US3886448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for testing high-voltage dividers
Assignee: Individual
•
Filing: 1973-11-05
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Granted: 1975-05-27
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Expires: 1993-11-05
Abstract
Abstract Method of and apparatus for testing high-voltage dividers under actual working conditions, based upon a comparison of the conversion ratio of the dividers, under operating conditions, with the conversion ratio of a low-voltage reference voltage divider. An additional or auxilliary high-voltage divider is connected in parallel with the divider being tested, and the reference voltage divider is inserted in the circuit of the additional divider. In one position of a selector switch the reference divider is short-circuited and a null indicator is connected between the outputs of the divider being tested and the additional divider, while in the second position of the switch a recording device is connected between the outputs of the divider being tested and the reference divider.
Inventors
- 👤 Ivan Fedorovich Drabenko
- 👤 Ivan Yakovlevich Daniljuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:07
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/40; G01R15/00; G01R15/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
158 words
A method of testing a high-voltage divider, for example for several hundreds kilovolts, under actual high-voltage working conditions, comprising the steps of comparing the conversion ratio of the divider being tested under actual operating conditions with the conversion ratio of a low-voltage reference voltage divider which is selected to be equal to the rated value of that of the tested divider; connecting an additional voltage divider in parallel with the tested divider and adjusting the conversion ratio of the additional divider to be equal to that of the tested divider; operating both the tested divider and the reference divider under their own working voltages, that across the latter being lower by several orders than that across the former; inserting the reference divider in the circuit of the additional divider; then measuring a potential difference between the outputs of the tested divider and the reference divider; and calculating the conversion ratio of the tested divider from the potential difference.
Claim 2
Independent Claim
158 words
A method of testing a high-voltage divider, for example for several hundreds kilovolts, under actual high-voltage working conditions, comprising the steps of comparing the conversion ratio of the divider being tested under actual operating conditions with the conversion ratio of a low-voltage reference voltage divider which is selected to be equal to the rated value of that of the tested divider; connecting an additional voltage divider in parallel with the tested divider and adjusting the conversion ratio of the additional divider to be equal to that of the tested divider; operating both the tested divider and the reference divider under their own working voltages, that across the latter being lower by several orders than that across the former; inserting the reference divider in the circuit of the additional divider; then measuring a potential difference between the outputs of the tested divider and the reference divider; and calculating the conversion ratio of the tested divider from the potential difference.
Claim 3
Independent Claim
142 words
An apparatus for testing a high-voltage divider under actual working conditions, comprising: a low-voltage reference divider having an output; a null indicator having two outputs, one of them connected to the output of the divider being tested; a variable-output additional high-voltage divider connected in parallel with the tested divider and having an output, said reference divider being inserted in the circuit of said additional divider; a recording device having two inputs, one of them connected to the output of the tested divider; a selector switch arranged so that in one position thereof said reference divider is short-circuited and the second input of said null indicator is connected to said output of the additional divider, while in a second position of said switch the second input of said recording device is connected to said output of the reference divider; and a high-voltage lead-in.
Claim 4
Independent Claim
142 words
An apparatus for testing a high-voltage divider under actual working conditions, comprising: a low-voltage reference divider having an output; a null indicator having two outputs, one of them connected to the output of the divider being tested; a variable-output additional high-voltage divider connected in parallel with the tested divider and having an output, said reference divider being inserted in the circuit of said additional divider; a recording device having two inputs, one of them connected to the output of the tested divider; a selector switch arranged so that in one position thereof said reference divider is short-circuited and the second input of said null indicator is connected to said output of the additional divider, while in a second position of said switch the second input of said recording device is connected to said output of the reference divider; and a high-voltage lead-in.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |