Chapter 2 Installation
17
K
-
+
L
K
+
-
L
K
+
-
L
I
-
-
I
-
-
I
-
-
I
-
-
+
-
1
2
3
4
+
-
+
-
+
-
SW1
02-04017
PT
+
+
+
-
-
+
-
-
Switches
Shorting
CT
LINE 1
LINE 3
LINE 2 (B)
(C)
(A)
LOAD
6
4
5
2
3
1
J9
6
5
4
3
1
2
GROUND
MAIN POWER
SUPPLY
125/220V DC
V
4
3
V
1
2
V
N
V
V
MEASUREMENT
DC
4N
V
125/220V DC
OR 120/230V AC
L/+
SW2
L/+
+ -
N/-
+
-
N/-
MAIN
POWER SUPPLIES
BACKUP
VDC
MEASURE
GND
12V
RS-422/485
INPUT VOLTAGE
IRIG-B
RS-422/485
J7
MODEM
J10
JP3
P.SUPPLY
4
1
COM3
J2
5
RDM
3
4
RS-485
3
+
4
-
2 1
RDM
8
+Rx
J1
2
1
+Tx
6
NOT CONNECTED
3
J11
5
3 4
-Rx
-Tx
1
2
USB
2
1
4
5
ETHERNET
1
7
8
J5
RS-232
COM1
JDR1
5
3
+Tx
1
J3
2
1
-Tx
3
1 2
+Rx
4 5
-Rx
4
5
COM2
6
7
8
6
9
CURRENT
INPUTS:
SA320 150A
SA310 150A
J14
J12
Figure 2-8
SA310, SA320:
Three Wire Open Delta Connection Using 2 PTs, 3 CTs (2
½
-element)
Wiring Mode =
3OP3