F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
F16D49/16—Brakes with two brake-blocks
B—PERFORMING OPERATIONS; TRANSPORTING
B66—HOISTING; LIFTING; HAULING
B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
B66C13/00—Other constructional features or details
B66C13/18—Control systems or devices
B66C13/22—Control systems or devices for electric drives
B66C13/23—Circuits for controlling the lowering of the load
B66C13/26—Circuits for controlling the lowering of the load by AC motors
B—PERFORMING OPERATIONS; TRANSPORTING
B66—HOISTING; LIFTING; HAULING
B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
B66C2700/00—Cranes
B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
B66C2700/081—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists with AC motors
Procede de commande d'un dispositif demarreur d'un moteur thermique, du type a deux demarreurs et dispositif pour la mise en oeuvre de ce procede