Completing The Test; Frequency Protection; Underfrequency Protection Saptuf; Verifying The Settings - ABB RELION 670 Series Commissioning Manual

Section 10
Testing functionality by secondary injection
• Check that TRIP and TRL1 are generated with the conditions described after a set delay
time of
• Check that activated trip signals and start signals are blocked by enabling BLKTR and
BLKST.
• Check that all activated signals are disabled by BLOCK input.
• If required, perform creating faults on the remaining phases in the similar way.
Test of delayed fault clearing for three pole tripping
• Connect the test set for the injection of three phase voltages and currents to the
appropriate terminals of the IED.
• Enable the delayed fault clearance for three pole tripping by setting
(On) , Del1PhOp to 3Ph (Off) and also connect the inputs BLKDLFLT and FUSEFAIL to
FALSE.
• Also assume circuit breaker is in closed position, that is, the input CBCLOSED is high prior
to fault occurrence.
• Create a L2L3 fault such that their phase voltage magnitudes are lower than
times corresponding quadrature phase to phase voltage and set
• Check that TRIP, TRL1, TRL2 and TRL3 are generated after the set delay time of
ARST, ARST3PH, ARSTL1, ARSTL2 and ARSTL3 are also activated.
• Check that activated trip signals and start signals are blocked by enabling BLKTR and
BLKST.
• Check that all activated signals are disabled by BLOCK input.
10.6.7.2

Completing the test

Continue to test another function or end the testing by setting the parameter
under: Main menu/Tests/IED test mode/TESTMODE:1
Restore connections and settings to their original values if they were changed for testing
purposes.
10.7

Frequency protection

10.7.1

Underfrequency protection SAPTUF

Prepare the IED for verification of settings as outlined in section
section
10.7.1.1

Verifying the settings

Verification of START value and time delay to operate
1. Check that the IED settings are appropriate, for example the START value and the time
delay.
2. Supply the IED with three-phase voltages at their rated values.
3. Slowly decrease the frequency of the applied voltage, until the START signal appears.
4. Note the operate value and compare it with the set value.
5. Increase the frequency until rated operating levels are reached.
160
t1Ph and the outputs ARST and ARSTL1 are also activated. .
"Preparing for test" in this chapter.
1MRK 505 345-UEN B
Del3phOp to TRUE
UPhSel<
Tau to default value.
t3Ph and
GUID-4AFACF9B-9CA8-4960-9806-316FFCFEDEC0 v1
TestMode to Off
SEMOD53547-1 v1
"Requirements" and
Commissioning manual
M16289-2 v6
M16289-15 v3
M16289-17 v6