Siemens 9700, Руководство по установке, Страница: 23 / 45

32:(50(7(5,167$//$7,21$1'%$6,&6(783
3-Wire Delta, 2½-Element, 2 PT & 3 CT Connection Diagram
V1
V1
V2
V2
V3 V3
Vref
I1 I11
I12
I21
I2
I22
I3
I31
I32
I4
I41
I42
+
L/+
_
N/-
3 A slow-blow
3 A slow-blow
Switchgear
Chassis Ground
Supply Power
(dependent on equipped
power supply option)
LOAD
Import
Export
CTs
LINE
A B C
Fuses
PTs
Fuses
2A
CT Shorting Switch
or Test Block
3-Wire Delta, 2-Element, 2 PT & 2 CT Connection Diagram
V1
V2
V3
V1
V2
V3
Vref
Fuses
2A
I1
I2
I11
I12
I21
I22
I31
I32
I41
I3
I42
I4
_
+
L/+
N/-
3 A slow-blow
Switchgear
Chassis Ground
LOAD
Import
Export
CTs
PTs
Fuses
LINE
C
B A
CT Shorting Switch
or Test Block
3 A slow-blow
Supply Power
(dependent on equipped
power supply option)
2
38)
For ungrounded (floating) 3-
wire open Delta systems,
the 9700 Power Meter
always requires PTs, and
senses the line-to-line
voltages between each of
the phases. The 9700
Power Meter can be
connected using 3 CTs or 2
CTs.
VOLTS MODE should be set
to DELTA.
2
38)
For ungrounded (floating) 3-
wire open Delta systems,
the 9700 Power Meter
always requires PTs, and
senses the line-to-line
voltages between each of
the phases.
VOLTS MODE should be set
to DELTA.