If wanted, change all settings cyclically for other faults (L2-N and L3-N).The setting parameter WEI is set to Echo & Trip.1. Apply input signals according Table 18.2. Activate the receive (CR) signal.3. After the IED has operated, turn off the input signals.4. Check that trip, send signal, and indication are obtained.The ECHO output gives only a 200 ms pulse.9.9.2.3 Completing the test M14947-105 v5Continue to test another function or end the test by changing the TESTMODEsetting to Off. Restore connections and settings to their original values, if they werechanged for testing purposes.9.9.3 Local acceleration logic ZCLCPSCH M11758-32 v5Prepare the IED for verification of settings outlined in Section "Preparing the IEDto verify settings".The logic is checked during the secondary injection test of the impedancemeasuring zones.9.9.3.1 Verifying the settings M11758-37 v41. Provide the IED with conditions equivalent to normal load for at least twoseconds.2. Deactivate the conditions for accelerated function.3. Apply a phase-to-earth fault at 100% of line impedance.4. Check that the fault is tripped with the second zone time delay.5. Provide the IED with conditions equivalent to normal load for at least twoseconds.6. Activate the condition for accelerated function either by the autorecloser orby the loss-of-load.7. Apply a phase-to-earth fault at 100% of line impedance.8. Check that the fault is tripped instantaneously.Section 9 1MRK 506 383-UEN ATesting functionality by secondary injection152 Line distance protection REL650 2.2 IECCommissioning manual
