US3560798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breaker reclosing and lockout relay
Assignee: Westinghouse Electric Corp
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Filing: 1969-04-24
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Granted: 1971-02-02
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Expires: 1989-04-24
Abstract
Abstract A reclosing solid state relaying network which eliminates the necessity for the usual 52x breaker contact (a contact that closes during the closing movement of a power circuit breaker) and utilizes an existing 52b contact (which is a contact closed solely when the breaker is in wide open condition) associated with the usual green lamp used to indicate an open circuit condition of the breaker thereby eliminating the cost of the additional wiring from the switch yard to the control house and enabling the use of breakers having no 52x contact. The solid state relaying network may be arranged to control the operation of a single breaker or in its more complete form arranged to control a plurality of breakers in a ''''breaker-and-a-half or ring bus arrangement'''' to lockout upon the second reclosure of a breaker into a faulted power line thereby eliminating further breaker reclosures upon a faulted line as occurred in prior art systems.
Inventors
- 👤 Nathaniel D Tenebaum
- 👤 Walter A Elmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:37
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/02; H02H3/06; H02H3/07
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
169 words
In a relaying apparatus for reclosing a circuit breaker, a signal producing circuit, a single shot pulser connected to said signal producing circuit and operable to provide an output signal at its output connection solely for a desired time period subsequent to actuation of said signal producing circuit, a first AND network having a pair of inputs and an output, a first timer, a flip-flop having a pair of input connections and a first output connection, first circuit means connecting one of said input connections of said flip-flop to said output connection of said pulser, second circuit means connecting the other of said input connections of said flip-flop through said timer to said output of said AND network, a breaker closing relay, third circuit means connecting said output connection of said flip-flop to said relay and to one of said input connections of said AND network, and a fourth circuit means connecting the other input connection of said AND network to the contacts of said relay for actuation thereby.
Claim 2
Dependent Claim
169 words
In a relaying apparatus for reclosing a circuit breaker, a signal producing circuit, a single shot pulser connected to said signal producing circuit and operable to provide an output signal at its output connection solely for a desired time period subsequent to actuation of said signal producing circuit, a first AND network having a pair of inputs and an output, a first timer, a flip-flop having a pair of input connections and a first output connection, first circuit means connecting one of said input connections of said flip-flop to said output connection of said pulser, second circuit means connecting the other of said input connections of said flip-flop through said timer to said output of said AND network, a breaker closing relay, third circuit means connecting said output connection of said flip-flop to said relay and to one of said input connections of said AND network, and a fourth circuit means connecting the other input connection of said AND network to the contacts of said relay for actuation thereby.
Claim 3
Dependent Claim
129 words
The combination of claim 1 in which there is provided a second AND network having first and second input connections and an output connection, said third circuit means includes said first inputs and output connections of said second AND network, third and fourth timers, a latching network having latching and unlatching connections and an output connection, fifth circuit means connecting said second input connection of said second AND network to said output connection of said latching network and including said third timer, sixth circuit means connecting said unlatching connection of said latching network to at least one of said single-shot pulses and said first timer, said sixth circuit including said fourth timer, a first control device, and seventh circuit means connecting said first control device to said latching connection.
Claim 4
Dependent Claim
58 words
The combination of claim 2 in which there is provided a third AND network having first and second input connections and an output connection, said seVenth circuit including said first input and said output connections of said third AND network, and an eighth circuit means connecting said contacts to said second input connection of said third AND network.
Claim 5
Dependent Claim
51 words
The combination of claim 2 in which there is provided an OR network having first and second input connections and an output connection, said sixth circuit including said first input and said output connections of said OR network, and circuit-controlling means connected to said second input connections of said OR network.
Claim 6
Dependent Claim
24 words
The combination of claim 4 in which the timing interval of said third timer is less than the timing interval of said first timer.
Claim 7
Dependent Claim
113 words
A breaker control device resulting from the combination of two relaying apparatuses as set forth in claim 5 and in which said signal producing circuits are connected together for common actuation by contacts actuated by said breaker, in which both of said circuit-controlling means are connected for actuation by a common circuit and said first control device are separately controlled, in which said flip-flop of one of said two relaying apparatuses is provided with a second output connection, in which there is provided a circuit-controlling network, and in which a tenth circuit means connects said circuit controlling network to said second output connection of said flip-flop of said one of said two apparatuses.
Claim 8
Dependent Claim
43 words
The combination of two breaker control devices as set forth in claim 6 and in which said circuit-controlling network of one of said two breaker control devices is connected to control said common circuit of the other of said two breaker control devices.
Claim 9
Dependent Claim
180 words
The combination of claim 7 in which there is included first and second breakers controlling the connection of a power line to a pair of electrically energized supply buses, fault detecting means associated with said power line and with both of said breakers, said fault detector being effective upon the occurrence of a fault on said power line to trip both of said breakers to disconnect said power line from both of said buses, circuit means connecting each of said breaker closing relays of said other of said two breaker control devices to one of said breakers, and circuit means connecting said breaker closing relay associated with said one of said two relaying apparatuses of said one of said two breaker control devices to the other of said breakers, the time interval of said third timer of said one of said two relaying apparatuses of said one of said two breaker control devices being less than the time interval of said third timer of said one of said two relaying apparatuses of said other of said two breaker control devices.
Claim 10
Dependent Claim
205 words
In a relaying apparatus for reclosing a circuit breaker, first switching means actuated as a function of the operating conditions of said breaker, a first bistable network having first and second stable operating conditions, a first circuit connecting said first switching means to said bistable network and effective as a consequence of the actuation of said breaker out of its fully opened condition to actuate said bistable network from its said first to its said second condition, a circuit breaker closing network connected between said breaker and said bistable network and effective to actuate said breaker to a closed position solely when said bistable network is in its said first condition, a second circuit connected between said first switching means and said bistable network of said second circuit including a first timer effective to time out a desired interval as a consequence of being actuated from a reset condition as a result of the actuation of said breaker in a closing direction, said timer being effective upon timing out to actuate said bistable network from its said second to its said first condition, said bistable network when in its said second condition being effective to prevent closure of said breaker by said breaker closing network.
Claim 11
Dependent Claim
205 words
In a relaying apparatus for reclosing a circuit breaker, first switching means actuated as a function of the operating conditions of said breaker, a first bistable network having first and second stable operating conditions, a first circuit connecting said first switching means to said bistable network and effective as a consequence of the actuation of said breaker out of its fully opened condition to actuate said bistable network from its said first to its said second condition, a circuit breaker closing network connected between said breaker and said bistable network and effective to actuate said breaker to a closed position solely when said bistable network is in its said first condition, a second circuit connected between said first switching means and said bistable network of said second circuit including a first timer effective to time out a desired interval as a consequence of being actuated from a reset condition as a result of the actuation of said breaker in a closing direction, said timer being effective upon timing out to actuate said bistable network from its said second to its said first condition, said bistable network when in its said second condition being effective to prevent closure of said breaker by said breaker closing network.
Claim 12
Dependent Claim
26 words
The combination of claim 9 in which said first switching meAns comprises contacts held in closed position when said breaker is in its open circuit condition.
Claim 13
Dependent Claim
37 words
The combination of claim 9 including a third circuit connecting said bistable network to said timer and effective when said bistable network is in its said first condition to place said timer in its said reset condition.
Claim 14
Dependent Claim
33 words
The combination of claim 11 in which said second circuit is effective to initiate the timing by said timer solely subsequent to the actuation of said bistable network into its said second condition.
Claim 15
Dependent Claim
27 words
The combination of claim 12 in which said timer acts to time out said desired interval solely when said breaker is out of its fully open condition.
Claim 16
Dependent Claim
93 words
The combination of claim 9 in which said first circuit includes a monostable network, said monostable network being characterized by the fact that it normally remains in a first condition and may be actuated into a second condition solely for a given time interval after which said monostable network will return to and remain in its said first condition irrespective of the time interval that said monostable network remains actuated, said monostable network being actuated into said second condition solely as a consequence of the actuation of said breaker in said closing direction.
Claim 17
Dependent Claim
94 words
The combination of claim 13 in which said first circuit includes a monostable network, said monostable network being characterized by the fact that it normally remains in a first condition and may be actuated into a second condition solely for a given time interval after which said monostable network will return to and remain in its said first condition irrespective of the time interval that said monostable network remains actuated, said monostable network being actuated into its said second condition solely as a consequence of the actuation of said breaker in said closing direction.
Claim 18
Dependent Claim
78 words
The combination of claim 9 in which said breaker closing network includes a first control network having a blocking and an unblocking condition, said control network being effective when in its said blocking condition to prevent closure of said breaker by said bistable network, said control network being effective when in its said unblocking condition to permit closure of said breaker by said bistable network, and third circuit means for actuating said control network into its said conditions.
Claim 19
Dependent Claim
82 words
The combination of claim 16 in which said control network includes a second timer effective to time out a desired interval as a consequence of being actuated from a reset condition as a result of the actuation of said control network, said control network further including means normally maintaining said second timer in its said reset condition, said second timer being effective to place said control network in its said unblocking condition solely subsequent to the timing out of said desired interval.
Claim 20
Dependent Claim
53 words
The combination of claim 17 in which said means which normally maintains said second timer in its said reset condition is connected to said second circuit and is actuated thereby to maintain said second timer in its said reset condition as a consequence of the actuation of said second circuit by said breaker.
Claim 21
Dependent Claim
88 words
The combination of claim 18 in which said means which normally maintains said second timer in its said reset condition includes a second control network having a blocking condition in which said second timer is prevented from timing out its said desired interval and having an unblocking condition to permit said second timer to time out its said desired interval, and means normally maintaining said second control network in its said blocking condition and which is actuable to place said second control network in its said unblocking condition.
Claim 22
Dependent Claim
46 words
The combination of claim 19 which includes locking means associated with said second control network and operable to maintain said second control network in its said unblocking condition subsequent to actuation thereof by said normally maintaining means irrespective of the actUation of said normally maintaining means.
Claim 23
Dependent Claim
105 words
The combination of claim 20 in which said means which normally maintains said second timer in its said reset condition includes a third timer and effective to delay the actuation of the timing out of said desired interval by said second timer as a consequence of the actuation thereof from said second circuit, said third timer further being effective to delay the interruption of the timing out of its said desired interval as a consequence of the actuation thereof from said second circuit. 22 The combination of claim 21 in which said third timer is located between said second circuit and said second control network.
Claim 24
Dependent Claim
61 words
The combination of claim 22 in which additional control means is coupled to said third timer, said additional control means being effective to prevent the operation of said third timer to place said second control network in condition to initiate the timing out of said second timer into a condition to place said first control network in its said unblocking condition.
Claim 25
Dependent Claim
47 words
The combination of claim 9 in which there is provided a circuit-controlling network connected to said bistable network, said circuit-controlling network including circuit-controlling means actuable between a first and a second circuit controlling condition as a consequence of the change in said condition of said bistable network.
Claim 26
Dependent Claim
32 words
The combination of claim 24 in which said circuit-controlling network includes means conductively isolating said circuit controlling means from the portion of said circuit-controlling network which is connected to said bistable network.
Claim 27
Dependent Claim
13 words
The combination of claim 25 in which said isolating means includes a transformer.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |