CN204441081U - A kind of condenser bushing formula current transformer - Google Patents
A kind of condenser bushing formula current transformer Download PDFInfo
- Publication number
- CN204441081U CN204441081U CN201520138225.3U CN201520138225U CN204441081U CN 204441081 U CN204441081 U CN 204441081U CN 201520138225 U CN201520138225 U CN 201520138225U CN 204441081 U CN204441081 U CN 204441081U
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- CN
- China
- Prior art keywords
- current transformer
- capacitor plate
- voltage signal
- signal terminal
- annular core
- 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
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Abstract
The utility model discloses a kind of condenser bushing formula current transformer, the secondary capacitor plate of the output voltage signal comprising annular core and be connected with annular core, described annular core is evenly distributed with secondary winding, described secondary winding and the layering of secondary capacitor plate are built in plastic casing, plastic casing adopts the cast of high-quality epoxide resin vacuum, at secondary winding and secondary capacitor plate junction extracted current signal terminal and voltage signal terminal.The utility model compact conformation, takes up room little, cost-saving, easy for installation, stable and reliable operation.
Description
Technical field
The utility model relates to a kind of instrument transformer, particularly a kind of condenser bushing formula current transformer.
Background technology
Ring main unit is a kind of electric equipment being contained in by high voltage switchgear in metal or non-metallic insulation cabinet or making assembled compartment ring network power supplying units.Electrification display is that one is directly installed on indoor electric equipment, intuitively demonstrates electric equipment whether with the indicative safety device of working voltage.When equipment is with working voltage, this display display window flashes, and warning people high-tension apparatus is charged.Voltage on connection bus utilizes field coupled principle to be delivered to a kind of device of display by voltage sensor.Bushing current transformer; Be mounted on ring main unit inlet-outlet sleeve, convert last for bus big current to secondary small area analysis, for the equipment of instrument measurement or relaying protection.The electrification display that ring main unit is installed, its voltage sensor has at sleeve pipe built-in sensors, and what have is arranged on cable end, if will install electrification display not having built-in or cable end without in the equipment of transducer, then needs to install voltage sensor additional in addition.And ring main unit is commonly volume miniaturization, compact conformation at present, do not have too many excess room to install, and current transformer is the equipment that must fill.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of compact conformation, takes up room little, cost-saving, easy for installation, the condenser bushing formula current transformer of stable and reliable operation.
The utility model is achieved through the following technical solutions:
A kind of condenser bushing formula current transformer, the secondary capacitor plate of the output voltage signal comprising annular core and be connected with annular core, described annular core is evenly distributed with secondary winding, described secondary winding and the layering of secondary capacitor plate are built in plastic casing, plastic casing adopts the cast of high-quality epoxide resin vacuum, at secondary winding and secondary capacitor plate junction extracted current signal terminal and voltage signal terminal.
As preferably, described voltage signal terminal is connected with display.
As preferably, described voltage signal terminal is connected by external wire with display.
The beneficial effects of the utility model are: due to described annular core being evenly distributed with secondary winding, described secondary winding and the layering of secondary capacitor plate are built in plastic casing, plastic casing adopts the cast of high-quality epoxide resin vacuum, at secondary winding and secondary capacitor plate junction extracted current signal terminal and voltage signal terminal, so be arranged on ring main unit inlet-outlet sleeve, the capacitor plate of its secondary with high voltage bus without directly contacting, safe and reliable.
Accompanying drawing explanation
For ease of illustrating, the utility model is described in detail by following specific embodiment and accompanying drawing.
Fig. 1 is the circuit diagram of the utility model condenser bushing formula current transformer.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection range of the present utility model.
As shown in Figure 1, a kind of condenser bushing formula current transformer, the secondary capacitor plate of the output voltage signal comprising annular core and be connected with annular core, described annular core is evenly distributed with secondary winding, described secondary winding and the layering of secondary capacitor plate are built in plastic casing, plastic casing adopts the cast of high-quality epoxide resin vacuum, at secondary winding and secondary capacitor plate junction extracted current signal terminal and voltage signal terminal; Voltage signal terminal is connected with display 1, and voltage signal terminal is connected by external wire with display 1, and CVT is voltage signal terminal, and S1, S2 are secondary wiring terminals.
The utility model condenser bushing formula current transformer, compact conformation, easy for installation, moisture proof, non-maintaining, insulation property are good, and antijamming capability is strong, be arranged on ring main unit inlet-outlet sleeve, the capacitor plate of its secondary with high voltage bus without directly contacting, safe and reliable.Operation principle: utilize the field coupled principle between high voltage electric field and transducer, in device, secondary capacitor plate and high voltage bus are responded to, are supplied electrification display, by electrification display judgment device whether with working voltage by device secondary CVT terminal output voltage signal.
The utility model condenser bushing formula current transformer; the voltage sensor of electrification display in ring main unit is built in bushing current transformer; form capacitance-voltage-distributing type current transformer; this bushing current transformer is arranged on ring main unit inlet-outlet sleeve root; device measuring and protection can be supplied by output current signal, can electrification display judgment means be supplied whether charged by output voltage signal again.In bushing current transformer, install derided capacitors pole piece additional, draw CVT binding post at bushing current transformer secondary output, external electrification display.Different for function two equipment are set together by this device, and use epoxy resin integral embedding, have compact conformation, take up room the features such as little, cost-saving, easy for installation, stable and reliable operation.
The above, be only embodiment of the present utility model, but protection range of the present utility model is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection range of the present utility model.Therefore, the protection range that protection range of the present utility model should limit with claims is as the criterion.
Claims (3)
1. a condenser bushing formula current transformer, the secondary capacitor plate of the output voltage signal comprising annular core and be connected with annular core, it is characterized in that: described annular core is evenly distributed with secondary winding, described secondary winding and the layering of secondary capacitor plate are built in plastic casing, at secondary winding and secondary capacitor plate junction extracted current signal terminal and voltage signal terminal.
2. condenser bushing formula current transformer according to claim 1, is characterized in that: voltage signal terminal is connected with display.
3. condenser bushing formula current transformer according to claim 2, is characterized in that: voltage signal terminal is connected by external wire with display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138225.3U CN204441081U (en) | 2015-03-12 | 2015-03-12 | A kind of condenser bushing formula current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138225.3U CN204441081U (en) | 2015-03-12 | 2015-03-12 | A kind of condenser bushing formula current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204441081U true CN204441081U (en) | 2015-07-01 |
Family
ID=53608916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520138225.3U Expired - Fee Related CN204441081U (en) | 2015-03-12 | 2015-03-12 | A kind of condenser bushing formula current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204441081U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710020A (en) * | 2018-08-16 | 2018-10-26 | 江苏靖江互感器股份有限公司 | A kind of controller switching equipment can measure capacitive double-type voltage sensor with taking |
-
2015
- 2015-03-12 CN CN201520138225.3U patent/CN204441081U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710020A (en) * | 2018-08-16 | 2018-10-26 | 江苏靖江互感器股份有限公司 | A kind of controller switching equipment can measure capacitive double-type voltage sensor with taking |
| CN108710020B (en) * | 2018-08-16 | 2023-12-08 | 江苏靖江互感器股份有限公司 | Energy-taking and measuring capacitive dual voltage sensor for power distribution equipment |
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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: 20150701 Termination date: 20160312 |