1sec
100 2
U UBase VT
VTprim
IECEQUATION16026 V1 EN-US (Equation 8)
For phase-to-phase measurement:
U
UBase
VT
VTprim
1
100
>
× ×
sec
IECEQUATION2427 V1 EN-US (Equation 9)
6. Decrease the phase voltage to a value lower than set U1> value.
7. Observe that the START signal resets.
8. Set and apply about 20% higher voltage than U1> value for one phase.
9. Measure the operate time for TRIP Signal.
10. Repeat the above described steps for Step 2 of the function.
10.6.2.2 Completing the test
M13806-43 v6
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.
10.6.3 Two step residual overvoltage protection ROV2PTOV
SEMOD54358-3 v7
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
Values of the logical signals for ROV2PTOV are available on the local HMI under
Main menu/Tests/Function status/Voltage protection/
ResidualOverVoltage2Step(59N, 2(U0>))/ROV2PTOV(59N;2(U0>)):x, where x
= 1, 2.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
10.6.3.1 Verifying the settings
SEMOD54358-35 v11
1. Apply a single-phase voltage either to a single-phase voltage input or to a
residual voltage input with the start value below the set value U1>.
2. Slowly increase the value beyond the U1> setting until ST1 appears.
3. Note the operate value and compare it with the set value U1>.
4. Decrease the voltage slowly and note the reset value.
5. Set and apply a 20% higher voltage than the measured operate value for one
phase.
6. Measure the time delay for the TR1 signal and compare it with the set value
t1.
7. Repeat the test 1–6 above for Step 2 of the function.
Section 10 1MRK 506 377-UEN C
Testing functionality by secondary injection
122 Railway application RER670 2.2 IEC
Commissioning manual
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