Wiring To The Power Lines - Omron K7DD User Manual

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Wiring to the Power Lines

This section describes the wiring of the power lines that enable the K7DD to measure.
For Single-Phase AC
 Single-Phase Current
Connect a single special CT, and connect it to
the number 19 and 20 terminals of the K7DD.
Make sure to connect the cables according to
the directions of polarity terminals k and l on
the CT.
For 3-Phase AC
 3-Phase, 3-Wire, 2-Watt Meter Method (3P3W2M)
Connect 3 wires of voltage input and 2 special
CTs.
Connect the voltage inputs together closer to
the power source than to the special CTs.
Make sure to connect the cables according to
the directions of polarity terminals k and l on
the CT.
 3-Phase, 4-Wire (3P4W)
Connect 4 wires of voltage input and 3 special
CTs.
Connect the voltage inputs together closer to
the power source than to the special CTs.
Make sure to connect the cables according to
the directions of polarity terminals k and l on
the CT.
Power Line Data Generator User's Manual (N233)
3 Installation and Wiring
R S
MC
k
19
20
ℓ
M
R S T
MC
13
14
15
k
19
20
ℓ
k
21
22
ℓ
M
N R S T
MC
13
14
15
16
k
19
20
ℓ
k
21
22
ℓ
k
23
24
ℓ
M
3
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