Lenze 8230 Series - Page 77

Transport, Installation and Connection
72 BA8230
The recommended guidelines for copper cable cross-sections guarantee a voltage
drop of <3 % up to conductor temperatures of 50 °C. The values stated apply to a
400 V supply at rated current for frame size 1 up to approx. 80 m and for frame sizes
2, 3 and 4 up to approx. 160 m.
The maximum permitted cable lengths for connecting 3-phase asynchronous motors
to the 8230 frequency inverter are stated in Table 24.
Max. permissable motor cable lengths of the 8230 frequency inverter
8230 frequency inverter
Type
Max. suitable motor cable lengths, 8230 frequency inverter
Unscreened cable NYY/NYM
1)
Screened cable NYCWY
1)
no circuit
2)
with motor
choke
2) 4)
with motor
filter
3)
U
N
=400 V
f
p
=3 kHz
with motor
filter
3)
U
N
=460 V
f
p
=3 kHz
No circuit
2)
with motor
choke
2
with motor
filter
3)
U
N
=400 V
f
p
=3 kHz
with motor
filter
3)
U
N
=460 V
f
p
=3 kHz
[m] [m] [m] [m] [m] [m] [m] [m]
8231 300 400 400 300 250 350 300 200
150
5)
120
5)
200
5)
150
5)
8232 300 450 450 350 250 350 350 250
150
5)
120
5)
200
5)
150
5)
8233 300 450 450 350 250 350 350 250
150
5)
120
5)
200
5)
150
5)
8234 300 450 450 350 250 350 350 250
150
5)
120
5)
200
5)
150
5)
Table 24: Max. permitted motor cable lengths
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