CN201629220U - Current transformer with live sensor and contact box - Google Patents
Current transformer with live sensor and contact box Download PDFInfo
- Publication number
- CN201629220U CN201629220U CN2010201220167U CN201020122016U CN201629220U CN 201629220 U CN201629220 U CN 201629220U CN 2010201220167 U CN2010201220167 U CN 2010201220167U CN 201020122016 U CN201020122016 U CN 201020122016U CN 201629220 U CN201629220 U CN 201629220U
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- CN
- China
- Prior art keywords
- current transformer
- integral structure
- electrified sensor
- inlet wire
- winding
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- Expired - Lifetime
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Abstract
The utility model relates to a current transformer with a live sensor and a contact box. The current transformer is formed by the vacuum pouring of an iron core, a primary winding, a secondary winding, a primary incoming line insulating sleeve, a primary incoming line fixed contact, a primary outgoing line terminal, a secondary signal cable and an insulating flange through epoxy resin, and is of an integral structure by fixing a partition plate, wherein the electrode of a capacitive voltage divider of the live sensor is arranged in the integral structure, and the straight plate-shaped electrode is parallel to the primary winding and is fixedly sealed in the integral structure by the epoxy resin in an insulating manner. The current transformer has the function of live display, can accurately and sensitively display the live state of the high-voltage side of the current transformer during normal operation, and has the advantages of compact structure and convenient installation.
Description
Technical field
The utility model relates to electric power system high-voltage current measurement and protective relaying device, specifically a kind of electrified sensor contact boxlike current transformer.
Background technology
10KV-35KV is metal enclosed/the metal armouring switch cubicle in, current transformer is to use as current measurement, electric energy metrical or relaying protection; The electrification in high voltage transducer matches with electrification display and is used for the monitoring equipment device whether working voltage is arranged, simultaneously as the insulation column of switch cubicle mesohigh busbar; Existing switch cubicle mesohigh electrified sensor is two kinds of different stand-alone product versions with two kinds of critical pieces of electrification display, need consider the installing space of each parts during the switch cubicle design respectively; Continuous release along with novel switched cabinet, switch cubicle has miniaturization, modularization, functionalization, high-protection level, characteristics such as easy for installation, accessories such as the busbar transition distance in the switch cubicle is very little, the minimizing insulation column or the application of having omitted accessories such as insulation column.The current transformer of existing form and the design needs that the electrification in high voltage transducer can not be suitable for novel switched cabinet, it is the product of one that the switch cubicle industry needs a kind of colleeting comb instrument transformer, electrification in high voltage transducer, contact box function especially, promotes the technical equipment of switch cubicle on the whole.
The utility model content
At electrification in high voltage transducer that exists in the prior art and electrification display is absolute version, can not be suitable for the weak point that the design of novel switched cabinet needs, it is the electrified sensor contact boxlike current transformer of one that the technical problems to be solved in the utility model provides a kind of colleeting comb instrument transformer, electrification in high voltage transducer, contact box function.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
Comprising by iron core, winding, secondary winding, an inlet wire insulating sleeve, an inlet wire fixed contact, outlet terminal, secondary singal cable, an insulating flange adopts the epoxide resin vacuum cast to form, again by the stationary barrier formula structure that becomes one, described integral structure inside is provided with the electrode of electrified sensor capacitance partial pressure device, and the electrode of straight plate shape is parallel to winding and is encapsulated in the integral structure admittedly by epoxy resins insulation.
Described insulating flange is located at outside the end of an inlet wire insulating sleeve of integral structure, is provided with the installation groove along the insulating flange outer periphery; The holding wire of described electrified sensor capacitance partial pressure device and the lead-in wire of secondary winding adopt the secondary singal cable directly to draw; Described stationary barrier is positioned at the integral structure upper level arranges that its end is the bending form near the position of an inlet wire insulating sleeve, which is provided with installing hole; The truncated cone-shaped that a described inlet wire insulating sleeve is an indent which is provided with uniform step full skirt; A described outlet terminal is positioned at the integral structure bottom, for being threaded the flat type in hole.
The present invention has following beneficial effect and advantage:
1. charged display function, signal sensitivity: the utility model integral structure inside is provided with electrified sensor capacitance partial pressure device, the lead-in wire of this electrified sensor capacitance partial pressure device holding wire and secondary winding all adopts the secondary singal cable directly to draw, make to the utlity model has charged display function, can accurately show on high-tension side electriferous state when instrument transformer normally moves delicately.
2. compact conformation, easy for installation: the utility model is electrification display and the integrated formula structure that becomes one of the utility model, and an inlet wire connected mode adopts the Mume flower contact connected mode, makes the utility model structure compact more; Peg graft fixed installation and lift-on/lift-off type stationary barriers etc. of the groove that adopts insulating flange during installation and the dividing plate of switch cabinet cooperate mounting means, and the product installation is more reliably made things convenient for.
3. safe and reliable, insulation is stablized: the indoor design of the utility model inlet wire insulating sleeve has uniform step full skirt, has effectively strengthened inlet wire fixed contact creepage distance over the ground, strengthens the insulation level of product.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model external structure left view;
Fig. 3 is the utility model internal structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Shown in Fig. 1～3, a kind of electrified sensor contact of the utility model boxlike current transformer, comprising by iron core 1, winding 2, secondary winding 3, inlet wire insulating sleeve 4, inlet wire fixed contact 5, outlet terminal 6, secondary singal cable 7, an insulating flange 8 adopts the epoxide resin vacuums cast to form, again by the stationary barrier 9 formula structure that becomes one, described integral structure inside is provided with the electrode 10 of electrified sensor capacitance partial pressure device, and the electrode 10 of straight plate shape is parallel to winding and is encapsulated in the integral structure admittedly by epoxy resins insulation.
Described insulating flange 8 is located at outside the end of an inlet wire insulating sleeve 4 of integral structure, is provided with along insulating flange 8 outer periphery groove 11 is installed; The holding wire of electrified sensor capacitance partial pressure device and the lead-in wire of secondary winding 3 adopt secondary singal cable 7 directly to draw; Described stationary barrier 9 is positioned at the integral structure upper level arranges that its end is the bending form near the position of an inlet wire insulating sleeve 4, which is provided with installing hole 12; A described inlet wire insulating sleeve 4 is the truncated cone-shaped of indent, which is provided with uniform step full skirt 13; A described outlet terminal 6 is positioned at the integral structure bottom, for being threaded the flat type in hole; The connected mode of an inlet wire adopts the Mume flower contact connected mode.
The utility model uses when installing, three instrument transformers require earlier with the groove 11 of insulating flange 8 along the periphery position according to phase sequence, realize dividing plate grafting fixed installation with the switch cabinet, it is fixing to utilize stationary barrier 9 to carry out the horizontal level lifting again, carry out the connection of two wires signal cable 7 at last, the assembly work of electrified sensor contact boxlike current transformer is finished smoothly.
The utility model electrified sensor contact boxlike current transformer is a kind of new product that designs according to national standard fully, employing rolls iron core, utilize the electromagnetic conversion principle, make the secondary current situation of change of reflected measurement primary current exactly, be transferred to secondary measurement and control device; Electrified sensor capacitance partial pressure device is to utilize the capacitance partial pressure principle; the process reasonable computation also is distributed in product inside; can accurately show on high-tension side electriferous state when instrument transformer normally moves delicately; product directly is installed in the switch cubicle goes, use as electric current, electric energy measurement, charged demonstration and relaying protection.
The utility model is charged display function, signal sensitivity, compact conformation, easy for installation, safe and reliable, the stable totally-enclosed current transformer that insulate that adopts poured with epoxy resin to form, and can be widely used in the electric power system novel metal sealing/metal armouring switch cubicle and go.
Claims (6)
1. electrified sensor contact boxlike current transformer, comprise by iron core (1), a winding (2), secondary winding (3), an inlet wire insulating sleeve (4), an inlet wire fixed contact (5), an outlet terminal (6), secondary singal cable (7), insulating flange (8) adopts the epoxide resin vacuum cast to form, again by stationary barrier (9) the formula structure that becomes one, it is characterized in that: described integral structure inside is provided with the electrode (10) of electrified sensor capacitance partial pressure device, and the electrode of straight plate shape (10) is parallel to winding and is encapsulated in the integral structure admittedly by epoxy resins insulation.
2. by the described electrified sensor contact of right 1 requirement boxlike current transformer, it is characterized in that: described insulating flange (8) is located at outside the end of an inlet wire insulating sleeve (4) of integral structure, is provided with along insulating flange (8) outer periphery groove (11) is installed.
3. by the described electrified sensor contact of right 1 requirement boxlike current transformer, it is characterized in that: the lead-in wire of the holding wire of described electrified sensor capacitance partial pressure device and secondary winding (3) adopts secondary singal cable (7) directly to draw.
4. by the described electrified sensor contact of right 1 requirement boxlike current transformer, it is characterized in that: described stationary barrier (9) is positioned at the integral structure upper level and arranges, its end is the bending form near the position of an inlet wire insulating sleeve (4), which is provided with installing hole (12).
5. by the described electrified sensor contact of right 1 requirement boxlike current transformer, it is characterized in that: a described inlet wire insulating sleeve (4) is the truncated cone-shaped of indent, which is provided with uniform step full skirt (13).
6. by the described electrified sensor contact of right 1 requirement boxlike current transformer, it is characterized in that: a described outlet terminal (6) is positioned at the integral structure bottom, for being threaded the flat type in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201220167U CN201629220U (en) | 2010-03-03 | 2010-03-03 | Current transformer with live sensor and contact box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201220167U CN201629220U (en) | 2010-03-03 | 2010-03-03 | Current transformer with live sensor and contact box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629220U true CN201629220U (en) | 2010-11-10 |
Family
ID=43060619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201220167U Expired - Lifetime CN201629220U (en) | 2010-03-03 | 2010-03-03 | Current transformer with live sensor and contact box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629220U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158332A (en) * | 2016-06-22 | 2016-11-23 | 四川电器集团股份有限公司 | Transformer with contact box |
| CN113224648A (en) * | 2020-02-06 | 2021-08-06 | Abb瑞士股份有限公司 | Bushing for medium voltage switchgear |
-
2010
- 2010-03-03 CN CN2010201220167U patent/CN201629220U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158332A (en) * | 2016-06-22 | 2016-11-23 | 四川电器集团股份有限公司 | Transformer with contact box |
| CN113224648A (en) * | 2020-02-06 | 2021-08-06 | Abb瑞士股份有限公司 | Bushing for medium voltage switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Dabeihu Transformer Co., Ltd. Assignor: Dalian North Instrument Transformer Group Co., Ltd. Contract record no.: 2011430000125 Denomination of utility model: Current transformer with live sensor and contact box Granted publication date: 20101110 License type: Exclusive License Record date: 20110809 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |
|
| CX01 | Expiry of patent term |