ABB ACS 600 MultiDrive, Hardware Manual

Page: 9 / 94

Safety Instructions
ACS/ACC/ACP 604/607 Frequency Converters ACx = ACS/ACC/ACP vii
Without Filtering
Below is a diagram of
Ó
LL
and
du/dt as a function of cable length when
no du/dt filter is used.
With du/dt Filter Below is a diagram of
Ó
LL
and du/dt as a function of cable length with
du/dt filter at the output of the ACx 600.
Symbol Definition
U
N
nominal mains voltage
Ó
LL
peak line to line voltage at motor terminals
Rise time
:
t
= 0.8 ·
Ó
LL
/(du/dt)
Rise time is line to line voltage change rate
at motor terminals (the interval during
which the voltage changes from 10 % to
90 % of the whole voltage range)
Û
LL
and t depend on cable length. R
HDG
WKHYDOXHVRIÓ
LL
and du/dt from the
diagrams below.
du/dt / (kV/
µ
s)
Ó
LL
/ U
N
Cable length (m) 0
100 200 300 400
4
3.5
3
2.5
2
1.5
1
0.5
0
Cable length (m)
du/dt / (kV/
µ
s)
Ó
LL
/ U
N
4
3.5
3
2.5
2
1.5
1
0
100 200 300 400
0.5
0