YOKOGAWA WT310EH User Manual

6-1
IM WT310E-01EN
Harmonic Measurement (Option)
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App
Index
6.1 Harmonic Measurement Feature
The previous chapters described normal voltage, current, and power measurements. This chapter
describes the harmonic measurement feature.
The harmonic measurement feature can compute (1) the voltage, current, and active power for each
harmonicuptothe50thharmonic,(2)theharmonicdistortionfactorofeachharmonic,and(3)the
phase angles of each harmonic relative to the fundamental wave (1st harmonic). It can also compute
the rms voltage, rms current, and rms active power of the fundamental and harmonics as well as the
distortion factor (THD).
Displayed Items
This instrument displays the harmonic components of voltage, current, and active power. Depending
onthedisplayfunctionsetting,displaysA,B,C,andDchangeasshownbelow.
Display
Display function
Display function off
V A W
V
A
W
Display function off:
Display function V, A, W:
V A W
Shows the harmonic order (1 to 50).
Shows all rms voltages, currents, and active powers (computed values)
from the 1st to the 50th harmonic.
V
A
W
V %
A %
W %
V °
A °
: Shows the measured voltage for the harmonic order shown in display A.
: Shows the measured current for the harmonic order shown in display A.
: Shows the measured active power for the harmonic order shown in display A.
: Shows the harmonic distortion factor of voltage for the harmonic order shown in display A.
: Shows the harmonic distortion factor of current for the harmonic order shown in display A.
: Shows th
e harmonic distortion factor of active power for the harmonic order shown in display A.
: • When display A is showing the 1st harmonic (fundamental)
Shows the phase angle of the 1st harmonic current with respect to the fundamental voltage.
• When display A is showing a harmonic between 2 and 50
Shows the phase angle of the harmonic voltage with respect to the fundamental voltage.
: • When display A is showing the fundamental
Shows the phase angle of the fundamental current with respect
to the 1st order voltage (same as V °).
• When display A is showing a harmonic between 2 and 50
Shows the phase angle of the harmonic current with respect to the fundamental current.
Display function : Shows all rms voltages, currents, and active powers (computed values)
from the 1st to the 50th harmonic.
V, A, W
Display
V A W PF VHz AHz
THD V% THD A%
Display
Display
: Shows all rms voltages, currents, and active powers (computed values)
from the 1st to the 50th harmonic.
: Shows the power factor of the fundamental wave (1st harmonic).
: Shows the voltage frequency.
: Shows the current frequency.
: Shows the total harmonic distortion of voltage.
: Shows the total harmonic distortion of current.
Display function V, A, W
PF
VHz
AHz
THD V %
THD A %
D
C
B
A
W% VA%V% A
°
°
Chapter 6 Harmonic Measurement (Option)

YOKOGAWA WT310EH Specifications

General

Brand	YOKOGAWA
Model	WT310EH
Category	Measuring Instruments
Language	English