CN205670479U - The combination transformer that a kind of high pressure plug formula connects - Google Patents
The combination transformer that a kind of high pressure plug formula connects Download PDFInfo
- Publication number
- CN205670479U CN205670479U CN201620567552.5U CN201620567552U CN205670479U CN 205670479 U CN205670479 U CN 205670479U CN 201620567552 U CN201620567552 U CN 201620567552U CN 205670479 U CN205670479 U CN 205670479U
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- current transformer
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Abstract
The combination transformer that a kind of high pressure plug formula connects, uses epoxy resins insulation.The electric elements that collecting voltage transformer, current transformer and high-tension fuse are integrated, compact conformation.Considerably less is wanted than the volume of the electric appliance unit of the said function individually using pressure transformer, current transformer and high-tension fuse to be combined into.Measuring in power equipment, measure, especially electric quantity metering is used.High-pressure section is closed-loop epoxy resins state of insulation, it is not necessary to stay electric clearance, can meet high altitude localities and use requirement.One time winding carries high-tension fuse, can protect a winding of voltage transformer.Secondary terminals carry-out bit is equipped with the secondary output terminals box that can close, and can meet the use requirement of high filthy environment.Electric current can be once that American ZT 15/200 elbow-type cable plug head supports the use into and out of line end and end of incoming cables of voltage, and its high-voltage connection is convenient, fast.
Description
Technical field
This utility model belongs to transformer technical field, the combination mutual inductance connected particularly to a kind of high pressure plug formula
Device.
Background technology
In electric power transmission and distribution field, in different electric pressures, current transformer and voltage transformer are widely used, and are electricity
Electrical equipment important in Force system.It is used for measuring, measuring and the application of the aspect such as protection.Along with to operation power quality
Requirement improves constantly, and requires also improving constantly to every technology of current transformer and voltage transformer.New material, new skill
Art, the continuous appearance of new technology, also promoting power system technology in terms of applied current transformer and voltage transformer to refer to
Mark, safety and reliability improve constantly.Generally, current transformer and voltage transformer are independently to make in actual applications
?.
Utility model content
This utility model is to use epoxy resin, and high-tension fuse, voltage transformer, current transformer are cast in epoxy
In resin, between unit epoxy resin isolation, insulating properties be more than air insulation, therefore reduce between out-phase electrical body away from
From, comparing for realizing the device of equal functional unit, this utility model reduces the volume of entirety.
The technical scheme used
The combination transformer that a kind of high pressure plug formula connects, including: secondary output terminals case assembly, epoxy resin structure
Part, the first Current Transformer Assembly, the second Current Transformer Assembly, the first voltage transformer assembly, the second voltage transformer group
Part；It is characterized in that: the first Current Transformer Assembly is mainly by winding of the first current transformer, the first current transformer two
Secondary winding, the first current transformer core composition；Second Current Transformer Assembly mainly by winding of the second current transformer,
Second secondary winding in current transformer, the second current transformer core composition；First voltage transformer assembly is mainly by the first electricity
Pressure winding of transformer, the first secondary windings of PT, the first iron core of voltage transformer composition；Second voltage transformer
Assembly is mainly by winding of the second voltage transformer, the second secondary windings of PT, the second iron core of voltage transformer group
Become；First Current Transformer Assembly, the second Current Transformer Assembly, the first voltage transformer assembly, the second voltage transformer group
Part and secondary output terminals case assembly are cast for one in being placed in epoxy member.
First high pressure primary conductive stake assembly, the second high pressure primary conductive stake assembly, the 3rd high pressure primary conductive stake assembly,
4th high pressure primary conductive stake assembly, the 5th high pressure primary conductive stake assembly and the 6th high pressure primary conductive stake assembly are placed in epoxy
One it is cast in resin component element.
First high pressure primary conductive stake assembly mainly by the first elbow-type cable plug socket, the first high pressure primary conductive stake and
First high-pressure conductor tightens net composition；Second high pressure primary conductive stake assembly mainly by the second elbow-type cable plug socket, second
High pressure primary conductive stake and the second high-pressure conductor tighten net composition；3rd high pressure primary conductive stake assembly is mainly by the 3rd elbow-type electricity
Cable plug and socket, the 3rd high pressure primary conductive stake and the 3rd high-pressure conductor tighten net composition；4th high pressure primary conductive stake assembly
Mainly tightened net formed by the 4th elbow-type cable plug socket, the 4th high pressure primary conductive stake and the 4th high-pressure conductor；5th is high
Pressure primary conductive stake assembly is mainly contracted by the 5th elbow-type cable plug socket, the 5th high pressure primary conductive stake and the 5th high-pressure conductor
Tightly net composition；6th high pressure primary conductive stake assembly is mainly by the 6th elbow-type cable plug socket, the 6th high pressure primary conductive stake
Net composition is tightened with the 6th high-pressure conductor；
Inserting of the first high-tension fuse, the second high-voltage fuse and the 3rd high-tension fuse it is cast with in epoxy member
Connect space.
First current transformer core passes hub of a spool and first Current Mutual Inductance of first winding of current transformer
The hub of a spool of device Secondary Winding；
Second current transformer core passes hub of a spool and second current transformer of two windings of current transformer
The hub of a spool of Secondary Winding；
The head end of first winding of current transformer connects lower end and first height of the first high pressure primary conductive stake assembly
The head end of pressure fuse；The end of first winding of current transformer connects the lower end of the 6th high pressure primary conductive stake assembly；
The head end of second winding of current transformer connects lower end and the three-hypers of the 3rd high pressure primary conductive stake assembly
The head end of pressure fuse；The end of second winding of current transformer connects the lower end of the 4th high pressure primary conductive stake assembly；
First binding post of the first secondary winding in current transformer head end connecting secondary lead-out terminal case assembly；First electricity
Second binding post of current transformer Secondary Winding end connecting secondary lead-out terminal case assembly；
3rd binding post of the second secondary winding in current transformer head end connecting secondary lead-out terminal case assembly；Second electricity
4th binding post of current transformer Secondary Winding end connecting secondary lead-out terminal case assembly.
First iron core of voltage transformer passes hub of a spool and first mutual induction of voltage of first winding of voltage transformer
The hub of a spool of device Secondary Winding；
Second iron core of voltage transformer passes hub of a spool and second mutual induction of voltage of second winding of voltage transformer
The hub of a spool of device Secondary Winding；
The head end of first winding of voltage transformer connects the end of the first high-tension fuse；Second voltage transformer one
The head end of secondary winding connects the end of the 3rd high-tension fuse；
The end of the second high-tension fuse connects end and second voltage transformer of first winding of voltage transformer
The end of winding；
Head end connecting secondary lead-out terminal case assembly the 7th binding post of the first secondary windings of PT, the first electricity
End connecting secondary lead-out terminal case assembly the 6th binding post of pressure transformer Secondary Winding；
Head end connecting secondary lead-out terminal case assembly the 5th binding post of the second secondary windings of PT, the second electricity
End connecting secondary lead-out terminal case assembly the 6th binding post of pressure transformer Secondary Winding.
The lower end of the first high pressure primary conductive stake assembly connects the head end of the first high-tension fuse；3rd high pressure primary conductive
The lower end of stake assembly connects the head end of the 3rd high-tension fuse；
The lower end of the second high pressure primary conductive stake assembly connects the head end of the second high-tension fuse and the 5th high pressure is once led
The lower end of electricity stake assembly.
Before poured with epoxy resin, the electrical connection of first and second between each electrical component has connected, and need to
The part wanting external connection is drawn and is received the binding post specified, convenient wiring when using.High-tension fuse is plug-in, permissible
Change.
Leading-out terminal of electric current and leading-out terminal of voltage are that American ZT-15/200 elbow-type cable plug head supports the use,
Its high-voltage connection is convenient, fast.
Epoxy member is connected with mounting base, and lifting bolt is connected with mounting base.
American ZT-15/200 elbow-type cable plug head, lifting bolt and high-tension fuse are commercially available prod.
Advantage
Mainly electrical equipment for the purpose of metering is simultaneously need to when applied current transformer and voltage transformer, electrically set
Standby required space will reduce.High-pressure section is insulation and obturation state, it is not necessary to stay electric clearance, can meet high altitude localities
Use requirement.Secondary terminals carry-out bit is equipped with the secondary output terminals box that can close, and the use that can meet high filthy environment is wanted
Ask.Elbow cable plug receptacle interior be provided with high-pressure conductor tighten net ensure a part contact good.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of the combination transformer that a kind of high pressure plug formula connects；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is that the A of Fig. 1 is to sectional view；
Fig. 4 is that the B of Fig. 1 is to sectional view；
Fig. 5 is transformer secondary leading-out terminal case assembly structural representation；
Fig. 6 is the electrical schematic diagram of the combination transformer that a kind of high pressure plug formula connects.
Detailed description of the invention
The combination transformer that a kind of high pressure plug formula connects, including: secondary output terminals case assembly 4, epoxy resin
Component the 7, first Current Transformer Assembly, the second Current Transformer Assembly, the first voltage transformer assembly, the second voltage transformer
Assembly；It is characterized in that: the first Current Transformer Assembly is mainly by a first current transformer winding the 26, first Current Mutual Inductance
Device Secondary Winding the 27, first current transformer core 28 forms；Second Current Transformer Assembly is mainly by the second current transformer
One time winding the 35, second secondary winding in current transformer the 36, second current transformer core 37 forms；First voltage transformer group
Part is mainly by a first voltage transformer winding the 29, first secondary windings of PT the 30, first iron core of voltage transformer
31 compositions；Second voltage transformer assembly mainly by a second voltage transformer winding the 34, second voltage transformer secondary around
Group the 33, second iron core of voltage transformer 32 forms；First Current Transformer Assembly, the second Current Transformer Assembly, the first voltage
Transformer component, the second voltage transformer assembly and secondary output terminals case assembly 4 are cast for one in being placed in epoxy member 7
Body；
First high pressure primary conductive stake assembly, the second high pressure primary conductive stake assembly, the 3rd high pressure primary conductive stake assembly,
4th high pressure primary conductive stake assembly, the 5th high pressure primary conductive stake assembly and the 6th high pressure primary conductive stake assembly are placed in epoxy
One it is cast in resin component element 7；
First high pressure primary conductive stake assembly is mainly by first elbow-type cable plug socket the 8, first high pressure primary conductive stake 9
Tighten net 10 with the first high-pressure conductor to form；Second high pressure primary conductive stake assembly is mainly by the second elbow-type cable plug socket
11, the second high pressure primary conductive stake 12 and the second high-pressure conductor tighten net 13 and form；3rd high pressure primary conductive stake assembly is main
Tightened net 16 formed by the 3rd elbow-type cable plug socket the 14, the 3rd high pressure primary conductive stake 15 and the 3rd high-pressure conductor；4th
High pressure primary conductive stake assembly is mainly by the 4th elbow-type cable plug socket the 17, the 4th high pressure primary conductive stake 18 and the 4th high pressure
Conductor tightens net 19 and forms；5th high pressure primary conductive stake assembly is mainly by the 5th elbow-type cable plug socket the 20, the 5th high pressure
Primary conductive stake 21 and the 5th high-pressure conductor tighten net 22 and form；6th high pressure primary conductive stake assembly is mainly by the 6th elbow-type electricity
Cable plug and socket the 23, the 6th high pressure primary conductive stake 24 and the 6th high-pressure conductor tighten net 25 and form；
The first high-tension fuse the 1, second high-voltage fuse 2 and the 3rd high-tension fuse 3 it is cast with in epoxy member 7
Grafting space；
First current transformer core 28 passes hub of a spool and first electric current of first winding 26 of current transformer
The hub of a spool of transformer Secondary Winding 27；
Second current transformer core 37 is mutual through hub of a spool and second electric current of two windings 35 of current transformer
The hub of a spool of sensor Secondary Winding 36；
The head end of first winding 27 of current transformer connects the lower end and first of the first high pressure primary conductive stake assembly
The head end of high-tension fuse 1；The end of first winding 27 of current transformer connects the 6th high pressure primary conductive stake assembly
Lower end；
The head end of second winding 35 of current transformer connects the lower end and the 3rd of the 3rd high pressure primary conductive stake assembly
The head end of high-tension fuse 3；The end of second winding 35 of current transformer connects the 4th high pressure primary conductive stake assembly
Lower end；
First binding post 38 of the first secondary winding in current transformer 27 head end connecting secondary lead-out terminal case assembly 4；
Second binding post 39 of the first secondary winding in current transformer 27 end connecting secondary lead-out terminal case assembly 4；
3rd binding post 40 of the second secondary winding in current transformer 36 head end connecting secondary lead-out terminal case assembly 4；
4th binding post 41 of the second secondary winding in current transformer 36 end connecting secondary lead-out terminal case assembly 4；
First iron core of voltage transformer 31 passes hub of a spool and first voltage of first winding 29 of voltage transformer
The hub of a spool of transformer Secondary Winding 30；
Second iron core of voltage transformer 32 passes hub of a spool and second voltage of second winding 34 of voltage transformer
The hub of a spool of transformer Secondary Winding 33；
The head end of first winding 29 of voltage transformer connects the end of the first high-tension fuse 1；Second mutual induction of voltage
The head end of winding 34 of device connects the end of the 3rd high-tension fuse 3；
The end of the second high-tension fuse 2 connects end and second mutual induction of voltage of first winding 29 of voltage transformer
The end of winding 34 of device；
Head end connecting secondary lead-out terminal case assembly 4 the 7th binding post 44 of the first secondary windings of PT 30,
End connecting secondary lead-out terminal case assembly 4 the 6th binding post 43 of the first secondary windings of PT 30；
Head end connecting secondary lead-out terminal case assembly 4 the 5th binding post 42 of the second secondary windings of PT 33,
End connecting secondary lead-out terminal case assembly 4 the 6th binding post 43 of the second secondary windings of PT 33；
The lower end of the first high pressure primary conductive stake assembly connects the head end of the first high-tension fuse 1；3rd high pressure is once led
The lower end of electricity stake assembly connects the head end of the 3rd high-tension fuse 3；
The lower end of the second high pressure primary conductive stake assembly connects the head end of the second high-tension fuse 2 and the 5th high pressure is once led
The lower end of electricity stake assembly；
Between the first secondary winding in current transformer 27 and head end and the end of the second secondary winding in current transformer 36
Draw terminals, be coupled with on secondary output terminals assembly 4 on two binding posts setting up；
Epoxy member 7 is fixing with mounting base 5 to be connected, and lifting bolt 6 is connected with mounting base 5.
Using method
Three-phase high-voltage power supply is accessed three high pressure primary conductive stakes of high-tension fuse side, the other three high pressure primary conductive
Staking enters electricity consumption side.When high voltage power supply measuring tape electricity, the secondary side of built-in voltage transformer just can produce one in proportion
Low voltage value；When high voltage electric, the once survey of built-in current transformer produces electric current, produces by than row at secondary side simultaneously
One current value.Instrument required for the voltage and current value access that voltage transformer summation current transformer secondary side produces, instrument
Table will instruction required for value.
Relay protection unit can set protection value, when on high-tension side voltage according to the voltage and current value of secondary side
Send contact signal when reaching certain value with electric current, report to the police or drive high voltage functionality element movement.To electricity consumption side line road and equipment
Protect.
Operation principle
The iron core of voltage transformer passes a winding and the Secondary Winding of voltage transformer, when a winding incoming transport
During voltage signal, the cylinder of a winding spiral-tube produces alternating magnetic field.Alternating magnetic field produces magnetic flux in the core, in iron core
Alternating magnetic field induced voltage transformer Secondary Winding, the two ends of Secondary Winding will produce magnitude of voltage.This magnitude of voltage is equal to two
The number of turn of secondary winding is multiplied by, with the ratio of the number of turn of a winding, the magnitude of voltage once surveyed.
The operation principle of current transformer and the operation principle of voltage transformer are the same, and simply current transformer stresses
In the conversion to the electric current once surveyed.The number of turn and two that current value is a winding that secondary winding in current transformer two ends produce
The ratio of the number of turn of secondary winding is multiplied by the current value once surveyed.
Built-in high-tension fuse is to protect built-in voltage transformer use, when fault surveyed by voltage transformer, high
The fuse failure of pressure fuse.High-tension fuse can be changed.
Claims (3)
1. the combination transformer that high pressure plug formula connects, including: secondary output terminals case assembly (4), epoxy resin
Component (7), the first Current Transformer Assembly, the second Current Transformer Assembly, the first voltage transformer assembly, the second mutual induction of voltage
Device assembly；It is characterized in that: the first Current Transformer Assembly is mainly by the first current transformer winding (26), first electric current
Transformer Secondary Winding (27), the first current transformer core (28) form；Second Current Transformer Assembly is mainly by the second electricity
Winding (35) of current transformer, the second secondary winding in current transformer (36), the second current transformer core (37) composition；The
One voltage transformer assembly mainly by winding (29) of the first voltage transformer, the first secondary windings of PT (30),
First iron core of voltage transformer (31) forms；Second voltage transformer assembly is mainly by winding of the second voltage transformer
(34), the second secondary windings of PT (33), the second iron core of voltage transformer (32) composition；First current transformer group
Part, the second Current Transformer Assembly, the first voltage transformer assembly, the second voltage transformer assembly and secondary output terminals box group
Part (4) is cast for one in being placed in epoxy member (7)；
First high pressure primary conductive stake assembly, the second high pressure primary conductive stake assembly, the 3rd high pressure primary conductive stake assembly, the 4th
High pressure primary conductive stake assembly, the 5th high pressure primary conductive stake assembly and the 6th high pressure primary conductive stake assembly are placed in epoxy resin
One it is cast in component (7)；
First high pressure primary conductive stake assembly is mainly by the first elbow-type cable plug socket (8), the first high pressure primary conductive stake (9)
Net (10) composition is tightened with the first high-pressure conductor；Second high pressure primary conductive stake assembly is mainly by the second elbow-type cable plug socket
(11), the second high pressure primary conductive stake (12) and the second high-pressure conductor tighten net (13) composition；3rd high pressure primary conductive stake group
Part is mainly tightened net by the 3rd elbow-type cable plug socket (14), the 3rd high pressure primary conductive stake (15) and the 3rd high-pressure conductor
(16) composition；4th high pressure primary conductive stake assembly is mainly once led by the 4th elbow-type cable plug socket (17), the 4th high pressure
Electricity stake (18) and the 4th high-pressure conductor tighten net (19) composition；5th high pressure primary conductive stake assembly is mainly by the 5th elbow-type cable
Plug and socket (20), the 5th high pressure primary conductive stake (21) and the 5th high-pressure conductor tighten net (22) composition；6th high pressure is once
Conduction stake assembly is mainly by the 6th elbow-type cable plug socket (23), the 6th high pressure primary conductive stake (24) and the 6th high-pressure conductor
Tighten net (25) composition；
The first high-tension fuse (1), the second high-voltage fuse (2) and the 3rd high-voltage fuse it is cast with in epoxy member (7)
The grafting space of device (3)；
First current transformer core (28) passes hub of a spool and first electric current of winding (26) of the first current transformer
The hub of a spool of transformer Secondary Winding (27)；
Second current transformer core (37) is mutual through hub of a spool and second electric current of winding (35) of two current transformers
The hub of a spool of sensor Secondary Winding (36)；
The head end of the first current transformer one time winding (27) connects lower end and first height of the first high pressure primary conductive stake assembly
The head end of pressure fuse (1)；The end of the first current transformer one time winding (27) connects the 6th high pressure primary conductive stake assembly
Lower end；
The head end of the second current transformer one time winding (35) connects lower end and the three-hypers of the 3rd high pressure primary conductive stake assembly
The head end of pressure fuse (3)；The end of the second current transformer one time winding (35) connects the 4th high pressure primary conductive stake assembly
Lower end；
First binding post of the first secondary winding in current transformer (27) head end connecting secondary lead-out terminal case assembly (4)
(38)；Second binding post of the first secondary winding in current transformer (27) end connecting secondary lead-out terminal case assembly (4)
(39)；
3rd binding post of the second secondary winding in current transformer (36) head end connecting secondary lead-out terminal case assembly (4)
(40)；4th binding post of the second secondary winding in current transformer (36) end connecting secondary lead-out terminal case assembly (4)
(41)；
First iron core of voltage transformer (31) passes hub of a spool and first voltage of winding (29) of the first voltage transformer
The hub of a spool of transformer Secondary Winding (30)；
Second iron core of voltage transformer (32) passes hub of a spool and second voltage of winding (34) of the second voltage transformer
The hub of a spool of transformer Secondary Winding (33)；
The head end of the first voltage transformer one time winding (29) connects the end of the first high-tension fuse (1)；Second mutual induction of voltage
The head end of winding (34) of device connects the end of the 3rd high-tension fuse (3)；
The end of the second high-tension fuse (2) connects end and second mutual induction of voltage of winding (29) of the first voltage transformer
The end of winding (34) of device；
Head end connecting secondary lead-out terminal case assembly (4) the 7th binding post of the first secondary windings of PT (30)
(44), end connecting secondary lead-out terminal case assembly (4) the 6th binding post of the first secondary windings of PT (30)
(43)；
Head end connecting secondary lead-out terminal case assembly (4) the 5th binding post of the second secondary windings of PT (33)
(42), end connecting secondary lead-out terminal case assembly (4) the 6th binding post of the second secondary windings of PT (33)
(43)；
The lower end of the first high pressure primary conductive stake assembly connects the head end of the first high-tension fuse (1)；3rd high pressure primary conductive
The lower end of stake assembly connects the head end of the 3rd high-tension fuse (3)；
The lower end of the second high pressure primary conductive stake assembly connects head end and the 5th high pressure primary conductive of the second high-tension fuse (2)
The lower end of stake assembly.
2. the combination transformer connected according to a kind of high pressure plug formula described in claims 1, it is characterised in that: the
Wiring is drawn between head end and the end of one secondary winding in current transformer (27) and the second secondary winding in current transformer (36)
End, is coupled with on secondary output terminals assembly (4) on two binding posts setting up.
3. the combination transformer connected according to a kind of high pressure plug formula described in claims 1, it is characterised in that: epoxy
Resin component element (7) is fixing with mounting base (5) to be connected, and lifting bolt (6) is connected with mounting base (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620567552.5U CN205670479U (en) | 2016-06-14 | 2016-06-14 | The combination transformer that a kind of high pressure plug formula connects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620567552.5U CN205670479U (en) | 2016-06-14 | 2016-06-14 | The combination transformer that a kind of high pressure plug formula connects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205670479U true CN205670479U (en) | 2016-11-02 |
Family
ID=57191264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620567552.5U Expired - Fee Related CN205670479U (en) | 2016-06-14 | 2016-06-14 | The combination transformer that a kind of high pressure plug formula connects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205670479U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971831A (en) * | 2017-04-05 | 2017-07-21 | 科誉德电气（苏州）有限公司 | Voltage transformer |
| CN107645080A (en) * | 2017-10-31 | 2018-01-30 | 现代重工(中国)电气有限公司 | A kind of integral type Current Mutual Inductance cable socket |
| CN108258608A (en) * | 2017-12-15 | 2018-07-06 | 北京双杰电气股份有限公司 | A kind of solid insulation metering cabinet |
| 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 |
| CN111554488A (en) * | 2020-05-23 | 2020-08-18 | 安徽华能集团电器有限公司 | Multi-specification current mutual inductance assembly capable of achieving quick switching connection |
-
2016
- 2016-06-14 CN CN201620567552.5U patent/CN205670479U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971831A (en) * | 2017-04-05 | 2017-07-21 | 科誉德电气（苏州）有限公司 | Voltage transformer |
| CN107645080A (en) * | 2017-10-31 | 2018-01-30 | 现代重工(中国)电气有限公司 | A kind of integral type Current Mutual Inductance cable socket |
| CN108258608A (en) * | 2017-12-15 | 2018-07-06 | 北京双杰电气股份有限公司 | A kind of solid insulation metering cabinet |
| CN108258608B (en) * | 2017-12-15 | 2020-08-04 | 北京双杰电气股份有限公司 | Solid insulation measurement cabinet |
| 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 |
| CN111554488A (en) * | 2020-05-23 | 2020-08-18 | 安徽华能集团电器有限公司 | Multi-specification current mutual inductance assembly capable of achieving quick switching connection |
| CN111554488B (en) * | 2020-05-23 | 2023-03-10 | 安徽华能集团电器有限公司 | Multi-specification current mutual inductance assembly capable of achieving quick switching connection |
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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 |
Granted publication date: 20161102 Termination date: 20200614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |