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PowerLogic ION7550 / ION7650 Installation Guide
14 © 2007 Schneider Electric. All rights reserved.
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
LINE
LOAD
Fuse for N/- terminal
required if its supply
source is ungrounded
Connect G terminal
to ground for AC
power source
V1 V2
V3
Vref
I11
I12
I21
I22
I31
I32
N/-L/+
G
3A
A
B
C
2A
Do not
connect
V4
I41
I42
I51
I52
LINE
LOAD
Fuse for N/- terminal
required if its supply
source is ungrounded
Connect G terminal
to ground for AC
power source
V1 V2
V3
Vref
I11
I12
I21
I22
I31
I32
N/-L/+
G
3A
A
B
C
2A
V4
I41
I42
I51
I52
LINE
LOAD
Fuse for N/- terminal
required if its supply
source is ungrounded
Connect G terminal
to ground for AC
power source