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1MRK 504 165-UEN Rev. K
11.6.6.2
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
11.7
Unbalance protection
11.7.1
Shunt capacitor cascading failure protection SCCFPVOC
Prepare the IED for verification of settings outlined in Section
11.7.1.1
Function revision history
Document
revision
D
E
F
G
H
J
11.7.1.2
Verifying the signals and settings
A shunt capacitor cascading failure protection SCCFPVOC function has the following modes of
operation:
•
Two step negative sequence voltage restrained over-current protection
•
Two step zero sequence voltage restrained over-current protection
Verification of negative sequence-based operation
1.
Set the following parameters:
•
•
•
•
•
•
2.
Values of the logical signals and the service values for SCCFPVOC are available on the local
HMI under: Main menu/Tests/Function status/Unbalance protection/
CapBankCascadingFail(51V,2(I>/U<))/SCCFPVOC (51V, 2(I>/U<)):x, where x = instance
number.
Transformer protection RET670
Commissioning manual
Product
History
revision
2.2.3
-
2.2.3
-
2.2.4
-
2.2.4
-
2.2.4
-
2.2.5
The harmonic restraint function changed to freeze the definite timers.
Operation = ON
Operation1 = ON (Step 1)
CurrentInput = negSeq
VoltageInput = negSeq
I > = 125% IBase
VDepFact1 = (1-117)/I> = 0.064
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Testing functionality by secondary injection
GUID-5E075378-BE05-4C5F-AD92-568C2D84CCF1 v1
GUID-08928884-88E3-4A40-9B50-BDA5F1A451D9 v1
GUID-079BCF22-469C-42EA-B857-E28154EC13D9 v1
"Preparing the IED to verify
GUID-D7C922F5-2C3F-40E2-8B7F-B42F12597971 v1
GUID-E395E984-9995-4CE4-A13B-035F77BC035E v1
GUID-4F1928D9-59DE-4422-8930-1FF332D2F5BE v1
Section 11
SEMOD175023-47 v4
settings".
203
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