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Unidrive M / Unidrive HS Modular Installation Guide
Issue Number: 5
Figure 4-12 Layout for two Unidrive M / Unidrive HS size 9D/10D with twin size 11 rectifier operating on a 12 pulse phase shifted AC supply
* INL chokes may be omitted if:
1. The transformer is dedicated to the drive i.e. not shared with other equipment.
2. The transformer has reactances from primary to secondary and between secondaries of at least 4% based on the drive rating. This represents a
fully-wound transformer with loosely-coupled secondaries whose rating (kVA) does not much exceed the drive rating.
2
x IN
L
XXX
Lin
e re
a
c
to
r*
Fuses
Fuses
L3
L2
L1
L3
L2
L1
O
T
L
XXX
sh
a
r
in
g
ch
o
kes
U
V
W
O
T
L
XXX
sh
a
r
in
g
P
a
r
a
llell
in
g c
a
ble
ch
o
kes
9
D
9
D
1
0
D
1
0
D
9
D
9
D 1
0
D
1
0
D
11
+DC
-DC
U
V
W
Содержание unidrive m
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