CN207183176U - A kind of breaker with transformer disconnection defencive function - Google Patents
A kind of breaker with transformer disconnection defencive function Download PDFInfo
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- CN207183176U CN207183176U CN201721096961.2U CN201721096961U CN207183176U CN 207183176 U CN207183176 U CN 207183176U CN 201721096961 U CN201721096961 U CN 201721096961U CN 207183176 U CN207183176 U CN 207183176U
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- circuit
- relay device
- branch road
- opening relay
- transformer
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- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
It the utility model is related to a kind of breaker with transformer disconnection defencive function.It is connected after each current transformer parallel connection with inrush current control, inrush current control is connected with tripping coil, connects the anti-open circuit branch road of big impedance between the earth terminal and leading-out terminal of each current transformer respectively.When the leading-out terminal of current transformer disconnects; caused overvoltage produces overcurrent in the anti-open circuit branch road of big impedance; overcurrent is detected by the first circuit opening relay device; the signal detected is sent to inrush current control; because overcurrent strength is big; and start tripping coil, electrical equipment way circuit is disconnected, circuit is played a protective role.
Description
Technical field
It the utility model is related to breaker technical field, more particularly to a kind of open circuit with transformer disconnection defencive function
Device.
Background technology
The leading-out terminal of the current transformer of breaker is in the process of running if off moment produced electricity in circuit for meeting
Pressure, overvoltage jeopardize equipment safety, easily cause equipment burnout.
Utility model content
The purpose of this utility model is to solve the above problems, there is provided a kind of open circuit with transformer disconnection defencive function
Device.
In order to solve the above problems, the technical solution adopted in the utility model is as follows：
The utility model provides a kind of breaker with transformer disconnection defencive function, including current transformer in parallel
1st, inrush current control 2, tripping coil 3, it is connected after the parallel connection of earth terminal 11 of each current transformer with inrush current control 2, each electric current
The leading-out terminal 12 of transformer is connected with inrush current control 2 respectively, and inrush current control 2 is connected with tripping coil 3, it is characterised in that
The anti-open circuit branch road 4 of big impedance is connected between the earth terminal 11 and leading-out terminal 12 of each current transformer respectively；
The anti-open circuit branch road 4 of big impedance of each current transformer is in parallel, and the big anti-open circuit branch road of impedance includes the diode of series connection
With resistance 5, the first circuit opening relay device 6.
Further, the diode of each anti-open circuit branch road of big impedance and resistance 5 are connected, and the two of major anti-open circuit branch road of impedance
Connected again with the first circuit opening relay device 6 after pole pipe and the parallel connection of resistance 5.
Further, the second circuit opening relay device 7 of the rear portion of the first circuit opening relay device 6 connection, the coil 61 of the first circuit opening relay device,
The switch contact 62 of first circuit opening relay device is connected with the coil 71 of the second circuit opening relay device, and the switch of the second circuit opening relay device touches
Point 72 is connected with after the parallel connection of auxiliary switch contact 81 of opening circuit with the coil 82 of opening circuit.
The beneficial effects of the utility model are：
When the leading-out terminal of current transformer disconnects, caused overvoltage produces overcurrent in the anti-open circuit branch road 4 of big impedance,
Overcurrent is detected by the first circuit opening relay device, and the signal detected is sent to inrush current control, and then inrush current control is according to connecing
The size of signal is received to start tripping coil 3, electrical equipment way circuit is disconnected, circuit is played a protective role.
Brief description of the drawings
, 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 required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the 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 a kind of breaking protection part connection figure of breaker with transformer disconnection defencive function of the utility model；
Fig. 2 is a kind of breaking protection partial circuit diagram of the breaker with transformer disconnection defencive function of the utility model；
Description of reference numerals：Current transformer -1, earth terminal -11, leading-out terminal -12, inrush current control -2, tripping coil -
3rd, the anti-open circuit branch road -4 of big impedance, diode and resistance -5, the first circuit opening relay device -6, the first circuit opening relay device coil -61,
The switch contact -62 of first circuit opening relay device, the second circuit opening relay device -7, the coil -71 of the second circuit opening relay device, the second open circuit
The switch contact -72 of relay, the auxiliary switch contact -81 of opening circuit, the coil -82 of opening circuit；
Energy storage branch road -01, combined floodgate branch road -02, separating brake branch road -03, power-off protection branch road -04.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to be made to the scope of protection of the utility model
Define.
As shown in Figure of description 1, a kind of breaker with transformer disconnection defencive function, including Current Mutual Inductance in parallel
Device 1, inrush current control 2, tripping coil 3, it is connected after the parallel connection of earth terminal 11 of each current transformer with inrush current control 2, each electricity
The leading-out terminal 12 of current transformer is connected with inrush current control 2 respectively, and inrush current control 2 is connected with tripping coil 3, and its feature exists
In, connected respectively between the earth terminal 11 and leading-out terminal 12 of each current transformer big impedance it is anti-open circuit branch road 4；
The anti-open circuit branch road 4 of big impedance of each current transformer is in parallel, and the big anti-open circuit branch road of impedance includes the diode of series connection
With resistance 5, the first circuit opening relay device 6.
Further, the diode of each anti-open circuit branch road of big impedance and resistance 5 are connected, and the two of major anti-open circuit branch road of impedance
Connected again with the first circuit opening relay device 6 after pole pipe and the parallel connection of resistance 5.
As shown in Figure of description 2, including energy storage branch road 01, combined floodgate branch road 02, separating brake branch road 03, power-off protection branch road
04, further, the rear portion of the first circuit opening relay device 6 connects the second circuit opening relay device 7, the coil 61, first of the first circuit opening relay device
The switch contact 62 of circuit opening relay device is connected with the coil 71 of the second circuit opening relay device, the switch contact 72 of the second circuit opening relay device
Connected with the coil 82 after the parallel connection of auxiliary switch contact 81 of opening circuit with opening circuit.Under normality, the auxiliary of opening circuit
Switch contact 81 disconnects, and when the leading-out terminal of current transformer disconnects, caused overvoltage produces in the anti-open circuit branch road 4 of big impedance
Overcurrent, overcurrent are closed by the coil 61 of the first circuit opening relay device, the switch contact 62 of the first circuit opening relay device, overcurrent
By the coil 71 of the second circuit opening relay device, the switch contact 72 of the second circuit opening relay device closes, and the coil 82 of opening circuit is logical
Start tripping coil 3 after electricity, disconnect electrical equipment way circuit.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, retouching in above-described embodiment and specification
Preference only of the present utility model is stated, the utility model is not limited by above-mentioned preference, is not departing from the utility model
On the premise of spirit and scope, the utility model can also have various changes and modifications, and these changes and improvements both fall within this practicality
In new claimed scope.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of breaker with transformer disconnection defencive function, including current transformer in parallel（1）, inrush current control（2）、
Tripping coil（3）, the earth terminal of each current transformer（11）After parallel connection with inrush current control（2）Connection, each current transformer
Leading-out terminal（12）Respectively with inrush current control（2）Connection, inrush current control（2）With tripping coil（3）Connection, it is characterised in that
The earth terminal of each current transformer（11）And leading-out terminal（12）Between connect the anti-open circuit branch road of big impedance respectively（4）；
The anti-open circuit branch road of big impedance of each current transformer（4）Parallel connection, the anti-open circuit branch road of big impedance include series connection diode and
Resistance（5）, the first circuit opening relay device（6）.
A kind of 2. breaker with transformer disconnection defencive function according to claim 1, it is characterised in that each big resistance
The diode and resistance of anti-anti- open circuit branch road（5）Series connection, the diode and resistance of major anti-open circuit branch road of impedance（5）After parallel connection again
With the first circuit opening relay device（6）Series connection.
A kind of 3. breaker with transformer disconnection defencive function according to claim 1, it is characterised in that the first open circuit
Relay（6）Rear portion connects the second circuit opening relay device（7）, the coil of the first circuit opening relay device（61）, the first circuit opening relay device
Switch contact（62）With the coil of the second circuit opening relay device（71）Series connection, the switch contact of the second circuit opening relay device（72）With separating brake
The auxiliary switch contact of circuit（81）After parallel connection with the coil of opening circuit（82）Series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721096961.2U CN207183176U (en) | 2017-08-30 | 2017-08-30 | A kind of breaker with transformer disconnection defencive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721096961.2U CN207183176U (en) | 2017-08-30 | 2017-08-30 | A kind of breaker with transformer disconnection defencive function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207183176U true CN207183176U (en) | 2018-04-03 |
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ID=61739429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721096961.2U Active CN207183176U (en) | 2017-08-30 | 2017-08-30 | A kind of breaker with transformer disconnection defencive function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207183176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197780A (en) * | 2019-06-05 | 2019-09-03 | 厦门立林电气控制技术有限公司 | A kind of trip coil broken string monitoring circuit |
-
2017
- 2017-08-30 CN CN201721096961.2U patent/CN207183176U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197780A (en) * | 2019-06-05 | 2019-09-03 | 厦门立林电气控制技术有限公司 | A kind of trip coil broken string monitoring circuit |
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