US3988684A — Voltage transformer for an insulated high-voltage…

Claim 1

Independent Claim 163 words

A voltage transformer for a fully insulated high-voltage installation containing several conductors comprising: a plurality of electrodes corresponding to respective ones of the conductors, said electrodes being disposed outside of the arrangement of the conductors in such a manner that each one of said electrodes is disposed adjacent a corresponding one of the conductors, each of said electrodes and the conductor adjacent thereto conjointly defining a high-voltage capacitor; a plurality of low-voltage capacitors disposed outside of the region occupied by said electrodes, said low-voltage capacitors being connected to corresponding ones of said electrodes so as to cause corresponding ones of said high-voltage capacitors and said low-voltage capacitors to conjointly define respective capacitive voltage dividers; a plurality of summing amplifiers corresponding to respective ones of said electrodes, each of said summing amplifiers having an input for connecting the corresponding electrode thereto, the outputs of each one of said summing amplifiers being connected, respectively, to the inputs of the remaining ones of said summing amplifiers.

Claim 2

Dependent Claim 163 words

A voltage transformer for a fully insulated high-voltage installation containing several conductors comprising: a plurality of electrodes corresponding to respective ones of the conductors, said electrodes being disposed outside of the arrangement of the conductors in such a manner that each one of said electrodes is disposed adjacent a corresponding one of the conductors, each of said electrodes and the conductor adjacent thereto conjointly defining a high-voltage capacitor; a plurality of low-voltage capacitors disposed outside of the region occupied by said electrodes, said low-voltage capacitors being connected to corresponding ones of said electrodes so as to cause corresponding ones of said high-voltage capacitors and said low-voltage capacitors to conjointly define respective capacitive voltage dividers; a plurality of summing amplifiers corresponding to respective ones of said electrodes, each of said summing amplifiers having an input for connecting the corresponding electrode thereto, the outputs of each one of said summing amplifiers being connected, respectively, to the inputs of the remaining ones of said summing amplifiers.

Claim 3

Dependent Claim 57 words

The voltage transformer of claim 1, the conductors of the high-voltage installation being three in number and being the phase conductors of a three-phase system, the three conductors being arranged so as to be equidistant from each other, said electrodes being arranged uniformly on a circle having a center corresponding to the centroid of the three conductors.

Claim 4

Dependent Claim 17 words

The voltage transformer of claim 1 comprising a reference electrode disposed in surrounding relation to said electrodes.

Claim 5

Dependent Claim 21 words

The voltage transformer of claim 3 wherein the high-voltage installation includes a metal encapsulation, said reference electrode being said metal encapsulation.

Claim 6

Dependent Claim 64 words

The voltage transformer of claim 3, said reference electrode having a plurality of holes corresponding to respective ones of the electrodes of said plurality of electrodes, and a plurality of connecting leads connected to corresponding ones of the electrodes of said plurality of electrodes, said connecting leads being arranged so as to extend out through corresponding ones of said holes in an insulated manner.

Claim 7

Dependent Claim 86 words

The voltage transformer of claim 3 wherein the said high-voltage installation includes a metal encapsulation, said reference electrode and the encapsulation each having a plurality of holes corresponding to respective ones of the electrodes of said plurality of electrodes, and a plurality of connecting leads connected to corresponding ones of the electrodes of said plurality of electrodes, said connecting leads being arranged so as to extend out in an insulated manner through corresponding ones of said holes of said reference electrode and of the metal encapsulation.

Claim 8

Dependent Claim 23 words

The voltage transformer of claim 1 comprising a plurality of preamplifiers, said preamplifiers being connected ahead of corresponding ones of said summing amplifiers.

Claim 9

Dependent Claim 130 words

A voltage transformer for a fully insulated high-voltage, metal-encapsulated installation containing several conductors comprising: a plurality of electrodes corresponding to respective ones of the conductors, said electrodes being disposed outside of the arrangement of the conductors in such a manner that each one of said electrodes is disposed adjacent a corresponding one of the conductors, each of said electrodes and the conductor adjacent thereto conjointly defining a high-voltage capacitor; and a plurality of low-voltage capacitors disposed outside of the region occupied by said electrodes, said low-voltage capacitors being connected to a corresponding one of said high-voltage capacitors so as to conjointly define therewith respective capacitive voltage dividers, a reference electrode disposed in surrounding relation to said electrodes, and insulation insert means for insulating said reference electrode from the metal encapsulation.

Claim 10

Dependent Claim 130 words

A voltage transformer for a fully insulated high-voltage, metal-encapsulated installation containing several conductors comprising: a plurality of electrodes corresponding to respective ones of the conductors, said electrodes being disposed outside of the arrangement of the conductors in such a manner that each one of said electrodes is disposed adjacent a corresponding one of the conductors, each of said electrodes and the conductor adjacent thereto conjointly defining a high-voltage capacitor; and a plurality of low-voltage capacitors disposed outside of the region occupied by said electrodes, said low-voltage capacitors being connected to a corresponding one of said high-voltage capacitors so as to conjointly define therewith respective capacitive voltage dividers, a reference electrode disposed in surrounding relation to said electrodes, and insulation insert means for insulating said reference electrode from the metal encapsulation.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1979-10-26	1980-04-26	1980-10-26	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1983-10-26	1984-04-26	1984-10-26	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1987-10-26	1988-04-26	1988-10-26	$7700.00	Window Closed / Lapsed

Voltage transformer for an insulated high-voltage switching installation containing several conductors

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