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4.2.3 Measuring Ranges
Values of measured quantities for which errors are defined.
Voltage 70 .. 120% of nominal
Current 5 .. 120% of nominal
Frequency 45 .. 66 Hz, 360 .. 440 Hz (Model 0440)
Crest values of voltage and current must remain within
168% of nominal maximum rms values
4.2.4 Accuracy
Voltage 0.4% of reading ±0.1% of range
1% of range maximum for Model 0440
Current 0.4% of reading ±0.1% of range
1% of range maximum for Model 0440
Frequency (not 0340) 0.15% of mid frequency
1% of mid frequency for Model 0440
Temperature coefficient 0.013%/°C typical
Response time to step input 1.5 seconds approx.
Screen update time 0.5 second approx.
4.2.5 Reference conditions of influence quantities
Values that quantities which affect measurement errors to a minor degree
have to be for the intrinsic (headline) errors for measured quantities to apply.
Ambient temperature 23°C
Input frequency 50 or 60 Hz 2%
Input waveform Sinusoidal (distortion factor 0.005)
Auxiliary supply voltage Nominal 1%
Auxiliary supply frequency Nominal 1%
Auxiliary supply distortion factor 0.05
Magnetic field of external origin Terrestrial flux
4.2.6 EMC Standards
EMC Immunity EN61326 for Industrial Locations to performance criterion A
EMC Emissions EN61326 to Class B - Domestic
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Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03