PROTECTION DEVICE FOR LOW-VOLTAGE AUTOMATIC SWITCH

PROTECTION DEVICE FOR LOW-VOLTAGE AUTOMATIC SWITCH

FIELD: power engineering, in particular, relay protection devices. ^ SUBSTANCE: device has three current transformers, enabled into each phase of protected network, three measuring resistors, enabled in star-shaped circuit, power and bearing displacement current source, executing organ, three two-se...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: KOCHETKOV V.V
Format: Patent
Sprache:eng ; rus
Schlagworte:
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
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Beschreibung
Zusammenfassung:FIELD: power engineering, in particular, relay protection devices. ^ SUBSTANCE: device has three current transformers, enabled into each phase of protected network, three measuring resistors, enabled in star-shaped circuit, power and bearing displacement current source, executing organ, three two-semi-period bridge rectifiers, OR element, three two-input AND-NOT elements, two three-input AND elements and comparator. ^ EFFECT: higher stability of activation, speed of operation, operation comforts settings. ^ 1 dwg, 1 tbl