ABB ACH580-01 - Additional Note for Sine Filters

100 200 300
0.0
0.5
1.0
1.5
2.0
2.5
3.0
/
--
-
-
(1/ µs)
U
n
- - -
u
----
d
-
t
-
d
l (m)
Û
LL
/U
n
A
Û
LL
/U
n
l (m)
du/dt
U
n
-------------(1/µs )
1.0
2.0
5.0
4.0
3.0
1.5
2.5
3.5
4.5
100 200 300
5.5
B
Drive with du/dt filter
A
Drive without du/dt filter
B
Motor cable length
I
Relative peak line-to-line voltage
Û
LL
/U
n
Relative du/dt value(du/dt)/U
n
Note: Û
LL
and du/dt values are approximately 20% higher with resistor braking.
Additional note for sine filters
A sine filter also protects the motor insulation system. The peak phase-to-phase voltage
with a sine filter is approximately 1.5 · U
n
.
Guidelines for planning the electrical installation 95