54
TB MRD1-G 11.01 E
8
Technical Data
8.1
MRD
- G Generator Differential Protection Relay
Common data
Rated frequency:
50 Hz, 60 Hz
Display:
LED and LCD-Display (2
×
16 digits)
Voltage supply
Aux. voltage ranges
Range
Rated voltage
Range
DC
L
24 V
19-40 V
M
48/60 V
38-72 V
H
110/125/220 V
88-264 V
AC
on request
Power consumption
stand-by
13 VA
maximum
16 VA
Permissible interruption of the
max. 50 ms (at rated voltage)
auxiliary voltage supply
Input CT
a) Phase current CT
Rated current I
N
1 A or 5 A
Power consumtion in current path:
at I
N
< 0.1 VA
Thermal withstand capability
in current circuit:
250
×
I
N
(VDE 435, T303),
dynamical current withstand (half-wave)
100
×
I
N
for 1 s
30
×
I
N
for 10 s
4
×
I
N
continuously (VDE 435, T303)
linear range
Low-Range
0.05...2
×
I
N
High-Range 2...64
×
I
N
Range setting
automatical
Resolution
12 Bit per range
Failure
< 0.1 % at I
N
< 0.1 % at 64
×
I
N
Accuracy
0.05
×
I
N
<2%
(related to the measured value)
1
×
I
N
<1%
15
×
I
N
<2%
Operating time
25-30 ms
C.T. requirements:
recommended min. requirements to expoit device accuracy 5P20