Tolerances
Tolerances
It has to be observed, that the set pickup and release values (hysteresis) including tolerances, are always within
the permissible measuring range.
Real Time Clock Tolerances
Resolution:
1 ms
Tolerance:
<1 minute / month (+20°C)
<±1ms if synchronized via IRIG-B
Measured Values Tolerances
Phase and Earth Current Measuring
Max measuring range:
up to 40 x In (phase currents)
up to 25 x In (Earth current standard)
up to 2.5 x In (Earth current sensitive)
Please note:
The precision does not depend on the nominal
value but is referenced to 100 mA (with In =1 A)
respectively. 500 mA (with In = 5 A)
Frequency range:
50 Hz / 60 Hz ± 10%
Accuracy:
Class 0,5
Amplitude error if I < 1 x IN:
±0.5% of the rated value
Amplitude error if I > 1 x IN < 2 x IN:
±0.5% of the measured value
Amplitude error if I > 2 x IN:
±1.0% of the measured value
Resolution:
0.01 A
Harmonics
up to 20% 3rd harmonic ±1%
up to 20% 5th harmonic ±1%
Frequency influence
<±2% / Hz in the range of ±5 Hz of
the parameterized nominal frequency
Temperature influence
<±1% within the range of 0°C up to +55°C
Page 500
EN MRA4 04/09
Summary of Contents for SEG HighPROTEC MRA4
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