Siemens 9510, Installation Manual, Page: 14 / 28

14
3-Wire Solid-Grounded Wye, 3-Element, Direct Connection
When the common or star point of a 3-wire Wye system is grounded,
the meter may be connected directly without using PTs, provided that the
phase voltages are within the meter’s range.
VOLTS MODE = 4W-Wye
3-Wire Delta, 2½-Element, Direct Connection
600 V L-L max.
VOLTS MODE = Delta
3-Wire Delta, 2-Element 2 PTs & 2 CTs
Use PTs for voltages over 600 V L-L.
VOLTS MODE = Delta
V
1
V
2
V
3
V
ref
I
11
I
12
I
21
I
22
I
31
I
32
2A
A
B
C
N/- L / + G
3A
N
V
4
I
41
I
42
I
51
I
52
LINE
LOAD
Fuse for N/- terminal
required if its supply
source is ungrounded
Connect G terminal
to ground for AC
power source
V
1
V
2
V
3
V
ref
I
11
I
12
I
21
I
22
I
31
I
32
N/- L / + G
3A
A
B
C
2A
Do not
connect
V
4
I
41
I
42
I
51
I
52
LINE
LO
AD
Fuse for N/- terminal
required if its supply
source is ungrounded
Connect G terminal
to ground for AC
power source
V
1
V
2
V
3
V
ref
I
11
I
12
I
21
I
22
I
31
I
32
N/- L / + G
3A
A
B
C
2A
V
4
I
41
I
42
I
51
I
52
LINE LOA
D
Fuse for N/- terminal
required if its supply
source is ungrounded
Connect G terminal
to ground for AC
power source