Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
Apparatus for measuring voltage on an above ground power line conductor comprising: a generally toroidal shaped housing removably attached to said above ground conductor; means for electrically connecting said housing to said conductor, whereby said housing and said conductor are at the same potential; a metal plate mounted on the surface of said housing, said plate and said housing being separated by insulating material; and said plate connected to said housing through a low impedance measuring means whereby said plate and said housing are at the same potential and whereby an equivalent capacitor is formed between said plate and ground; said low impedance measuring means connected to said plate and said housing comprising an operational amplifier for measuring current equal to current in said equivalent capacitor, said current in said equivalent capacitor being proportional to the voltage on said power line conductor.
Claim 2
Dependent Claim
142 words
Apparatus for measuring voltage on an above ground power line conductor comprising: a generally toroidal shaped housing removably attached to said above ground conductor; means for electrically connecting said housing to said conductor, whereby said housing and said conductor are at the same potential; a metal plate mounted on the surface of said housing, said plate and said housing being separated by insulating material; and said plate connected to said housing through a low impedance measuring means whereby said plate and said housing are at the same potential and whereby an equivalent capacitor is formed between said plate and ground; said low impedance measuring means connected to said plate and said housing comprising an operational amplifier for measuring current equal to current in said equivalent capacitor, said current in said equivalent capacitor being proportional to the voltage on said power line conductor.
Claim 3
Dependent Claim
35 words
Apparatus as defined in claim 1 wherein said operational amplifier includes a feedback capacitor connected between an input of said amplifier and an output of said amplifier and wherein said amplifier functions as an integrator.
Claim 4
Dependent Claim
33 words
Apparatus as defined in claim 2 wherein said output of said amplifier provides an output voltage signal that is proportional to the current in an equivalent capacitor formed between said plate and ground.
Claim 5
Dependent Claim
30 words
Apparatus as defined in claim 1 wherein the length and width of said plate are very large relative to the width of the separation between said plate and said housing.
Claim 6
Dependent Claim
164 words
Apparatus for measuring voltage on a high voltage, above ground power conductor comprising: a metallic case adjacent to said above ground conductor and in electrical contact with said conductor; at least one metallic plate located on the surface of said case; insulating material separating said plate and said case, whereby a first equivalent capacitor is formed between said plate and ground and a second equivalent capacitor is formed between said plate and said conductor; a low impedance current measuring means connected between said plate and said metallic case in electrical contact with said conductor whereby said measuring means shunts said second capacitor and the potential between said plate and ground is equal to the potential between said conductor and ground; said low impedance current measuring means connected to said plate and said case comprising an operational amplifier for measuring current equal to current in said first equivalent capacitor, said current in said first equivalent capacitor being proportional to the voltage on said power conductor.
Claim 7
Dependent Claim
164 words
Apparatus for measuring voltage on a high voltage, above ground power conductor comprising: a metallic case adjacent to said above ground conductor and in electrical contact with said conductor; at least one metallic plate located on the surface of said case; insulating material separating said plate and said case, whereby a first equivalent capacitor is formed between said plate and ground and a second equivalent capacitor is formed between said plate and said conductor; a low impedance current measuring means connected between said plate and said metallic case in electrical contact with said conductor whereby said measuring means shunts said second capacitor and the potential between said plate and ground is equal to the potential between said conductor and ground; said low impedance current measuring means connected to said plate and said case comprising an operational amplifier for measuring current equal to current in said first equivalent capacitor, said current in said first equivalent capacitor being proportional to the voltage on said power conductor.
Claim 8
Dependent Claim
35 words
Apparatus as defined in claim 5 wherein said operational amplifier includes a feedback capacitor connected between an input of said amplifier and an output of said amplifier and wherein said amplifier functions as an integrator.
Claim 9
Dependent Claim
29 words
Apparatus as defined in claim 5 wherein said low impedance current measuring means provides an output voltage signal that is proportional to the current in said first equivalent capacitor.
Claim 10
Dependent Claim
30 words
Apparatus as defined in claim 5 wherein the length and width of said plate are very large relative to the width of the separation between said plate and said housing.
Claim 11
Dependent Claim
22 words
Apparatus as defined in claim 5 wherein said metallic case is generally toroidal in shape and is removably attached to said conductor.