Seg HighTECH Line - Page 32

32 TD_MRI1_06.05_GB
7 Technical data
7.1 Measuring input circuits
Rated data: Nominal current I
N
1A or 5A
Nominal voltage U
N
100 V, 230 V, 400 V
Nominal frequency f
N
50 Hz; 60 Hz adjustable
Power consumption in
current circuit: at I
N
= 1 A 0.2 VA
at I
N
= 5 A 0.1 VA
Power consumption in
voltage circuit: < 1 VA
Thermal withstand capability
in current circuit: dynamic current withstand
(half-wave) 250 x I
N
for 1 s 100 x I
N
for 10 s 30 x I
N
continuously 4 x I
N
Thermal withstand in
voltage circuit: continuously 1.5 x U
N
7.2 Common data
Dropout to pickup ratio: > 97 %
Returning time : 30 ms
Time lag error class index E: ± 10 ms
Minimum operating time: 30 ms
Transient overreach at
instantaneous operation: ≤ 5 %
Influences on the current measurement
Auxiliary voltage: in the range of 0.8 <U
H
/ U
HN
<1.2
no additional influences can be measured
Frequency: in the range of 0.9 < f/f
N
< 1.1; < 0.2 % / Hz
Harmonics: up to 20 % of the third harmonic; < 0.08 % per percent of the third harmonic
up to 20 % of the fifth harmonic; < 0.07 % per percent of the fifth harmonic
Influences on delay times: no additional influences can be measured