ABB ACS880-04F-504A-3, Hardware Manual

Page: 65 / 202

100 200 300
0.0
0.5
1.0
1.5
2.0
2.5
3.0
/---- (1/
µ s)
U
n
---
u
--- -d-
t
-
d
l (m)
Û
LL
/
U
n
A
Û
LL
/
U
n
l (m)
d
u
/d
t
U
n
-------------(
1/ µ s
)
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 d u/dt filter A
Drive without d
u/dt filter
B
Motor cable length I
Relative peak line-to-line voltage
Û
LL
/
U
n
Relative d u/dt value (d u/dt)/U
n
Note: Û
LL
and d u/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
.
Selecting the power cables
￭ General guidelines
Select the input power and motor cables according to local regulations.
• Current: Select a cable capable of carrying the maximum load current and suitable
for the prospective short-circuit current provided by the supply network. The
method of installation and ambient temperature affect the cable current carrying
capacity. Obey local regulations and laws.
• Temperature: For an IEC installation, select a cable rated for at least 70 °C (158 °F)
maximum permissible temperature of conductor in continuous use.
For North America, select a cable rated for at least 75 °C (167 °F).
Important: For certain product types or option configurations higher temperature
rating may be required. See the technical data for details.
• Voltage: 600 V AC cable is accepted for up to 500 V AC. 750 V AC cable is accepted
for up to 600 V AC. 1000 V AC cable is accepted for up to 690 V AC.
To comply with the EMC requirements of the CE mark, use one of the preferred cable
types. See
Preferred power cable types (page 66) .
Symmetrical shielded cable reduces electromagnetic emission of the whole drive
system as well as the stress on motor insulation, bearing currents and wear.
Guidelines for planning the electrical installation 65