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
Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03 | 47 |