Monitor device, ground fault protection circut and techniques

Monitor device, ground fault protection circut and techniques

A neutral grounding resistor fault protection arrangement. The fault protection arrangement may include a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end; a sense circuit, coupled to the non ground end of the neutral grounding resistor; and a n...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LARSON, Kip M, JENSEN, Kristophor, VERHEY, Cornelis
Format: Patent
Sprache:eng
Schlagworte:
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
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Beschreibung
Zusammenfassung:A neutral grounding resistor fault protection arrangement. The fault protection arrangement may include a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end; a sense circuit, coupled to the non ground end of the neutral grounding resistor; and a neutral grounding monitor, coupled to the non-ground end of the neutral grounding resistor, the neutral grounding monitor comprising an injection signal generator, the injection signal generator arranged to generate a frequency of 240 Hz or greater. I z NON-GROUNDEDEND GROUNDEDENDFI.1 162-"$ NON-GEOUNDEE END* 156* 0-1 --158 160 FIG.l1B GROUNDED END r --- 15 is 20 '' C9 13 C inje'ct 5 4 926 8 fFrom sigr; generator25 2 NGR sense resist(or 2 _ 3 28 11 3To signal generator 12 7,2