ABB ACQ810, Руководство по оборудованию

Страница: 73 / 134

Electrical installation 73
Connecting the power cables
„
Connection diagram
1. For alternatives, see section Selecting the supply disconnecting device (disconnecting means) on page
51.
2. If shielded cable is used (not required but recommended) and the conductivity of the shield is < 50% of
the conductivity of the phase conductor, use a separate PE cable (2) or a cable with a grounding
conductor (3).
3. as 2)
4. 360 degrees grounding is recommended at the cabinet entry if shielded cable is used. Ground the other
end of the input cable shield or PE conductor at the distribution board.
5. 360 degrees grounding at the cabinet entry is recommended, see page 35.
6. 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 page
58 ).
7. du/dt filter or sine filter (optional, see page 131 ).
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.
INPUT
OUTPUT
U1 V1 W1
2)
U2 V2 W2
UDC+
R+
UDC
-
R
-
L1 L2 L3
(PE) (PE) PE
3)
ACQ810-04
PE
1)
4)
5)
U1
V1
W1
3
~
Motor
6)
7)