TB XRW1-4 04.01 E
29
8
Technical data
8.1
Measuring input circuits
Rated data:
Nominal voltage U
N
690
V
Nominal frequency f
N
50/60
Hz
Frequency range
40 - 70 Hz
Power consumption in
voltage circuit:
<1 VA per channel at rated
Thermal rating:
continuously
1.15 x U
N
Undervoltage lockout for
frequency and df/dt
measurement:
adjustable (5%...100% U
N
)
8.2
Common data
Dropout to pickup ratio:
for U>/U>> : >97%;
for U</U<< : <103%
for f>/f>> : >99.98%;
for f</f<< : <100.02%
Dropout time:
60 ms
Time lag error class index E:
±
10 ms
Minimum operating time:
U = 40 ms
f = 60 ms
df/dt = 60 ms
Influences on voltage measuring:
Aux. voltage:
in the range 0.8 <U
H
/U
HN
<1.2 no additional influences to be measured
Frequency:
in the range 0.8 <f / f
N
<1.4 (for f
N
= 50 Hz) <0.15% / Hz
Harmonics:
up to 20% of the 3rd harmonic <0.1% per percent of the 3rd harmonic
up to 20% of the 5th harmonic <0.05% per percent of the 5th harmonic
Influences on frequency measuring:
Aux. voltage:
in the range 0.8 <U
N
/U
HN
<1.2 no additional influences to be measured
Frequency:
no influences
Influences on delay time:
no additional influences to be measured
