ON-LOAD TAP CHANGER

PROBLEM TO BE SOLVED: To provide an on-load tap changer the shielding capability of which has been stabilized, which suppresses an electrode contact of a main valve from wearing out by reducing the maximum value of the shielding current at the main valve where the number of times of shielding is lar...

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Bibliographische Detailangaben
1. Verfasser:	TAKIGUCHI YUKINOBU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES INDUCTANCES MAGNETS RELAYS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SELECTORS TRANSFORMERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an on-load tap changer the shielding capability of which has been stabilized, which suppresses an electrode contact of a main valve from wearing out by reducing the maximum value of the shielding current at the main valve where the number of times of shielding is large. SOLUTION: The changer is configured so that a main valve H opens when a resistant valve W1 on the tap side energized before change operation is closed and a resistant valve W2 on the tap side not energized before change operation is open. COPYRIGHT: (C)2007,JPO&INPIT