30
Figure 27
Positive sequence arrange is shown below, “A” hole , “B” hole and “C”
hole are connect A phase, B phase, C phase according to below form, and
when the three phase voltage is beyond 100v ,
LCD display Positive sequence test results. In Figure 35
positive sequence
hole
a
b
c
A
、
B
、
C phasic
A
B
C
B
C
A
C
A
B
test results
Positive sequence
(5)Three-phase four-wire loads, if it has no signal or a phase voltage less
than 100V, when, LCD display missing-phase test results
。
((6) Non-USB communication
。
Note: The positive and negative sequence detection voltage range of 100V
~ 500V.
True RMS Measurement and Average Value Measurement
The True RMS measurement method can measure accurately the effective
value of non-sine wave input signal.
Average value measurement method can measure the mean value of one
sine wave input signal, and then displays it as RMS value
When the input waveform has distortion, measuring tolerance will be
included. The total tolerance depends on the total distortion. Below table 1
shows the waveform coefficient and the relationship and the requested
changing factor of sine wave, square wave, pulse rectangle wave, sawtooth
triangle wave, RMS value and average value.
Specifications
