PAWL DEVICE OF HIGH-SPEED CIRCUIT BREAKER

摘要

Roller (14) is swively located on axis (13) in movable contact bridge (4) with pawl draw bar (15) swively located and acting on roller (14) in engaging direction which face side, reversed to roller (4) is created as slotted link (16) and it is at least partially adapted into outline of roller (14) with power acting in switching off direction on movable contact bridge (4) leaded mainly by switching off spring (22) and with trip (25) acting on pawl draw bar (15). Draw bar (15) adapted to outline of roller (14) pass to section running tangentialy to roller (14) and slotted link (16) passing tangentialy to roller (14) is towards switching on direction inclined about angle (90 degrees-alpha) at which the angle (alpha) is determinated with relation I, where C5 is triction coefficient between axis (13) and roller (14) C6 is triction coefficient between roller (14) and slotted link (16), R1 is radius of axis (13) and R2 is radius