ABB Relion 670 Series REL670 - Testing Blocking Scheme; Completing the Test; Current Reversal and Weak-End Infeed Logic for Distance Protection 3-Phase ZCRWPSCH

7. Apply healthy normal load conditions to the IED for at least two seconds.
8. Apply a fault condition within the permissive zone.
9. Check that trip time complies with the zone timers and that correct trip outputs,
external signals, and indications are obtained for the actual type of fault
generated.
10.11.2.3 Testing blocking scheme
1. Deactivate the receive (CRLx) signal of the IED.
2. Apply healthy normal load conditions to the IED for at least two seconds.
3. Apply a fault condition within the forward directed zone used for scheme
communication tripping.
4. Check that correct trip outputs and external signals are obtained for the type of
fault generated and that the operate time complies with the tCoord timer (plus
relay measuring time).
5. Check that the other zones operate according to their zone times and that a send
(CSLx) signal is only obtained for the reverse zone.
6. Activate the IED receive (CRLx) signal.
7. Apply a fault condition in the forward directed zone used for scheme
communication tripping.
8. Check that the no trip from scheme communication occurs.
9. Check that the trip time from the forward directed zone used for scheme
communication tripping complies with the zone timer and that correct trip
outputs, external signals, and indications are obtained for the actual type of fault
generated.
10.11.2.4 Completing the test
Continue to test another function or end the test by changing the TestMode setting to
Off. Restore connections and settings to their original values, if they were changed for
testing purposes.
10.11.3 Current reversal and Weak-end infeed logic for distance
protection 3-phase ZCRWPSCH
Prepare the IED for verification of settings outlined in section
"Preparing the IED to
verify settings".
Values of the logical signals for ZCRWPSCH are available on the local HMI under
Main menu/Tests/Function status / Scheme communication / ZCRWPSCH(85) /
ZCRWPSCH:1.
The Signal Monitoring in PCM600 shows signals that are available on the Local HMI.
The current reversal logic and the weak-end infeed functions are tested during the
secondary-injection test of the impedance or overcurrent protection zones together
with the scheme communication logic for the distance protection function ZCPSCH.
Section 10 1MRK 506 355-UEN A
Testing functionality by secondary injection
214 Line distance protection REL670 2.1 IEC
Commissioning manual