FIELD: electricity.
SUBSTANCE: mechanical operation counter for air circuit beaker counts circuit breaker opening and closing operations. It is provided with a drive to prevent impact dynamic load as a result of momentary force action due to opening or closing spring operation. The operation counter includes also a jaw with round external surface and curvature with curvilinear contour and variable radius, control lever with the end contacting the external round surface of jaw and turning according to contact position on the external round surface of jaw. There is also a counter control lever with the end contacting control lever and being turned due to interaction with control lever. The counter is implemented so that it can be actuated due to counter control lever turning and the number of circuit breaker circuit closing operations can be calculated and displaced.
EFFECT: improved reliability of operation counter actuation and accuracy of counter indications.
9 cl, 11 dwg
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