CN201498292U - Combined type arrester - Google Patents
Combined type arrester Download PDFInfo
- Publication number
- CN201498292U CN201498292U CN2009203067544U CN200920306754U CN201498292U CN 201498292 U CN201498292 U CN 201498292U CN 2009203067544 U CN2009203067544 U CN 2009203067544U CN 200920306754 U CN200920306754 U CN 200920306754U CN 201498292 U CN201498292 U CN 201498292U
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- Prior art keywords
- arrester
- core body
- unit
- tension cable
- combined
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Abstract
The utility model discloses a combined type arrester which comprises four arrester units and a support saddle used for fixing and installing the four arrester units. Each arrester unit comprises a core body and a high voltage cable passing through the core body; connection terminals are arranged at the two ends of the high voltage cable of each arrester unit; the four connection terminals at the bottom ends of the four arrester units are connected in parallel; any three of the four connection terminals at the upper ends are connected with the triple-phase line of a protected electrical installation; and the residual connection terminal is connected with the earth line. The combined type arrester has the advantages as follows: the connection is simple; a user is dispensed with the consideration to phase distance and creepage distance; the arrester can be flexibly installed according to the field situation; the connection mistake cannot happen; the sealing performance and the electrical insulation performance are good; the dielectric strength is high; the electrical erosion is resisted; and the aging resistance is possessed.
Description
Technical field
The utility model relates to a kind of thunder and lightning and switching overvoltage protective device of electric equipment, particularly a kind of combined arrester.
Background technology
The electric equipment that moves in the electric power system is bearing various overvoltage, and lightning overvoltage and inner switching overvoltage from the outside are arranged.Because the arc extinguishing of vacuum switch is very competent, can cause special switching overvoltage when cut-offfing, and causes high-voltage motor insulated puncture, the loop transformer fault, even cause switch cubicle self damage to be burnt.Lightning arrester is the indispensable element that the protection electric equipment is not encroached on electric equipment by outside lightning overvoltage and internal system switching overvoltage.Though traditional lightning arrester can over-voltage; but can only be connected between the phase and ground of electric equipment, can not realize alternate protection, two alternate overvoltage protections will be through the series connection of two lightning arresters; residual voltage exceeds 1 times than relatively, be unfavorable for the phase insulation protection of electric equipment.
Chinese patent literature CN 2629310Y discloses " a kind of three phase combined over-voltage protector "; it comprises four capacitance-resistance valve overvoltage protection elements; each element comprises the control gap that is sealed with resistor disc; 4 element one ends link together; 3 the top other end inserts A, B, C triple line respectively, and one the following other end inserts ground wire.Though it can to protected electric equipment finish grab mutually and grab mutually mutually between overvoltage protection, one side, the space that its structure occupies is bigger, mode of connection is fixed, and is easy to generate misconnection; On the other hand, gap and resistor disc are placed in the cavity, easily produce that sealing is made moist, the worker is put interference, galvanic corrosion, problem such as aging.
The utility model content
The purpose of utility model provides that a kind of mode of connection is simple, the combined arrester of good seal performance.
The technical scheme that realizes the utility model purpose is a kind of combined arrester, comprises 4 unit of an arrester and is used for fixing the bearing that 4 unit of an arrester are installed; Described each unit of an arrester comprises core body and passes the high-tension cable of core body; The high-tension cable two ends of described each unit of an arrester are provided with binding post; 4 binding posts of the bottom of 4 unit of an arrester connect together; any 3 triple lines that insert protected electric equipment in 4 binding posts of upper end, a remaining binding post is connected with ground wire.
Gap and resistor disc in the core body of described unit of an arrester seal respectively.
The outside socket insulating case of the core body of described unit of an arrester, the core body end is provided with the connection screw; Described high-tension cable end has threaded joints, and the threaded joints of high-tension cable passes insulating case and is rotated with in the connection screw of core body.
The core body upper/lower terminal center of described unit of an arrester is equipped with the connection screw.
The insulating case of described unit of an arrester is that silastic material is made, and its top is provided with screw-shaped cable protection portion, is provided with the through hole that can allow high-tension cable pass in the cable protection portion.
The good effect that the utlity model has: (1) the utility model combined arrester connection is simple, need not to consider phase spacing and creepage distance, can install flexibly according to field condition, the wrong situation can not occur.
(2) do not have cavity around the utility model combined arrester body resistance, core body adopts the integral die moulding process, and sealing property is reliable.Solved that the insoluble sealing of product is made moist, explosion-proof, worker is put interference, galvanic corrosion, problem such as aging, and the phenomenon such as aging of metal oxide branch units can product integral body not occur and fault involves system again, but and the unit safeguard, save cost.
(3) high-tension cable of the unit of an arrester of the utility model combined arrester, core body and insulating case are the split manufacturing, fit together then, locate simple and conveniently, and replacement part separately reduces maintenance cost.Select for use fire-retardant, ageing-resistant silicon rubber to do sheathing material, it is on the basis of independent sealing unit at inner each element, and the outside seals once more, piece electrical good insulation preformance, dielectric strength height, anti-galvanic corrosion, ageing-resistant.
(4) high-tension cable of the unit of an arrester of the utility model combined arrester and core body be by being threaded, and be solid and reliable, lightning-arrest effective.
(5) the insulating case top of the unit of an arrester of the utility model combined arrester is provided with cable protection portion, can protect high-tension cable can not fracture in the local excessive bending, and is reasonable in design.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the utility model is described in further detail, wherein
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a kind of mode of connection schematic diagram of the present utility model.
Fig. 3 is the structural representation of unit of an arrester of the present utility model.
Label is as follows in the accompanying drawing:
Unit of an arrester 1, core body 11 connects screw 11-1, high-tension cable 12, threaded joints 12-1, insulating case 13, the 13-1 of cable protection portion, binding post 14; Bearing 2.
Embodiment
(embodiment 1)
See Fig. 1 and Fig. 3, the combined arrester of present embodiment comprises 4 unit of an arrester 1 and is used for fixing the bearing 2 that 4 unit of an arrester 1 are installed.
Each unit of an arrester 1 comprises core body 11 and passes the high-tension cable 12 of core body 11.The core body 11 outside socket insulating cases 13 of unit of an arrester 1, core body 11 upper/lower terminal centers are equipped with and connect screw 11-1; Described high-tension cable 12 ends have threaded joints 12-1, and the threaded joints 12 1 of high-tension cable 12 passes insulating case 13 and is rotated with in the connection screw 11-1 of core body 11.Insulating case 13 is made for silastic material, and its top is provided with the screw-shaped cable protection 13-1 of portion, is provided with the through hole that can allow high-tension cable 12 pass in the 13-1 of cable protection portion.
During production; earlier resistor disc in the core body 11 of unit of an arrester 1 is tied up curing; touch the core body 11 and the insulating case 13 of lightning arrester molded respectively again; the 13-1 of cable protection portion that then the threaded joints 12-1 of high-tension cable 12 ends is passed insulating case 13 is rotated with in the connection screw 11-1 of core body 11; again insulating case 13 is socketed on the core body 11; connect binding post 14 for the two ends of high-tension cable 12; 4 binding posts 14 of the bottom of 4 such unit of an arrester 1 are connected together; be fixed in the bearing 2,4 binding posts 14 of upper end are drawn the combined arrester that promptly constitutes present embodiment.
When practicality, can select any 3 binding posts of drawing 14 to insert the triple line of protected electric equipment, with remaining binding post 14 ground connection.As shown in Figure 2, first three can be connect A, B, C three-phase respectively, the 4th is electrically connected with ground wire D.Also can connect A, B, C three-phase respectively with first and third, four, second is electrically connected or the like with ground wire D, and mode of connection is simple, can wrong.
Claims (5)
1. combined arrester comprises 4 unit of an arrester (1) and is used for fixing the bearing (2) that 4 unit of an arrester (1) are installed; Described each unit of an arrester (1) comprises core body (11) and passes the high-tension cable (12) of core body (11); It is characterized in that: high-tension cable (12) two ends of described each unit of an arrester (1) are provided with binding post (14); 4 binding posts (14) of the bottom of 4 unit of an arrester (1) connect together; any 3 triple lines (A, B, C) that insert protected electric equipment in 4 binding posts (14) of upper end, a remaining binding post (14) is connected with ground wire (D).
2. combined arrester according to claim 1 is characterized in that: the core body (11) of described unit of an arrester (1) should seal.
3. combined arrester according to claim 1 is characterized in that: the outside socket insulating case of core body (11) (13) of described unit of an arrester (1), core body (11) end are provided with and connect screw (11-1); Described high-tension cable (12) end has threaded joints (12-1), and the threaded joints (12-1) of high-tension cable (12) passes insulating case (13) and is rotated with in the connection screw (11-1) of core body (11).
4. combined arrester according to claim 3 is characterized in that: core body (11) the upper/lower terminal center of described unit of an arrester (1) is equipped with and connects screw (11-1).
5. combined arrester according to claim 4; it is characterized in that: the insulating case (13) of described unit of an arrester (1) is made for silastic material; its top is provided with screw-shaped cable protection portion (13-1), is provided with the through hole that can allow high-tension cable (12) pass in the cable protection portion (13-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203067544U CN201498292U (en) | 2009-07-23 | 2009-07-23 | Combined type arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203067544U CN201498292U (en) | 2009-07-23 | 2009-07-23 | Combined type arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498292U true CN201498292U (en) | 2010-06-02 |
Family
ID=42441494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203067544U Expired - Fee Related CN201498292U (en) | 2009-07-23 | 2009-07-23 | Combined type arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201498292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922703A (en) * | 2018-06-11 | 2018-11-30 | 南方电网科学研究院有限责任公司 | Lightning arrester |
-
2009
- 2009-07-23 CN CN2009203067544U patent/CN201498292U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922703A (en) * | 2018-06-11 | 2018-11-30 | 南方电网科学研究院有限责任公司 | Lightning arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20120723 |