Motor Cable Length For 400 V Drives - ABB ACS550 User Manual

272

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.
Frame
size
R1
R2
R3
R4
R5
R6
1
See the new terms in section
2
12 kHz switching frequency is not available.
3
Not tested.
Sine filters further extend the cable lengths.
WARNING! Using a motor cable longer than specified in the table above may cause
permanent damage to the drive.
Examples for using the table:
Requirements
R1 frame size,
8 kHz fsw,
Category C2,
150 m (490 ft) cable
R3 frame size,
4 kHz fsw,
Category C3,
300 m (980 ft) cable
R5 frame size,
8 kHz fsw,
Category C3,
150 m (490 ft) cable
R6 frame size,
4 kHz fsw,
EMC limits not
applicable,
150 m (490 ft) cable
Technical data
Maximum cable length for 400 V drives
EMC limits
Second environment
1
(category C3 )
1 kHz 4 kHz 8 kHz
m ft m ft m
300 980 300 980 300 980 300 980 300 980 300 980 100 330 100 330 150 490
300 980 300 980 300 980 300 980 100 330 30
300 980 300 980 300 980 300 980 75 245 75 245 200 660 100 330 250 820
300 980 300 980 300 980 300 980 75 245 75 245 200 660 100 330 300 980
100 330 100 330 100 330 100 330 100 330 100 330 300 980 150
3
100 330 100 330
IEC/EN 61800-3 (2004) Definitions
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.
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.
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.
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.
First environment
1
(category C2 )
1 kHz 4 kHz
ft m ft m ft m
3
100 330 100 330
Checking and conclusions
ACS550 User's Manual
Operational limits
Basic unit
8 kHz 1/4 kHz 8/12 kHz
ft m ft m
98 200 660 100 330 250 820
2
490
2
3 3
300 980 150 490
on page 292.
With
du/dt
filters
ft m ft
2
300 980
2
300 980