10.5.9.2 Completing the test
GUID-22F28DEA-B320-41EA-B621-ACA9D72975D7 v1
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 Voltage protection
SEMOD53540-1 v1
10.6.1 Two step undervoltage protection U2RWPTUV
GUID-63683861-9B68-4EC1-9EC5-86536C97A1E8 v2
Prepare the IED for verification of settings outlined in Section
"Preparing the IED
to verify settings".
Values of the logical signals for U2RWPTUV are available on the local HMI under
Main menu/Tests/Function status/Voltage protection/UnderVoltage2Step(27,
2(2U<))/U2RWPTUV(27,2(2U<)):x, where x = 1, 2.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
10.6.1.1 Verifying the settings
M13796-9 v3
Verification of start value and time delay to operate for Step 1
M13796-29 v10
1. Check that the IED settings are appropriate, i.e. U1< and t1.
2. Set OpMode1 to Any phase mode. Also, set ConnType to PhNDFT.
3. Supply the IED with two-phase voltages at their rated values.
4. Slowly decrease the voltage in one of the phases, until the START signal
appears.
5. Note the operate value and compare it with the set value.
6. Observe that the TRIP signal appears after set time delay of t1 s.
The operate value in secondary volts is calculated according
to the following equations:
For phase-to-earth measurement:
1sec
100 2
U UBase VT
VTprim
IECEQUATION049 V1 EN-US
(Equation 6)
For phase-to-phase measurement:
U
UBase
VT
VTprim
1
100
<
× ×
sec
IECEQUATION2431 V1 EN-US
(Equation 7)
Section 10 1MRK 506 377-UEN C
Testing functionality by secondary injection
120 Railway application RER670 2.2 IEC
Commissioning manual
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