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7
7.3 Continuous Recorder
7.3.3
Continuous Mean Value Recorder for RMS-values (CRR)
The continuous mean value recorder for rms values – Continuous RMS-value Recorder (CRR) –
stores the arithmetic mean of the fundamental component rms values of currents, voltages and
symmetrical components for every recording interval. The mean value is always calculated over
the complete averaging time.
Table 7-27
Recording time
Averaging times
Usable DAUs
Recorded values
Table 7-28 provides an exact overview of the values recorded by the DAUs depending on the
input connection.
Table 7-28
Star connection
Delta connection
Monophase
The maximum recording time can be calculated using the following equation:
⋅
R M
t
=
------------- 0.178
max
D
where:
t
= maximum recording time in days
max
R
= averaging time in seconds
M
= parameterized memory space in megabytes (MByte)
D
= number of active VCDAUs, VDAUs and CDAUs
98
CRR – summary of technical data
Continuously
1 s, 2 s, 5 s, 10 s, 30 s, 60 s, 120 s, 240 s, 300 s, 360 s,
480 s, 600 s
VCDAU, VDAU, CDAU
Fundamental component rms values, symmetrical
components
Recorded values of the CRR
VCDAU
V
, V
, V
, V
L1
L2
L3
N
V
, V
, V
1
2
0
I
, I
, I
, I
L1
L2
L3
N
I
, I
, I
1
2
0
V
, V
, V
, V
L12
L23
L31
4
V
, V
1
2
I
, I
, I
, I
L1
L2
L3
4,
I
, I
, I
1
2
0
V
, V
, V
, V
L1
L2
L3
L4
I
, I
, I
, I
L1
L2
L3
L4
1
⋅
---------------- -
MByte
VDAU
V
, V
, V
, V
L1-1
L2-1
L3-1
N4
V
, V
, V
1-1
2-1
0-1
V
, V
, V
, V
L1-2
L2-2
L3-2
N8
V
, V
, V
1-2
2-2
0-2
V
, V
, V
, V
L12-1
L23-1
L31-1
4
V
, V
1-1
2-1
V
, V
, V
, V
L12-2
L23-2
L31-2
8
V
, V
, V
1-2
2-2
0-2
V
, V
, V
, V
L1
L2
L3
L4
V
, V
, V
, V
L5
L6
L7
L8
Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
CDAU
I
, I
, I
, I
L1-1
L2-1
L3-1
N4
I
, I
, I
1-1
2-1
0-1
I
, I
, I
, I
L1-2
L2-2
L3-2
N8
I
, I
, I
1-2
2-2
0-2
I
, I
, I
, I
L1-1
L2-1
L3-1
4
I
, I
1-1
2-1
I
, I
, I
, I
L1-2
L2-2
L3-2
8
I
, I
, I
1-2
2-2
0-2
I
, I
, I
, I
L1
L2
L3
L4
I
, I
, I
, I
L5
L6
L7
L8
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