ABB ACS 600 MultiDrive - Page 19

Safety Instructions
ACS 600 MultiDrive 11
Note 1: The abbreviations and concepts used in the table are defined below.
Note 2: ACA 635 IGBT Supply Sections and the ACS/ACC 611
If voltage is raised by the ACA 635 or the ACS/ACC 611, select the motor insulation
system according to the increased intermediate circuit d.c. voltage level, especially in
the 500 V (+10%) supply voltage range.
Note 3: HXR and AMA Motors
All AMA machines (manufactured in Helsinki) to be supplied by a frequency converter
have form-wound windings. All HXR machines manufactured in Helsinki since 1997
have form-wound windings.
Note 4: Chopper Resistor Braking
When the drive is in braking mode for a large part of its operation time, the intermediate
circuit DC voltage of the drive increases, the effect being similar to increasing the
supply voltage by up to 20 percent. This should be taken into consideration when
determining the motor insulation requirement.
Example:
Motor insulation requirement for a 400 V application must be selected as if
the drive was supplied with 480 V.
Note 5: This table applies to NEMA motors with the following heading.
Abbreviation Concept Definition
- U
N
nominal mains voltage
-
Û
LL
= ... V peak line to line voltage at motor terminals which the
motor insulation withstands
- Rise time:
t = 0.8 ·
Û
LL
/(du/dt)
The time interval during which the line to line voltage
at motor terminals changes from 10 % to 90 % of the
whole voltage range.
Û
LL
and t depend on cable length. See the figures
below.
- P
N
motor nominal power
du/dt - du/dt filter
CMF Common mode filter 3 toroidal cores per each motor cable
LCMF Light common mode
filter
1 toroidal core per each motor cable
N N-bearing insulated motor non-driven end bearing
n.a. - Motors of this power range are not available as
stanadard units. Consult the motor manufacturer.
P
N
< 134 HP
and Frame Size < NEMA 500
134 HP < P
N
< 469 HP
or Frame Size >
NEMA 500
P
N
> 469 HP