ABB REU 523 - Page 41

1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
41
Recorded data
Parameter V1shows the maximum and parameter V2 the minimum voltage value
measured as a multiple of the rated voltage, U
n
, since the last master reset. Parameter
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
Para-
meter
R, W Value
Maximum voltage measured V1 R 0...2 x U
n
Minimum voltage measured V2 R 0...2 x U
n
Average voltage during 1 minute V3 R 0...2 x U
n
Average voltage during 10 minutes V4 R 0...2 x U
n
Number of starts of stage U> V5 R 0...999
Number of starts of stage U>> V6 R 0...999
Number of starts of stage U< V7 R 0...999
Number of starts of stage U<< V8 R 0..999
Trip indication code 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
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)
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
23
<
256=U
31
<
512=U
12
<<
1024=U
23
<<
2048=U
31
<<
4096=U
1s