11
3. Installation and Wiring
• The utility AC power must be three phases (R/S/T) and meet the specifications on the UPS rating label. When connecting the utility
input power to the UPS, make sure it is in positive phase sequence (clockwise phase rotation).
• Connect the external battery cabinet’s grounding terminal to the grounding terminal ( ) of the UPS system’s battery terminal block.
Do not connect the grounding terminal of the external battery cabinet to any other grounding system.
• The ground terminal ( ) of the UPS must be grounded. Use ring-type terminal for wiring.
WARNING:
1. Incorrect wiring will lead to severe electric shock and damage to the UPS.
2. The UPS will not work normally if the input power's neutral (N) is not firmly connected or is not connected to
the AC Input Block's neutral (N) terminal.
3.6.2 Single Unit Wiring
Note:
Prior to wiring, first read 3.6.1 Precautions Prior to Wiring.
Single Input (Single Unit)
When there is only one AC power source, single unit wiring procedures are as follows:
1
Remove the cover plates shown in
Figure 3-5
to access the wiring terminal block shown in
Figure 3-7
.
SUTX20K
SUTX40K
1 2
ON
P1 P2 P3 P4 P5 P6
P1 P2
PARALLEL PARALLEL
SWITCH
PARALLEL
REPO CHARGER
DETECTION
INPUT
DRY CONTACT
OUTPUT
DRY CONTACT
MANUAL BYPASS SWITCH
RS-232
WARNING:
OPENING THIS COVER PLATE WILL
CAUSE INVERTER SHUTDOWN.ONLY
AUTHORIZED SERVICE PERSONNEL
CAN OPEN AND OPERATE IT.
BYPASS BREAKER
INPUT BREAKER
UPS OUTPUT
N
T
S
R
-
N
240V DC 240V DC
AC INPUT
N
T
S
R
+
BATTERY INPUT
R
S
T
N
R
S
T
N
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
WARNING:
OPENING THIS COVER PLATE WILL
CAUSE INVERTER SHUTDOWN.ONLY
AUTHORIZED SERVICE PERSONNEL
CAN OPEN AND OPERATE IT.
1 2
ON
WARNING:
OPENING THIS COVER PLATE WILL
CAUSE INVERTER SHUTDOWN.ONLY
AUTHORIZED SERVICE PERSONNEL
CAN OPEN AND OPERATE IT.
MANUAL BYPASS SWITCH
P1 P2 P3 P4 P5 P6
P1 P2
PARALLEL PARALLEL
SWITCH
PARALLEL
REPO CHARGER
DETECTION
INPUT
DRY CONTACT
OUTPUT
DRY CONTACT
RS-232
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
I
O
ON
OFF
240V DC
240V DC
+
N
-
R
AC INPUT
S
T
N
UPS
OUTPUT
R
S
T
N
INPUT BREAKER
R
S
T
N
BYPASS BREAKER
R
S
T
N
BATTERY INPUT
UPS OUTPUT
N
T
S
R
-
N
240V DC 240V DC
AC INPUT
N
T
S
R
+
BATTERY INPUT
240V DC
240V DC
+
N
-
R
AC INPUT
S
T
N
UPS
OUTPUT
R
S
T
N
BATTERY INPUT
T
S
R
N
T
S
R
N
T
S
R
N
T
S
R
N
-
+
N
-
+
N
1
1
2
2
3
3
4
4
5
6
5
6
(Figure 3-5: Wiring Terminal Block)
