CN206460884U - Load ratio bridging switch based on vacuum tube - Google Patents
Load ratio bridging switch based on vacuum tube Download PDFInfo
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- CN206460884U CN206460884U CN201621391082.8U CN201621391082U CN206460884U CN 206460884 U CN206460884 U CN 206460884U CN 201621391082 U CN201621391082 U CN 201621391082U CN 206460884 U CN206460884 U CN 206460884U
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Abstract
A kind of load ratio bridging switch based on vacuum tube, include the load ratio bridging switch body of the high pressure conversion with three-phase high-voltage end of incoming cables and the low pressure serial to parallel conversion of three-phase low-voltage end of incoming cables, it is provided between the three-phase high-voltage end of incoming cables of the load ratio bridging switch body of the high pressure conversion of three-phase high-voltage end of incoming cables between vacuum tube and coil in each phase of the load ratio bridging switch body of the low pressure serial to parallel conversion of three-phase low-voltage end of incoming cables and is provided with vacuum tube, three phase terminals by vacuum tube respectively to high pressure conversion are changed, the coil of each phase of low pressure serial to parallel conversion is changed respectively by vacuum tube, no longer capacitance switch is using directly switching, no longer contact burning, therefore the margin of safety of load ratio bridging switch is improved.
Description
First, technical field
The utility model is related to a kind of load ratio bridging switch, especially a kind of load ratio bridging switch based on vacuum tube.
2nd, background technology
The total losses of China's transformer account for 10% or so of system generated energy, and in power network total losses 60% -65% are accounted for,
In low voltage electric network loss, 70% loss there are about in distribution transformer thereon, especially because seasonal strong, the load peak of rural power grids load
The characteristics of paddy difference is big, causes the loss ratio of current China's rural power grids distribution transformer larger, causes a large amount of electric power resources to waste,
Capacitance-adjustable transformer is the minimum transformer of loss of energy, and loaded capacity regulating voltage regulating shunting switch is mainly used in intermediate and low electric network and matched somebody with somebody
Piezoelectric transformer, in reduction, the loss of low voltage distribution transformer, improves voltage quality, reduces the waste of electric power resource, therefore be based on
The load ratio bridging switch of vacuum tube is a kind of important power components, in the existing load ratio bridging switch based on vacuum tube,
Capacitance switch is using directly switching, and contact burning amount is big, and big to electric network influencing, margin of safety is low.
Based on existing technical problem, technical characteristic and technique effect, application technical scheme of the present utility model is made.
3rd, the content of the invention
Object of the present utility model is a kind of load ratio bridging switch based on vacuum tube.
In order to overcome above-mentioned technical disadvantages, the purpose of this utility model is to provide a kind of loaded tap-off based on vacuum tube and opened
Close, therefore improve the margin of safety of load ratio bridging switch.
To reach above-mentioned purpose, the utility model is adopted the technical scheme that：Include with three-phase high-voltage end of incoming cables
The load ratio bridging switch body of high pressure conversion and the low pressure serial to parallel conversion of three-phase low-voltage end of incoming cables, the height in three-phase high-voltage end of incoming cables
Vacuum tube is provided between the three-phase high-voltage end of incoming cables for the load ratio bridging switch body that buckling is changed and in three-phase low-voltage end of incoming cables
Low pressure serial to parallel conversion load ratio bridging switch body each phase in coil between be provided with vacuum tube.
Due to devising load ratio bridging switch body, the three phase terminals by vacuum tube respectively to high pressure conversion are changed,
The coil of each phase of low pressure serial to parallel conversion is changed respectively by vacuum tube, no longer capacitance switch is used and directly cut
Change, no longer contact burning, therefore improve the margin of safety of load ratio bridging switch.
The utility model is devised, and concentrates loaded tap-off to open according to by way of the break-make of vacuum tube realizes that coil is converted
Close the technical characteristic of body.
The utility model is devised, a kind of load ratio bridging switch of high pressure conversion for capacitance-adjustable transformer, includes true
Blank pipe T1, vacuum tube T2, vacuum tube T3, resistance R1, resistance R2 and resistance R3,
A is set to second termination, the C that first termination of three-phase high-voltage end of incoming cables, B are set to three-phase high-voltage end of incoming cables
The 3rd termination of three-phase high-voltage end of incoming cables is set to, first termination, the Y1 that X1 is set to three-phase high voltage coil neutral point are set
The 3rd termination that second termination of three-phase high voltage coil neutral point, Z1 are set to three-phase high voltage coil neutral point is set to, N is set
The termination of three-phase common neutral is set to,
Vacuum tube T1 one end be respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations and vacuum tube T1 it is another
End is set to be connected with N-terminal head, and vacuum tube T2 one end is respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations and true
The blank pipe T2 other end is respectively set to be connected with one end of resistance R1 one end, resistance R2 one end and resistance R3, vacuum tube
T3 one end is respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations, resistance the R1 other end, the vacuum tube T3 other end
It is set to link together with B terminations, resistance the R2 other end, the vacuum tube T3 other end and C-terminal head are set to be connected to one
Rise, resistance the R3 other end, the vacuum tube T3 other end and A terminations are set to link together.
The utility model is devised, a kind of load ratio bridging switch of low pressure serial to parallel conversion for capacitance-adjustable transformer, comprising
There are vacuum tube T5, vacuum tube T6, vacuum tube T7, vacuum tube T8, resistance R5, resistance R6 and resistance R7,
A is set to second termination, the c that first termination of three-phase low-voltage end of incoming cables, b are set to three-phase low-voltage end of incoming cables
The 3rd termination of three-phase low-voltage end of incoming cables is set to, a1 is set to a termination of first group of coil of a phases, x11 and is set to a phases
Another termination of first group of coil, a2 are set to a termination of second group of coil of a phases, x12 and are set to second group of coil of a phases
Another termination, b1 is set to another end that a termination of first group of coil of b phases, y11 are set to first group of coil of b phases
Head, b2 are set to another termination that a termination of second group of coil of b phases, y12 are set to second group of coil of b phases, and c1 is set
Another termination of first group of coil of c phases, c2, which are set to, for a termination of first group of coil of c phases, z11 is set to c phases second
One termination of group coil, z12 are set to another termination of second group of coil of c phases, and it is neutral that x2 is set to three-phase low-voltage coil
Second termination, the z2 that first termination of point, y2 are set to three-phase low-voltage coil neutral point are set in three-phase high voltage coil
3rd termination of property point,
Resistance R5 one end, vacuum tube T6 one end and a1 terminations be set to link together and resistance R5 the other end
It is set to be connected with vacuum tube T5 one end, vacuum tube the T5 other end, the vacuum tube T6 other end, the vacuum tube T7 other end
It is set to link together with a2 terminations, vacuum tube T7 one end, vacuum tube T8 one end and x11 terminations are set to be connected to one
Rise, vacuum tube the T8 other end, x12 terminations and x2 terminations are set to link together,
Resistance R6 one end, vacuum tube T6 one end and b1 terminations be set to link together and resistance R6 the other end
It is set to be connected with vacuum tube T5 one end, vacuum tube the T5 other end, the vacuum tube T6 other end, the vacuum tube T7 other end
It is set to link together with b2 terminations, vacuum tube T7 one end, vacuum tube T8 one end and y11 terminations are set to be connected to one
Rise, vacuum tube the T8 other end, y12 terminations and y2 terminations are set to link together,
Resistance R7 one end, vacuum tube T6 one end and c1 terminations be set to link together and resistance R7 the other end
It is set to be connected with vacuum tube T5 one end, vacuum tube the T5 other end, the vacuum tube T6 other end, the vacuum tube T7 other end
It is set to link together with c2 terminations, vacuum tube T7 one end, vacuum tube T8 one end and z11 terminations are set to be connected to one
Rise, vacuum tube the T8 other end, z12 terminations and z2 terminations are set to link together, x2 terminations, y2 terminations and z2 terminations are set
To link together.
In the technical program, realize that the load ratio bridging switch body that coil is converted is important skill by the break-make of vacuum tube
Art feature, in the technical field of the load ratio bridging switch based on vacuum tube, with novelty, creative and practicality, at this
Term in technical scheme is all that can be explained and be understood with patent document in the art.
4th, illustrate
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of the load ratio bridging switch of the high pressure conversion of the present utility model for capacitance-adjustable transformer：
Fig. 2 illustrates for the circuit of the load ratio bridging switch of the low pressure serial to parallel conversion of the present utility model for capacitance-adjustable transformer
Figure.
5th, embodiment
According to guidelines for examination, to such as " having ", "comprising" and " comprising " term should used in the utility model
It is interpreted as the presence or addition for not allotting one or more of the other element or its combination.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
As long as in addition, technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can just be combined with each other.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Fig. 1 is one embodiment of the present utility model, and the present embodiment is illustrated with reference to accompanying drawing,
A kind of load ratio bridging switch of high pressure conversion for capacitance-adjustable transformer, includes vacuum tube T1, vacuum tube T2, true
Blank pipe T3, resistance R1, resistance R2 and resistance R3,
A is set to second termination, the C that first termination of three-phase high-voltage end of incoming cables, B are set to three-phase high-voltage end of incoming cables
The 3rd termination of three-phase high-voltage end of incoming cables is set to, first termination, the Y1 that X1 is set to three-phase high voltage coil neutral point are set
The 3rd termination that second termination of three-phase high voltage coil neutral point, Z1 are set to three-phase high voltage coil neutral point is set to, N is set
The termination of three-phase common neutral is set to,
Vacuum tube T1 one end be respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations and vacuum tube T1 it is another
End is set to be connected with N-terminal head, and vacuum tube T2 one end is respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations and true
The blank pipe T2 other end is respectively set to be connected with one end of resistance R1 one end, resistance R2 one end and resistance R3, vacuum tube
T3 one end is respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations, resistance the R1 other end, the vacuum tube T3 other end
It is set to link together with B terminations, resistance the R2 other end, the vacuum tube T3 other end and C-terminal head are set to be connected to one
Rise, resistance the R3 other end, the vacuum tube T3 other end and A terminations are set to link together.
During low capacity, A terminations, B terminations, C-terminal head three-phase star connect, and at this moment vacuum tube T1 is logical, vacuum tube T2 and vacuum tube T3
It is disconnected, during high power capacity, A terminations, B terminations, C-terminal head three-phase corner connection, at this moment vacuum tube T1 is disconnected, vacuum tube T2 is disconnected, vacuum tube T3 leads to,
Conversion process is that vacuum tube realizes control to vacuum tube T1, vacuum tube T2 and vacuum tube T3 by external control system
To realize conversion is not powered off between low capacity state, high-capacity state and high low capacity.Specific steps are shown in Table 1；
Star is connected to corner connection conversion process（By 1-5）, corner connection connects conversion process to star（By 5-1）：
Note：Checked the number in table and represent open-minded, blank represents to disconnect.
A kind of load ratio bridging switch of low pressure serial to parallel conversion for capacitance-adjustable transformer, includes vacuum tube T5, vacuum tube
T6, vacuum tube T7, vacuum tube T8, resistance R5, resistance R6 and resistance R7,
A is set to second termination, the c that first termination of three-phase low-voltage end of incoming cables, b are set to three-phase low-voltage end of incoming cables
The 3rd termination of three-phase low-voltage end of incoming cables is set to, a1 is set to a termination of first group of coil of a phases, x11 and is set to a phases
Another termination of first group of coil, a2 are set to a termination of second group of coil of a phases, x12 and are set to second group of coil of a phases
Another termination, b1 is set to another end that a termination of first group of coil of b phases, y11 are set to first group of coil of b phases
Head, b2 are set to another termination that a termination of second group of coil of b phases, y12 are set to second group of coil of b phases, and c1 is set
Another termination of first group of coil of c phases, c2, which are set to, for a termination of first group of coil of c phases, z11 is set to c phases second
One termination of group coil, z12 are set to another termination of second group of coil of c phases, and it is neutral that x2 is set to three-phase low-voltage coil
Second termination, the z2 that first termination of point, y2 are set to three-phase low-voltage coil neutral point are set in three-phase high voltage coil
3rd termination of property point,
Resistance R5 one end, vacuum tube T6 one end and a1 terminations be set to link together and resistance R5 the other end
It is set to be connected with vacuum tube T5 one end, vacuum tube the T5 other end, the vacuum tube T6 other end, the vacuum tube T7 other end
It is set to link together with a2 terminations, vacuum tube T7 one end, vacuum tube T8 one end and x11 terminations are set to be connected to one
Rise, vacuum tube the T8 other end, x12 terminations and x2 terminations are set to link together,
Resistance R6 one end, vacuum tube T6 one end and b1 terminations be set to link together and resistance R6 the other end
It is set to be connected with vacuum tube T5 one end, vacuum tube the T5 other end, the vacuum tube T6 other end, the vacuum tube T7 other end
It is set to link together with b2 terminations, vacuum tube T7 one end, vacuum tube T8 one end and y11 terminations are set to be connected to one
Rise, vacuum tube the T8 other end, y12 terminations and y2 terminations are set to link together,
Resistance R7 one end, vacuum tube T6 one end and c1 terminations be set to link together and resistance R7 the other end
It is set to be connected with vacuum tube T5 one end, vacuum tube the T5 other end, the vacuum tube T6 other end, the vacuum tube T7 other end
It is set to link together with c2 terminations, vacuum tube T7 one end, vacuum tube T8 one end and z11 terminations are set to be connected to one
Rise, vacuum tube the T8 other end, z12 terminations and z2 terminations are set to link together, x2 terminations, y2 terminations and z2 terminations are set
To link together.
When high pressure is low capacity for wye connection, two groups of coils series connection of low pressure, at this moment vacuum tube T5 is disconnected, vacuum tube T6 is disconnected,
Vacuum tube T7 is logical, vacuum tube T8 breaks, when high pressure is high power capacity when being corner connection connection, two groups of coils from parallel connection of coils of low pressure, at this moment vacuum tube
T5 is disconnected, vacuum tube T6 is logical, vacuum tube T7 is disconnected, vacuum tube T8 leads to.
Conversion process is vacuum tube to vacuum tube T5, vacuum tube T6, vacuum tube T7, vacuum tube T8 by external control system
Realize that control does not power off conversion to realize between low capacity state, high-capacity state and high low capacity.
Being connected in series to parallel inverter process is（1-6）, being parallel to series connection conversion process is（6-1）：
Note：Checked the number in table and represent open-minded, blank represents to disconnect.
In the present embodiment, vacuum tube T1, vacuum tube T2, vacuum tube T3, vacuum tube T5, vacuum tube T6, vacuum tube T7 and
Vacuum tube T8 is respectively set to aaa（Please supplemental content）.
The utility model has lower feature：
1st, due to devising load ratio bridging switch body, the three phase terminals by vacuum tube respectively to high pressure conversion are turned
Change, the coil of each phase of low pressure serial to parallel conversion is changed respectively by vacuum tube, no longer capacitance switch is using direct
Switching, no longer contact burning, therefore improve the margin of safety of load ratio bridging switch.
2nd, due to devising vacuum tube T1, vacuum tube T2, vacuum tube T3, vacuum tube T5, vacuum tube T6, vacuum tube T7 and true
Blank pipe T8, changes between realizing coil by the break-make of vacuum tube, improves the unfailing performance of load ratio bridging switch.
3rd, due to devising resistance R1, resistance R2, resistance R3, resistance R5, resistance R6 and resistance R7, resistance parameter is passed through
Matching, improves the precision of the performance parameter of load ratio bridging switch.
4th, due to devise vacuum tube T5, vacuum tube T6, vacuum tube T7, vacuum tube T8, resistance R5, resistance R6, resistance R7,
Vacuum tube T1, vacuum tube T2, vacuum tube T3, resistance R1, resistance R2 and resistance R3, by vacuum tube and resistance, have simplified load
The structure of shunting switch, improves the matching performance with capacitance-adjustable transformer.
5th, due to devising technical characteristic of the present utility model, the work of set in the independent of technical characteristic and each other
With, by experiment show, property indices of the present utility model for existing property indices be at least 1.7 times, lead to
Crossing assessment has good market value.
It is also other to realize that the load ratio bridging switch body of coil conversion is same or like with the break-make by vacuum tube
As technical characteristic be all one of embodiment of the present utility model, and each technical characteristic of embodiment described above can be carried out
Arbitrary combination, to meet Patent Law, patent regulation and the requirement of guidelines for examination, no longer to each in above-described embodiment
The embodiment of all possible combination of technical characteristic is all described.
Therefore it is every to include with three-phase high-voltage end of incoming cables in the load ratio bridging switch technical field based on vacuum tube
High pressure conversion and three-phase low-voltage end of incoming cables low pressure serial to parallel conversion load ratio bridging switch body, in three-phase high-voltage end of incoming cables
Vacuum tube is provided between the three-phase high-voltage end of incoming cables of the load ratio bridging switch body of high pressure conversion and in three-phase low-voltage inlet wire
It is provided between coil in each phase of the load ratio bridging switch body of the low pressure serial to parallel conversion at end in the technology of vacuum tube
Hold all in protection domain of the present utility model.
Claims (3)
1. a kind of load ratio bridging switch based on vacuum tube, it is characterized in that：Include the high voltage variable with three-phase high-voltage end of incoming cables
Change the load ratio bridging switch body with the low pressure serial to parallel conversion of three-phase low-voltage end of incoming cables, the high pressure conversion in three-phase high-voltage end of incoming cables
Load ratio bridging switch body three-phase high-voltage end of incoming cables between be provided with vacuum tube and in the low pressure of three-phase low-voltage end of incoming cables
Vacuum tube is provided between coil in each phase of the load ratio bridging switch body of serial to parallel conversion.
2. the load ratio bridging switch according to claim 1 based on vacuum tube, it is characterized in that：One kind is used for capacitance-adjustable transformer
High pressure conversion load ratio bridging switch, include vacuum tube T1, vacuum tube T2, vacuum tube T3, resistance R1, resistance R2 and resistance
R3,
A is set to first termination of three-phase high-voltage end of incoming cables, B and is set to second termination of three-phase high-voltage end of incoming cables, C settings
For the 3rd termination of three-phase high-voltage end of incoming cables, first termination, the Y1 that X1 is set to three-phase high voltage coil neutral point are set to
Second termination of three-phase high voltage coil neutral point, Z1 are set to the 3rd termination of three-phase high voltage coil neutral point, and N is set to
The termination of three-phase common neutral,
Vacuum tube T1 one end is respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations and the vacuum tube T1 other end is set
It is set to and is connected with N-terminal head, vacuum tube T2 one end is respectively set to be connected and vacuum tube with X1 terminations, Y1 terminations and Z1 terminations
The T2 other end is respectively set to be connected with one end of resistance R1 one end, resistance R2 one end and resistance R3, vacuum tube T3's
One end is respectively set to be connected with X1 terminations, Y1 terminations and Z1 terminations, the resistance R1 other end, vacuum tube the T3 other end and B
Termination is set to link together, and resistance the R2 other end, the vacuum tube T3 other end and C-terminal head are set to link together,
The resistance R3 other end, the vacuum tube T3 other end and A terminations is set to link together.
3. the load ratio bridging switch according to claim 1 based on vacuum tube, it is characterized in that：One kind is used for capacitance-adjustable transformer
Low pressure serial to parallel conversion load ratio bridging switch, include vacuum tube T5, vacuum tube T6, vacuum tube T7, vacuum tube T8, resistance
R5, resistance R6 and resistance R7,
A is set to first termination of three-phase low-voltage end of incoming cables, b and is set to second termination of three-phase low-voltage end of incoming cables, c settings
For the 3rd termination of three-phase low-voltage end of incoming cables, a1 is set to a termination of first group of coil of a phases, x11 and is set to a phases first
Another termination of group coil, a2 are set to a termination of second group of coil of a phases, x12 and are set to the another of second group of coil of a phases
One termination, b1 be set to a termination of first group of coil of b phases, y11 be set to first group of coil of b phases another termination,
B2 is set to another termination that a termination of second group of coil of b phases, y12 are set to second group of coil of b phases, and c1 is set to c
One termination of first group of coil of phase, z11 are set to another termination of first group of coil of c phases, c2 and are set to second group of line of c phases
One termination of circle, z12 are set to another termination of second group of coil of c phases, and x2 is set to three-phase low-voltage coil neutral point
First termination, y2 are set to second termination of three-phase low-voltage coil neutral point, z2 and are set to three-phase high voltage coil neutral point
The 3rd termination,
Resistance R5 one end, vacuum tube T6 one end and a1 terminations is set to link together and the resistance R5 other end is set
It is connected for one end with vacuum tube T5, vacuum tube the T5 other end, the vacuum tube T6 other end, vacuum tube the T7 other end and a2
Termination is set to link together, and vacuum tube T7 one end, vacuum tube T8 one end and x11 terminations are set to link together,
The vacuum tube T8 other end, x12 terminations and x2 terminations is set to link together,
Resistance R6 one end, vacuum tube T6 one end and b1 terminations is set to link together and the resistance R6 other end is set
It is connected for one end with vacuum tube T5, vacuum tube the T5 other end, the vacuum tube T6 other end, vacuum tube the T7 other end and b2
Termination is set to link together, and vacuum tube T7 one end, vacuum tube T8 one end and y11 terminations are set to link together,
The vacuum tube T8 other end, y12 terminations and y2 terminations is set to link together,
Resistance R7 one end, vacuum tube T6 one end and c1 terminations is set to link together and the resistance R7 other end is set
It is connected for one end with vacuum tube T5, vacuum tube the T5 other end, the vacuum tube T6 other end, vacuum tube the T7 other end and c2
Termination is set to link together, and vacuum tube T7 one end, vacuum tube T8 one end and z11 terminations are set to link together,
The vacuum tube T8 other end, z12 terminations and z2 terminations is set to link together, and x2 terminations, y2 terminations and z2 terminations are set to
Link together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391082.8U CN206460884U (en) | 2016-12-19 | 2016-12-19 | Load ratio bridging switch based on vacuum tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391082.8U CN206460884U (en) | 2016-12-19 | 2016-12-19 | Load ratio bridging switch based on vacuum tube |
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| Publication Number | Publication Date |
|---|---|
| CN206460884U true CN206460884U (en) | 2017-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621391082.8U Expired - Fee Related CN206460884U (en) | 2016-12-19 | 2016-12-19 | Load ratio bridging switch based on vacuum tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085459A (en) * | 2018-12-12 | 2019-08-02 | 浙江腾龙电器有限公司 | A kind of novel loaded capacity-regulated tap switch |
-
2016
- 2016-12-19 CN CN201621391082.8U patent/CN206460884U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085459A (en) * | 2018-12-12 | 2019-08-02 | 浙江腾龙电器有限公司 | A kind of novel loaded capacity-regulated tap switch |
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