Hitachi Relion 670 Series Commissioning Manual page 166

Section 11
Testing functionality by secondary injection
4. Check the time until the actual temperature TEMP has reached the AlarmTemp level during
injection.
Monitor the signal ALARM until it appears on the corresponding binary output or on the local HMI.
5. Measure the LFPTTR/LCPTTR (26)protection trip time.
Use the TRIP signal from the configured binary output to stop the timer.
6. Take the TEMP readings.
Compare with the setting of TripTemp.
7. Activate the BLOCK binary input.
The signals ALARM, PICKUP and TRIP should disappear.
8. Reset the BLOCK binary input.
9. Check the reset limit (TdReset).
Monitor the signal PICKUP until it disappears on the corresponding binary output or on the local
HMI, take the TEMP readings and compare with the setting of ReclTemp.
10. Compare the measured trip time with the setting according to the formula.
11. Reset the thermal memory.
12. Continue to test another function or end the test by changing the test mode setting to Disabled.
11.5.7.2 Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.5.8 Breaker failure protection, phase segregated activation and
output CCRBRF (50BF)
Prepare the IED for verification of settings outlined in Section
The Breaker failure protection, 3-phase activation and output function CCRBRF (50BF) should normally
be tested in conjunction with some other function that provides an initiate signal. An external BFI_3P
signal can also be used.
To verify the settings in the most common back-up trip mode 1 out of 3, it is sufficient to test phase-to-
ground faults.
At mode 2 out of 4 the phase current setting, Pickup_PH can be checked by single-phase injection where
the return current is connected to the summated current input. The value of residual (ground fault)
current IN set lower than Pickup_N is easiest checked in back-up trip mode 1 out of 4.
11.5.8.1 Function revision history
Document
revision
A
B
C
D
E
F
Table continues on next page
160
Product History
revision
2.2.1 I>BlkCBPos setting functionality correction.
2.2.1 -
2.2.2 -
2.2.3 Setting StartMode is added to choose how retrip and backup trip timers are run. The choices
are; to run the timers by external start signal which is latched, to follow the external start
signal only or to follow the external start signal and the selected FunctionMode.
2.2.3 -
2.2.4 -
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1MRK506371-UUS Rev. M
"Preparing the IED to verify
GUID-3A043295-3AE3-437E-BBE9-D7FD6F349892 v3
Line distance protection REL670
Commissioning manual
M14950-48 v5
M12104-2 v14
settings".