CN204497126U - Overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer - Google Patents
Overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer Download PDFInfo
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- CN204497126U CN204497126U CN201520163987.9U CN201520163987U CN204497126U CN 204497126 U CN204497126 U CN 204497126U CN 201520163987 U CN201520163987 U CN 201520163987U CN 204497126 U CN204497126 U CN 204497126U
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- Prior art keywords
- distribution transformer
- switch
- utility
- overfiring
- isolation switch
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- 238000002955 isolation Methods 0.000 claims abstract description 26
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- ALKZAGKDWUSJED-UHFFFAOYSA-N dinuclear copper ion Chemical compound [Cu].[Cu] ALKZAGKDWUSJED-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to a kind of overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer, it is characterized in that: comprise DW type low voltage isolation switch body, and adopting RTO type cartridge fuse to be safety plate, described Switch main body and described safety plate pass through double-fracture contact, the additional spring leaf of incision position.Application of the present utility model, improves the cycle of operation of existing equipment, significantly reduces equipment operation and maintenance cost; Effectively solve former 10kV and become platform secondary isolation switch oxidation fault, decrease and become platform frequency of power cut, reduce user and report number of times for repairment, alleviate the workload of maintenance personal; The utility model structure is simple, practical, safe and reliable, solves 10kV distribution transformer in the operating practical problem of equipment, has very strong application value.
Description
technical field:
The utility model relates to a kind of transformer isolation switch, particularly relates to a kind of overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer.
background technology:
Existing low voltage isolation switch fuse all adopts aluminium safety plate, and Switch main body material is copper, and both adopt screw shimming to compress connection.Due to coastal area, in air, saline and alkaline density is large, has higher corrosivity to metal, make change platform secondary isolation switch security sheet and secondary isolation make and break contact very easily copper aluminum oxidation, cause loose contact, therefore become platform fault outage and report rate for repairment and can be in any more, had a strong impact on power supply reliability.Statistical history data, what distribution repairing class of power supply branch of Donggang City received every year reports fault for repairment average more than 1500 times, wherein effectively report about 700 times for repairment, and become platform report for repairment occupy imitate report for repairment about 60%, and in change platform reports for repairment, have 85% to cause because low voltage isolation switch safety plate is oxidized loose contact, frequent owing to reporting number of times for repairment, repairman is the requirement reaching service promise, all day comes and goes everywhere on the road of maintenance, the working strength of every day is very large, for present situation, we feel that 10kV distribution becomes device platform low voltage isolation switch fusing point and must transform, must change can not, in the urgent need under existence conditions, effective solution low voltage isolation switch fusing point problem of oxidation.
summary of the invention:
for solving above-mentioned deficiency of the prior art, the utility model discloses a kind of overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer, and object is that solving coastal area affects by air ambient, easily produces the problem of low voltage isolation switch fusing point oxidation.
The utility model is realized by following technological means:
Overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer, is characterized in that: comprise DW type low voltage isolation switch body, and adopts RTO type cartridge fuse to be safety plate, and described Switch main body and described safety plate pass through double-fracture contact, the additional spring leaf of incision position.
Advantage of the present utility model and beneficial effect are: the utility model is on the basis of existing change platform secondary isolation switch, retain its operation principle, improvement safety plate and secondary isolation switch contact divide, change Solder for Al-Cu Joint Welding contact for copper-copper contact, adopt melt of good performance to replace original aluminium fuse piece, reduce and cause isolating switch switch scaling loss and change platform to have a power failure because of copper aluminum oxidation.Change former screw pressing single contact, be copper spring leaf double-fracture, add isolating switch reliability of operation, increase the service life.Application of the present utility model, improves the cycle of operation of existing equipment, significantly reduces equipment operation and maintenance cost; Effectively solve former 10kV and become platform secondary isolation switch oxidation fault, decrease and become platform frequency of power cut, reduce user and report number of times for repairment, alleviate the workload of maintenance personal; The utility model structure is simple, practical, safe and reliable, solves 10kV distribution transformer in the operating practical problem of equipment, has very strong application value.
accompanying drawing illustrates:
Fig. 1 is the utility model structural representation.
In figure: 1, low voltage isolation switch body, 2, RTO type cartridge fuse, 3, switch fracture
embodiment:
embodiment:
Overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer, is characterized in that: comprise DW type low voltage isolation switch body 1, and adopts RTO type cartridge fuse 2 for safety plate, and described Switch main body and described safety plate pass through double-fracture 3 contact, the additional spring leaf of incision position.
The utility model is applied to power supply branch of Donggang City of electric company, Dandong, Liaoning Province to carry out transforming secondary isolation switch in 5 Ge Tai districts.
Know-why:
This difficult point improved is at melt and low voltage isolation switch contact junction surface, DW type low voltage isolation switch size according to existing military service has selected RTO type cartridge fuse (see figure), substitute original aluminium safety plate, RTO type cartridge fuse terminal is copper, body is porcelain knob good seal performance, avoid fuse to contact with air, effectively reduce oxidization time. and according to the structure of the copper terminal of RTO type cartridge fuse, change low voltage isolation switch single contact for two copper fracture, add isolating switch reliability of operation, increase the service life, fracture is additional shoots reed, its cartridge fuse terminal is closely engaged, it is overheated to prevent, effectively solve copper aluminum oxidation problem.This design is applicable to 10kV transformer secondary low voltage isolation switch, is effective substitute products of the DW type low voltage isolation switch of existing military service, can change melt, former switch pedestal can be utilized to carry out large area transformation according to the amount of capacity of transformer.
Technical characterstic:
1, Switch main body: adopt former DW type low voltage isolation switch body, reduces improvement cost.
2, switch fracture: change former screw pressing single contact, is copper spring leaf double-fracture, adds isolating switch reliability of operation, increase the service life.
3, melt: selected RTO type cartridge fuse to replace original aluminium safety plate.
By transformation, simultaneously to secondary isolation switch monitoring, the thermometric after improving, no abnormal situation, through its effect compared with history same period, failure rate reduces greatly, improves power supply reliability.
The application of this achievement, improves the cycle of operation of existing equipment, significantly reduces equipment operation and maintenance cost; Every year can cost saving 6000 yuan according to branch company of reckoning Donggang City
,during power supply reliability loss reduction by 80 family.
The application of this achievement, effectively solves former 10kV and becomes platform secondary isolation switch oxidation fault, decrease and become platform frequency of power cut, reduce user and report number of times for repairment, alleviate the workload of maintenance personal;
By the application of this achievement, improve urban electricity supply reliability, effectively raise the image of enterprise, cash the promise of enterprise to society.
This one-tenth fruit structure is simple, practical, safe and reliable, solves 10kV distribution transformer in the operating practical problem of equipment, has very strong application value.
Claims (1)
1. overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer, is characterized in that: comprise DW type low voltage isolation switch body, and adopts RTO type cartridge fuse to be safety plate, and described Switch main body and described safety plate pass through double-fracture contact, the additional spring leaf of incision position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163987.9U CN204497126U (en) | 2015-03-23 | 2015-03-23 | Overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163987.9U CN204497126U (en) | 2015-03-23 | 2015-03-23 | Overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497126U true CN204497126U (en) | 2015-07-22 |
Family
ID=53576421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520163987.9U Active CN204497126U (en) | 2015-03-23 | 2015-03-23 | Overfiring-proof enhancement mode low-voltage isolating switch of distribution transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204497126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681348A (en) * | 2015-03-23 | 2015-06-03 | 国网辽宁省电力有限公司丹东供电公司 | Burnout-preventing enhanced low-voltage isolation switch of power distribution transformer |
-
2015
- 2015-03-23 CN CN201520163987.9U patent/CN204497126U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681348A (en) * | 2015-03-23 | 2015-06-03 | 国网辽宁省电力有限公司丹东供电公司 | Burnout-preventing enhanced low-voltage isolation switch of power distribution transformer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |