ABB RELION RET670, Installation And Commissioning Manual

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No ECHO, CS and TRWEI outputs should appear.
9. Reset the CRL and BLOCK binary input.
10. Inject the polarizing voltage 3U0 to about 110% of the setting ( 3U0 ) and
adjust the phase angle between the voltage and current to 155°, the current
leading the voltage.
11. Inject current (155° leading the voltage) in one phase to about 110% of the
setting operating current ( IN>Dir ).
12. Activate the CRL binary input.
No ECHO, CS and TRWEI should appear.
13. Abruptly reverse the current to 65° lagging the voltage, to operate the forward
directional element.
No ECHO, CS and TRWEI should appear.
14. Switch the current off and check that the ECHO, CS and TRWEI appear on
the corresponding binary output or on the local HMI, about 200ms after
resetting the directional element.
15. Switch the polarizing voltage off and reset the CRL binary input.
13.12.2.3 Completing the test
Continue to test another function or end the test by changing the Test mode setting
to Off . Restore connections and settings to their original values, if they were
changed for testing purposes.
13.13 Logic
13.13.1 Tripping logic SMPPTRC
Prepare the IED for verification of settings as outlined in section "Overview" and
section "Preparing for test" in this chapter.
This function is functionality tested together with other protection functions (line
differential protection,earth-fault overcurrent protection, and so on) within the IED.
It is recommended that the function is tested together with the autorecloser
function, when built into the IED or when a separate external unit is used for
reclosing purposes. The instances of SMPPTRC are identical except for the name
of the function block SMPPTRC. The testing is preferably done in conjunction
with the protection system and autoreclosing function.
1MRK 504 088-UEN C
Section 13
Verifying settings by secondary injection
197
Installation and commissioning manual