56
TB MRI(K)3-C 03.02 E
7
Technical Data
7.1
Measuring input
Rated data:
Rated current I
N
1A or 5A
Rated frequency f
N
50/60 Hz adjustable
Power consumption in current path:
at I
N
= 1 A
0.2 VA
at I
N
= 5 A
0.1 VA
Power consumption in voltage path:
< 1VA
Thermal withstand capability
Of the current paths:
Current surge
(on 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
Fault recorder
Recorded tracks:
i
L1
, i
L2
, i
L3
, i
E
Sampling rate:
1.25 ms at 50 Hz
1.041 ms at 60 Hz
Storage capacity:
16 s (at 50 Hz) bzw
13.33 s (at 60 Hz)
Number of events:
1-8
7.2
Common data
Dropout to pickup ratio:
>97%
Returning time:
40 ms
Time lag error class index E:
±
20 ms
Minimum operating time:
40 ms
T5ransient overreach at
instantaneous operation:
≤
5%
Permissible interruption of the
supply voltage without affecting
the relay function:
50 ms
Influences on the current measurements
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%
Measuring errors at higher frequencies: 70Hz – 400Hz < 0.2% / Hz
Influences on delay time:
no additional influences can be measured
For further technical data see the general description „
MR
-Multifunctional Relay“.
