摘要:
An electronic speed variator having a heat sink forming the bottom of a variator housing. Heat emitting components such as capacitors are attached to the heat sink. The heat sink has a flat sole plate and is coupled to a ribbed radiator through the wall of a cabinet.
摘要:
The invention relates to an electrical fixing terminal for an electrical switchgear apparatus being disconnected by an axial withdrawal motion. In particular, an extractable circuit breaker, comprising a protruding part extending parallel to an axis of withdrawal and, defined by its external surface on the side where its free end is located a contact surface designed to cooperate with fixing jaws of a plug-in contact whose plug-in jaws are designed to cooperate by plug-in with an electrical plug-in terminal. The contact surface follows the outline of a cylinder sector of axis perpendicular to the axis of the protruding part, of opening angle greater than 180.degree. and is designed to form a pivot for rotation of the plug-in contact around the axis of the cylinder. An application is plug-in multipole circuit breakers.
摘要:
A support and electrical power supply device comprises a mounting plate supporting an electrical switchgear apparatus and housing branch conductors extending perpendicularly to a busbar. The branch conductors present identical lengths. The connection strips are arranged close to the opposite terminal parts of the branch conductors and comprise orifices arranged symmetrically with respect to the horizontal midplane of the mounting plate to enable fitting of the connection parts with the lineside terminals or the loadside terminals of the switchgear apparatus. Two connection possibilities of the switchgear apparatus are possible at the time of installation to achieve a lineside or a loadside power supply. The same mounting plate can also be used for supply of a single switchgear apparatus or of two switchgear apparatuses with opposite feeders.
摘要:
The trip bar is sub-divided into a first actuating part associated to the trip rod of the actuator and a second actuating part operating in conjunction with the indicating device. A mechanical coupling link is arranged between the two actuating parts being adjustable between a coupled position and a disengaged position. An operating lever performs locking of the second actuating part in the active position to keep the fault information on the indicating device, whereas the first actuating part returns automatically to the inactive position when said mechanical link is in the disengaged position.
摘要:
The present invention concerns an interface module between a field bus and electrical equipment controlling and protecting an electric motor. The interface module includes an integrated circuit having data pins connected via input/output circuits to contacts or binary sensors or to coils or actuators of the electrical equipment. The data pins of the integrated circuit are connected via logic circuits to inputs or outputs which are greater in number than the data pins. The inputs/outputs are connected to coils or actuators and to auxiliary contacts or binary sensors of the electrical equipment.
摘要:
A proximity detector including a rapid transistor (i.e., one having a very high product gain-band) connected to a high potential voltage via a capacitor. The capacitor is connected in series to a source of a pulsed current that is a function of the proximity of an object. The capacitor is also connected to a low potential voltage via an RC circuit. The mid-point of the RC circuit is connected to the collector of a transistor connected to the high potential voltage by a collector resistor in parallel with a gain resistor of the amplifier.
摘要:
A proximity detector including a sensor unit that produces an analog signal and a processor circuit digitizing this signal. The processor circuit includes logic that determines a switching value from an initial value and an extreme value obtained during a learning mode.
摘要:
A safety switch including a control head rotatably linked to a casing that encloses an electrical contact assembly. A cylindrical collar of the head, engaged in an opening in the casing, is equipped with an annular groove with which retaining elements cooperate in order to immobilize the head along a predetermined direction. A fixing screw cooperates with re-entrant elements situated on the periphery of the collar in order to lock the head and prevent the head from rotating.