Completing The Test; Breaker Failure Protection, Phase Segregated Activation And Output Ccrbrf; Checking The Phase Current Operate Value, Ip; Checking The Residual (Earth Fault) Current Operate Value In> Set Below Ip - ABB RELION 670 Series Commissioning Manual

1MRK 505 345-UEN B
9. Check the reset limit (TdReset).
Monitor the signal START until it disappears on the corresponding binary output or on
the local HMI, take the TEMP readings and compare with the setting of
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
Off .
10.5.7.2

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.
10.5.8 Breaker failure protection, phase segregated activation and
output CCRBRF
Prepare the IED for verification of settings as outlined in section
section
The Breaker failure protection, 3-phase activation and output function CCRBRF should
normally be tested in conjunction with some other function that provides a start signal. An
external START signal can also be used.
To verify the settings in the most common back-up trip mode
phase-to-earth faults.
At mode
where the return current is connected to the summated current input. The value of residual
(earth fault) current IN set lower than
10.5.8.1 Checking the phase current operate value,
The check of the
out of 3 or 2 out of 4 .
1. Apply the fault condition, including START of CCRBRF, with a current below the set
2. Repeat the fault condition and increase the current in steps until a trip occurs.
3. Compare the result with the set
10.5.8.2 Checking the residual (earth fault) current operate value
IP>
Check the low set
1 out of 4
=
Commissioning manual
"Preparing for test" in this chapter.
2 out of 4 the phase current setting, IP> can be checked by single-phase injection
IP> current level is best made in FunctionMode = Current and BuTripMode = 1
No CBPos Check or Retrip off is set, only back-up trip can be used to
Note! If
IP> .
check set
IN> current where setting FunctionMode = Current and setting BuTripMode
IP> is easiest checked in back-up trip mode 1 out of 4 .
IP>
IP> .
Testing functionality by secondary injection
ReclTemp .
TestMode setting to Off .
"Requirements" and
1 out of 3 , it is sufficient to test
IN> set below
Section 10
M14950-48 v5
M12104-2 v11
M12104-23 v12
IP> .
M12104-80 v9
139