Additional Data For Calculating The Rise Time And The Peak Line-To-Line Voltage; Additional Note For Sine Filters; Additional Note For Common Mode Filters - ABB ACS800-U7 Hardware Manual
Acs800
45 to 560 kw; 50 to 600 hp
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Also See for ACS800-U7:
- Firmware manual (214 pages) ,
- Hardware manual (96 pages) ,
- Manual (42 pages)
Table of Contents
44
Additional data for calculating the rise time and the peak line-to-line voltage
If you need to calculate the actual peak voltage and voltage rise time considering the
actual cable length, proceed as follows:
• Peak line-to line voltage: Read the relative Û
diagram below and multiply it by the nominal supply voltage (U
• Voltage rise time: Read the relative values Û
appropriate diagram below. Multiply the values by the nominal supply voltage
(U
3.0
2.5
2.0
1.5
1.0
0.5
0.0
A
B
I
Û
/U
LL
N
(du/dt)/U
N
Note: ÛLL and du/dt values are approximately 20% higher with resistor braking.
Additional note for sine filters
Sine filters protect the motor insulation system. Therefore, du/dt filter can be
replaced with a sine filter. The peak phase-to-phase voltage with the sine filter is
approximately 1.5 · U
Additional note for common mode filters
Common mode filter is available as a plus code option (+E208) or as a separate kit
(one box including three rings for one cable).
Planning the electrical installation
) and substitute into equation t = 0.8 · Û
N
A
Û
/U
LL
N
100
200
Drive with du/dt filter
Drive without du/dt filter
Motor cable length
Relative peak line-to-line voltage
Relative du/dt value
.
N
LL
LL
LL
5.5
5.0
4.5
4.0
3.5
3.0
2.5
du/dt
------------ - (1/s)
U N
2.0
1.5
1.0
300
l (m)
/U
value from the appropriate
N
).
N
/U
and (du/dt)/U
N
N
/(du/dt).
B
du/dt
------------ - (1/s)
U N
Û
/U
LL
N
100
200
from the
300
l (m)
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