CN201036161Y - Three-phase pouring type combined transformer - Google Patents
Three-phase pouring type combined transformer Download PDFInfo
- Publication number
- CN201036161Y CN201036161Y CNU2007200102481U CN200720010248U CN201036161Y CN 201036161 Y CN201036161 Y CN 201036161Y CN U2007200102481 U CNU2007200102481 U CN U2007200102481U CN 200720010248 U CN200720010248 U CN 200720010248U CN 201036161 Y CN201036161 Y CN 201036161Y
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Abstract
The utility model relates to a three-phase casting combined mutual inductor, consisting of a voltage transformator loop, a current transformator loop and a terminal box of a secondary connection. The utility model has the technic proposal that the wire-connecting terminals of the voltage transformator loop and the current transformator loop are connected to form a three-phase voltage transformator and a three-phase current transformator, and then an epoxide resin shell is vacuumly cast outside the three-phase voltage transformator and the three-phase current transformator respectively and an integrated three-phase mutual inductor is thus formed. A high-temperature silicon rubber jacket is arranged outside the epoxide resin shell. The output terminals of the voltage transformator loop and the current transformator loop are respectively led out and arranged on the upper end of the epoxide resin shell. The terminal box of the secondary connection is arranged on one side of the epoxide resin shell and the post heads of the terminal box of the secondary connection are respectively connected with the output terminals of the voltage transformator loop and the current transformator loop inside the shell. The utility model reduces the incidence rate of malfunctions immensely and is safe and reliable. The utility model adopts a combined structure, and the outer high-temperature silicon rubber jacket has the advantages of softness, corrosion resistance, aging resistance and cleaning-free, solves the crazing problem happening to an outdoor mutual inductor and prolongs the service life of a mutual inductor.
Description
Technical field
The utility model relates to a kind of three-phase instrument transformer, particularly a kind of three-phase instrument transformer that is poured into one.
Background technology
Operate at present that outdoor three-phase combination transformer on the 10KV electrical network is most of to be adopted two current transformers and two voltage transformers to be fixed on the base frame to assemble.Its shortcoming is: thus 1. many initiating failures of aerial lug point; 2. big, the Heavy Weight of volume is less than two people inconvenience and installs and change; 3. instrument transformer secondary connection point is many, can't realize anti-electricity-theft.
Also having a few part is to adopt the three-phase combination transformer of outdoor epoxy resin integral cast, but the outdoor mutual inductor of outdoor poured with epoxy resin easily chaps, and influences useful life.
Summary of the invention
Goal of the invention: the utility model provides a kind of three-phase cast-type combination transformer, and its purpose is to solve existing instrument transformer for dividing body structure, be inconvenient to install and changes, and can not be anti-electricity-theft, the problem of aspect existence such as weak point in useful life.
Technical scheme: the utility model is achieved through the following technical solutions:
A kind of three-phase cast-type combination transformer, this instrument transformer comprises voltage transformer coil, current mutual inductor coil, secondary connection terminal board; It is characterized in that: it is that circuit connection terminal with voltage transformer coil summation current transformer coil connects into voltage in three phases, current transformer, the integral type three-phase instrument transformer that behind their outside vacuum pouring epoxy packages, forms, the outside of epoxy package is provided with the high temperature silicon rubber sheath, voltage, the input terminal of current mutual inductor coil is drawn respectively and is arranged on the epoxy package upper end, the secondary connection terminal board is located at a side of epoxy package, each binding post of secondary connection terminal board respectively with shell in voltage, the lead-out terminal of current mutual inductor coil connects.
Voltage transformer coil and current mutual inductor coil respectively are two, and their circuit connection terminal connects into voltage, the current transformer of three-phase three-wire system.
Advantage and effect: by the enforcement of technical solutions of the utility model, can solve existing instrument transformer well, be inconvenient to install and change, and can not be anti-electricity-theft, the problem of aspect existence such as weak point in useful life for dividing body structure.
The utility model equipment is outdoor electric current, the voltage changer on a kind of 10KV of may operate in electrical network, also is the main corollary equipment of high-voltage electric energy measurement cabinet.Owing to respectively two electric currents, voltage transformer coil groups are contained in the integral body, make that the volume of the integral transformer after forming reduces greatly, weight also alleviates greatly, install and change very convenient.Because its secondary lead-out wire adopts cable to be connected to the secondary connection terminal board, outlet can add seal, has effectively prevented stealing again.Circuit between each mutual inductor coil connects all in vacuum pouring epoxy package inside simultaneously, and is so the utility model equipment also reduces rate of breakdown greatly, more safe and reliable.Owing to adopted composite structure, the skin of equipment high temperature silicon rubber sheath since high temperature silicon rubber have softness, corrosion-resistant, anti-aging, exempt from characteristics such as cleanings, also solved outdoor mutual inductor the problem that chaps taken place, prolonged the useful life of instrument transformer.
Description of drawings
Fig. 1 is the main surface structure schematic diagram of the utility model;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the connection diagram of the utility model voltage, current mutual inductor coil;
Fig. 5 is the structural representation of the utility model high temperature silicon rubber sheath;
Fig. 6 is the end view of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail as follows.
Embodiment 1:
Shown in accompanying drawing 1,2, this practicality newly is a kind of three-phase cast-type combination transformer, and this instrument transformer comprises voltage transformer coil 8, current mutual inductor coil 5, secondary connection terminal board 3; It is that circuit connection terminal with voltage transformer coil 8 summation current transformer coils 5 connects into voltage in three phases, current transformer, the integral type three-phase instrument transformer that forms in their outside vacuum pouring epoxy package 1 backs, the outside of epoxy package 1 is provided with high temperature silicon rubber sheath 4, voltage, current mutual inductor coil 8,5 input terminal is drawn respectively and is arranged on epoxy package 1 upper end, secondary connection terminal board 3 is located at a side of epoxy package 1, each binding post of secondary connection terminal board 3 respectively with shell in voltage, current mutual inductor coil 8,5 lead-out terminal connects.
As shown in Figure 3, voltage transformer coil 8 respectively is two with current mutual inductor coil 5, and their circuit connection terminal connects into voltage, the current transformer of the three-phase three-wire system of an integral body.
Characteristics of the present utility model are at the frame mode that forms 10KV outdoor three-phase combination transformer: 1. It is separately fixed at error modulated qualified two current mutual inductor coils and two voltage transformer coils Carry out the connection of internal circuit on the casting mold, carry out epoxide resin vacuum after being connected into the three-phase three-wire system transformer Cast, after cured, the high temperature silicon rubber sheath that has made on bonding; 2. use extraordinary at secondary outgoing line mouth place The cable outconnector is connected on the electric power meter, adds seal at secondary outgoing line mouth place then, and is real The purpose of existing anti-deenergizing.
Claims (2)
1. three-phase cast-type combination transformer, this instrument transformer comprises voltage transformer coil (8), current mutual inductor coil (5), secondary connection terminal board (3); It is characterized in that: it is that circuit connection terminal with voltage transformer coil (8) summation current transformer coil (5) connects into voltage in three phases, current transformer, the integral type three-phase instrument transformer that forms in their outside vacuum pouring epoxy package (1) backs, the outside of epoxy package (1) is provided with high temperature silicon rubber sheath (4), voltage, current mutual inductor coil (8,5) input terminal is drawn respectively and is arranged on epoxy package (1) upper end, secondary connection terminal board (3) is located at a side of epoxy package (1), each binding post of secondary connection terminal board (3) respectively with shell in voltage, current mutual inductor coil (8,5) lead-out terminal connects.
2. three-phase cast-type combination transformer according to claim 1 is characterized in that: voltage transformer coil (8) respectively is two with current mutual inductor coil (5), and their circuit connection terminal connects into voltage, the current transformer of three-phase three-wire system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200102481U CN201036161Y (en) | 2007-01-22 | 2007-01-22 | Three-phase pouring type combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200102481U CN201036161Y (en) | 2007-01-22 | 2007-01-22 | Three-phase pouring type combined transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201036161Y true CN201036161Y (en) | 2008-03-12 |
Family
ID=39197050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200102481U Expired - Fee Related CN201036161Y (en) | 2007-01-22 | 2007-01-22 | Three-phase pouring type combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201036161Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733157A (en) * | 2015-03-30 | 2015-06-24 | 国家电网公司 | Simple installation structure of current transformer of transformer and installation method thereof |
| CN104950150A (en) * | 2015-07-03 | 2015-09-30 | 朗亿德电气股份有限公司 | Integrated sensor of high-voltage electric energy meter |
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
-
2007
- 2007-01-22 CN CNU2007200102481U patent/CN201036161Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733157A (en) * | 2015-03-30 | 2015-06-24 | 国家电网公司 | Simple installation structure of current transformer of transformer and installation method thereof |
| CN104950150A (en) * | 2015-07-03 | 2015-09-30 | 朗亿德电气股份有限公司 | Integrated sensor of high-voltage electric energy meter |
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
| CN108962574B (en) * | 2018-06-04 | 2023-10-03 | 湖北大二互科技股份有限公司 | Modular combined transformer for metering |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
| CN109360712B (en) * | 2018-11-27 | 2023-10-17 | 保定天威互感器有限公司 | External current transformer for transformer and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20130122 |