Boots – shoes – and leggings
Patent
1989-12-12
1992-06-02
Smith, Jerry
Boots, shoes, and leggings
371 113, 364133, G06F 1516
Patent
active
051192896
ABSTRACT:
A protective system for an electrical network includes input and output units (E/A-1, . . . , E/A-7) and a data processing unit. The input and output units detect and digitize incoming analog signals present at outlets (1, . . . , 7) of an electric-operating means which needs to be protected, for instance a bus bar. The digitized measurement signals are hierarchically connected/coupled to the data processing unit, in accordance with predetermined protective criteria. Thus, error signals which are generated in response to the detection of system failures are supplied via the input and output units (E/A-1, . . . E/A-7), and these error signals act upon switching stations provided at the outlets (1, . . . , 7). With each of the outlets, for instance outlet 3, there are associated two input and output units, for instance units E/A-1, and E/A-3, which units operate independently of one another. The data processing unit is in the form of a data-transfer and processing network and includes computers (T.sub.1, . . . , T.sub.6) which act through a plurality of network nodes. The protective device of the invention is characterized by having a high level of redundant circuitry and is modularly constructed to obtain system expandability and flexibility.
REFERENCES:
patent: 4327437 (1982-04-01), Gelderloos
patent: 4344134 (1982-08-01), Barnes
patent: 4376973 (1983-03-01), Chivers
patent: 4442521 (1984-04-01), Inaba et al.
patent: 4791547 (1988-12-01), Petroff
patent: 4953074 (1990-08-01), Kametani et al.
O. P. Malik and G. S. Hope; Design Concepts for a Distributed Microprocessor-Based . . . ; Aug. 1981; pp. 1721-1725.
K. Tanaka, et al.; Application of Microprocessors to the Control and Protection . . . ; Jan. 1980; pp. 344-351X.
H. Ungrad, et al; A Modern Supervisory Control Protection Concept for Enhancing Power . . . ; Sep., 1984; pp. 400-404.
Asea Brown Boveri Ltd.
Muir Patrick D.
Smith Jerry
LandOfFree
Device for protecting an electric operating means does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for protecting an electric operating means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for protecting an electric operating means will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2234374