Power Cable Connection Diagram - ABB ACS800-U4 Hardware Manual

Power cable connection diagram

* For alternatives,
see Electrical
installation
planning:
Disconnecting
device (means)
INPUT
U1
V1 W1
PE
1)
1)
(PE) PE (PE)
*
L1 L2
Ground the other end of the input cable shield /
PE conductor at the distribution board.
1) an alternative to the grounding of the drive and the motor through the cable shield or armour
Note: Connecting the fourth conductor of the motor cable at the motor end increases bearing
currents and causes extra wear.
2) used if the conductivity of the cable shield is < 50 % of the conductivity of the phase conductor.
3) For minimum radio frequency interference at the motor end:
• ground the cable shield 360 degrees at the lead-through of the motor terminal box
Conductive gaskets
• or ground the cable by twisting the shield as follows: flattened width > 1/5 · length. In the
figure below, b > 1/5 · a.
a
Drive module
UDC+
-
R R+
Optional brake
resistor
L3
360 degrees grounding
b
-
OUTPUT
UDC
U2
V2 W2
1)
V1
W1
U1
~
3
Motor
57
2)
3)
Installation