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2.11 Wiring the Circuit under Measurement When Using a Voltage or Current Transformer
Wiring Example of a Three-Phase, Four-Wire System (3P4W) with
VTs and CTs
Model: Applies to the WT333E.
The wiring is connected to input elements 1, 2, and 3.
SOURCE
R
S
T
N
L CT
Element 1
Wiring Example With the Three-Voltage, Three-Current Method
(3V3A) and VTs and CTs
Model: Applies to the WT333E.
The wiring is connected to input elements 1, 2, and 3.
SOURCE
R
S
T
L CT
Element 1
Note
For details about the relationship between the wiring system and how measured and computed values are
determined, see appendix 1, "Symbols and Determination of Measurement Functions."
IM WT310E-02EN
V
VT
L CT
v
±
V
C
±
Element 2
V
L CT
VT
v
±
V
C
±
Element 2
V
VT
L CT
v
±
V
C
±
Element 3
V
L CT
VT
v
±
V
C
±
Element 3
LOAD
V
VT
v
±
V
C
±
LOAD
V
VT
v
±
V
C
±
2-51
1
2
3
4
5
6
7
App
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