Mechanism for adjusting the speed of displacement of an arc contact for a switching apparatus

The invention relates to a mechanism for adjusting the speed of movement of an arcing contact for a switching apparatus for preventing main contacts of the apparatus from being damaged by arcing. A support that supports an arcing contact and a cylinder accommodating a piston secured to the support a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIZUMI, TOSHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING RELAYS SELECTORS SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a mechanism for adjusting the speed of movement of an arcing contact for a switching apparatus for preventing main contacts of the apparatus from being damaged by arcing. A support that supports an arcing contact and a cylinder accommodating a piston secured to the support are formed respectively with nozzle grooves and nozzle holes. The nozzle grooves and nozzle holes serve to communicate the inside and outside of the cylinder and adjust the speed of movement of the arcing contact according to the movement of the arcing contact. The way in which the speed of movement of the arcing contact is adjusted can be varied by varying the shape and length of the grooves formed in the support.