Disturbance Recorder; Function; Disturbance Recorder Data - ABB REU 610 Technical Reference Manual

REU 610
5.1.11.
5.1.11.1.
5.1.11.2.
52
Voltage Relay
Technical Reference Manual

Disturbance recorder

Function

The relay features an integrated disturbance recorder which continuously captures
the curve forms of the voltages as well as the status of both internal signals and the
external digital input signals and stores these in the memory.
Triggering of the recorder generates an event code. After the recorder has been
triggered, it continues to record data for a pre-defined post-triggering time. An
asterisk is shown on the LCD on completion of the recording. The status of the
recording can also be viewed using SPA parameter V246.
As soon as the recorder has been triggered and the recording has finished, the
recording can be uploaded and analyzed by means of a PC provided with a special
program.

Disturbance recorder data

One recording contains data from the four analog channels and up to eight digital
channels. The analog channels, whose data is stored either as RMS curves or as
momentary measured values, are the voltages measured by the relay. The digital
channels, referred to as digital signals, are start and trip signals from the protection
stages and the digital input signals linked to the relay.
The user can select up to eight digital signals to be recorded. If more than eight
signals are selected, the first eight signals are stored, beginning with the internal
signals followed by the digital input signals.
The digital signals to be stored are selected with parameters V238 and V243; see
Table 5.1.17.-5 and Table 5.1.17.-6.
The recording length varies according to the selected sampling frequency. The RMS
curve is recorded by selecting the sampling frequency to be the same as the nominal
frequency of the relay. The sampling frequency is selected with SPA parameter M15;
see the table below for details.
Table 5.1.11.2.-1 Sampling frequency
Nominal frequency Hz
50
60
a)
RMS curve.
Recording length:
Sampling frequency Hz
800
400
a)
50
960
480
a)
60
1MRS755769
Cycles
250
500
4000
250
500
4000