CN112331466A - Current transformer with short-circuit module - Google Patents
Current transformer with short-circuit module Download PDFInfo
- Publication number
- CN112331466A CN112331466A CN202011197354.1A CN202011197354A CN112331466A CN 112331466 A CN112331466 A CN 112331466A CN 202011197354 A CN202011197354 A CN 202011197354A CN 112331466 A CN112331466 A CN 112331466A
- Authority
- CN
- China
- Prior art keywords
- loop coil
- short
- open
- protection
- current transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/32—Circuit arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
- H01F2038/305—Constructions with toroidal magnetic core
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a current transformer with a short circuit module, which comprises a mutual inductance assembly, a sampling circuit assembly and a compensation assembly, wherein the mutual inductance assembly comprises a closed iron core, an input circuit coil, a sampling circuit coil, a compensation circuit coil and a sampling compensation part; the protection assembly comprises an open protection loop coil and an open protection piece, wherein the open protection loop coil is connected with the open protection piece through an open protection lead, and an output lead is led out of the open protection loop coil; the open circuit protection piece is connected with the sampling compensation piece through a connecting lead; and a closing signal of the relay is closed by the relay to directly short-circuit the open-circuit protection loop coil to achieve the open-circuit protection effect.
Description
Technical Field
The invention relates to the technical field of fuses, in particular to a current transformer with a short-circuit module.
Background
The major fields of relay protection, automation, electric measuring instruments and the like work in a current secondary circuit, and the current transformer secondary circuit in operation needs to be short-circuited frequently.
The existing commonly used short connection method mainly uses a direct-insertion short connection wire, a short connection fork or a general short connection wire with a screw rod, but the traditional short connection methods have the problems of great potential safety hazard, difficult operation, low efficiency and the like.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.
Therefore, the technical problem to be solved by the invention is that the short connection method in the prior art mainly uses a direct-insertion short connection wire, a short connection fork or a general short connection wire with a screw rod, and the traditional short connection methods have great potential safety hazards, are difficult to operate and have low efficiency.
In order to solve the technical problems, the invention provides the following technical scheme: a current transformer with a short-circuit module comprises,
the mutual inductance assembly comprises a closed iron core, an input loop coil, a sampling loop coil, a compensation loop coil and a sampling compensation part, wherein the sampling loop coil is connected with the sampling compensation part through a sampling lead, the compensation loop coil is connected with the sampling compensation part through a compensation lead, the input loop coil is led out with an input lead,
the protection assembly comprises an open protection loop coil and an open protection piece, wherein the open protection loop coil is connected with the open protection piece through an open protection lead, and an output lead is led out of the open protection loop coil;
the open-circuit protection piece is connected with the sampling compensation piece through a connecting lead.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: the number of turns of the open-circuit protection loop coil is greater than the number of turns of the input loop coil.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: and an insulating barrel is arranged on the inner ring of the closed iron core.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: the open circuit protection piece comprises a protection shell, a relay piece and a wire inserting column, wherein two wire inserting holes are formed in the protection shell, and the wire inserting column is arranged in the wire inserting holes;
the relay is arranged in the protective shell.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: two conductive columns are arranged in the protective shell, and the conductive columns correspond to the wire inserting holes and are electrically connected.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: the relay piece comprises a conductive plate, an electromagnet, a permanent magnet and a first spring, and the end part of the conductive plate is connected with the bottom shaft of the protective shell;
the electromagnet set up in the protective housing bottom, the electromagnet set up in be close to electromagnet department on the current conducting plate, first spring coupling current conducting plate one side and protective housing side.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: the plug wire post is characterized in that a fan-shaped notch is inwards arranged at the end part of the plug wire hole, an arc-shaped section is arranged on the plug wire post, and the size of the fan-shaped notch is larger than that of the arc-shaped section.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: and a containing groove and a guide groove are further arranged in the wire inserting hole, and the size of the guide groove is matched with that of the arc-shaped section.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: the accommodating groove is provided with a plugging ring, and the end part of the plugging ring is provided with a propelling ring;
the size of the plugging ring is matched with that of the accommodating groove, and the size of the pushing ring is matched with that of the guide groove.
As an optimal scheme of the current transformer with the short-circuit module, the invention comprises the following steps: the bottom of the wire inserting hole is also provided with an inner groove, a circular plate is arranged in the inner groove, and the circular plate is connected with the bottom of the inner groove through a second spring.
The invention has the beneficial effects that: according to the current transformer with the short circuit module, the open circuit protection loop coil is additionally arranged on the outer wall of the closed iron core, and the number of turns of the open circuit protection loop coil is far more than that of the input loop coil, so that the current input into the loop coil is small, and once an open circuit state is detected, the sampling and compensating protection device gives an open circuit protection device on the open circuit protection loop coil, namely a closed signal of a relay, the relay is closed, the open circuit protection loop coil is directly short-circuited, and the open circuit protection effect is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
fig. 1 is a schematic diagram of an overall line connection structure of a current transformer with a short-circuit module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an open-circuit protection element in a current transformer with a short-circuit module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a protective shell in a current transformer with a short-circuit module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a relay of a current transformer with a short-circuit module according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a wire insertion hole shown in a current transformer with a short-circuit module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a blocking ring in a current transformer with a short-circuit module according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 6, the present embodiment provides a current transformer with a short-circuit module, including,
the mutual inductance assembly 100 comprises a closed iron core 101, an input loop coil 102, a sampling loop coil 103, a compensation loop coil 104 and a sampling compensation part 105, wherein the sampling loop coil 103 is connected with the sampling compensation part 105 through a sampling lead 106, the compensation loop coil 104 is connected with the sampling compensation part 105 through a compensation lead 107, an input lead 108 is led out from the input loop coil 102,
the protection assembly 200 comprises an open protection loop coil 201 and an open protector 202, wherein the open protection loop coil 201 is connected with the open protector 202 through an open protection lead 203, and an output lead 204 is led out of the open protection loop coil 201;
the open circuit protection 202 is connected to the sampling compensation 105 by a connecting lead 109.
The mutual inductance assembly 100 and the protection assembly 200 are integrally arranged in a shell, and the output lead 204 extends out of the shell.
The number of turns of the open protection loop coil 201 is greater than the number of turns of the input loop coil 102.
The inner ring of the closed iron core 101 is provided with an insulating barrel 101.
In the embodiment, a current transformer with a short-circuit module is provided, which comprises a closed iron core 101, an input loop coil 102 and an input loop coil 103 are respectively wound on the outer wall of the closed iron core 101, the circuit breaker comprises a compensation loop coil 104 and an open circuit protection loop coil 201, wherein input leads 108 are arranged at two ends of the input loop coil 102, sampling leads 106 are arranged at two ends of an input loop coil 103, compensation leads 107 are arranged at two ends of the compensation loop coil 104, open circuit protection leads 203 are arranged at two ends of the open circuit protection loop coil 201, two ends of the sampling leads 106 and the compensation leads 107 are connected with a sampling compensation piece 105 together, two ends of the open circuit protection leads 203 are connected with an open circuit protection piece 202, the open circuit protection piece 202 adopts a relay, the sampling compensation piece 105 and the open circuit protection piece 202 are connected through a connecting lead 109, and output leads 204 are arranged at two ends of the open circuit protection piece 202.
The closed core 101, the sampling compensation member 105 and the open protection member 202 are disposed inside the housing, and the output lead 204 extends to the outside of the housing, which is not shown in the figures because it is a conventional technique, and therefore, it should be known to those skilled in the art, and therefore, they are not described herein in detail.
In the invention, when in use, an open-circuit protection loop coil 201 is additionally arranged on the outer wall of the closed iron core 101, and the number of turns of the open-circuit protection loop coil 201 is far more than that of the input loop coil 102, so that the current input into the loop coil 102 is small, once an open-circuit state is detected, the sampling compensation part 105 provides an open-circuit protection part 202 on the open-circuit protection loop coil 201, namely a closed signal of a relay, to be closed by the relay, the open-circuit protection loop coil 201 is directly short-circuited, the open-circuit protection effect is achieved, the short circuit can be realized by using the self structure, the working efficiency is improved, the potential safety hazard risk is reduced, and the power supply reliability is prompted.
The open circuit protection member 202 comprises a protection shell 202a, a relay member 202b and a wire inserting column 202c, wherein two wire inserting holes 202d are formed in the protection shell 202a, and the wire inserting column 202c is arranged in the wire inserting holes 202 d;
the relay 202b is disposed within the protective housing 202 a.
The two wire insertion holes 202d are coaxially disposed and are disposed on opposite sides of the protective case 202 a.
Two conductive posts 202e are disposed in the protective shell 202a, and the conductive posts 202e and the wire insertion holes 202d are disposed correspondingly and electrically connected.
The relay 202b comprises a conductive plate 202b-1, an electromagnet 202b-2, a permanent magnet 202b-3 and a first spring 202b-4, and the end of the conductive plate 202b-1 is connected with the bottom shaft of the protective shell 202 a;
the electromagnet 202b-2 is arranged at the bottom of the protective shell 202a, the electromagnet 202b-2 is arranged on the conductive plate 202b-1 and close to the electromagnet 202b-2, and the first spring 202b-4 is connected with one side of the conductive plate 202b-1 and the side surface of the protective shell 202 a.
It should be noted that the electromagnet 202b-2 and the permanent magnet 202b-3 are disposed on the same side of the conductive plate 202b-1, the first spring 202b-4 and the conductive post 202e are disposed on the same side of the conductive plate 202b-1, and the first spring 202b-4 and the permanent magnet 202b-3 are located on different sides of the conductive plate 202 b-1.
The conductive plate 202b-1 can rotate along one end connected to the bottom shaft of the protective shell 202a, the two conductive posts 202e are located on the rotation track of the conductive plate 202b-1, and after the conductive plate 202b-1 rotates, the two conductive posts 202e can be electrically connected.
The connecting lead 109 is connected with the electromagnet 202b-2, the sampling compensation part 105 provides a closing signal to the open-circuit protection loop coil 201, the electromagnet 202b-2 electrically attracts the permanent magnet 202b-3 to enable the conductive plate 202b-1 to rotate, the electromagnet 202b-2 and the permanent magnet 202b-3 are attracted together, the first spring 202b-4 is stretched, and the conductive plate 202b-1 is simultaneously contacted with the two conductive columns 202e, so that the two conductive columns 202e are electrically connected.
The plug pin 202c is disposed at the end of the open-circuit protection lead 203, and is connected to two earphones in the two plug holes 202d, that is, to two conductive pins 202e, and the conductive plate 202b-1 is condensed with the two conductive pins 202e, that is, the open-circuit protection loop coil 201 is short-circuited, thereby achieving the open-circuit protection effect.
When the electromagnet 202b-2 loses power, the conductive plate 202b-1 is pulled back to the original position by the first spring 202 b-4.
The end of the wire insertion hole 202d is provided with a sector notch 202d-1 inwards, the wire insertion column 202c is provided with an arc-shaped section 202c-1, and the size of the sector notch 202d-1 is larger than that of the arc-shaped section 202 c-1.
The wire insertion hole 202d is further provided with an accommodating groove 202d-2 and a guide groove 202d-3, and the size of the guide groove 202d-3 is matched with that of the arc-shaped section 202 c-1.
The accommodating groove 202d-2 is provided with a plugging ring 202d-4, and the end part of the plugging ring 202d-4 is provided with a pushing ring 202 d-5;
the plugging ring 202d-4 is sized to fit the receiving groove 202d-2, and the pushing ring 202d-5 is sized to fit the guide groove 202 d-3.
An inner groove 202d-6 is further formed at the bottom of the wire insertion hole 202d, a circular plate 202d-7 is arranged in the inner groove 202d-6, and the circular plate 202d-7 is connected with the bottom of the inner groove 202d-6 through a second spring 202 d-8.
The process of inserting the wire insertion post 202c into the wire insertion hole 202d is to correspond the arc-shaped section 202c-1 to the fan-shaped notch 202d-1, to embed the arc-shaped section 202c-1 into the fan-shaped notch 202d-1 until the arc-shaped section 202c-1 corresponds to the guide groove 202d-3, to rotate the wire insertion post 202c to make the arc-shaped section 202c-1 enter the guide groove 202d-3, and to make the arc-shaped section 202c-1 contact and push the push ring 202d-5, to push the plugging ring 202d-4 out of the accommodating groove 202d-2 to enter the fan-shaped notch 202 d-1.
The plugging ring 202d-4 can plug the fan-shaped notch 202d-1 after the wire inserting column 202c is provided with the wire inserting hole 202d, so as to solve the problem that dust falls into the fan-shaped notch 202 d-1.
The second spring 202d-8 is used to keep the circular plate 202d-7 in contact with the wire insertion post 202c, and after the wire insertion post 202c is inserted into the wire insertion hole 202d, the end of the wire insertion post 202c pushes the circular plate 202d-7 to make the second spring 202 d-8.
Preferably, the arc segment 202c-1, the plugging ring 202d-4 and the pushing ring 202d-5 are butted to form a complete circular ring.
The side surface of the guide groove 202d-3 coincides with the bottom surface of the sector notch 202d-1, so that the arc-shaped section 202c-1 is fitted to the bottom and the arc-shaped section 202c-1 corresponds to the guide groove 202 d-3.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a from current transformer of taking short circuit module which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the mutual inductance assembly (100) comprises a closed iron core (101), an input loop coil (102), a sampling loop coil (103), a compensation loop coil (104) and a sampling compensation part (105), wherein the sampling loop coil (103) is connected with the sampling compensation part (105) through a sampling lead (106), the compensation loop coil (104) is connected with the sampling compensation part (105) through a compensation lead (107), and an input lead (108) is led out of the input loop coil (102),
the protection assembly (200) comprises an open protection loop coil (201) and an open protection piece (202), the open protection loop coil (201) is connected with the open protection piece (202) through an open protection lead (203), and an output lead (204) is led out of the open protection loop coil (201);
the open circuit protection (202) is connected to the sampling compensation (105) by a connecting lead (109).
2. The current transformer with the short-circuit module as claimed in claim 1, wherein: the number of turns of the open protection loop coil (201) is greater than the number of turns of the input loop coil (102).
3. The current transformer with the short-circuit module as claimed in claim 1 or 2, wherein: and an insulating barrel (101) is arranged on the inner ring of the closed iron core (101).
4. The current transformer with the short-circuit module as claimed in claim 3, wherein: the open circuit protection piece (202) comprises a protection shell (202a), a relay piece (202b) and a wire inserting column (202c), wherein two wire inserting holes (202d) are formed in the protection shell (202a), and the wire inserting column (202c) is arranged in the wire inserting holes (202 d);
the relay (202b) is disposed within the protective shell (202 a).
5. The current transformer with the short-circuit module as claimed in claim 4, wherein: two conductive columns (202e) are arranged in the protective shell (202a), and the conductive columns (202e) are arranged corresponding to the wire insertion holes (202d) and are electrically connected.
6. The current transformer with the short-circuit module as claimed in claim 5, wherein: the relay piece (202b) comprises a conductive plate (202b-1), an electromagnet (202b-2), a permanent magnet (202b-3) and a first spring (202b-4), and the end part of the conductive plate (202b-1) is connected with the bottom shaft of the protective shell (202 a);
the electromagnet (202b-2) is arranged at the bottom of the protective shell (202a), the electromagnet (202b-2) is arranged on the conductive plate (202b-1) and close to the electromagnet (202b-2), and the first spring (202b-4) is connected with one side of the conductive plate (202b-1) and the side face of the protective shell (202 a).
7. The current transformer with the short-circuit module as claimed in any one of claims 4 to 6, wherein: the plug wire post is characterized in that a fan-shaped notch (202d-1) is formed in the end portion of the plug wire hole (202d) inwards, an arc-shaped section (202c-1) is arranged on the plug wire post (202c), and the size of the fan-shaped notch (202d-1) is larger than that of the arc-shaped section (202 c-1).
8. The current transformer with the short-circuit module as claimed in claim 7, wherein: an accommodating groove (202d-2) and a guide groove (202d-3) are further formed in the wire inserting hole (202d), and the size of the guide groove (202d-3) is matched with that of the arc-shaped section (202 c-1).
9. The current transformer with the short-circuit module as claimed in claim 8, wherein: the containing groove (202d-2) is provided with a plugging ring (202d-4), and the end part of the plugging ring (202d-4) is provided with a pushing ring (202 d-5);
the size of the plugging ring (202d-4) is matched with that of the accommodating groove (202d-2), and the size of the pushing ring (202d-5) is matched with that of the guide groove (202 d-3).
10. The current transformer with the short-circuit module as claimed in claim 8 or 9, wherein: an inner groove (202d-6) is further arranged at the bottom of the wire inserting hole (202d), a circular plate (202d-7) is arranged in the inner groove (202d-6), and the circular plate (202d-7) is connected with the bottom of the inner groove (202d-6) through a second spring (202 d-8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197354.1A CN112331466B (en) | 2020-10-31 | 2020-10-31 | Current transformer with short-circuit module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197354.1A CN112331466B (en) | 2020-10-31 | 2020-10-31 | Current transformer with short-circuit module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112331466A true CN112331466A (en) | 2021-02-05 |
| CN112331466B CN112331466B (en) | 2021-08-24 |
Family
ID=74323759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011197354.1A Active CN112331466B (en) | 2020-10-31 | 2020-10-31 | Current transformer with short-circuit module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112331466B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203882902U (en) * | 2014-04-28 | 2014-10-15 | 宁波金越电器有限公司 | Normally open relay |
| CN207925288U (en) * | 2017-10-20 | 2018-09-28 | 海盐星创电子有限公司 | A kind of quick response from short circuit current mutual inductor |
| CN209087721U (en) * | 2018-11-21 | 2019-07-09 | 深圳巴斯巴汽车电子有限公司 | A kind of new structural high voltage direct current relay |
| CN209929233U (en) * | 2019-06-20 | 2020-01-10 | 无锡市飞沪科技有限公司 | Mobile power relay |
| CN210225063U (en) * | 2019-09-26 | 2020-03-31 | 安徽锦星信息技术有限公司 | Relay control system based on remote monitoring |
-
2020
- 2020-10-31 CN CN202011197354.1A patent/CN112331466B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203882902U (en) * | 2014-04-28 | 2014-10-15 | 宁波金越电器有限公司 | Normally open relay |
| CN207925288U (en) * | 2017-10-20 | 2018-09-28 | 海盐星创电子有限公司 | A kind of quick response from short circuit current mutual inductor |
| CN209087721U (en) * | 2018-11-21 | 2019-07-09 | 深圳巴斯巴汽车电子有限公司 | A kind of new structural high voltage direct current relay |
| CN209929233U (en) * | 2019-06-20 | 2020-01-10 | 无锡市飞沪科技有限公司 | Mobile power relay |
| CN210225063U (en) * | 2019-09-26 | 2020-03-31 | 安徽锦星信息技术有限公司 | Relay control system based on remote monitoring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112331466B (en) | 2021-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111551763B (en) | Electric energy meter case plug socket and plug-in mechanism thereof | |
| CN112331466B (en) | Current transformer with short-circuit module | |
| CN103219602A (en) | Five-hole power socket | |
| CN206685610U (en) | A kind of magnetic connector and compound magnetic connector | |
| CN210074375U (en) | Temporary short circuit tool suitable for transformer substation protection device | |
| CN209434012U (en) | A kind of anti-interference transformer | |
| CN203365518U (en) | Electronic mutual inductor with grooved iron core coil and resistance divider combination | |
| CN217239197U (en) | Clamp-on current transformer capable of improving wiring reliability | |
| CN201898226U (en) | Female terminal of connector and waterproof connector | |
| KR100262284B1 (en) | Method of producing a transformer | |
| CN218482148U (en) | Integrated solid-sealed polar pole | |
| CN219833169U (en) | Socket type annular transformer | |
| CN215418044U (en) | Leakage protection module of automatic reclosing leakage protection circuit breaker | |
| CN215680567U (en) | Automatic reclosing leakage protection circuit breaker with metering function | |
| CN220122214U (en) | Reverse locking type safety plug | |
| CN211826319U (en) | Insulation detection device | |
| CN220138232U (en) | Small-size electric leakage tripping structure | |
| CN209460287U (en) | A kind of transformer core semi-finished product experimental rig | |
| CN211318509U (en) | Novel-structure current sampling printed circuit board | |
| CN211238702U (en) | Double-groove type communication electronic precision connector | |
| CN216624116U (en) | Totally-enclosed insulation relay protection small bus terminal | |
| CN210692309U (en) | Current transformer for switching power supply | |
| CN209358025U (en) | A kind of secure connection plug | |
| CN213583333U (en) | Current transformer for measurement | |
| CN204255986U (en) | With the socket of hot-swappable formula intelligent electric meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |