Electrical installation
64
Power cable connection diagram
INPUT
OUTPUT
U1
V1
W1
3
~
Motor
L1
L2
L3
1)
U2 V2 W2
R+
R
-
L1
L2
L3
(PE)
(PE)
PE
2)
5)
Drive
PE
Grounding of the motor cable shield at the motor end
For minimum radio frequency interference:
• ground the cable shield 360 degrees at the lead-through of
the motor terminal box
• or ground the cable by twisting the shield as follows:
flattened width > 1/5 · length.
360 degrees grounding
Conductive gaskets
a
b
b > 1/5 · a
1), 2)
If shielded cable is used (not required but
recommended), use a separate PE cable (1) or a
cable with a grounding conductor (2) if the
conductivity of the input cable shield is < 50% of the
conductivity of the phase conductor.
Ground the other end of the input cable shield or PE
conductor at the distribution board.
3) 360 degrees grounding recommended if shielded
cable
4) 360 degrees grounding required
5) Use a separate grounding cable if the conductivity of
the cable shield is < 50% of the conductivity of the
phase conductor and there is no symmetrically
constructed grounding conductor in the cable (see
Planning the electrical installation
/
Selecting the
power cables
).
Note:
If there is a symmetrically constructed grounding
conductor in the motor cable in addition to the
conductive shield, connect the grounding conductor to
the grounding terminal at the drive and motor ends.
Do not use an asymmetrically constructed motor cable.
Connecting its fourth conductor at the motor end
increases bearing currents and causes extra wear.
External brake
resistor
(optional)
3)
4)
4)
Summary of Contents for ACS800-U7
Page 1: ...ACS800 Hardware Manual ACS800 07 Drives 45 to 560 kW ACS800 U7 Drives 50 to 600 hp ...
Page 4: ......
Page 28: ...Operation principle and hardware description 28 ...
Page 51: ...Planning the electrical installation 51 ...
Page 60: ...Planning the electrical installation 60 ...
Page 76: ...Electrical installation 76 ...
Page 84: ...Motor control and I O board RMIO 84 ...
Page 112: ...Maintenance 112 ...
Page 138: ...Dimensional drawings 138 Frame sizes R5 and R6 64778340_1 5 K ...
Page 139: ...Dimensional drawings 139 Frame sizes R7 and R8 68749930_1 7 C ...
Page 140: ...Dimensional drawings 140 IP54 and IP54R units of frame sizes R7 and R8 68749930_6 6 C ...
Page 148: ...3AFE64702165 Rev H EN 2012 09 19 Contact us www abb com drives www abb com drivespartners ...