Installation Manual User guide

Chapter 2 Installation
16
N
K
-
+
L
K
+
-
L
K
+
-
L
I
-
-
I
-
-
I
-
-
I
-
-
+ -
1
234
+ - + - + -
03
-
05006
PT
+
-
+
-
+
-
+ -
MEASUREMENT
4N
INPUT VOLTAGE
V
1
V
J9
1
V
3
V
2
3
2
VV
N
4
5
4
6
SW1
96
JDR1
COM1
RS-232
5 1
1
RS-422/485
IRIG-B
J7
4
-Tx
J3
2
+Rx
1
+Tx
3
32
5
-Rx
4
5 6
12V GND
-
+
RDM
SUPPLY
MAIN POWE
R
GROUND
MEASURE
VDC
BACKUP
POWER SUPPLIES
MAIN
-
+
N/-
2
125/220V DC
J10
DC
+
1
N/-
L/+
-
SW2
3 4
L/+
5
6
OR 120/230V AC
125/220V DC
8
1
RS-485
ETHERNET
RS-422/485
MODEM
JP3
1
4
J1
COM2
7 8
+Rx
+Tx
12 4
-Rx
3
-Tx
5
1
J2
COM3
3
P.SUPPLY
4
RDM
5 3 2
4
USB
J11
2
3
2
4
1
6
5
7
Switches
Shorting
1
J5
8
LINE 1
LINE 3
LINE 2
(B)
(C)
(A)
LOAD
K
+
+
-
+
K
-
L
L
K
-
L
INPUTS
SA330 20A
CURRENT
SA330 150A
INPUTS
CURRENT
+
+
5
-
-
I
-
-
-
I
6
-
-
7
I
-
-
+
RELAY CT
s
METER CT
s
J14
J12
Figure 2-7a
SA330: Four Wire Wye Connection Using 2 PTs, 3 CTs (2
½-element)
Wiring Mode = 3LL3 or 3Ln3