Hioki PQ3198, Инструкция по эксплуатации

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A
7
App
e
ndix
Frequency cycle
Measurement method:
• Frequency for every U1 (reference channel) waveform, calculated using the reciprocal method.
• When the measurement frequency is set to 400 Hz, the frequency cycle is calculated as the reciprocal of the accumu-
lated whole-cycle time during 8 cycles.
• The frequency cycle is calculated as the average frequency for 8 waveforms.
Event IN and OUT:
Event IN : Start time of waveform exceeding ±threshold
Event OUT : Start time of waveform returning to ±(threshold -0.1 Hz)
Note Equivalent to 0.1 Hz frequency hysteresis.
1 frequency cycle 1 frequency cycle . . . . .
Approx. 200 ms aggregation
Voltage Waveform Peak, Current Waveform Peak, RMS Voltage, RMS Cur-
rent, Active Power, Reactive Power, Apparent Power, Power Factor, and Dis-
placement Power Factor
Measurement method:
• Events are detected when the value in question calculated
from the approx. 200 ms aggregation of 10 cycles (50 Hz), 12
cycles (60 Hz), or 80 cycles (400 Hz) is greater than or less
than the threshold.
• RMS values are calculated from an approx. 200 ms aggrega-
tion of 10 cycles (50 Hz), 12 cycles (60 Hz), or 80 cycles (400
Hz) as per IEC61000-4-30.
Event IN and OUT:
Event IN : Start of the approx. 200 ms aggregation in which the
reading is greater than the upper limit or less than
the lower limit
Event OUT : Start of the first approx. 200 ms aggregation in which
the reading is less than (the upper limit - hysteresis)
after being greater than the upper limit, or in which
the reading is greater than (the lower limit + hyster-
esis) after being less than the lower limit
Sense : Sense events are detected when the reading is
greater than or less than the sense upper limit be-
tween the event IN and event OUT.
(When event OUT conditions are fulfilled, the event
OUT takes precedence.)
50 Hz: 10 waveforms; 60 Hz: 12 waveforms; 400 Hz:
80 waveforms
RMS value calculation
RMS voltage (upper limit)
Sense
Hysteresis
RMS
value
Threshold
Sense Sense
EVENT
OUT
EVENT
IN
HIOKI PQ3198A961-03