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18.1 Product Specifications
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5
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8
5
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0
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A
Measurement display
Active power integration: Displays power consumption,
regenerative power, and addition (simple addition)
Reactive power integration: Displays delay and lead for each
phase, total value (sum of absolute values)
* The display items and the integration calculation formulas
depend on the reactive power measurement method setting.
(Refer to Table 3.)
■ Power factor measurement
Measurement range
-1.000 (lead) to 0.000 to +1.000 (lag)
Accuracy
±1 dgt. for each calculation from measured values
Polarity display
When the current lags the voltage: unsigned; when the current
leads the voltage: "-"
■ Frequency measurement
Measurement range
40.00 to 500.0 Hz
Measurable input range
10% to 110% of range (only up to 100% for the 600 V range,
however)
Measurement source
Voltage U1, or current I1 (same as the PLL synchronization
source)
Accuracy
±0.5% rdg. ±1 dgt.
■ Other Characteristics
Frequency characteristics
For a base frequency from 45 Hz to 66 Hz, up to the 50 th order
of the base wave: ±3%f.s. + measurement accuracy
For a base frequency from 360 Hz to 440 Hz, up to the 7 th
order of the base wave: ±3%f.s. + measurement accuracy
Temperature coefficient
Not more than ±0.1%f.s./℃
Effect of same phase voltage
Not more than ±0.2%f.s. (600 VrmsAC, 50/60 Hz, voltage input
terminal shorted with case)
Effect of external magnetic field
Not more than ±1.5%f.s. (in a 400 Arms/m AC, 50/60 Hz
magnetic field)
Real-time clock accuracy
±25 ppm ±1 s (25℃)(77F)
Effect of radiated radio-
frequency electromagnetic field
At 3 V/m Voltage: within 3.00 V
Current: within 0.05 A
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