Chapter 2 Installation
9
LINE 1
LINE 3
LINE 2
(A)
(C)
(B)
LOAD
Shorting
K
-
+
L
K
+
-
L
COM2
COM1
USB
ETHERNET
COM3
RDM
MODEM
IRIG-B
+ -
GND
12V
+Tx
+Rx
-Tx
-Rx
+Tx
+Rx
-Tx
-Rx
V
V
1
2
4
4N
INPUT VOLTAGE
L/+ N/-
MAIN
POWER SUPPLIES
BACKUP
VDC
MEASURE
+ -
CURRENT
I
-
-
I
-
-
I
-
-
I
-
-
+
-
1
2
3
4
J9
J10
JDR1
J7
JP3
J2
J3
J1
J11
J5
RS-232
RS-422/RS-485
RS-422/RS-485
RS-485
1
5
6
9
1 2 3 4 5
1 2 3 4 5
5 4 3 2 1
4
1
2
1
3
4
1
8
1
2
3
4
5
6
7
8
+
-
+
-
+
-
1
2
3
4
5
6
L/+ N/-
RDM
P.SUPPLY
INPUTS:
GROUND
MAIN POWER
SUPPLY
SW2
SW1
125/220V DC
OR 120/230V AC
+
-
DC
MEASUREMENT
V
3
N
V
V V
J14
J12
CT
SA320 150A
SA310 150A
NOT CONNECTED
Switches
125/220V DC
02-04012
1
2
3
4
5
6
1
2
3
4
5
6
7
8
Figure 2-3
SA310, SA320:
Three Wire Direct Connection Using 2 CTs (2-element)
Wiring Mode
=
3dir2