42
1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
The last five recorded values can be read with parameters V11...V100. Event n
denotes the last recorded value, n-1 the next one, and so forth.
Disturbance recorder
Table 4.1.10.4-3 Recorded data
Recorded data Event (R) Value
n n-1 n-2 n-3 n-4
Maximum voltage measured at
the start of stage U> or U>>
V11 V31 V51 V71 V91 0...2 x U
n
Minimum voltage measured at
the start of stage U< or U<<
V12 V32 V52 V72 V92 0...2 x U
n
Voltage measured at the
moment of tripping
V13 V33 V53 V73 V93 0...2 x U
n
The minimum value of the
positive-phase-sequence
voltage at the start of stage U<
or U<<
V14 V34 V54 V74 V94 0...2 x U
n
Start duration, stage U> V15 V35 V55 V75 V95 0...100%
Start duration, stage U>> V16 V36 V56 V76 V96 0...100%
Start duration, stage U< V17 V37 V57 V77 V97 0...100%
Start duration, stage U<< V18 V38 V58 V78 V98 0...100%
Time stamp of the registered
value, date
V19 V39 V59 V79 V99 YY-MM-DD
Time stamp of the registered
value, time
V20 V40 V60 V80 V100 HH.MM;
SS.sss
Table 4.1.10.4-4 Parameters for the disturbance recorder
Description Parameter R, W Value/Note
Manual triggering
M1
2)
W1
Clear recorder memory M2 W 1
Sampling rate
M15
3)
R, W 800/960 Hz
400/480 Hz
50/60 Hz
Station identification/unit number M18 R, W 0…9999
Rated frequency M19 R 50 or 60 Hz
Station name M20 R, W Max 16 characters
Digital channel texts M40...47 R
Analogue channel texts M60...62 R
Analogue channel(s): rated
voltage and unit of primary voltage
transformer(s)
M80
1)
M81, 82
R, W
R
Factor 0.00...600, unit (V, kV),
e.g. 20.0, kV
Post-triggering recording length V240 R, W 0...100%
Internal trigger signals’ checksum V241 R, W 0...127, see table 4.1.10.4-5
Internal trigger signal’s edge V242 R, W 0...127,
0 = rising, 1 = falling
External trigger signal (BI) V243 R, W 0/1, see table 4.1.10.4-6
External trigger signal’s edge V244 R, W 0/1,
0 = rising, 1 = falling
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