CN207516423U - Single-phase capacitance formula branch pressure voltage sensor - Google Patents
Single-phase capacitance formula branch pressure voltage sensor Download PDFInfo
- Publication number
- CN207516423U CN207516423U CN201721337821.XU CN201721337821U CN207516423U CN 207516423 U CN207516423 U CN 207516423U CN 201721337821 U CN201721337821 U CN 201721337821U CN 207516423 U CN207516423 U CN 207516423U
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- Prior art keywords
- capacitance
- low
- pressure
- pressure end
- lead
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Abstract
Single-phase capacitance formula branch pressure voltage sensor, including insulator, one more side and secondary side.Primary side once high-voltage capacitance.Secondary side has secondary low-voltage capacitance.Terminal cover connects the high-pressure side of a capacitance.The beginning of a capacitance low-pressure end lead-out wire is drawn in the low-pressure end of capacitance and the series connection of secondary capacitor high voltage end, centre.Secondary capacitance low-pressure end connects grounding nut by secondary capacitance low-pressure end lead, is secondary singal output terminal between the grounding nut lead of grounding nut and the end of a capacitance low-pressure end lead-out wire.This type product uses principle of capacitive divider, and this product is designed for complex environment and electric condition, and product outer layer is by anti-aging casting forming of silicon rubber.This type voltage sensor can provide small-signal for secondary device and directly dock, and machine volume reduces 70% than conventional electromagnetic voltage transformer, make circuit installation and repairing more convenient.
Description
Technical field
The utility model belongs to sensor field, more particularly to single-phase capacitance formula branch pressure voltage sensor.
Background technology
With the development of electric system, the increasingly variation of productive power demand, the induction voltage transformer of tradition is
Through being not suitable with requirement of the present secondary device to signal, volume also can not again carry out significantly on the basis of electromagnetic induction principle
Diminution.
Utility model content
The purpose of this utility model is to provide single-phase capacitance formula branch pressure voltage sensor, and small letter can be provided for secondary device
It number directly docks, volume smaller.
The technical solution adopted is that：
Single-phase capacitance formula branch pressure voltage sensor, including insulator, one more side and secondary side.
Technical points are：
Primary side includes a capacitance.Secondary side includes secondary capacitance.
Insulator head is equipped with a terminal cover, and once capacitance beginning installation bolt is fixed in a terminal cover.Once
Terminal cover connects the high-pressure side of a capacitance.
The low-pressure end of capacitance and the series connection of secondary capacitor high voltage end draw capacitance low-pressure end lead-out wire intermediate
Beginning.Secondary capacitance low-pressure end connects grounding nut, the grounding nut lead of grounding nut by secondary capacitance low-pressure end lead
It is secondary singal output terminal between the end of a capacitance low-pressure end lead-out wire.
Primary side is high-pressure side, and secondary side is low-pressure side.
This voltage sensor can be that 10kV controller switching equipments use, as 10kV single-phase capacitances formula branch pressure voltage sensor.Skill
Art parameter：Model：JDEF-10, voltage ratio：The √ 3V of 10/ √, 3 kV/3.25, accuracy class：0.5, rated output capacity：2k
Ω, frequency：50Hz.
It the advantage is that：
This type product uses principle of capacitive divider, and this product is designed for complex environment and electric condition, product outer layer by
Anti-aging casting forming of silicon rubber.This type voltage sensor can provide small-signal for secondary device and directly dock, whole
Machine volume ratio conventional electromagnetic voltage transformer reduces 70%, only the 30% of conventional electromagnetic voltage transformer volume, makes line
Road installation and repairing is more convenient.
Description of the drawings
Fig. 1 is the sectional view of the utility model.
Fig. 2 is the external structure schematic diagram of the utility model.
It is the terminal cover 2, one times of a capacitance beginning installation bolt 1, one time capacitance 3, silicone rubber insulation layer 4, jacket casing 5, primary
Capacitance low-pressure end lead-out wire 6, secondary capacitance 7, secondary capacitance low-pressure end lead-out wire 8, grounding nut 9, secondary singal output terminal 10,
Insulator 11, grounding nut lead 12.
Specific embodiment
Single-phase capacitance formula branch pressure voltage sensor, including insulator 11, one more side and secondary side.
Primary side includes a capacitance 3.Secondary side includes secondary capacitance 7.
11 top of insulator is equipped with a terminal cover 2, and once capacitance beginning installation bolt 1 is fixed in a terminal cover 2
(also having M8 nuts).Terminal cover 2 connects the high-pressure side of a capacitance 3.
Low-pressure end and 7 high-pressure side of secondary the capacitance series connection of capacitance 3, a capacitance low-pressure end lead-out wire is drawn in centre
6 beginning.Secondary 7 low-pressure end of capacitance connects grounding nut 9, the ground connection spiral shell of grounding nut 9 by secondary capacitance low-pressure end lead 8
It is secondary singal output terminal 10 between the end of female lead 12 and a capacitance low-pressure end lead-out wire 6.
Capacitance 3 and 7 adoptable series system of secondary capacitance are：
The low-pressure end (lower end of a capacitance 3 as shown in Figure 1) of capacitance 3 is equipped with jacket casing 5, the height of secondary capacitance 7
Screw rod in pressure side (upper end of secondary capacitance 7 as shown in Figure 1) is connected with the inner hole thread of jacket casing 5.
The beginning of a capacitance low-pressure end lead-out wire 6 is fixed between screw rod on the high-pressure side of jacket casing 5 and secondary capacitance 7,
The beginning of capacitance low-pressure end lead-out wire 6 is tightened by the screw rod on the high-pressure side of jacket casing 5 and secondary capacitance 7.
The low-pressure end of secondary capacitance 7 connects grounding nut 9 by secondary capacitance low-pressure end lead 8, and grounding nut 9 is by connecing
Ground nut lead 12 connects secondary singal output terminal 10 together with the end of a capacitance low-pressure end lead-out wire 6.
Secondary capacitance low-pressure end is also used as secondary capacity earth exit simultaneously.
Capacitance 3,5, capacitance low-pressure end lead-out wires 6 of jacket casing, secondary capacitance 7, secondary capacitance low-pressure end lead-out wire
8th, grounding nut 9 and grounding nut lead 12 are arranged in insulator 11.
The bottom of grounding nut 9 is arranged on the lower surface of insulator 11 for connecting grounded parts.
Primary side is high-pressure side, and a capacitance 3 is high-voltage capacitance.Secondary side is low-pressure side, and secondary capacitance 7 is low tension
Hold.
Insulator 11 is epoxy resin housing, and outside is equipped with silicone rubber insulation layer 4, and 4 outside of silicone rubber insulation layer is equipped with more
A umbrella side.
One time capacitance 3 is high-voltage capacitance, and ceramic condenser can be used and be depressured as high-voltage capacitance.
Secondary capacitance 7 is low-voltage capacitance, and ceramic condenser can be used, and reduces influence of the temperature to secondary voltage.
By the ratio between voltage secondary capacitance, U are determined equal to capacitance inverse ratio1/U2=C2/C1。
Two second part are low-pressure section, carry out low-voltage signal acquisition.High-voltage capacitance is 10kV capacitances, and low-voltage capacitance is
2.17V capacitance.
Line side voltage guides to a capacitance beginning installation bolt 1 and connects a capacitance 3 by a terminal cover 2
（High-voltage capacitance）High-pressure side, a capacitance 3（High-voltage capacitance）Low-pressure end and secondary capacitance 7（Low-voltage capacitance）High-pressure side string
A capacitance low-pressure end lead-out wire 6 is drawn in connection, centre, and secondary 7 low-pressure end of capacitance connects secondary capacitance low-pressure end lead-out wire 8 and passes through
Grounding nut 9 is grounded, and low voltage signal is by the grounding nut lead 12 of grounding nut 9 and 6 end of capacitance low-pressure end lead-out wire
Secondary singal output terminal 10 is drawn out between end to export.
Claims (6)
1. single-phase capacitance formula branch pressure voltage sensor, including insulator (11), one more side and secondary side；It is characterized in that：
Primary side includes a capacitance (3)；Secondary side includes secondary capacitance (7)；
A terminal cover (2) is equipped at the top of insulator (11), once capacitance beginning installation bolt is fixed on a terminal cover (2)
(1)；Terminal cover (2) connects the high-pressure side of a capacitance (3)；
Low-pressure end and secondary capacitance (7) high-pressure side series connection of capacitance (3), a capacitance low-pressure end lead-out wire is drawn in centre
(6) beginning；Secondary capacitance (7) low-pressure end connects grounding nut (9) by secondary capacitance low-pressure end lead-out wire (8), is grounded spiral shell
It is secondary singal output terminal between female grounding nut lead (12) of (9) and the end of a capacitance low-pressure end lead-out wire (6)
(10)；
Capacitance (3), jacket casing (5), a capacitance low-pressure end lead-out wire (6), secondary capacitance (7), secondary capacitance low-pressure end draw
Outlet (8), grounding nut (9) and grounding nut lead (12) are arranged in insulator (11).
2. single-phase capacitance formula branch pressure voltage sensor according to claim 1, it is characterised in that：
Insulator (11) is epoxy resin housing.
3. single-phase capacitance formula branch pressure voltage sensor according to claim 1, it is characterised in that：
Insulator (11) is equipped with silicone rubber insulation layer (4) for outside.
4. single-phase capacitance formula branch pressure voltage sensor according to claim 3, it is characterised in that：
Multiple umbrella sides are equipped on the outside of silicone rubber insulation layer (4).
5. single-phase capacitance formula branch pressure voltage sensor according to claim 1, it is characterised in that：
Capacitance (3) is ceramic condenser, and secondary capacitance (7) is ceramic condenser.
6. single-phase capacitance formula branch pressure voltage sensor according to claim 1, it is characterised in that：
The low-pressure end of capacitance (3) is equipped with jacket casing (5), the endoporus of screw rod and jacket casing (5) on the high-pressure side of secondary capacitance (7)
It is fixedly connected；
The beginning of a capacitance low-pressure end lead-out wire (6) is also fixed between screw rod on the high-pressure side of jacket casing (5) and secondary capacitance (7)
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721337821.XU CN207516423U (en) | 2017-10-18 | 2017-10-18 | Single-phase capacitance formula branch pressure voltage sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721337821.XU CN207516423U (en) | 2017-10-18 | 2017-10-18 | Single-phase capacitance formula branch pressure voltage sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207516423U true CN207516423U (en) | 2018-06-19 |
Family
ID=62534687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721337821.XU Expired - Fee Related CN207516423U (en) | 2017-10-18 | 2017-10-18 | Single-phase capacitance formula branch pressure voltage sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207516423U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677866A (en) * | 2017-10-18 | 2018-02-09 | 湖北大二互科技股份有限公司 | Single-phase capacitance formula branch pressure voltage sensor |
| CN109254190A (en) * | 2018-11-20 | 2019-01-22 | 江苏思源赫兹互感器有限公司 | A kind of residual voltage sensor based on capacitance partial pressure |
-
2017
- 2017-10-18 CN CN201721337821.XU patent/CN207516423U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677866A (en) * | 2017-10-18 | 2018-02-09 | 湖北大二互科技股份有限公司 | Single-phase capacitance formula branch pressure voltage sensor |
| CN109254190A (en) * | 2018-11-20 | 2019-01-22 | 江苏思源赫兹互感器有限公司 | A kind of residual voltage sensor based on capacitance partial pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180619 Termination date: 20191018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |