Electricity: measuring and testing – Electrostatic field
Patent
1983-02-17
1985-05-28
Karlsen, Ernest F.
Electricity: measuring and testing
Electrostatic field
324 72, 340661, G01R 2912
Patent
active
045203180
ABSTRACT:
An electric field strength indicator for use with high voltage conductors comprises a capacitive probe mounted within a tubular shield having an insulating spacer at one end for locating the unit with respect to a conductor under test. The probe is electrically coupled to a signalling circuit and is movable axially within the shield to a position at which a threshold response is obtained. Such position, which denotes the conductor voltage, is read on a scale provided. Because of the shield the device is directional, the probe being shielded from neighboring conductors.
REFERENCES:
patent: 2482016 (1949-09-01), McCoy
patent: 3798541 (1974-03-01), Campbell, Jr. et al.
patent: 3829776 (1974-08-01), Lozoya
patent: 4266184 (1981-05-01), Devine
Danielski Andrew
Hascal Marcel
Lopez Sergio
Watson Donald A.
Karlsen Ernest F.
O'Shea Kevin D.
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