CN217590366U - Transformer automatic switching device - Google Patents
Transformer automatic switching device Download PDFInfo
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- CN217590366U CN217590366U CN202221350893.9U CN202221350893U CN217590366U CN 217590366 U CN217590366 U CN 217590366U CN 202221350893 U CN202221350893 U CN 202221350893U CN 217590366 U CN217590366 U CN 217590366U
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- 238000012423 maintenance Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a transformer automatic switching device, wherein the outer wall of the shell is provided with an input terminal, an output terminal and a closing terminal; in the shell, the input end of the input rectifying circuit is connected with the input terminal, and the output end of the input rectifying circuit is connected with the coil of the input relay; the input end of the output rectifying circuit is connected with the output terminal, and the output end of the output rectifying circuit is connected with the coil of the output relay; the input end of the closing rectification circuit is connected with the input terminal, and the output end of the closing rectification circuit is sequentially connected with the normally open contact of the input relay, the normally closed contact of the output relay and the closing terminal in series. The advantages are that: the state of a power supply system can be monitored, after the fault of the power supply system is repaired, the switch-on terminal can send a signal to the switch-on coil, the low-voltage circuit breaker is automatically switched on, the power supply on the low-voltage side is recovered, manual switch-on operation of maintainers is not needed, the labor intensity of workers is reduced, the stability and the economic benefit of power supply equipment are enhanced, the power failure time is shortened, and the user satisfaction on the load side is improved.
Description
The technical field is as follows:
the utility model relates to a power equipment, in particular to transformer automatic switching device.
Background art:
when a main network line of the power system breaks down, the main network enters a power-off state, and meanwhile, a voltage-loss release of the low-voltage circuit breaker is disengaged, so that the circuit breaker is switched off and disconnected, and the low-voltage side box type transformer is also powered off. After the main network line recovers power transmission, the high-voltage side of the box-type transformer is electrified, but the voltage loss tripper of the low-voltage circuit breaker is always disconnected, so that the low-voltage circuit breaker is in a switching-off state, the load end is always in a power failure state, the maintenance personnel are required to manually store energy of the transformer and switch on the circuit breaker, and the power supply time of the load end and the workload of the personnel are increased.
The utility model has the following contents:
an object of the utility model is to provide a response is fast, the security is high, can reduce the transformer automatic switching device of personnel's operation.
The utility model discloses implement by following technical scheme: a transformer automatic switching device comprises a shell, wherein an input terminal, an output terminal and a closing terminal are arranged on the outer wall of the shell; an input rectifying circuit, an output rectifying circuit, a closing rectifying circuit, an input relay and an output relay are arranged in the shell; the input end of the input rectifying circuit is electrically connected with the input terminal, and the output end of the input rectifying circuit is electrically connected with the coil of the input relay; the input end of the output rectifying circuit is electrically connected with the output terminal, and the output end of the output rectifying circuit is electrically connected with the coil of the output relay; the input end of the closing rectification circuit is electrically connected with the input terminal, and the normally open contact of the input relay and the normally closed contact of the output relay are connected in series between the output end of the closing rectification circuit and the closing terminal.
Preferably, the input terminal and the output terminal are three-phase inputs.
Preferably, the power supply further comprises a working indicator light for displaying the operating state of the power supply, and the working indicator light is connected with the coil of the input relay in series.
The utility model has the advantages that: compared with the prior art, the automatic switching device is simple in structure and convenient to use, and can monitor the state of a power supply system and acquire voltage signals of the input end and the output end of the low-voltage circuit breaker when in use; when the power supply system fault is repaired, the device can send a closing signal to the closing coil through the closing terminal, automatically perform closing of the low-voltage circuit breaker, recover power supply of the low-voltage side, and do not need a maintenance worker to perform manual closing operation, so that the labor intensity of the working personnel is reduced, the stability and the economic benefit of the power supply equipment are enhanced, the power failure time is shortened, and the user satisfaction degree of the load side is improved.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a module connection diagram of the present invention.
The device comprises a shell 1, an input terminal 2, an input rectifying circuit 21, an input relay 22, an output terminal 3, an output rectifying circuit 31, an output relay 32, a closing terminal 4, a closing rectifying circuit 41, a normally open contact K1 of the input relay, a normally closed contact K2 of the output relay and a work indicator lamp 5.
The specific implementation mode is as follows:
example 1: the transformer automatic switching device shown in fig. 1 comprises a shell 1, an input terminal 2, an output terminal 3 and a closing terminal 4, wherein the input terminal 2, the output terminal 3 and the closing terminal 4 are arranged outside the shell; the input terminal 2 and the output terminal 3 are respectively connected with the input end and the output end of the low-voltage circuit breaker and are used for acquiring voltage information of the incoming end and the outgoing end of the low-voltage circuit breaker; the closing terminal 4 is connected with a closing coil of the low-voltage circuit breaker and controls the low-voltage circuit breaker to close; in the case 1, the input terminal 2 is connected in series with the coils of the input rectifying circuit 21 and the input relay 22; the output terminal 3 is connected in series with the coils of the output rectifying circuit 31 and the output relay 32; the input end of the closing rectification circuit 41 is connected with the input terminal 2 to collect the input voltage of the low-voltage circuit breaker, and the output end of the closing rectification circuit is connected in series with the normally open contact K1 of the input relay, the normally closed contact K2 of the output relay and the closing coil.
When the fault of a main network line of the power system is recovered, an input terminal 2 connected with the input end of the low-voltage circuit breaker has voltage, and an output terminal 3 connected with the output end of the low-voltage circuit breaker does not have a voltage signal, at the moment, the normally open contact K1 of the input relay and the normally closed contact K2 of the output relay are controlled to be in a closed state and an open state by the automatic switching device, the input end of the switching-on rectification circuit 41 sends a switching-on signal to a switching-on coil through a switching-on terminal 4, the switching-on coil is controlled to act, and automatic switching-on of a low-voltage side is achieved. When the main network line normally operates, the input terminal 2 and the output terminal 3 both have voltage signals, at the moment, the normally open contact K1 of the input relay and the normally closed contact K2 of the output relay are controlled to be in a closed state by the automatic switching device, no voltage signal is output from the switching-on terminal 4, the switching-on coil does not act, and the switching-on automatic switching malfunction can be effectively avoided.
In addition, an operation indicator lamp 5 is arranged in the shell 1, is connected with a coil of the input relay 22 in series and is used for indicating the operation state of the line where the automatic switching device is located, and when the input end of the low-voltage circuit breaker has voltage, the operation indicator lamp 5 emits light to indicate that the main line has no fault; when the input end of the low-voltage circuit breaker has no voltage, the work indicator lamp 5 is turned off, the main line has a fault, and after the fault of the main line is recovered, the work indicator lamp 5 is turned on by turning off, and the automatic switching device performs automatic switching.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The transformer automatic switching device is characterized by comprising a shell, wherein an input terminal, an output terminal and a switching-on terminal are arranged on the outer wall of the shell; an input rectifying circuit, an output rectifying circuit, a closing rectifying circuit, an input relay and an output relay are arranged in the shell; the input end of the input rectifying circuit is electrically connected with the input terminal, and the output end of the input rectifying circuit is electrically connected with the coil of the input relay; the input end of the output rectifying circuit is electrically connected with the output terminal, and the output end of the output rectifying circuit is electrically connected with the coil of the output relay; the input end of the closing rectification circuit is electrically connected with the input terminal, and the normally open contact of the input relay and the normally closed contact of the output relay are connected in series between the output end of the closing rectification circuit and the closing terminal.
2. The transformer automatic switching device according to claim 1, wherein the input terminal and the output terminal are three-phase input.
3. The transformer automatic switching device according to claim 1 or 2, further comprising a work indicator lamp for displaying an operation state thereof, wherein the work indicator lamp is connected in series with the coil of the input relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221350893.9U CN217590366U (en) | 2022-05-31 | 2022-05-31 | Transformer automatic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221350893.9U CN217590366U (en) | 2022-05-31 | 2022-05-31 | Transformer automatic switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217590366U true CN217590366U (en) | 2022-10-14 |
Family
ID=83528103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221350893.9U Expired - Fee Related CN217590366U (en) | 2022-05-31 | 2022-05-31 | Transformer automatic switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217590366U (en) |
-
2022
- 2022-05-31 CN CN202221350893.9U patent/CN217590366U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221014 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |