d u /d t and common mode filters, insulated N-end
motor bearings
100 kW < P
N
< 350 kW
or
IEC 315 < frame size <
IEC 400
P
N
> 350 kW
or
frame size > IEC 400
134 hp < P
N
< 469 hp
or
NEMA 500 < frame size <
NEMA 580
P
N
> 469 hp
or
frame size > NEMA 580