Woodward
Manual MRIK3-C EN
72
DOK-TD-MRIK3-C Rev. A
8. Technical Data
8.1
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
8.2
Common
data
Dropout to pickup ratio: >97%
Returning time:
40 ms
Boot time (Power-on-time)
< 50 ms
Minimum operating time:
40 ms
Minimum operating time including
boot
time
<100ms
Transient overreach at
instantaneous operation:
5%
Permissible interruption of the
supply voltage without affecting
the relay function:
>50ms
Climatic withstand
Storage:
-25°C ... +70°C
Operation:
-25°C ... +70°C
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%
