CN2678083Y - Small current switchover autoconnected streetlight transformer - Google Patents
Small current switchover autoconnected streetlight transformer Download PDFInfo
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- CN2678083Y CN2678083Y CN 200420015654 CN200420015654U CN2678083Y CN 2678083 Y CN2678083 Y CN 2678083Y CN 200420015654 CN200420015654 CN 200420015654 CN 200420015654 U CN200420015654 U CN 200420015654U CN 2678083 Y CN2678083 Y CN 2678083Y
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Abstract
The utility model relates to a small current switchover automatic coupling streetlight transformer, which belongs to the technical field of changeable transformers; the utility model comprises coil input terminals (0, A), output terminals (0, a), an iron core, and a multiple point switchover switch, wherein, one terminal of a winding exiting coil for one time is connected with the input terminal 0, and the other end and other taps (a 1, a 2, a 3) of different turn numbers are respectively connected with the multiple points of the multiple point switchover switch; the other end of the multiple point switchover switch is connected with the coil input terminal A; a voltage reduction coil (A-a) winding with the exiting coil reversely is arranged, one end of the exiting coil is connected with the input terminal (A), and the other end of the coil is connected with the output terminal (a); the connection is in single phase, two phases, or three phases. The utility model has the advantages that high current can be controlled by low current; when output voltage is switched, the flicker can not be produced when streetlights are power down instantly, and sparks can also not be produced when the power is switched; therefore, the reliability of bang-bang control components and the service life of the bang-bang control components can be improved, which is convenient for control; besides, the capacity of the bang-bang control components can be decreased, and the cost can be decreased.
Description
Technical field
The utility model belongs to the variable transformer technical field.
Background technology
General city street lamp is all powered by the power transformer of special use.Because special-purpose power supply electric power is abundant, so street lamp voltage generally all is higher than rated voltage.For the one side electrical energy saving, prolong the useful life of road lamp tube on the other hand, guarantee the safe and reliable operation of street lamp facility, street lamp has all adopted the different Automatic Regulation Control equipment of automaticity, and its core component is the decompression autotransformer that can regulate.The decompression autotransformer that tradition is used is seen shown in Figure 1.One time winding connects input voltage, as 220V; And the tap of the different numbers of turn in winding, actual is the different lead-out terminals of secondary voltage, output is as 205V, 195V, 187V respectively.During actual the use, street lamp begins to start the first step, at first connects 205V by relay system, lamp lighting-up, postpone certain hour after, changing-over is to 195V, postpone certain hour again after, changing-over is to 187V, street lamp is operate as normal under low voltage, realizes electricity-saving function.Use the shortcoming of traditional decompression autotransformer to be, can produce flash of light of street lamp instant power-down and relay during the output voltage changing-over and switch spark, because the electric current that relay is switched is very big, easily cause the relay contact to damage, in case the contact is damaged, street lamp will extinguish immediately.
Summary of the invention
The purpose of this utility model provides a kind of little current switching autocoupling type street-lighting transformer, its advantage is: with the big electric current of little Current Control, can not produce flicker of street lamp instant power-down and relay during the output voltage changing-over and switch spark, and reliability and the life-span that can improve relay controller spare.
Main technical schemes of the present utility model is: a kind of little current switching autocoupling type street-lighting transformer, comprise coil input end, coil output, iron-core coil and multiple spot diverter switch, an end that it is characterized in that a winding magnetizing coil links to each other with input terminal 0, the tap of the other end and other several different numbers of turn links to each other with the multiple spot of multiple spot diverter switch respectively, and the other end of multiple spot diverter switch links to each other with the sub-A of coil input end (or B, C); And be provided with a diminishing coil that oppositely twines with magnetizing coil, this coil one end links to each other with input terminal A (or B, C), the other end links to each other with lead-out terminal a (or b, c), realize once designing winding and be in series with the step-down winding that oppositely twines, the overall coil 0～a after the series connection (or b, c) is as output; Can be single-phase, two-phase or three-phase.
The tap of the above-mentioned different numbers of turn can be 3 (a1, a2, a3), or more than 3.When being 3, when input voltage was 220V, output voltage can be set Va1=205V, Va2=195V, and Va3=187V, each coil has corresponding turn ratio; At this moment, oppositely the step-down winding voltage is respectively 15V, 25V, 33V.
Above-mentioned little current switching autocoupling type street-lighting transformer can be core formula structure or shell-type structure, can be general iron core or Energy-saving iron-core structure etc.
In above-mentioned single-phase core formula structure, circuit structure is the tandem of foregoing circuit structure or parallel, to improve the equilibrium in two post magnetic fields.
Above-mentioned little current switching autocoupling type street-lighting transformer can be a dry construction, also can be the oil immersed type structure.
The utility model has the advantages that: with the big electric current of little Current Control, can not produce flicker of street lamp instant power-down and relay during the output voltage changing-over and switch spark, and can improve the reliability and the life-span of relay controller spare, also can reduce the capacity of relay controller spare, reduce cost.
Be described further below in conjunction with embodiment, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is the street lamp decompression autotransformer electrical schematic diagram that tradition is used.
Fig. 2 is the little current switching autocoupling type of a utility model street-lighting transformer electrical schematic diagram.
Fig. 3 is the single-phase shell-type structural representation of the utility model.
Fig. 4 is that the utility model two coil winding is the single-phase core formula structural representation of series system.
Fig. 5 is that the utility model two coil winding is the single-phase core formula structural representation of parallel way.
Fig. 6 is the utility model three-phase core formula structural representation.
Embodiment
Referring to Fig. 1, be general street lamp decompression autotransformer, 0, A is input terminal, 0, a is lead-out terminal, input voltage is as 220V; The tap of the different numbers of turn in winding, actual is the different lead-out terminals of secondary voltage, exports 205V, 195V, 187V respectively.
Referring to Fig. 2,0, A is input terminal, input voltage is U
10, a is a lead-out terminal, and output voltage is U
2=U
0aA-a is reverse (step-down) coil, and its winding voltage is U
Aa=-U
FIts operation principle is: 0-a1-a2-a3 is the magnetizing coil that transformer once has different number of turn taps (2～4 taps of operated by rotary motion), A-a is reverse (step-down) coil, be its winding around to the 0-a1-a2-a3 winding around opposite to direction, the voltage that two rich total voltages after opposite windings in series are two windings poor, U
2=U
1-U
F, or U
F=U
1-U
2So just constituted the decompression autotransformer of an equivalence, the pass of input, output, the electric current between excitatory is: I
2=I
1+ I
0, or I
0=I
2-I
1N
1, N
2, N
3, N
FBe power, I
0, I
1, I
2, I
3, I
01, I
02, I
03, I
F, I
0iBe electric current, U
F, U
1, U
2, U
0Be voltage.
From above operation principle and formula as can be known:
1) as reverse umber of turn N
FWhen constant, change the number of turn of a field winding, just changed the turn ratio of two series connection windings, promptly changed the voltage difference of two differential concatenation windings, thereby can obtain the output voltage that will obtain.For example, as input U
1If=220V is reverse winding voltage U when the A terminal contacts is connected multiple spot a1, a2, the a3 of multiple spot diverter switch K respectively
FWhen being respectively 15V, 25V, 33V, output voltage U then
2Be respectively 205V, 195V, 187V.
2) can control big electric current with little electric current.For example, input power N
1=22KVA, input voltage U
1=220V, output voltage U
2When being respectively 205V, 195V, 187V, input current I
1=P
1/ U
1=22000/220=100A, output current is respectively I
2=N
1/ U
2=22000/U
2=107A, 113A, 118A, a corresponding exciting curent is respectively I
0=I
2-I
1=I
2-100=7A, 13A, 18A.An exciting curent of being controlled by relay than the secondary output current little many many, and, when secondary voltage switches, because not outage of main circuit, so street lamp does not have the power down scintillation.If still use original relay controller spare, so, use the reliability of road lamp power supply integral device of the present utility model can improve tens times more originally.
Referring to Fig. 3,1 is coil, and 2 is shell type core, and 3 is the winding lead-out wire, the same Fig. 2 of all the other labels.
Referring to Fig. 4,4 is core formula iron core, and 5 is coil I, and 6 is coil II, and 7 is the winding lead-out wire, and all the other labels are the same.
Referring to Fig. 5, the same Fig. 4 of label.
Referring to Fig. 6,8 is tri-phase iron core, 9 is the winding lead-out wire, and A, B, C, are respectively triple line input terminal and lead-out terminal at a, b, c, 10 is the A phase coil, 11 is the B phase coil, and 12 is the C phase coil, a1, a2, a3, b1, b2, b3, c1, c2, c3 are coil tap and switch switching point, the same Fig. 2 of all the other labels.
Claims (6)
1, a kind of little current switching autocoupling type street-lighting transformer, comprise coil input end (0, A), coil output (0, a), iron-core coil and multiple spot diverter switch (A-a1, A-a2, A-a3), an end that it is characterized in that a winding magnetizing coil (0-a1) links to each other with input terminal 0, the tap of the other end and other several different numbers of turn (a1, a2, the a3) multiple spot with the multiple spot diverter switch respectively links to each other, and the other end of multiple spot diverter switch (K) links to each other with the sub-A of coil input end; And be provided with a diminishing coil (A-a) that oppositely twines with magnetizing coil, and this coil one end links to each other with input terminal (A), and the other end links to each other with lead-out terminal (a); Be single-phase, two-phase or three-phase.
2, little current switching autocoupling type street-lighting transformer according to claim 1, the tap that it is characterized in that the different numbers of turn is 3 (a1, a2, a3), when input voltage is 220V, output voltage V a1=205V, Va2=195V, Va3=187V, each coil has corresponding turn ratio.
3, according to claim 1,2 or 3 described little current switching autocoupling type street-lighting transformers, it is characterized in that transformer is core formula structure or shell-type structure, be general core structure or Energy-saving iron-core structure.
4, little current switching autocoupling type street-lighting transformer according to claim 3 is characterized in that in single-phase core formula structure, and circuit structure is the tandem of foregoing circuit structure or parallel.
5, little current switching autocoupling type street-lighting transformer according to claim 3 is characterized in that transformer is dry construction or oil immersed type structure.
6, little current switching autocoupling type street-lighting transformer according to claim 4 is characterized in that transformer is dry construction or oil immersed type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015654 CN2678083Y (en) | 2004-01-16 | 2004-01-16 | Small current switchover autoconnected streetlight transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015654 CN2678083Y (en) | 2004-01-16 | 2004-01-16 | Small current switchover autoconnected streetlight transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2678083Y true CN2678083Y (en) | 2005-02-09 |
Family
ID=34583032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420015654 Expired - Fee Related CN2678083Y (en) | 2004-01-16 | 2004-01-16 | Small current switchover autoconnected streetlight transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2678083Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526257A (en) * | 2015-09-15 | 2017-03-22 | 国网辽宁省电力有限公司沈阳供电公司 | Light three-phase current generator |
| CN106526258A (en) * | 2015-09-15 | 2017-03-22 | 国网辽宁省电力有限公司沈阳供电公司 | Light three-phase voltage generator |
| CN107710100A (en) * | 2015-06-22 | 2018-02-16 | 阿迪尔森·诺盖拉·德·阿劳约 | Voltage regulator stabilizer and tap changer polarity-reversing switch without transition reactor |
-
2004
- 2004-01-16 CN CN 200420015654 patent/CN2678083Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107710100A (en) * | 2015-06-22 | 2018-02-16 | 阿迪尔森·诺盖拉·德·阿劳约 | Voltage regulator stabilizer and tap changer polarity-reversing switch without transition reactor |
| CN106526257A (en) * | 2015-09-15 | 2017-03-22 | 国网辽宁省电力有限公司沈阳供电公司 | Light three-phase current generator |
| CN106526258A (en) * | 2015-09-15 | 2017-03-22 | 国网辽宁省电力有限公司沈阳供电公司 | Light three-phase voltage generator |
| CN106526257B (en) * | 2015-09-15 | 2023-04-28 | 国网辽宁省电力有限公司沈阳供电公司 | Light three-phase current generator |
| CN106526258B (en) * | 2015-09-15 | 2023-06-09 | 国网辽宁省电力有限公司沈阳供电公司 | Light three-phase voltage generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |