01/02 AWB8230-1413GB
Electrical connection
31
Power terminal connection
Laying the cables
Lay the cables for the power section separately from the signal
cables and control cables.
The connected motor cables must be screened. The maximum
cable length must not exceed 50 m. With larger cable lengths, a
motor choke is required for d /d
t
limitation
If the cable leading from the frequency inverter to the motor is
longer than about 10 m, the fitted thermal overload relays
(bimetallic relays) may malfunction due to high frequency
harmonics. Install a motor filter on the output of the frequency
inverter in this case.
Tightening torques and conductor cross-sections
X
Tighten the cable connections according to table 5.
Table 5:
Tightening torques and conductor cross-sections for the power terminals
Warning!
Select a frequency inverter according to the available
supply voltage (
a
section “Technical Data”, page 159):
• DF6: Three-phase 400 V (342 to 528 V
g
0 %)
Warning!
Never connect mains voltage to the output terminals U, V
and W. Danger of electrical shock or fire.
Warning!
Each phase of the supply voltage for the frequency
inverter must be protected with a fuse (danger of fire).
Warning!
Make sure that all power cables are correctly tightened in
the power section.
Warning!
The frequency inverter must be earthed. Danger of
electrical shock or fire.
Warning!
To prevent inadvertent loosening, tighten the screws on
the terminals sufficiently (
a
table 5).
L1, L2, L3
L+, DC+, DC–, BR
U, V, W, PE
DF6-340-
mm
2
AWG
mm
O
Nm
Nm
11K
6
8
< 17
M6
6.5
4.9
1
–
15K
10
6
18K5
16
6
< 18
22K
25
4
30K
3
37K
35
1
45K
< 23
M8
8.5
–
–
8.8
55K
50
1/0
75K
2
x
35
2
x
1 (75 °C)
90K
< 29
M10
10.5
13.7
110K
2
x
50
2
x
1/0
132K
2
x
70
< 40
w
w
o
efesotomasyon.com - Klockner Moeller - inverter
