Additional Data For Calculating The Rise Time And The Peak Line-To-Line Voltage - ABB ACS580-04 Hardware Manual

70 Guidelines for planning the electrical installation
Nominal AC supply
voltage
U ≤ 420 V
N
420 V < U < 500 V
N
500 V < U ≤ 600 V
N
600 V < U ≤ 690 V
N
1) If the intermediate DC circuit voltage of the drive is increased from the nominal level due to long term resistor braking
cycles, check with the motor manufacturer if additional output filters are needed in the applied drive operation range.

Additional data for calculating the rise time and the peak line-to-line voltage

The diagrams below show the relative peak line-to-line voltage and rate of change of voltage
as a function of the motor cable length. 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
multiply it by the nominal supply voltage (U
• Voltage rise time: Read the relative values Û
below. Multiply the values by the nominal supply voltage (U
t = 0.8 · Û /(du/dt).
LL
Motor insulation system
Standard: Û = 1300 V
LL
Standard: Û = 1300 V
LL
or
Reinforced: Û = 1600 V,
LL
0.2 microsecond rise time
Reinforced: Û = 1600 V
LL
or
Reinforced: Û = 1800 V
LL
Reinforced: Û = 1800 V
LL
Reinforced: Û = 2000 V,
LL
0.3 microsecond rise
1)
time
Requirement for
ABB du/dt and common mode filters, insulated N-
end motor bearings
P < 100 kW or frame
N
size < IEC 315
P < 134 hp or frame size
N
< NEMA 500
+ N or CMF
+ du/dt + (N or CMF)
+ N or CMF
+ du/dt + (N or CMF)
+ N or CMF
+ N + du/dt
+ N + CMF
/U value from the diagram below and
LL N
).
N
/U and (du/dt)/U
LL N
) and substitute into equation
N
100 kW < P < 350 kW or
N
IEC 315 < frame size <
IEC 400
134 hp < P < 469 hp or
N
NEMA 500 < frame size <
NEMA 580
+ N or CMF
+ N + du/dt + CMF
+ N or CMF
+ N + du/dt + CMF
+ N + CMF
+ N + du/dt + CMF
+ N + CMF
from the diagram
N