摘要:
A switching apparatus (1) for medium voltage electric systems, said switching apparatus comprising one or more electric poles (2), each electrically coupleable with a corresponding electric line, said switching apparatus comprising: - for each electric pole, a fixed contact (3) and a corresponding movable contact (4), said movable contact being reversibly movable, along a corresponding translational displacement axis (A1), between a decoupled position from said fixed contact and a coupled position with said fixed contact; - an actuation assembly (5) having, for each electric pole, an actuation shaft (52) rotating about a rotation axis (A2) during a closing manoeuvre or an opening manoeuvre of said switching apparatus; - for each electric pole, a motion transmission assembly (150) including an eccentric mechanism (6) operatively coupled with said actuation shaft (52).
摘要:
The invention provides a device for limiting a movement of a member driven by a motor, comprising at least one switch functionally couplable to the motor, at least one movable actuating element, driven by the member driven by the motor and coacting with the at least one switch, and a mechanical lock for engaging said actuating element for mechanically locking said actuating element when it is at or past at least one set limit position.
摘要:
This invention discloses a motor drive of electrical apparatuses which drives medium and high voltage switch disconnectors, circuit breakers, disconnectors, and earthing switches. The drive disclosed in the invention is characterized in that a system of reduction transmissions comprises a worm transmission (2) and a cycloidal transmission (3) located in a common housing (4). The axis of the output shaft (14) of the drive is situated centrically on the axis of a wormwheel (8) of the worm transmission (2), in the axis of the output gear (11) of the cycloidal transmission (3) and in the axis of a revolving eccentric bush (9). The wormwheel (8) of the worm transmission (2) is mounted immovably on the revolving eccentric bush (9) on which there is mounted rotatably a gear wheel (10) of the cycloidal transmission (3) whose output gear (11) is coupled with a slidable bush (12) of a disengaging coupling (13) mounted on the free end (14b) of the output shaft of the drive (14).
摘要:
The invention relates to an electric switching device (10) for an energy accumulator in an electric vehicle, comprising a housing (20) inside which at least one switching section (30) that includes two input contacts (32a, 32b) and at least one output contact (34) is arranged, and a rotary component (40) which is mounted in such a way as to be rotatable relative to the housing (20) about a switching axis (42) between at least one OFF position (I), a series-connecting position (II), and an ON position (III); said rotary component (40) includes at least one conductor (44) which has at least two conductor contacts (44a, 44b) and which connects the first input contact (32a) in an electrically conducting manner to the output contact (34) in the series-connecting position (II) and connects the second input contact (32b) in an electrically conducting manner to the output contact (34) of the at least one switching section (30) in the ON position (III).
摘要:
There are provided a row of external permanent magnets (31) and a row of internal permanent magnets (32); a floating output ring (34) is provided on which is wound a 3-phase coil (33), between these rows. The floating output ring (34) has no mechanical restraining relationship with any other member in the linear motor (3). Instead, a controller that controls a PWM inverter that injects AC exciting current into the 3-phase coil (33) brings the central axes of the double cylinder (35) and the floating output ring (34) into coincidence by generating supporting force with respect to the floating output ring (34) by magnetism, by controlling the d axis current component of the exciting current.
摘要:
Schalter (1), insbesondere Unterseeschalter, mit einer Mehrzahl fest miteinander verbundener Kontaktelemente (3), einer Mehrzahl fest miteinander verbundener Buchsen (23), wobei jeweils eine der Buchsen (23) zur Aufnahme von jeweils einem der Kontaktelemente (3) eingerichtet ist, einem Aktuator (10), eingerichtet zum zwangsgeführten Bewegen der Kontaktelemente (3) relativ zu den Buchsen (23).