US3277345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static distance relay with reduced transient overreach
Assignee: General Electric Co
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Filing: 1963-02-07
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Granted: 1966-10-04
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Expires: 1983-02-07
Abstract
No abstract record available.
Inventors
- 👤 James E Waldron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:14
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/38; H02H3/382
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A DISTANCE RELAY RESPONSIVE TO THE OCCURRENCE OF A FAULT ON AN ELECTRIC POWER TRANSMISSION LINE, COMPRISING: (A) FIRST MEANS, RESPONSIVE TO LINE CURRENT, ADAPTED TO BE COUPLED TO THE LINE FOR DEVELOPING A FIRST COMPONENT VOLTAGE RELATED TO LINE CURRENT BY A PREDETERMINED CONSTANT IMPEDANCE; (B) SECOND MEANS, RESPONSIVE TO LINE VOLTAGE, ADAPTED TO BE COUPLED TO THE LINE FOR DEVELOPING A REFERENCE VOLTAGE DEPENDENT ON LINE VOLTAGE; (C) THIRD MEANS CONNECTED TO SAID FIRST AND SECOND MEANS FOR PROVIDING AN OPERATING VOLTAGE DEPENDENT ON THE VECTORIAL COMBINATION OF SAID FIRST COMPONENT VOLTAGE AND A SECOND COMPONENT VOLTAGE DERIVED FROM LINE VOLTAGE; (D) STATIC CIRCUIT MEANS CONNECTED TO SAID SECOND AND THIRD MEANS FOR PRODUCING AN OUTPUT CONTROL SIGNAL IN RESPONSE TO PREDETERMINED RELATIONSHIPS BETWEEN SAID OPERATING AND REFERENCE VOLTAGES, SAID PREDETERMINED RELATIONSHIPS BEING INDICATIVE OF THE OCCURRENCE OF A LINE FAULT WITHIN THE OHMIC REACH OF THE RELAY; AND
Claim 2
Dependent Claim
151 words
A DISTANCE RELAY RESPONSIVE TO THE OCCURRENCE OF A FAULT ON AN ELECTRIC POWER TRANSMISSION LINE, COMPRISING: (A) FIRST MEANS, RESPONSIVE TO LINE CURRENT, ADAPTED TO BE COUPLED TO THE LINE FOR DEVELOPING A FIRST COMPONENT VOLTAGE RELATED TO LINE CURRENT BY A PREDETERMINED CONSTANT IMPEDANCE; (B) SECOND MEANS, RESPONSIVE TO LINE VOLTAGE, ADAPTED TO BE COUPLED TO THE LINE FOR DEVELOPING A REFERENCE VOLTAGE DEPENDENT ON LINE VOLTAGE; (C) THIRD MEANS CONNECTED TO SAID FIRST AND SECOND MEANS FOR PROVIDING AN OPERATING VOLTAGE DEPENDENT ON THE VECTORIAL COMBINATION OF SAID FIRST COMPONENT VOLTAGE AND A SECOND COMPONENT VOLTAGE DERIVED FROM LINE VOLTAGE; (D) STATIC CIRCUIT MEANS CONNECTED TO SAID SECOND AND THIRD MEANS FOR PRODUCING AN OUTPUT CONTROL SIGNAL IN RESPONSE TO PREDETERMINED RELATIONSHIPS BETWEEN SAID OPERATING AND REFERENCE VOLTAGES, SAID PREDETERMINED RELATIONSHIPS BEING INDICATIVE OF THE OCCURRENCE OF A LINE FAULT WITHIN THE OHMIC REACH OF THE RELAY; AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |