CN220440423U - Power supply device for closing coil of circuit breaker and power station recovery system - Google Patents
Power supply device for closing coil of circuit breaker and power station recovery system Download PDFInfo
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- CN220440423U CN220440423U CN202322078364.9U CN202322078364U CN220440423U CN 220440423 U CN220440423 U CN 220440423U CN 202322078364 U CN202322078364 U CN 202322078364U CN 220440423 U CN220440423 U CN 220440423U
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- power supply
- relay
- circuit breaker
- coil
- closing coil
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- 238000011084 recovery Methods 0.000 title claims abstract description 9
- 230000007547 defect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of circuit breaker power supply, in particular to a power supply device for a closing coil of a circuit breaker and a power station recovery system. The power supply device comprises a device main body for supplying power to a closing coil of a controlled circuit breaker, wherein the device main body comprises a power supply circuit; the power supply circuit comprises a power supply battery, a first relay, a second relay and a third relay; through the structure, the power supply circuit can disconnect the power supply battery from being electrically connected with the switch-on coil of the circuit breaker after the main circuit of the circuit breaker is controlled to be powered off, so that the electric quantity of the power supply battery is prevented from being exhausted; the power station recovery system comprises the power supply device.
Description
Technical Field
The utility model relates to the technical field of circuit breaker power supply, in particular to a power supply device for a closing coil of a circuit breaker and a power station recovery system.
Background
When the circuit breaker is connected to the power supply main loop of the power station, the circuit breaker is connected to the power supply main loop by a normally open contact pair. In order to keep the normally open contact pair of the circuit breaker in a closed state when the power supply main circuit normally operates, a power supply battery needs to be connected to a closing coil of the circuit breaker to keep the closing coil in a power-on state all the time. Wherein the power supply battery is usually a rechargeable battery and is charged from the power supply main loop through a corresponding charging circuit.
When the power station is in a state of power failure of the main power supply loop caused by tripping and the like, the rechargeable battery cannot acquire electric quantity supplement from the charging circuit, and if the corresponding main power supply loop is not subjected to power transmission treatment for a long time, the situation of electric quantity exhaustion and the like of the rechargeable battery is easy to occur.
When the rechargeable battery is exhausted, even if the power supply main circuit is powered on, the power supply main circuit is difficult to recover because the closing coil of the circuit breaker cannot get power from the rechargeable battery. For this situation, a conventional operation is to use a power supply to supplement the electric quantity of the rechargeable battery, so as to restore the circuit breaker to a normal working state. The conventional operation has the defects of inconvenient operation and the like.
Disclosure of Invention
The utility model provides a power supply device for a closing coil of a circuit breaker and a power station recovery system, which can overcome certain or certain defects in the prior art.
The power supply device for the closing coil of the circuit breaker comprises a device main body for supplying power to the closing coil of the controlled circuit breaker, wherein the device main body comprises a power supply circuit; the power supply circuit comprises a power supply circuit,
a power supply battery having a positive input and a negative input;
the first relay is provided with 2 first normally open contact pairs and a first relay coil, wherein the 2 first normally open contact pairs are respectively connected with a positive input end and a negative input end and correspondingly form a positive output end and a negative output end;
a second relay having a first normally closed contact pair and a second relay coil,
a third relay having a second normally closed contact pair and a third relay coil;
the third relay coil is powered through a main loop where the controlled circuit breaker is located; one end of the second relay coil is connected with the negative input end, and the other end of the second relay coil is connected with the positive input end through a second normally closed contact; one end of the first relay coil is connected with the negative input end, and the other end of the first relay coil is connected with the positive input end through the second normally closed contact pair.
Through the structure, when the power supply main loop is powered off, the power supply circuit can disconnect the electric connection between the power supply battery and the closing coil of the controlled breaker, and the situation that the power supply battery is consumed under the condition of no power supply is avoided.
Preferably, the first relay is a contactor. The solution according to the utility model is preferably implemented.
Preferably, the second relay is a time relay. The solution according to the utility model is preferably implemented.
Preferably, the second relay is an intermediate relay. The solution according to the utility model is preferably implemented.
Preferably, two ends of the third relay coil are respectively connected to corresponding contacts of the main loop of the controlled circuit breaker. The solution according to the utility model is preferably implemented.
The power station recovery system comprises any one of the power supply devices for the closing coil of the circuit breaker.
Drawings
Fig. 1 is a circuit schematic diagram of a power supply circuit in embodiment 1.
Fig. 2 is a circuit block diagram of a power supply circuit in embodiment 1.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to examples. It is to be understood that the examples are illustrative of the present utility model and are not intended to be limiting.
Example 1
As shown in fig. 1-2, the present embodiment provides a power supply apparatus for a closing coil of a circuit breaker, which includes an apparatus main body for supplying power to the closing coil of a controlled circuit breaker, the apparatus main body including a power supply circuit; the power supply circuit comprises a power supply circuit,
a power supply battery having a positive input and a negative input;
the first relay is provided with 2 first normally open contact pairs and a first relay coil, wherein the 2 first normally open contact pairs are respectively connected with a positive input end and a negative input end and correspondingly form a positive output end and a negative output end;
a second relay having a first normally closed contact pair and a second relay coil,
a third relay having a second normally closed contact pair and a third relay coil;
the third relay coil is powered through a main loop where the controlled circuit breaker is located; one end of the second relay coil is connected with the negative input end, and the other end of the second relay coil is connected with the positive input end through a second normally closed contact; one end of the first relay coil is connected with the negative input end, and the other end of the first relay coil is connected with the positive input end through the second normally closed contact pair.
Wherein, the first relay selects contactor; the second relay is a time relay; the second relay is an intermediate relay.
Through above-mentioned structure, when the power supply main loop outage, this power supply circuit can break off the electric connection of power supply battery and controlled circuit breaker closing coil, avoids the power supply battery to take place under no electric quantity to supply the circumstances that the electric quantity was spent, so compare in prior art and need adopt a power supply to carry out the mode that the electric quantity was supplied to rechargeable battery, the mode of this embodiment is comparatively convenient.
1-2, when the power supply main loop normally supplies power, the third relay coil is kept to be electrified, the second normally-closed contact pair is in a normally-open state, the second relay coil is kept to be electrified, the first normally-closed contact pair is kept to be in a normally-open state, the first relay coil is electrified, and the 2 first normally-open contact pairs are kept to be in a normally-closed state, so that the power supply battery is kept to supply power to the closing coil of the controlled breaker;
when the power supply main loop is powered off, the third relay coil is powered off, the second normally-closed contact pair is in a normally-closed state, the second relay coil is powered off, the first normally-closed contact pair is in a normally-closed state, the first relay coil is powered off, and the 2 first normally-open contacts are in a normally-open state, so that the power supply battery is electrically connected with the closing coil of the controlled circuit breaker.
The first normally-closed contact can act in a delayed mode, so that a power station worker can conduct switching-on operation of the controlled breaker in the delayed time.
In this embodiment, two ends of the third relay coil are respectively connected to corresponding contacts of the main circuit of the controlled circuit breaker.
Example 2
The present embodiment provides a power station recovery system including the power supply apparatus for a breaker closing coil provided in embodiment 1.
It is to be understood that, based on one or several embodiments provided herein, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments, which do not exceed the protection scope of the present application.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the examples are merely illustrative of embodiments of the utility model and the actual construction is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (6)
1. A power supply unit for circuit breaker closing coil, its characterized in that: the device comprises a device main body for supplying power to a closing coil of a controlled circuit breaker, wherein the device main body comprises a power supply circuit; the power supply circuit comprises a power supply circuit,
a power supply battery having a positive input and a negative input;
the first relay is provided with 2 first normally open contact pairs and a first relay coil, wherein the 2 first normally open contact pairs are respectively connected with a positive input end and a negative input end and correspondingly form a positive output end and a negative output end;
a second relay having a first normally closed contact pair and a second relay coil,
a third relay having a second normally closed contact pair and a third relay coil;
the third relay coil is powered through a main loop where the controlled circuit breaker is located; one end of the second relay coil is connected with the negative input end, and the other end of the second relay coil is connected with the positive input end through a second normally closed contact; one end of the first relay coil is connected with the negative input end, and the other end of the first relay coil is connected with the positive input end through the second normally closed contact pair.
2. The power supply device for a circuit breaker closing coil of claim 1, wherein: the first relay is a contactor.
3. The power supply device for a circuit breaker closing coil of claim 1, wherein: the second relay is a time relay.
4. The power supply device for a circuit breaker closing coil of claim 1, wherein: the second relay is an intermediate relay.
5. The power supply device for a circuit breaker closing coil of claim 1, wherein: two ends of the third relay coil are respectively connected to corresponding contacts of the main loop of the controlled circuit breaker.
6. The power station recovery system is characterized in that: a power supply device for a circuit breaker closing coil comprising any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322078364.9U CN220440423U (en) | 2023-08-03 | 2023-08-03 | Power supply device for closing coil of circuit breaker and power station recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322078364.9U CN220440423U (en) | 2023-08-03 | 2023-08-03 | Power supply device for closing coil of circuit breaker and power station recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220440423U true CN220440423U (en) | 2024-02-02 |
Family
ID=89704052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322078364.9U Active CN220440423U (en) | 2023-08-03 | 2023-08-03 | Power supply device for closing coil of circuit breaker and power station recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220440423U (en) |
-
2023
- 2023-08-03 CN CN202322078364.9U patent/CN220440423U/en active Active
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