16-9
IM 760401-01E
Specifications
16
Item Specifications
Display items During Harmonic Measurement
• Display function
V (voltage of harmonic signal) A (current of harmonic signal)
W (active power of harmonic signal) PF (power factor of fundamental signal)
V% (total harmonic distortion of voltage THD/relative harmonic content of each harmonic order)
A% (total harmonic distortion of current THD/relative harmonic content of each harmonic order)
W% (relative harmonic content of each harmonic order of active power)
Vdeg (phase angle of each harmonic component of voltage)
Vdeg (phase angle of each harmonic component of current)
VHz (frequency of the voltage set to be the PLL synchronization source)
AHz (frequency of the current set to be the PLL synchronization source)
For details, see “Displayed Items” on page 7-1.
• Display area
• Display A
V, A, W, harmonic order
• Display B
V, A, W, PF, V%, A%, W%, Vdeg, Adeg
• Display C
V, A, W, VHz, AHz
Element Select the input element or Σ on the WT230 Displays the display item of the selected element.
Maximum display During normal measurement
(display range) Displayed item When the number of displayed When the number of displayed
digits is 5 digits is 4
V, A, W, VA*, var* 99999 9999
PF* 1.0000 to –1.0000 1.000 to –1.000
deg* G180.0 to d180.0 G180.0 to d180.0
VHz*, AHz* 99999 9999
Wh, Wh±, Ah, Ah±
• When the unit is MWh or MAh
999999 999999
(–99999 for negative watt hour and ampere hour.)
• When the unit is other than MWh or MAh
99999 99999
TIME See “Note” on page 6-8.
Efficiency 0.00 to 999.99 0.00 to 999.99
(WT230 only)
Crest factor 9999 9999
Four arithmetic 9999 9999
operation
Average active 9999 9999
power
Voltage peak, 9999 9999
current peak
During harmonic measurement
Displayed item When the number of displayed When the number of displayed
digits is 5 digits is 4
V, A, W 99999 9999
PF 1.0000 to –1.0000 1.000 to –1.000
V%, A%, W% (relative harmonic content)
0.000 to 99.999 to 0.00 to 99.99 to
100.00 to 999.99% 100.0 to 999.9%
V%, A%(THD) 0.00 to 99.99 to 0.00 to 99.99 to
100.0 to 999.9% 100.0 to 999.9%
Vdeg, Adeg
• Phase angle of the 1
st
order current with respect to the 1
st
order voltage
G180.0 to d180.0 G180.0 to d180.0
• Phase angle of the 2
nd
order and higher orders of voltage with respect to the 1
st
order voltage
–180.0 to 180.0 –180.0 to 180.0
• Phase angle of the 2
nd
order and higher orders of current with respect to the 1
st
order current
–180.0 to 180.0 –180.0 to 180.0
* The computation accuracy (the value calculated from the measured value) is one-half the display resolution.
16.3 Functions
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