Tescom DS3550 User Manual page 45

CAUTION !!!
U1
V1
W1
N1
U2
V2
W2
N2
+ K1
-
K2
UPS1
K2
+
-
K3
AC OUTPUT1
BATTERIES
K12 K13 K14
U V W N
FUSES
AC DISTRIBUTION
Note: As seen in the figure, the outputs of parallel UPS units should be connected to each other
using an AC distribution board.
You must never set the operation modes of parallel connected UPS units to
"ONLINE", otherwise serious damage may occur in UPSs.
MAIN AC INPUT
BYPASS AC INPUT
+
-
+
-
BATTERIES
LOAD BRAKE
SWITCH
U V W N
LOAD
Figure 4.3 DS300 Series Parallel UPS Power Connections
K1
K2
UPS2
K2
K3
AC OUTPUT2
K12 K13 K14
U V W N
FUSES
AC
42
K1
+
-
K2
UPS3
K2
+
-
K3
AC OUTPUT3
BATTERIES
K12 K13 K14
U V W N
FUSES