Additional Data For Calculating The Rise Time And The Peak Line-To-Line Voltage - ABB ACH580-01 Hardware Manual

94 Guidelines for planning the electrical installation
Nominal AC supply
voltage
U n ≤ 420 V
420 V < U n < 500 V
500 V < U n ≤ 600 V
600 V < U n ≤ 690 V
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.

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
and 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
equation t = 0.8 · Û
Motor insulation sys-
tem
Standard: Û LL =
1300 V
Standard: Û LL =
1300 V
or
Reinforced: Û LL =
1600 V, 0.2 micro-
second rise time
Reinforced: Û LL =
1600 V
or
Reinforced: Û LL =
1800 V
Reinforced: Û LL =
1800 V
Reinforced: Û LL =
2000 V, 0.3 micro-
1)
second rise time
/(du/dt).
LL
Requirement for
ABB du/dt and common mode filters, insu-
lated N-end motor bearings
P n < 100 kW or frame
size < IEC 315
P n < 134 hp or frame
size < 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
LL n
).
n
/U and (du/dt)/U
LL n
100 kW < P n < 350 kW
or
IEC 315 < frame size
< IEC 400
134 hp < P n < 469 hp
or
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
) and substitute into
n