CN207800341U - A kind of band busbar wall-penetrating type current transformer - Google Patents
A kind of band busbar wall-penetrating type current transformer Download PDFInfo
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- CN207800341U CN207800341U CN201721648713.4U CN201721648713U CN207800341U CN 207800341 U CN207800341 U CN 207800341U CN 201721648713 U CN201721648713 U CN 201721648713U CN 207800341 U CN207800341 U CN 207800341U
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Abstract
The utility model is related to electric system high-tension measurement and protective device, more particularly to a kind of band busbar wall-penetrating type current transformer.Including insulator and the iron core being encapsulated in insulator, secondary winding, first winding and annular capacitor bleeder mechanism, wherein iron core is loop configuration, secondary winding is wound on iron core, secondary winding and annular capacitor bleeder mechanism are set on the primary conductive bar of first winding, the secondary connection lead being connect with secondary winding and the capacitance leading-out terminal being connect with annular capacitor bleeder mechanism are drawn by insulator, and the both ends of first winding are the circle contact shape for plug.The utility model is formed using epoxide resin vacuum is casting insulated, has the characteristics that reliable, flexible for installation small, simple in structure, easy-to-connect, insulation, easy care, economy are higher.
Description
Technical field
The utility model is related to electric system high-tension measurement and protective device, more particularly to a kind of band busbar wall-penetrating type electric current
Mutual inductor.
Background technology
It is that setting for electric current, electric energy or relay protection is measured in power system switch cabinet with busbar wall-penetrating type current transformer
Standby, the bus-type current transformer through walls that electric system at present uses has part using the exposed semiclosed current transformer of iron core
(i.e. encapsulated inside has three iron core made of the insulating body of first and second winding, closed assembly, metal mounting plate main elements through phase
Close folder, bolt etc. is assembled into an overall structure), that there is volumes is big, creepage distance is small, dynamic and thermal stability electric current is small, metering
Precision is low, the easy moisture absorption, easy stealing the shortcomings of；Also part wall-penetrating type current transformer without busbar, (i.e. wrap by inner core etc.
In resin, but without primary conductive body) product, that there are volumes is big for such product, and measuring accuracy is low, easy stealing, easily discharges
The shortcomings that, and properties of product extend with usage time, and precision, insulation decline in various degree, become in electric system and set
The hidden danger of standby safe operation, the above problems are puzzlement electric system service personnel always, additionally, due to the volume of mutual inductor
Greatly, to cause the volume of switch cabinet also larger, cabinet the space occupied is also larger, very unfavorable to economizing on resources, and becomes
It is urgently solved the problems, such as in electric system wall-penetrating type current transformer upgrading and development.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of band busbar wall-penetrating type current transformer, with solution
Wall-penetrating type current transformer volume is big in certainly existing power system switch cabinet, creepage distance is small, dynamic and thermal stability electric current is small, metering essence
The shortcomings of spending low, the easy moisture absorption.
To achieve the goals above, the utility model uses following technical scheme：
A kind of band busbar wall-penetrating type current transformer, including insulator and the iron core, secondary that is encapsulated in the insulator
Winding, first winding and annular capacitor bleeder mechanism, wherein iron core are loop configuration, and the secondary winding is wound in the iron core
On, the secondary winding and annular capacitor bleeder mechanism are set on the primary conductive bar of the first winding, with described two
The secondary connection lead of secondary winding connection and the capacitance leading-out terminal that connect with the annular capacitor bleeder mechanism are by described exhausted
Edge body is drawn, and the both ends of the first winding are the circle contact shape for plug.
The insulator is to be poured into a mould first winding, secondary winding and and annular capacitor partial pressure dress using epoxide resin vacuum
It sets and is encapsulated in internal L-type integral structure.
The bottom of the insulator is equipped with installation inserts.
The secondary connection lead is drawn by the bottom of the insulator and end is connected with secondary wiring terminals.
The outside of the secondary wiring terminals is equipped with separate terminal enclosure.
The capacitance leading-out terminal is set on the side wall of the insulator.
The end of incoming cables of the first winding is placed in the seal groove that the insulator end is equipped with.
The outer surface of the insulator is equipped with sprayed-on Al layer.
The utility model has the advantages that and advantage：
1. the utility model high mechanical strength, easy for installation：The utility model integrally uses three one group of mounting means, contracting
Small whole volume, is insulated partition board and realizes and facilitate installation with cabinet, more ensure that and is set in use and transportational process
Standby globality and higher mechanical strength.
2. the utility model insulation is stablized, capacitance output is accurate：Cooperation casing use increases surface creepage distance, capacitance
Value output stabilization matches the operating condition that can accurately react cabinet with electrification display.
3. the utility model sealed reliable, dust-proof, vibrationproof：The utility model utilizes insulated mounting plate when combining installation
Installation, ensure that the dust seal of the high voltage bus room and operating room in equipment is reliable, and improve in transportational process and
Vibrationproof performance when other electrical shocks, avoids the generation of vibration damage phenomenon.
4. the utility model standardization, generalization coefficient are high：This utility model is switched for 12kV solid insulation withdraw-types
Equipment uses the product that vacuum interrupter withdraw-type circuit breaker cart mode is developed, and realizes two kinds of functions：Major loop close and every
From function.Component of solid switch equipment is hermetically sealed in epoxy, and use pole technology, by vacuum interrupter,
The combinations such as main conductive circuit, insulating supporting are integral, and realize all insulation, hermetically sealed, non-maintaining structure, while also realizing
Unit replaceable structure.
5. the utility model made of epoxide resin vacuum cast, has, small, creepage distance is big, dynamic and thermal stability
The advantages that electric current is high, measuring accuracy is high, moisture-proof, anti-condensation, anti-electricity-theft.
Description of the drawings
Fig. 1 is the internal structure schematic diagram of the utility model；
Fig. 2 is the external structure schematic diagram of the utility model；
Fig. 3 is the right view of Fig. 2；
Fig. 4 is the upward view of Fig. 2.
In figure：1 is iron core, and 2 be secondary winding, and 3 be first winding, and 4 be secondary connection lead, and 5 be secondary connection end
Son, 6 be capacitance leading-out terminal, and 7 be annular capacitor bleeder mechanism, and 8 be seal groove, and 9 be separate terminal enclosure, and 10 be installation inserts, and 11 are
Sprayed-on Al layer, 12 be insulator.
Specific implementation mode
In order to keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in detail in example.
As shown in Figs 1-4, a kind of band busbar wall-penetrating type current transformer provided by the utility model, including insulator 12 and
Iron core 1, secondary winding 2, first winding 3 and the annular capacitor bleeder mechanism 7 being encapsulated in insulator 12, wherein iron core 1 are ring
Shape structure, secondary winding 2 are wound on iron core 1, and secondary winding 2 and annular capacitor bleeder mechanism 7 are set in first winding 3
On primary conductive bar, the secondary connection lead 4 being connect with secondary winding 2 and the capacitance being connect with annular capacitor bleeder mechanism 7 are defeated
Go out terminal 6 to be drawn by insulator 12, the both ends of first winding 3 are the circle contact shape for plug.
Insulator 12 is to be poured into a mould first winding 3, secondary winding 2 and and annular capacitor partial pressure dress using epoxide resin vacuum
It sets 7 and is encapsulated in internal L-type integral structure, there is enough insulation.
Further, secondary connection lead 4 is drawn by the bottom of insulator 12 and end is connected with secondary wiring terminals 5,
The outside of secondary wiring terminals 5 is equipped with separate terminal enclosure 9.The end of incoming cables of first winding 3 is placed in the sealing that 12 end of insulator is equipped with
In slot 8, capacitance leading-out terminal 6 is set on the side wall of insulator 12.
A capacitance body is formed between annular capacitor bleeder mechanism 7 and first winding 3, is exported by capacitance leading-out terminal 6
Give cabinet charged display device.
Further, the outer surface of insulator 12 is equipped with sprayed-on Al layer 11, and the bottom of insulator 12 is equipped with installation inserts 10.
The utility model, using electromagnetic conversion principle, enables secondary current accurately reflected measurement one using iron core is rolled
The situation of change of primary current is transferred to secondary measurement and control device；It is matched with electrification display with capacitance dividing voltage supply
The operating condition of cabinet can accurately be reacted, while being used as electric current, electric energy measurement and relay protection.
The utility model is mainly used for 12kV solid insulation withdrawing switch apparatus, realizes two kinds of functions：Major loop closes
Conjunction and isolation features.Component of solid switch equipment is hermetically sealed in epoxy casting body, and uses pole technology, will
The combinations such as vacuum interrupter, main conductive circuit, insulating supporting are integral, and realize all insulation, hermetically sealed, non-maintaining knot
Structure, while also realizing unit replaceable structure.Intelligent subscriber demarcation switch is the capital equipment in urban power network automation distribution network,
It is installed on distribution line and the boundary position of user, the Fault Isolation occurred in user circle can be opened, prevent a fault pervasion
Outdoor high-voltage switch on to system line, it is final to improve power supply reliability and power supply quality.The utility model uses asphalt mixtures modified by epoxy resin
Fat vacuum casting insulating forms, have it is small, simple in structure, creepage distance is big, easy-to-connect, insulation it is reliable, flexible for installation,
The higher feature of easy care, economy.
The foregoing is merely the embodiments of the utility model, are not intended to limit the scope of protection of the utility model.It is all
Any modification, equivalent substitution and improvements made within spirit of the present utility model and principle, extension etc., are all contained in this reality
With in novel protection domain.
Claims (8)
1. a kind of band busbar wall-penetrating type current transformer, which is characterized in that including insulator (12) and be encapsulated in the insulator
(12) iron core (1), secondary winding (2), first winding (3) in and annular capacitor bleeder mechanism (7), wherein iron core (1) are ring
Shape structure, the secondary winding (2) are wound on the iron core (1), the secondary winding (2) and annular capacitor bleeder mechanism
(7) it is set on the primary conductive bar of the first winding (3), the secondary connection lead being connect with the secondary winding (2)
(4) and with the annular capacitor bleeder mechanism (7) the capacitance leading-out terminal (6) connecting is drawn by the insulator (12), institute
The both ends for stating first winding (3) are the circle contact shape for plug.
2. band busbar wall-penetrating type current transformer according to claim 1, which is characterized in that the insulator (12) is to adopt
First winding (3), secondary winding (2) and annular capacitor bleeder mechanism (7) are encapsulated in internal L with epoxide resin vacuum cast
Type integral structure.
3. band busbar wall-penetrating type current transformer according to claim 2, which is characterized in that the bottom of the insulator (12)
Portion is equipped with installation inserts (10).
4. band busbar wall-penetrating type current transformer according to claim 2, which is characterized in that the secondary connection lead
(4) it is drawn by the bottom of the insulator (12) and end is connected with secondary wiring terminals (5).
5. band busbar wall-penetrating type current transformer according to claim 4, which is characterized in that the secondary wiring terminals
(5) outside is equipped with separate terminal enclosure (9).
6. band busbar wall-penetrating type current transformer according to claim 2, which is characterized in that the capacitance leading-out terminal
(6) it is set on the side wall of the insulator (12).
7. band busbar wall-penetrating type current transformer according to claim 2, which is characterized in that the first winding (3)
End of incoming cables is placed in the seal groove (8) that the insulator (12) end is equipped with.
8. band busbar wall-penetrating type current transformer according to claim 1, which is characterized in that outside the insulator (12)
Surface is equipped with sprayed-on Al layer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721648713.4U CN207800341U (en) | 2017-12-01 | 2017-12-01 | A kind of band busbar wall-penetrating type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721648713.4U CN207800341U (en) | 2017-12-01 | 2017-12-01 | A kind of band busbar wall-penetrating type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207800341U true CN207800341U (en) | 2018-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721648713.4U Active CN207800341U (en) | 2017-12-01 | 2017-12-01 | A kind of band busbar wall-penetrating type current transformer |
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| Country | Link |
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| CN (1) | CN207800341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986953A (en) * | 2020-07-30 | 2020-11-24 | 许继集团有限公司 | Primary and secondary deep fusion solid-sealed polar pole |
-
2017
- 2017-12-01 CN CN201721648713.4U patent/CN207800341U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986953A (en) * | 2020-07-30 | 2020-11-24 | 许继集团有限公司 | Primary and secondary deep fusion solid-sealed polar pole |
| CN111986953B (en) * | 2020-07-30 | 2022-08-12 | 许继集团有限公司 | Primary and secondary deep fusion solid-sealed polar pole |
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