5.3 Measurement specifications
142
Power Factor Measurement Specifications (λ: Displayed as PF on panel display)
Phase Angle Measurement Specifications (φ: Displayed as ° on panel display)
Frequency Measurement Specifications
(f: Displayed as V Hz or A Hz on panel display)
Measurement types Rectifiers: AC+DC, AC, FND, AC+DC Umn
Effective measuring range As per voltage, current, and active power effective measurement ranges
Display range ±0.0000 to ±1.0000
Polarity Polarity is assigned according to the lead/lag relationship of the voltage waveform rising
edge and the current waveform rising edge.
+: When current lags voltage (no polarity display)
-: When current leads voltage
Polarity effective range With the AC+DC, AC, or AC+DC Umn rectifier:
Sine-wave input equivalent to at least 20% of the measurement range, frequency of
10 Hz to 20 kHz, phase difference of ±(1° to 179°)
Over-range display Displays [o.r] when [o.r] is displayed for the voltage or current.
Displays [o.r] when the apparent power is 0.
Invalid data display Displays [- - - - -] when using the DC rectifier.
Measurement types Rectifiers: AC, FND
Effective measuring range As per voltage, current, and active power effective measurement ranges
Display range +180.00 to -180.00
Polarity Polarity is assigned according to the lead/lag relationship of the voltage waveform rising
edge and the current waveform rising edge.
+: When current lags voltage (no polarity display)
-: When current leads voltage
Polarity effective range With the AC rectifier:
Sine-wave input equivalent to at least 20% of the measurement range, frequency of
10 Hz to 20 kHz, phase difference of ±(1° to 179°)
Over-range display Displays [o.r] when displaying [o.r] for the power factor.
Invalid data display Displays [- - - - -] when using the AC+DC, AC+DC Umn, or DC rectifier.
Number of measurement
channels
2
Measurement method Calculated from input waveform period (reciprocal method)
Measurement ranges 100 Hz/ 500 Hz/ 5 kHz/ 100 kHz (linked to zero-cross filter)
Measurement accuracy ±0.1% rdg. ±1 dgt. However, for 1 mA range, ±0.2% rdg. ±1 dgt.
(for the minimum frequency range setting that satisfies the measurement frequency)
Effective measuring range 0.1 Hz to 100 kHz
For sine wave input that is at least 20% of the measurement source’s measurement
range
Measurement lower limit frequency setting: 0.1 sec. / 1 sec. / 10 sec. (linked to synchro-
nization timeout setting)
Display format 0.1000 Hz to 9.9999 Hz, 9.900 Hz to 99.999 Hz, 99.00 Hz to 999.99 Hz,
0.9900 kHz to 9.9999 kHz, 9.900 kHz to 99.999 kHz, 99.00 kHz to 100.00 kHz
Over-range display Displays [o.r] when input falls outside the measurement range.
Default state Frequency range: 500 Hz
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