ABB ACS550 Series, User Manual

Page: 272 / 310

272 ACS550 User’s Manual
Technical data
Motor cable length for 400 V drives
The table below shows the maximum motor cable lengths for 400 V drives with
different switching frequencies. Examples for using the table are also given.
WARNING! Using a motor cable longer than specified in the table above may cause
permanent damage to the drive.
Examples for using the table:
Maximum cable length for 400 V drives
Frame
size
EMC limits Operational limits
Second environment
(category C3
1
)
First environment
(category C2
1
) Basic unit
With
du/dt
filters 1 kHz 4 kHz 8 kHz 1 kHz 4 kHz 8 kHz 1/4 kHz 8/12 kHz
m ft m ft m ft m ft m ft m ft m ft m ft m ft
R1 300 980 300 980 300 980 300 980 300 980 300 980 100 330 100 330 150 490
R2 300 980 300 980 300 980 300 980 100 330 30 98 200 660 100 330 250 820
R3 300 980 300 980 300 980 300 980 75 245 75 245 200 660 100 330 250 820
R4 300 980 300 980 300 980 300 980 75 245 75 245 200 660 100 330 300 980
R5 100 330 100 330 100 330 100 330 100 330 100 330 300 980 150
2
490
2
300 980
R6 100 330 100 330
3 3
100 330 100 330
3 3
300 980 150
2
490
2
300 980
1
See the new terms in section IEC/EN 61800-3 (2004) Definitions on page 292 .
2
12 kHz switching frequency is not available.
3
Not tested.
Sine filters further extend the cable lengths.
Requirements Checking and conclusions
R1 frame size,
8 kHz fsw,
Category C2,
150 m (490 ft) cable
Check operational limits for R1 and 8 kHz -> for a 150 m (490 ft)
cable a du/dt filter is needed.
Check EMC limits -> EMC requirements for Category C2 are met
with a 150 m (490 ft) cable.
R3 frame size,
4 kHz fsw,
Category C3,
300 m (980 ft) cable
Check operational limits for R3 and 4 kHz -> a 300 m (980 ft) cable
cannot be used even with a du/dt filter. A sine filter must be used and
the voltage drop of the cable must be taken into account in the
installation.
Check EMC limits -> EMC requirements for Category C3 are met
with a 300 m (980 ft) cable.
R5 frame size,
8 kHz fsw,
Category C3,
150 m (490 ft) cable
Check operational limits for R5 and 8 kHz -> for a 150 m (490 ft)
cable the basic unit is sufficient.
Check EMC limits -> EMC requirements for Category C3 cannot be
met with a 300 m (980 ft) cable. The installation configuration is not
possible. An EMC plan is recommended to overcome the situation.
R6 frame size,
4 kHz fsw,
EMC limits not
applicable,
150 m (490 ft) cable
Check operational limits for R6 and 4 kHz -> for a 150 m (490 ft)
cable the basic unit is sufficient.
EMC limits do not need to be checked as there are no EMC
requirements.