Abstract

An actuation control (10), for electrical disconnectors, which comprises - a device (11) for driving the actuation motor (12) of a movable element (13) of an electrical disconnector (14) or the like, adapted to execute a program for driving the movable element (13), - means (15, 16, 17, 18) for detecting operating parameters of the disconnector (14), - a device (19) for processing the operating and control parameters of the driving device (11), to which it is connected in order to control it in an emergency situation, according to an emergency driving program to be executed instead of a preset ordinary driving program, the emergency situations being defined by the acquisition, by at least one of the operating parameters, of a value that exceeds a predefined threshold value, - means (20) for storing the operating parameters, which are connected to the processing and control device (19) in order to receive from it and store the processed operating parameters, - interface means (21) of the actuation control (10), for its activation for opening or closing the disconnector (14). The operating parameters comprise at least - first operating parameters for the operation of the movable element (13), which comprise at least the speed of motion of the movable element (13) and its position between a disconnector closure position and a disconnector open position, - second operating parameters for the operation of the motor (12), which comprise the intensity of the current absorbed by the motor (12) and the trend of the voltage supplied to it, - time parameters comprising the date and time of day, and - environmental parameters. Furthermore, the present invention relates to a method for actuation control, particularly for electrical disconnectors, characterized in that it consists in - detecting operating parameters of the disconnector (14), - processing the operating parameters and, in emergency situations, controlli.

IPC Classes  ?

• H01H 11/00 - Apparatus or processes specially adapted for the manufacture of electric switches
• H01H 31/34 - Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact adapted to engage an overhead transmission line, e.g. for branching

Abstract

A semi-pantograph disconnector, comprising - a base (11), which supports a motor kinematic system (12), - an arm (13), which has a shoe (14) for gripping a dropper (15) and is hinged to the base (11) so as to be able to oscillate in order to pass reversibly from a disconnection configuration, in which the arm (13) is collapsed onto the base (11), to a contact configuration, in which the arm (13) is divaricated from the base (11) so as to connect by means of the shoe (14) to the dropper (15), - a rod (16), which is functionally connected to the shoe (14) in order to actuate it, - a cam device (17) for actuating the rod (16), which coordinates kinematically the opening of the shoe (14) and a first rotation of the arm (13) from the disconnection configuration to the contact configuration, - a semi-pantograph device (18), which is functionally connected to the rod (16), to the arm (13) and to the motor kinematic system (12), defining a kinematic sequence for closing the shoe (14), after the first rotation of the arm (13), and a kinematic sequence for opening the shoe (14), which is preliminary to a second rotation of the arm (13) which moves it from the contact configuration to the disconnection configuration.

IPC Classes  ?

• H01H 31/36 - Contact moved by pantograph
• H01H 3/42 - Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric