INVT RBU100H, Operation Manual, Page: 17 / 33

RBU100H operation manual 4 Installation guidelines
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4.6.2 Parallel connection of RBU100H (No master and slave)
R
S
T
U
V
W
R
S
T
R
S
T
r
s
t
S1
S2
S3
S4
COM
24V
S1
S2
S3
S4
COM
24V
Y
COM
M
PE
CN9
AO
GND
ROB
ROA
ROC
Y
COM
CN9
AO
GND
ROB
ROA
ROC
PE
r
s
t
PE
(+) (-)
(+) (-) (-) (+)
PE
Power supply Input filter
Input
reactor
VFD
Regenerative
reactor
It is recommended
to use fuse.
Regenerative
reactor
It is recommended
to use fuse.
RBU RBU
Figure 4-8 Parallel connection 2 of RBU100H
Note:

RBU100H 380V 22kW
–45kW has internal output reactor. RBU100H 380V 55kW–250kW/660V
55kW
–400kW has standard output reactor.

Each RBU100H has 1 standard input reactor. Select the input reactor according to the rated
parameters of the VFD.

The input filter is optional. Select the input filter according to the rated parameters of the VFD.

The fuse is optional. Configure the fuse at 1.5 times of the rated current of the RBU.

Derate 90% of the RBU100H in parallel connection.