3-6
CDA3000 Operation Manual
3 Electrical installation
3.4 Mains
connection
Attention: Danger to life! Never connect or disconnect electrical connec-
tions while the power is on! Before working on the device dis-
connect the power. Wait until the DC-link voltage at terminals
X1/RB+ and L- has fallen to the safety-low voltage before
working on the device (approx. 5 minutes).
Step Action Comment
1
Define the wire cross-section depend-
ent on maximum current and ambient
temperature.
Wire cross-section to VDE0100,
part 523
2
Wire the inverter module with the
mains filter, max. line length 0.3 m (with
unshielded cable)!
Step not applicable for BG1 to
BG4; up to 7.5 kW the mains
filter is built-in.
3
Wire the line choke
1)
.
Reduces the voltage distortions
(THD) in the system and extends
the service life.
4
Install a circuit-breaker K1
(power switch, contactor, etc.).
Do not connect the power!
5
Use the mains fuses (type gL) or minia-
ture circuit-breakers (trip characteristic
C) to cut the mains power to all poles of
the inverter.
To protect the line in accordance
with VDE636, part 1
1) See Appendix A.5
Figure 3.5 Mains connection
Attention: Please note
that the mains power
cable aund fuses used
must conform to the
specified listings (such
as cUL/CSA).
CDA34.xxx
CDA32.xxx
X1
L1
N
L1
K1
K1
L2
L3
L1
N
X1
L3
L1
L2
FN
< 0,3 m
3 x 400/460 V
1 x 230 V
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