CN204857434U - Mutual -inductor - Google Patents
Mutual -inductor Download PDFInfo
- Publication number
- CN204857434U CN204857434U CN201520588235.7U CN201520588235U CN204857434U CN 204857434 U CN204857434 U CN 204857434U CN 201520588235 U CN201520588235 U CN 201520588235U CN 204857434 U CN204857434 U CN 204857434U
- Authority
- CN
- China
- Prior art keywords
- casing
- punching
- inductor
- housing
- phase
- 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.)
- Expired - Fee Related
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model discloses a mutual -inductor, assemble in integrated into one piece's punching casing including three single -phase mutual -inductor equal suit concatenates a second grade signalling current mutual -inductor on three single -phase mutual -inductor's the secondary output, and this second grade signalling current mutual -inductor's output is drawn forth through the line outlet. The punching casing include that first minute casing and second divide the casing, the casing was used for the three copper bar of punching installation in first minute, this minute casing has three punching hole for pass the copper bar, the second divides the casing to have three kong zhu, is used for installing three coil, and two branch casing shapes correspond, make three copper bar just in time pass three coil. Second grade signalling current mutual -inductor's output has 5A30mA or two kinds of specifications of 1A30mA. Shockproof sponge has in the punching casing. The punching casing is plastics.
Description
Technical field
The utility model belongs to technical field of electrical measurement, particularly a kind of instrument transformer.
Background technology
Instrument transformer is common device in power measurement system.In Chinese patent application CN02274488.6 file, disclose a kind of combined mutual inductor for metering, comprise voltage transformer summation current transformer, it is characterized in that the single-phase voltage of absolute construction, current transformer, the bottom of its pour mass is with downward opening groove, and the secondary wiring terminals be arranged on bottom pour mass is positioned at groove, and is connected with outgoing cable, be cast with in groove for the silicon rubber by secondary terminals and cable sealing, instrument transformer is assembled on base.The single-phase transformers of absolute construction fits together by this patent, in the groove bottom the overall sealing pour mass of its secondary wiring terminals.
Again, in Chinese patent application CN201320673575.0, disclose electric power system high-pressure measurement mechanism, specifically the split type combination transformer of a kind of outdoor three-phase.Comprise A phase current mutual inductor, C phase current mutual inductor, A phase voltage instrument transformer and C phase voltage instrument transformer, described A phase current mutual inductor, C phase current mutual inductor, A phase voltage instrument transformer and C phase voltage instrument transformer are single-phase transformers, and its secondary terminals causes in secondary terminal box jointly; Described four instrument transformers are also installed on grooved base with secondary terminal box.
Visible, in the prior art, do not provide cost lower, three-phase instrument transformer scheme easy for installation.
Utility model content
The utility model provides a kind of instrument transformer, achieves a kind of Integral three-phase instrument transformer scheme.
The technical solution of the utility model is a kind of instrument transformer, comprise in punching housing that three single-phase transformers are assembled into one shaping, the secondary output of described three single-phase transformers is all set with serial connection second signal current transformer, and the output of this second signal current transformer is drawn by line outlet.
Described punching housing comprises the first housing parts and the second housing parts, and the first housing parts is used for punching and installs three copper bars, and this housing parts has three center holes, for passing copper bar,
Second housing parts has three Kong Zhu, and for installing three coils, two housing parts shapes are corresponding, make three copper bars right through three coils.
The output of described second signal current transformer has 5A/30mA or 1A/30mA two kinds of specifications.
In described punching housing, there is shockproof sponge.Described punching housing is plastics.
Former three single-phase, punchings are moulded shell instrument transformer and are now connected by the utility model, conveniently to install, transport, and appearance looks elegant is generous.Between shell dimension design three-phase of the present utility model, distance can hold iron core and the coil of 100-1000A primary current secondary current 5A and 1A in opposite directions, and leave second signal instrument transformer and integrated circuit Board position, one time copper bar is fixed on an input and output housing, be convenient to user installation, separately stay two kinds of current ratios (two no-load voltage ratio) so that client's dilatation uses.
Three-phase integrated instrument transformer of the present utility model meets GB1208-2006 current technique standard; in the electric power system of rated primary current ratio, make three-phase current voltage resistance measure and relaying protection effect; precision 0.5,0.5S, 0.2,0.2S; grade specification 100-1000A:5A or 1A; and at secondary output serial connection 5A/30mA or 1A/30mA second signal current transformer; directly flow to computer, do intelligent monitoring effect, mutual inductor interstar connection explanation is shown in the concrete mode of connection and operation.A three-phase integrated busbar draws every phase voltage, can detect three-phase operation situation.In every phase housing, instrument transformer has shockproof sponge, and can prevent transport vibrations and operating numerical value change, the former data variation of product test is very little.The precision of instrument transformer meets GB design, and when rated primary current runs 150%, iron core is unsaturated, meets required precision.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present utility model.
Fig. 2 is the vertical view of members in the utility model embodiment.
Fig. 3 is the front view of members in the utility model embodiment.
Wherein, 1---second signal current transformer, 2---copper bar, 3---center hole, 4---housing, 5---line outlet.
Embodiment
As shown in Figure 1, the input of one-level instrument transformer of the present utility model is A, B, C, and the output of second signal current transformer is as1-as2, bs1-bs2, cs1-cs2 respectively.
Fig. 2 and Fig. 3 is the schematic diagram of copper bar punching housing.Here copper bar uses as the input primary winding of one-level instrument transformer.
Instrument transformer of the present utility model, comprise in punching housing that three single-phase transformers are assembled into one shaping, the secondary output of described three single-phase transformers is all set with serial connection second signal current transformer, and the output of this second signal current transformer is drawn by line outlet.Described punching housing comprises the first housing parts and the second housing parts, first housing parts is used for punching and installs three copper bars, this housing parts has three center holes, for passing copper bar, second housing parts has three Kong Zhu, for installing three coils, two housing parts shapes are corresponding, make three copper bars right through three coils.The output of described second signal current transformer has 5A/30mA or 1A/30mA two kinds of specifications.In described punching housing, there is shockproof sponge.Described punching housing is plastics.
The utility model structure is three-phase integrated low pressure punching plastic shell instrument transformer, and substitute original three single phase low voltage punching plastic shell instrument transformers, this product shape is compacter, easier for installation, is more conducive to installing and using in switch cubicle.Because this product casing is that plastic shell punching is installed, S2 ground connection use after mounting in three-phase secondary line, therefore by such product line occupation mode in the industry, product casing is independent grounding no longer.
Claims (5)
1. an instrument transformer, it is characterized in that, comprise in punching housing that three single-phase transformers are assembled into one shaping, the secondary output of described three single-phase transformers is all set with serial connection second signal current transformer, and the output of this second signal current transformer is drawn by line outlet.
2. instrument transformer as claimed in claim 1, it is characterized in that, described punching housing comprises the first housing parts and the second housing parts, and the first housing parts is used for punching and installs three copper bars, and this housing parts has three center holes, for passing copper bar,
Second housing parts has three Kong Zhu, and for installing three coils, two housing parts shapes are corresponding, make three copper bars right through three coils.
3. instrument transformer as claimed in claim 1, it is characterized in that, the output of described second signal current transformer has 5A/30mA or 1A/30mA two kinds of specifications.
4. instrument transformer as claimed in claim 1, is characterized in that having shockproof sponge in described punching housing.
5. instrument transformer as claimed in claim 1, it is characterized in that, described punching housing is plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520588235.7U CN204857434U (en) | 2015-08-07 | 2015-08-07 | Mutual -inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520588235.7U CN204857434U (en) | 2015-08-07 | 2015-08-07 | Mutual -inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204857434U true CN204857434U (en) | 2015-12-09 |
Family
ID=54747961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520588235.7U Expired - Fee Related CN204857434U (en) | 2015-08-07 | 2015-08-07 | Mutual -inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204857434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826000A (en) * | 2016-05-17 | 2016-08-03 | 江苏靖江互感器厂有限公司 | Straight-through electron type current transformer for intelligent C-GIS |
| CN108735485A (en) * | 2018-08-09 | 2018-11-02 | 江苏创能电器有限公司 | Integral type mutual inductor |
-
2015
- 2015-08-07 CN CN201520588235.7U patent/CN204857434U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826000A (en) * | 2016-05-17 | 2016-08-03 | 江苏靖江互感器厂有限公司 | Straight-through electron type current transformer for intelligent C-GIS |
| CN108735485A (en) * | 2018-08-09 | 2018-11-02 | 江苏创能电器有限公司 | Integral type mutual inductor |
| CN108735485B (en) * | 2018-08-09 | 2024-06-07 | 江苏创能电器有限公司 | Integrated transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203278004U (en) | Compact low-voltage power distribution cabinet | |
| CN103633577B (en) | Low-voltage current transformer type is dynamic plug-in unit once | |
| CN204857434U (en) | Mutual -inductor | |
| CN203117372U (en) | High-voltage motor insulation monitoring module | |
| CN205670502U (en) | Three-phase hexa-atomic part Current Voltage Split assembled transformer | |
| CN203300421U (en) | High voltage measurement electricity-larceny-prevention energy-saving transformer | |
| CN203589559U (en) | Low-voltage current transformer type movable plug-in | |
| CN216354000U (en) | Intelligent molded case circuit breaker with metering and communication functions | |
| CN203799860U (en) | Instrument transformer special for outdoor prepayment metering tank | |
| CN202384164U (en) | Low-voltage combined mutual inductor for preventing electric larceny | |
| CN202084417U (en) | Electronic voltage transformer assembled inside switch cabinet | |
| CN206460864U (en) | A kind of current transformer | |
| CN202870144U (en) | Current measuring device for breaker or switch cabinet | |
| CN2515780Y (en) | Current transformer | |
| CN201674141U (en) | 24KV electric energy measuring cart with suspended meters | |
| CN203838225U (en) | Current detection and communication apparatus for thermo-magnetic circuit breaker | |
| CN201732673U (en) | Combined current transformer for branch and division circuit breakers | |
| CN203596325U (en) | Molded case circuit breaker | |
| CN215527618U (en) | General type measurement electric leakage module | |
| CN204441081U (en) | A kind of condenser bushing formula current transformer | |
| CN209150031U (en) | A kind of breaker leakage protection structure | |
| CN207743014U (en) | Three phase current transformer | |
| CN202102877U (en) | Electronic combined transformer assembled inside switch cabinet | |
| CN217690696U (en) | Integrated mutual inductor | |
| CN202003923U (en) | Electric-connection wire holder structure |
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: 20151209 Termination date: 20170807 |