Seg HighTECH MRG3 - 7 Technical Data; Measuring Input Voltage; Influences on the Voltage Measurement; Frequency Measurement

Manual MRG3 SEG Electronics GmbH
DOK-TD-MRG3, Rev. D 71
7. Technical data
7.1 Measuring input voltage
Rated data: Nominal voltage U
N
100 V or 400 V
see chapter 3.1.8 Code plugs
Nominal frequency f
N
50/60 Hz
Measuring range: 0 – 1.5 x U
N
Measuring accuracy: % from measuring value or 0.5% from rated value
Power consumption in: < 1 VA pro Phase bei U
N
voltage circuit
Thermal withstand capability
in voltage circuit: continuously 1.5 x U
N
see chapter 3.1.8 Code plugs Blocking the frequency
and vector surge measuring
at under voltage: adjustable (5% - 100% U )
Dropout to pickup ratio: U>/U>>:>99% U</U<<:<101%
Returning time: 60 ms
Time lag error class index E: ±10 ms
Minimum operating time: 40 ms
7.1.1 Influences on the voltage measurement
Auxiliary voltage: in the range of 0.8 <U
H
/U
HN
<1.2
no additional influences can be measured
Frequency: Within the range from 0.9 < f/f
N
< 1.1 , <0.2%/Hz,
only the first harmonic is evaluated.
7.2 Frequency measurement
Rated data: Rated frequency: 50Hz or 60Hz
Measuring range: 50Hz: 30 – 70Hz
60Hz: 40 – 80Hz
Measuring accuracy: ±0.03Hz
Dropout to pickup ratio: f>:> 99.95 % f<:< 100.05%
7.2.1 Influences on the frequency measurement
Auxiliary voltage: in the range of 0.8 < U
H
/U
HN
< 1.2
No additional influences can be measured
Frequency: no influences
Influences on delay times: no additional influences can be measured