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Installation manual

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Note:
As seen in the figure, the outputs of parallel UPS units should be connected to each other using an AC
distribution board.
ATTENTION!!! The cables from each UPS output to the distribution board must be of the same size
and length for proper load sharing during parallel operation.
BATTERIES
Figure 4.3 PDSP Series Parallel UPS Power Connections
U
V
W
N
LOAD
FUSES
A
C OUTPUT
BYPASS AC INPUT
MAIN AC INPUT
AC DISTRIBUTION BOARD
U1
V1
W1
N1
U2
V2
W2
N2
+
-
+
-
UPS1
K3
K2
K2
K4
K5
K6
K7
K8
K9
K10
K11
K12
K13
K14
K1
U
V
W
N
AC OUTPUT1
+
-
+
-
BATTERIES
UPS2
K3
K2
K2
K4
K5
K6
K7
K8
K9
K10
K11
K12
K13
K14
K1
U
V
W
N
AC OUTPUT2
FUSES
+
-
+
-
BATTERIES
UPS3
K3
K2
K2
K4
K5
K6
K7
K8
K9
K10
K11
K12
K13
K14
K1
U
V
W
N
AC OUTPUT3
FUSES
LOAD BRAKE
SWITCH