CN109585148A - A kind of combined instrument transformer - Google Patents
A kind of combined instrument transformer Download PDFInfo
- Publication number
- CN109585148A CN109585148A CN201811476970.3A CN201811476970A CN109585148A CN 109585148 A CN109585148 A CN 109585148A CN 201811476970 A CN201811476970 A CN 201811476970A CN 109585148 A CN109585148 A CN 109585148A
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- CN
- China
- Prior art keywords
- voltage
- current
- electric current
- mutual induction
- device assembly
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- 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.)
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Classifications
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- 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
- H01F38/34—Combined voltage and current transformers
- H01F38/36—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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/288—Shielding
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention discloses a kind of combined instrument transformers, including pour mass, Current Transformer Assembly and mutual induction of voltage device assembly, pour mass is to be poured the Current Transformer Assembly and mutual induction of voltage device assembly by mixture of epoxy resins, Current Transformer Assembly is in the top of the mutual induction of voltage device assembly, pour mass upper end is provided with binding post, pour mass lower end is provided with secondary wiring terminals, secondary wiring terminals are connect with mutual induction of voltage device assembly, secondary wiring terminals are poured with pour mass and are integrated, secondary wiring terminals are provided for the jack form of the banana plug insertion for secondary cable, a guard column is respectively arranged in the two sides of the jack, the end of the guard column is provided with the elastic piece of an arc recessed inwardly, the present invention is small in size, it is easy for installation, and secondary wiring terminals is easy to connect, securely.
Description
Technical field
The present invention relates to transformer technical fields, in particular to a kind of combined instrument transformer.
Background technique
Electric current and voltage transformer are equipment critically important in electric system, and voltage transformer is mainly used to conversion line
Voltage, and current transformer is primarily used to the voltage and current of conversion line.Electric current and voltage transformer are in addition to can be by line
Electric current not of uniform size and voltage become that insulation blocking can also be played outside the electric current and voltage that a certain size is convenient for measuring on the road
Effect, to guarantee the safety of operator and secondary relevant device.
Combination transformer is by voltage transformer, current transformer combination to mutual inductor together.Combination transformer can incite somebody to action
High voltage variation is low-voltage, and high current is changed as low current, so that the purpose to electrical energy measurement is played, it is in the prior art
Combination transformer mostly uses voltage transformer and current transformer split settings, needs independently installed, not only leads to raw material
At high cost, processing time consuming is laborious, increases processing cost, and erroneous for installation, and occupied space is big, wiring trouble.Therefore, how to mention
For it is a kind of small in size, installation is simple, easy-to-connect combined instrument transformer is those skilled in the art's urgent need to resolve the problem of.
Summary of the invention
In order to overcome various deficiencies in the prior art, the present invention provides a kind of combined instrument transformer, the combined type is mutual
Sensor small volume, installation and wiring are quite convenient to.
To achieve the above object, the invention provides the following technical scheme:
A kind of combined instrument transformer, including pour mass, Current Transformer Assembly and mutual induction of voltage device assembly, the pour mass
It is to be poured the Current Transformer Assembly and mutual induction of voltage device assembly by mixture of epoxy resins, the Current Mutual Inductance
For device assembly in the top of the mutual induction of voltage device assembly, the pour mass upper end is provided with binding post, and the pour mass lower end is set
Secondary wiring terminals are equipped with, the secondary wiring terminals are connect with mutual induction of voltage device assembly, the secondary wiring terminals and casting
Body, which pours, to be integrated；
The Current Transformer Assembly includes current ferric core, the electric current primary coil being set around on the current ferric core and electricity
Secondary coil is flowed, the electric current primary coil is connect by a connection piece with binding post；The mutual induction of voltage device assembly includes electricity
Weight core, the voltage primary coil and voltage secondary coil being set around on the voltage iron core, the voltage primary coil pass through
One high-voltage line is connected with the electric current primary coil；
The secondary wiring terminals are provided for the jack form of the banana plug insertion for secondary cable, in the jack
Two sides be respectively arranged with a guard column, the end of the guard column is provided with the elastic piece of an arc recessed inwardly,
After the current-carrying part of banana plug is inserted into secondary wiring terminals, the elastic piece can just be stuck in banana plug body part
Tail end two sides.
Further, the Current Transformer Assembly and the casting process of mutual induction of voltage device assembly are to be poured under vacuum conditions
Mixture of epoxy resins.
Further, the current ferric core is annular core or rectangle iron core or R shaped iron core, what the current ferric core used
Material is ultramicro-crystal alloy.
Further, the voltage iron core is R shaped iron core, and the material that the R shaped iron core uses is silicon steel sheet.
Further, the electric current primary coil and voltage primary coil outer surface are respectively equipped with first screen layer, the electricity
The electric current secondary coil component that stream secondary coil is integrally formed with the current ferric core, the electric current secondary coil module outer surface
Equipped with secondary shielding layer, the voltage secondary coil component that the voltage secondary coil is integrally formed with the voltage iron core is described
Voltage secondary coil module outer surface is equipped with third shielded layer, and first screen layer, secondary shielding layer and third shielded layer all pass through
It is ground wire grounded, and first screen layer, secondary shielding layer and third shielded layer are all shielding paper.
Further, the guard column is fixed on pour mass by fixed block, and guard column and fixed block are with dismountable
Mode is attached.
Further, insulating protective sleeve is arranged with outside the high-voltage line.
Further, the connector is set as L-type structure.
The beneficial effects of the present invention are:
Current Transformer Assembly and mutual induction of voltage device assembly are cast in together by combined instrument transformer of the invention, are constituted
Electric current and voltage combination transformer, save raw material, facilitate processing, and than original volume-diminished 50% or more,
Installation the space occupied is saved, and secondary wiring terminals are arranged to jack form, and in the setting of jack two sides for solid
The arc elastic piece for determining banana plug effectively prevent secondary cable from mutual inductor to increase the connectivity robustness of banana plug
On fall off.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of secondary wiring terminals of the invention.
In attached drawing: 1- pour mass, 2- Current Transformer Assembly, 21- current ferric core, 22- electric current primary coil, 23- electric current
Secondary coil, 3- mutual induction of voltage device assembly, 31- voltage iron core, 32- voltage primary coil, 33- voltage secondary coil, 4- wiring
Column, 5- secondary wiring terminals, 6- connector, 7- high-voltage line, 8- guard column, 9- fixed block, 10- elastic piece, 11- banana plug.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
As shown in Figure 1, a kind of combined instrument transformer, including pour mass 1, Current Transformer Assembly 2 and voltage transformer group
Part 3, the pour mass 3 are to be poured the Current Transformer Assembly 2 and mutual induction of voltage device assembly 3 by mixture of epoxy resins
It forms, casting process is that casting epoxy resin mixture, interior formed of pour mass 3 accommodate the electric current under vacuum conditions
The cavity and connection Current Transformer Assembly 2 of transformer component 2 and mutual induction of voltage device assembly 3 and mutual induction of voltage device assembly 3
Connecting cavity, in the top of the mutual induction of voltage device assembly 3,1 upper end of pour mass is provided with to be connect the Current Transformer Assembly 2
Terminal 4, the pour mass lower end are provided with secondary wiring terminals 5.
The electric current primary line that 2 component of current transformer includes current ferric core 21, is set around on the current ferric core 21
Circle 22 and electric current secondary coil 23, the electric current primary coil 22 are connect by a connection piece 6 with binding post 4, the connector 6
Be set as L-type structure, avoid electric current primary coil 22 and connecting column 4 direct-connected, connect in this way it is stronger, it is also more square when pouring
Just.The mutual induction of voltage device assembly 3 includes voltage iron core 31,32 and of voltage primary coil being set around on the voltage iron core 31
Voltage secondary coil 33, the voltage primary coil 32 is connected by a high-voltage line 7 with the electric current primary coil 22, described
High-voltage line 7 be set to connecting cavity in, and high-voltage line 7 outside be arranged with insulating protective sleeve, can high-voltage line 7 protected.
The secondary wiring terminals 5 are connect with mutual induction of voltage device assembly 3, and the secondary wiring terminals 5 are poured with pour mass 1
It is integrated, as shown in Fig. 2, the secondary wiring terminals 5 are provided for the jack shape of the banana plug insertion for secondary cable
Formula is respectively arranged with a guard column 8 in the two sides of the jack, and the end of the guard column 8 is provided with inwardly recessed one
The elastic piece 10 of arc, when the current-carrying part of banana plug 11 is inserted into secondary wiring terminals 5, two elastic pieces 10 receive extruding
It moves outward, until when the current-carrying part of banana plug 11 is inserted into jack, since banana plug tail portion is thinner, two elastic pieces
10 reset the tail end two sides that can be just stuck in 11 body part of banana plug.In view of elastic piece 10 holds after prolonged use
It is inadequate that easily there are elastic forces, leads to not the phenomenon that being clamped to banana plug 11, in the present embodiment, the guard column
8 are fixed on pour mass 1 by fixed block 9, and guard column 8 is removably attached with fixed block 9, convenient for more
It changes.
Current Transformer Assembly 2 and mutual induction of voltage device assembly 3 are respectively a set of in the particular embodiment, and connecting column 4 is 2
It is a.Current Transformer Assembly and mutual induction of voltage device assembly are cast in together by combined instrument transformer provided in this embodiment, are constituted
Electric current and voltage combination transformer, save raw material, facilitate processing, and than original volume-diminished 50% with
On, save installation the space occupied.And traditional combined instrument transformer is compared, job stability of the present invention, and without dirt
It contaminates, is non-maintaining.And secondary wiring terminals 5 are arranged to jack form, and be arranged for fixing banana plug in jack two sides
Arc elastic piece effectively prevent secondary cable to fall off from mutual inductor to increase the connectivity robustness of banana plug.
Further, the electric current primary coil 22 of the present embodiment and 32 outer surface of voltage primary coil are respectively equipped with the first screen
Layer is covered, the material of the first screen layer is semiconductive material；The electric current that electric current secondary coil 23 is integrally formed with current ferric core 21
Secondary coil component, electric current secondary coil module outer surface are equipped with secondary shielding layer；Voltage secondary coil 33 and voltage iron core 31
The voltage secondary coil component being integrally formed, voltage secondary coil module outer surface be equipped with third shielded layer, first screen layer,
Secondary shielding layer and third shielded layer all pass through ground wire grounded, and first screen layer, secondary shielding layer and third shielded layer are all
For shielding paper, the structure for needing to shield using shielding paper package.The partial discharge quantity of this combined instrument transformer is reduced in this way, this
The shielding process of invention reduces 60% compared to the partial discharge quantity of existing shielding process, ensure that the performance of combination transformer
Stablize, is reliable.
Further, the current ferric core 21 in the present invention is annular core or rectangle iron core or R shaped iron core, the electric current
For the material that iron core uses for ultramicro-crystal alloy, ultramicro-crystal alloy has more excellent comprehensive mechanical performance than other similar alloys
With mechanical property, superpower stability and dimensional stability, fabulous antifriction quality and good wearability, therefore, this is super
The current ferric core of microcrystallizing alloy can have better mechanical performance, mechanical property, antifriction performance and wear-resisting property.Potential winding
31 be R shaped iron core or ladder shaped iron core, and the material that the voltage iron core uses is 30ZH105 silicon steel sheet, 30ZH105 silicon steel sheet
For the material of high saturation magnetic flux density, and since the effective sectional area of ladder shaped iron core is big, leading for voltage iron core is improved in this way
Magnetic rate, and then the anti-saturation of combination transformer is improved, so that the anti-saturation multiple of combination transformer of the invention is can reach 2.5
Times, i.e., test voltage is 145V, and electric current is less than 1A；The test voltage 110V of comparison with standard, electric current are less than 1A, it more difficult to reach full
With improve the anti-saturation of combination transformer.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of combined instrument transformer, including pour mass, Current Transformer Assembly and mutual induction of voltage device assembly, which is characterized in that
The pour mass is to be poured the Current Transformer Assembly and mutual induction of voltage device assembly by mixture of epoxy resins, institute
Current Transformer Assembly is stated in the top of the mutual induction of voltage device assembly, the pour mass upper end is provided with binding post, described to pour
Injection body lower end is provided with secondary wiring terminals, and the secondary wiring terminals are connect with mutual induction of voltage device assembly, the secondary connection
Terminal is poured with pour mass and is integrated；
The Current Transformer Assembly includes current ferric core, the electric current primary coil being set around on the current ferric core and electric current two
Secondary coil, the electric current primary coil are connect by a connection piece with binding post；The mutual induction of voltage device assembly includes voltage iron
Core, the voltage primary coil and voltage secondary coil being set around on the voltage iron core, the voltage primary coil are high by one
Crimping is connected with the electric current primary coil；
The secondary wiring terminals are provided for the jack form of the banana plug insertion for secondary cable, the two of the jack
Side is respectively arranged with a guard column, and the end of the guard column is provided with the elastic piece of an arc recessed inwardly, works as perfume (or spice)
After the current-carrying part insertion secondary wiring terminals of any of several broadleaf plants plug, the elastic piece can just be stuck in the tail of banana plug body part
Hold two sides.
2. combined instrument transformer according to claim 1, which is characterized in that the Current Transformer Assembly and mutual induction of voltage
The casting process of device assembly is casting epoxy resin mixture under vacuum conditions.
3. combined instrument transformer according to claim 2, which is characterized in that the current ferric core is annular core or square
Shape iron core or R shaped iron core, the material that the current ferric core uses is ultramicro-crystal alloy.
4. combined instrument transformer according to claim 3, which is characterized in that the voltage iron core is R shaped iron core, the R
The material that shaped iron core uses is silicon steel sheet.
5. combined instrument transformer according to claim 4, which is characterized in that the electric current primary coil and voltage primary line
Circle outer surface is respectively equipped with first screen layer, the electric current secondary line that the electric current secondary coil is integrally formed with the current ferric core
Coil assembly, the electric current secondary coil module outer surface are equipped with secondary shielding layer, the voltage secondary coil and the voltage iron
The voltage secondary coil component that core is integrally formed, the voltage secondary coil module outer surface are equipped with third shielded layer, the first screen
Cover layer, secondary shielding layer and third shielded layer all pass through it is ground wire grounded, and first screen layer, secondary shielding layer and third shielding
Layer is all shielding paper.
6. combined instrument transformer according to claim 5, which is characterized in that the guard column is fixed on by fixed block to be poured
In injection body, and guard column is removably attached with fixed block.
7. combined instrument transformer according to claim 6, which is characterized in that be arranged with insulation protection outside the high-voltage line
Set.
8. combined instrument transformer according to claim 7, which is characterized in that the connector is set as L-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476970.3A CN109585148A (en) | 2018-12-05 | 2018-12-05 | A kind of combined instrument transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811476970.3A CN109585148A (en) | 2018-12-05 | 2018-12-05 | A kind of combined instrument transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109585148A true CN109585148A (en) | 2019-04-05 |
Family
ID=65927181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811476970.3A Pending CN109585148A (en) | 2018-12-05 | 2018-12-05 | A kind of combined instrument transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109585148A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551786A (en) * | 2020-05-20 | 2020-08-18 | 费籁电气(上海)有限公司 | Harmonic pollution monitoring device for power grid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110938U (en) * | 2011-06-17 | 2012-01-11 | 浙江华建电气有限公司 | Combined transformer |
| CN106158334A (en) * | 2016-08-30 | 2016-11-23 | 大连和源电器有限公司 | A kind of 35kV cast-type combination transformer |
| CN205862999U (en) * | 2016-07-04 | 2017-01-04 | 成都市兴名源电器有限公司 | A kind of combined current voltage transformer of Y type wiring |
| CN206789414U (en) * | 2017-04-28 | 2017-12-22 | 重庆天泽电器有限公司 | A kind of direct insertion combination transformer |
-
2018
- 2018-12-05 CN CN201811476970.3A patent/CN109585148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202110938U (en) * | 2011-06-17 | 2012-01-11 | 浙江华建电气有限公司 | Combined transformer |
| CN205862999U (en) * | 2016-07-04 | 2017-01-04 | 成都市兴名源电器有限公司 | A kind of combined current voltage transformer of Y type wiring |
| CN106158334A (en) * | 2016-08-30 | 2016-11-23 | 大连和源电器有限公司 | A kind of 35kV cast-type combination transformer |
| CN206789414U (en) * | 2017-04-28 | 2017-12-22 | 重庆天泽电器有限公司 | A kind of direct insertion combination transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551786A (en) * | 2020-05-20 | 2020-08-18 | 费籁电气(上海)有限公司 | Harmonic pollution monitoring device for power grid |
| CN111551786B (en) * | 2020-05-20 | 2022-04-01 | 费籁电气(上海)有限公司 | Harmonic pollution monitoring device for power grid |
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Application publication date: 20190405 |