
Power Analyzer
Operation
27
Wiring System Comparison
3P4W3M
3P3W3M
3P3W2M
Number of channels occupied
3
3
2
Balanced test impedance
Yes
Yes
No
The power frequency components of
frequency conversion systems can be
eliminated
No
Yes
Yes
Phase voltage
Direct
measurement
Indirect
calculation
Indirect
calculation
Line voltage
Indirect
calculation
Direct
measurement
Partial direct
measurement
Common mode interference voltage
inputted
Low
Moderate
High
Zero line current measurement
Yes
Yes
No
Note
Where the current is measured may have some effect on the measurement results. To
mitigate this effect, consider where the voltage and current are measured. For a signal
with high voltage and low current, the voltage channel should be connected to the side
that is closest to the source, the current channel should be connected in series (or the
sensor should be placed) to the side that is closest to the load (as shown in the wiring
diagrams); for a signal with low voltage and high current, connect the voltage channel
to the side that is closest to the load, and connect the current channel in series (or the
sensor should be placed) to the side that is closest to the source. Please refer to the
appendix "
Measurement Error Caused by the Channel Resistance
Wiring Group
When you select a specific wiring selection, use a combination of 2 or more channels, which is called
a wiring group.
For example, when the wiring selection of channel 1 is set to 3P3W2M, channel 1 and channel 2 form
a wiring group.
Enter the Wiring Selection Configuration:
1. From the Main screen of any view mode select
A
(
Configure
) >
B
(
Wiring
).
2. The Configuration interface of wiring selection is as shown in
Содержание NORMA 6003
Страница 6: ......
Страница 98: ...NORMA 6003 NORMA 6003 NORMA 6004 NORMA 6004 User Manual 92 ...