9. Check the inverse time delay by injecting a voltage corresponding to 0.8 ×
U1<.
For example, if the inverse time curve A is selected, the trip
signals TR1 and TRIP operate after a time corresponding to
the equation:
IECEQUATION2428 V1 EN-US (Equation 87)
where:
t(s) Operate time in seconds
k1 Settable time multiplier of the function for step 1
U Measured voltage
U1< Set start voltage for step 1
For example, if the measured voltage jumps from the rated value to 0.8 times
the set start voltage level and time multiplier k1 is set to 0.05 s (default
value), then the TR1 and TRIP signals operate at a time equal to 0.250 s ±
tolerance.
10. The test above can be repeated to check the inverse time characteristic at
different voltage levels.
11. Repeat the above described steps for Step 2 of the function.
Extended testing
M13796-35 v8
The tests above can be repeated for 2 out of 3 and for 3 out of 3 operation mode.
9.5.1.2 Completing the test
M13796-25 v5
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.
9.5.2 Two step overvoltage protection OV2PTOV
M13806-2 v6
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
9.5.2.1 Verifying the settings
M13806-9 v2
Verification of single-phase voltage and time delay to operate for
Step 1
M13806-50 v9
Section 9 1MRK 506 383-UEN A
Testing functionality by secondary injection
124 Line distance protection REL650 2.2 IEC
Commissioning manual
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