Hioki PQ3198, Instruction Manual

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13.2 Input Specifications/Output Specifications/Measurement Specifications
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Measurement accuracy Same as for RMS voltage refreshed each half-cycle
Period: Within half a cycle of the start accuracy time, within half a cycle of the end accuracy time
(not specified for 400 Hz measurement)
Event threshold Percentage of the nominal voltage
Event IN Start of the waveform for which the RMS voltage refreshed every cycle exceeded the threshold in
the negative direction
Event OUT Start of the waveform for which the RMS voltage refreshed each half-cycle exceeded the value
calculated by adding the hysteresis to the threshold
Multiple-phase system treatment Starts when all of the U1 to U3 channels experience an interruption and ends when the interruption
ends for any of the channels.
Saved waveforms Event waveforms
Fluctuation data RMS data refreshed each cycle is saved from 0.5 s before to 29.5 s after the EVENT IN. When set
to 400 Hz, RMS data refreshed each cycle is saved from 0.125 s before to 7.375 s after.
(8) Interruption (Intrpt)
(9) Instantaneous flicker value (Pinst)
Measurement method As per IEC61000-4-15
User-selectable from 230 V lamp/120 V lamp (when Pst and Plt are selected for flicker measure-
ment)
Displayed item Instantaneous flicker value
Measurement range, resolution 99.999, 0.001
Measurement accuracy -
Event threshold N/A
(10) Frequency 200 ms (Freq)
Measurement method Reciprocal method
Calculated as the reciprocal of the accumulated whole-cycle time during approx. 200 ms period of
10, 12, or 80 U1 (reference channel) cycles.
Displayed item Frequency 200 ms
Measurement range When the measurement frequency is set to 50 Hz/60 Hz: 70.000 Hz
When the measurement frequency is set to 400 Hz
: 440.00 Hz
Measurement accuracy When the measurement frequency is set to 50 Hz/60 Hz: ± 0.020 Hz or less
When the measurement frequency is set to 400 Hz : ± 0.20 Hz or less (with input voltage of
4% f.s. to 110% f.s.)
Event threshold Specified as deviation from 0.1 Hz to 9.9 Hz in 0.1 Hz increments
Event IN Start of approx. 200 ms aggregation in which ± threshold was exceeded
Event OUT Start of approx. 200 ms aggregation in which reading returned to ± (threshold - 0.1 Hz)
Note: Equivalent to 0.1 Hz frequency hysteresis.
Multiple-phase system treatment None
Saved waveforms Event waveforms
(11) 10-sec frequency (Freq10s)
Measurement method Reciprocal method
Calculated as the reciprocal of the accumulated whole-cycle time during the specified 10 s period
for U1 (reference channel) as per IEC61000-4-30.
Displayed item 10-sec frequency
HIOKI PQ3198A961-03