Commissioning Test; Disturbance Recorder; Function; Disturbance Recorder Data - ABB REJ 527 Technical Reference Manual

1MRS 750616-MUM
4.1.6.
4.1.7.
4.1.7.1.
4.1.7.2.
Directional or Non-Directional Earth-Fault Relay
Technical Reference Manual
In addition, in case of an alarm from a protection stage, a text message will appear
on the LCD.
The messages on the LCD have a certain priority order. If different types of
indications are activated simultaneously, the message with the highest priority will
appear on the LCD.
The priority order of the messages:
1. CBFP
2. TRIP
3. START

Commissioning test

The function test is used for testing the configuration as well as the connections to
and from the relay. By selecting this test the ten internal signals from the protection
stages and the IRF function can be activated and tested one by one. Provided that the
internal signals from the protection stages have been set to be routed to the output
contacts (PO1, PO2, SO1 and SO2) with the switches of SGR1...6, the output
contacts will be activated and the corresponding event codes generated when the test
is run. The test will not generate protection function event codes. Additionally, if the
CBFP function is in use and PO1 is activated, PO2 will be activated, too.
The state of the binary input can be monitored by selecting the binary input test, and
the LEDs can be turned on by selecting the LED test. Refer to the Operator's Manual
for more detailed instructions on how to perform the tests.

Disturbance recorder

Function

The REJ 527 features an integrated disturbance recorder for recording monitored
quantities. The recorder continuously captures the curve forms of the current and
voltage as well as the status of both the internal signals and the external binary input
signal and stores these in the memory.
Triggering of the recorder will generate an event code. After the recorder has been
triggered, it will continue to record data for a pre-defined post-triggering time. An
asterisk will be shown on the LCD on completion of the recording. The status of the
recording can also be viewed using a SPA parameter.
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 two analogue channels and the seven digital
channels for a preselected time. The analogue channels, whose data is stored either
as RMS curves or momentary measured values, are the currents measured by the
relay. The digital channels, referred to as digital signals, are the start and trip signals
from the protection stages and the external binary input signal linked to the relay.
REJ 527
39