CN2259019Y - Fuse changeable knife switch - Google Patents
Fuse changeable knife switch Download PDFInfo
- Publication number
- CN2259019Y CN2259019Y CN 95218464 CN95218464U CN2259019Y CN 2259019 Y CN2259019 Y CN 2259019Y CN 95218464 CN95218464 CN 95218464 CN 95218464 U CN95218464 U CN 95218464U CN 2259019 Y CN2259019 Y CN 2259019Y
- Authority
- CN
- China
- Prior art keywords
- fuse
- plug
- strip
- overcurrent
- knife switch
- 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 relates to a fuse changeable knife switch, which is in sequence composed of an input wiring terminal arranged on a base, a jaw (3), an energizing knife switch, a starting overcurrent fuse, a jaw (4), a running fuse, a starting overcurrent knife switch, and an output wiring terminal, wherein, the starting overcurrent fuse and the running fuse are connected in series, and the closed starting overcurrent knife switch and the running fuse are connected in parallel. The utility model not only keeps the protective function of the switch and the running, but also has the function of starting overcurrent protection. The utility model has the advantages of convenient and accurate operation, safety, long service life, and easy maintenance.
Description
The utility model is that a kind of electric current that relates to passes through the meltability material, makes the protective device of current interruptions when electric current is excessive owing to the fusing of meltability material.
Existing knife switch; generally has only one group of fuse; because electric motor starting and running current differ greatly; can not correctly select fuse; do not have the effect of protection motor; therefore other overcurrent protective device must be installed; the electric motor protecting knife switch that the CN210025U patent provides; it is on same knife switch; set up one group big fuse and done to start overcurrent protection; realized the over current of motor full guard; but because it is to form different angles control cutting blade with support when closing a floodgate by knife switch and whether contacting of fixed blade reaches the break-make of controlling the startup fuse; adopt the plug-in strip operating personnel of this structure often to be difficult to control the angle of combined floodgate, or owing to cutting blade and fixed blade often use loose contact etc. to cause not having protective effect.
The purpose of this utility model provides a kind of characteristic that had both maintained common plug-in strip, can play electric motor starting process and running protective effect again, and easy to operate preparation, safety durable, knife switch easy to maintenance.
The purpose of this utility model realizes as follows; its be between the energising plug-in strip of common knife switch and operation fuse, set up one group with move the startup overcurrent fuse that fuse becomes coupled in series; and above the operation fuse, establish one and becomes the overcurrent plug-in strip formation of starting shipment in parallel when closing a floodgate with the operation fuse, the startup plug-in strip plays the startup overcurrent protection.
Adopt the knife switch of said structure, both kept the characteristic of common knife switch, can play the electric motor starting overcurrent protection again, and easy to operate preparation, safety durable, easy to maintenance.
Description of drawings:
The variable knife switch of Fig. 1 fuse removes to cover schematic diagram
1 lead-in clamp, 2 energising plug-in strips, 3,4 jaws
5 start overcurrent plug-in strip 6 operation fuses 7 bases
8 start overcurrent fuse 9 output wiring terminals
Below in conjunction with accompanying drawing the utility model is further specified: embodiment such as Fig. 1, on base 7, install lead-in clamp 1, energising plug-in strip 2, jaw 3,4 starts overcurrent plug-in strip 5, and operation fuse 6 starts overcurrent fuse 8, output wiring terminal 9.Start overcurrent fuse 8 and 6 one-tenth coupled in series of operation fuse, in parallel when starting overcurrent plug-in strip 3 combined floodgates with 6 one-tenth of operation fuses; Because it is all charged to start overcurrent plug-in strip 3 in electric motor starting and the running, so its charged part need adopt totally-enclosed measure.
During use; electric current is connected on the lead-in clamp 1, and the input lead of motor is connected on the output wiring terminal 9, closes earlier to start overcurrent plug-in strip 5; make and start 6 one-tenth parallel connections of overcurrent plug-in strip 5 and operation fuse; the energising plug-in strip 2 that closes again starts, and starts post-tensioning and starts overcurrent plug-in strip 5 down; at this moment move fuse 6 and start 8 one-tenth series connection of overcurrent fuse; 6 operations of operation fuse overcurrent protection starts overcurrent fuse 8 and plays the lead effect, has promptly realized the purpose of this utility model.
Claims (1)
1, the variable knife switch of a kind of fuse is made up of base, input and output binding post, jaw, plug-in strip and fuse; It is characterized in that plug-in strip have energising plug-in strip and startup overcurrent plug-in strip, jaw have two corresponding with plug-in strip respectively, fuse has the overcurrent fuse of startup and operation fuse, and the arrangement of member on base is lead-in clamp, jaw (3), energising plug-in strip successively, starts overcurrent fuse, jaw (4), operation fuse, starts the overcurrent plug-in strip and export fuse wire column fully; Jaw (4) is interchangeable with the position that starts the overcurrent plug-in strip; The operation fuse becomes to be connected in series with the startup overcurrent fuse, and the startup plug-in strip during combined floodgate becomes to be connected in parallel with the operation fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95218464 CN2259019Y (en) | 1995-07-31 | 1995-07-31 | Fuse changeable knife switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95218464 CN2259019Y (en) | 1995-07-31 | 1995-07-31 | Fuse changeable knife switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2259019Y true CN2259019Y (en) | 1997-08-06 |
Family
ID=33866993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95218464 Expired - Fee Related CN2259019Y (en) | 1995-07-31 | 1995-07-31 | Fuse changeable knife switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2259019Y (en) |
-
1995
- 1995-07-31 CN CN 95218464 patent/CN2259019Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |