ABB Relion 670 Series Commissioning Manual page 182

Section 11
Testing functionality by secondary injection
12. Deactivate the CLOSECMD: Set measured current in one phase to 90% of Current Release
level. Activate CLOSECMD.
NO TRIP signal should appear.
13. Repeat the previous two steps using OPENCMD instead of CLOSECMD. Asymmetry current
detection with CB monitoring: Set all three currents to 110% of Current Release level. Activate
CLOSECMD.
NO TRIP signal should appear due to symmetrical condition.
14. Deactivate the CLOSECMD. Decrease one current with 120% of the current unsymmetrical
level compared to the other two phases. Activate CLOSECMD and measure the operating
time of the CCPDSC (52PD) protection.
Use the TRIP signal from the configured binary output to stop the timer.
15. Deactivate the CLOSECMD. Decrease one current with 80% of the current unsymmetrical
level compared to the other two phases. Activate CLOSECMD.
NO TRIP signal should appear.
11.5.10.2 Completing the test
continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
11.5.11 Directional underpower protection GUPPDUP (37)
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
11.5.11.1 Verifying the settings
The underpower protection shall be set to values according to the real set values to be used.
The test is made by means of injection of voltage and current where the amplitude of both current
and voltage and the phase angle between the voltage and current can be controlled. During the
test, the analog outputs of active and reactive power shall be monitored.
1. Connect the test set for injection of voltage and current corresponding to the mode to be
used in the application. If a three-phase test set is available this could be used for all the
modes. If a single-phase current/voltage test set is available the test set should be
connected to a selected input for one-phase current and voltage.
176
in this chapter.
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1MRK 506 371-UUS E
TESTMODE setting to Disabled .
"Requirements" and
Line distance protection REL670
Commissioning manual
SEMOD55625-106 v4
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