Programmable bus-tie relay having a plurality of selectable sett

Details Programmable bus-tie relay having a plurality of selectable sett Programmable bus-tie relay having a plurality of selectable sett

1990-01-25

1991-08-20

Deboer, Todd E.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307112, 364492, H01H 3500

Patent

active

050417371

ABSTRACT:
A bus-tie relay apparatus which includes a multi-position mechanical switch (54) and a logic circuit (56) responsive to the position of the mechanical switch (54) for producing digital signals on five digital lines (58), wherein a valid digital signal comprises the presence of high conditions on two, and two only, of said digital lines (58). A sensor (80) senses the condition of the digital lines (58) and retrieves the values of a relay element setting group from memory associated with that digital signal. A plurality of such relay element setting groups are stored in the apparatus, each one of which comprises values corresponding to the characteristics of an inplace relay associated with a particular one transmission line in a group thereof.

REFERENCES:
patent: 4710845 (1987-12-01), Demeyer
patent: 4724502 (1988-02-01), Kawahira et al.
patent: 4774621 (1988-09-01), Andow
patent: 4788647 (1988-11-01), McManus et al.

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