Testing The Power Swing Detection Function Zmrpsb; Testing The Tr1 Timer - ABB RET670 Installation And Commissioning Manual

Section 13
Verifying settings by secondary injection
13.5.5.2
13.5.5.3
130
1. Keep the measured current as close as possible to its rated value or lower.
Keep it constant during the test, but ensure that it is higher than 30% of the
rated current.
2. Ensure that the maximum continuous current of the IED does not exceed four
times its rated value, if the measurement of the operating characteristics runs
under constant voltage conditions.
3. Make the necessary connections and settings of the test equipment for test of
point 1 according to figure 58.
4. Decrease the measured impedance slowly and observe the operation value for
the signal ZOUT.
5. Check the operation value with the setting table.
6. Do the necessary change of the setting of the test equipment and repeat step
and step 5 for point 2, 3 and 4 according to figure 58.

Testing the power swing detection function ZMRPSB

Preconditions
The following output signal shall be configured to a binary output: ZOUT,
measured impedance within outer impedance boundary, ZIN, measured impedance
within inner impedance boundary and START, power swing detection.
1. Slowly decrease the measured impedance in all three phases until the START
signal gets activated.
2. Increase the measured voltages to their rated values.
3. Decrease instantaneously voltages in all three phases to the values, which are
approximately 20% lower than the voltage that gives the set value R1LIn at
the predefined test current.
4. The START signal must not appear.
5. Increase the measured voltages to their rated values.
tR1 timer
Testing the
Preconditions
• The input I0CHECK, residual current (3I
output is configured to the output signal STPE on the phase selection with load
encroachment, quadrilateral characteristic function FDPSPDIS or FRPSPDIS.
• The input BLKI02, block inhibit of start output for subsequent residual current
detection is connected to FALSE.
1. Program the test equipment for a single phase-to-earth fault and energize
FDPSPDIS or FRPSDIS and check that the input BLOCK on the power
swing detection function ZMRPSB is activated.
2. Make a test sequence so that a single phase-to-earth fault occurs after that the
trajectory of the impedance has passed the outer and inner boundary of
1MRK 504 088-UEN C
) detection used to inhibit start
0
Installation and commissioning manual
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