ARTDriveG Instruction manual Chapter 5 - Wiring Procedure • 45
5.5.3. Parallel Connection on the AC (Input) and DC (Intermediate Circuit) Side of
Several Inverters
Features and Limits:
- The inverters used have to be all the same size.
- AC input line chokes (see chapter 5.7.1) have to be the same (provided by the same supplier).
- The mains power supply has to be simultaneous for all inverters, i.e. a single switch /line contactor has to be used.
- Such connection is suitable for a maximum of 6 inverters.
- If necessary dissipate braking energy; a single internal braking unit (with external resistor) has to be used or one
(or several) external braking unit (see manual: "BU32-...” , “BUy-...").
- Fast fuses (F12...F62) have to be fitted on the dc-link side ( C and D terminals) of each inverters (see chapter
5.6.2).
Figure 5.5.3.1: Parallel Connection on the AC and DC Side of Several Inverters
M1
3
M2
3
M6
3
F11 L1
F21 L2
F61 L6
U
V
W
U2
V2
W2
C
D
INVERTER 1
U
V
W
U2
V2
W2
C
D
INVERTER 2
BR
F12
F22
F62
U
V
W
U2
V2
W2
C
D
INVERTER 6
BR
CR
C
D
BU-32-...
(B y-...)U
78910
R
BR
F7
R
BR
L1
L2
L3
K1
M..
3
F.. L..
U
V
W
U2
V2
W2
C
D
INVERTER ..
F..
(*)
(*) Do not connect if external braking
units (BU32-.., BUy..) are used.
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