Transcription of Application Notes for KCGG High Impedance …
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Application Notes for KCGG High Impedance …
Application Notes forKCGG high Impedance Protection2 Application Notes forKCGG high Impedance ProtectionIntroductionThe Application of the kcgg numerical overcurrent relay asdifferential protection for machines,power transformers and busbarinstallations is based on the highimpedance differential principle,offering stability for any type of faultoccurring outside the protected zoneand satisfactory operation for faultswithin the high Impedance relay is definedas a relay or relay circuit whosevoltage setting is not less than thecalculated maximum voltage whichcan appear across its terminalsunder the assigned maximumthrough fault current can be seen from Figure 1 thatduring an external fault the throughfault current should circulatebetween the current transformersecondaries.
2 Application Notes for KCGG High Impedance Protection Introduction The application of the KCGG numerical overcurrent relay as …
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