The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2006
Filed:
Nov. 21, 2000
Donato Colonna, Milan, IT;
Luciano Di Maio, Milan, IT;
Donato Colonna, Milan, IT;
Luciano Di Maio, Milan, IT;
ABB T&D Technology Ltd, , CH;
Abstract
The present invention provides a digital protection and control (P & C) device for a power distribution network, which comprises a control unit and human-machine interface (HMI) for allowing a user access to the control unit. The control unit comprises a microprocessor that exchanges data information with the HMI. The digital P & C device, according to the present invention, further comprises a user authentication mechanism for regulating the access of a user to the control unit. This user authentication mechanism comprises an electronic authentication device, associable with the mentioned HMI, which stores first predefined data/information. This first predefined data/information comprises at least a user identification code, for establishing the identity of a user; and a user access code, for establishing the access mode of the user to the control unit. In addition, the electronic authentication device is able to communicate with the control unit, when it is associated with the HMI of the digital P & C device.