ABB REU 523 Technical Reference Manual page 41

1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
Recorded data
Parameter V1shows the maximum and parameter V2 the minimum voltage value
measured as a multiple of the rated voltage, U
V3 shows the average voltage value measured during one minute. The value is
updated once a minute. Parameter V4 shows the average voltage during a ten
minutes' period. This value is updated ten minutes after the relay start-up, after
which it is updated once a minute. Parameters V5...V8 show the number of starts of
the protection stages, parameter V9 shows the trip indication code and parameter
V10 the stage which has tripped.
Table 4.1.10.4-2 Recorded data: Parameters V1...V10
Recorded data
Maximum voltage measured
Minimum voltage measured
Average voltage during 1 minute
Average voltage during 10 minutes
Number of starts of stage U>
Number of starts of stage U>>
Number of starts of stage U<
Number of starts of stage U<<
Trip indication code
Stage/voltage which caused the trip; the
value may also be a combination of two or
more of the individual values,
e.g. 24 (=8 + 16)
, since the last master reset. Parameter
n
Para-
R, W Value
meter
V1 R 0...2 x U
V2 R 0...2 x U
V3 R 0...2 x U
V4 R 0...2 x U
V5 R 0...999
V6 R 0...999
V7 R 0...999
V8 R 0..999
V9 R 0 = ---
1 = start of stage U>
2 = trip of stage t>
3 = start of stage U>>
4 = trip of stage t>>
5 = start of stage U<
6 = trip of stage t<
7 = start of stage U<<
8 = trip of stage t<<
9 = trip of the CBFP unit
V10 R 1=U >
12
2=U >
23
4=U >
31
8=U >>
12
16=U
23
32=U
31
64=U
12
128=U
256=U
512=U
1024=U
2048=U
4096=U
REU 523
n
n
n
n
>>
>>
<
<
23
<
31
<<
12
<<
23
<<
31
1s
41