FIELD: electricity.
SUBSTANCE: invention relates to the field of electric engineering and may be used in power breakers. Tensioning device for connecting spring element of power breaker comprises tension shaft rotated by means of driving wheel for tensioning of connecting spring element, which is rigidly connected to eccentric and to disk cam and comprises releasing support. Driving wheel is connected to tensioning shaft via coupling unit in the form of ratchet wheel.
EFFECT: simplified design and efficiency.
6 cl, 3 dwg
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