CN205565683U - Electric leakage protection device for power distribution network - Google Patents
Electric leakage protection device for power distribution network Download PDFInfo
- Publication number
- CN205565683U CN205565683U CN201620393469.0U CN201620393469U CN205565683U CN 205565683 U CN205565683 U CN 205565683U CN 201620393469 U CN201620393469 U CN 201620393469U CN 205565683 U CN205565683 U CN 205565683U
- Authority
- CN
- China
- Prior art keywords
- fuse
- contact
- power distribution
- distribution network
- copper stent
- 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
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052802 copper Inorganic materials 0.000 claims description 26
- 239000010949 copper Substances 0.000 claims description 26
- 210000000078 claw Anatomy 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 10
- 239000012774 insulation material Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 208000010727 head pressing Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses an electric leakage protection device for power distribution network, which comprises a housin, be equipped with current transformer in the casing, current transformer's top is equipped with the release, one side of release is equipped with ac contactor, ac contactor's top is equipped with the fuse, be equipped with the controller on the outer wall of casing, the top from the bottom up of controller is equipped with alarm indicator and buzzer siren in proper order, current transformer, release, ac contactor, fuse, alarm indicator, buzzer siren are connected with the controller electricity respectively. This electric leakage protection device for power distribution network, through setting up the connecting device on the fuse, the contact head of fusing element and contact inslot is pressed at thread groove internal rotation, ceramic -insulated press head to the screw of screwing for fusing element closely links to each other with the contact head, through the mode that the screw thread was screwed and is pressed, has avoided fusing element and contact head the separation to appear, thereby has avoided the consequence because of contact failure makes the fuse inefficacy.
Description
Technical field
The utility model relates to technical field of electric power, is specially a kind of power distribution network earth leakage protective device.
Background technology
Earth leakage protective device; it is called for short leakage switch; it is again RCCB; it is primarily used to when equipment generation leak current fault and to the personal electrical shock protection having fatal risk; there is overload and short-circuit protection function; can be used to protection circuit or the overload of motor and short circuit, also infrequently conversion as circuit can start and be used under normal circumstances.And the fuse part that to be earth leakage protective device important, when electric current exceedes setting, the heat that fuse produces with itself makes melt fuse, so that circuit disconnection, is able to protection circuit.The common cartridge fuse on fuse; it is that the contact head that the fusible link by its two ends is wrapped on contact box connects; and this mode is wound around the most firm; easily occur between fusible link with contact head separating; thus cause loose contact; fuse cannot play the effect of open circuit protection, so we have proposed a kind of power distribution network earth leakage protective device, solves above problem.
Utility model content
The purpose of this utility model is to provide a kind of power distribution network earth leakage protective device, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the utility model following technical scheme of offer: a kind of power distribution network earth leakage protective device, including housing, it is provided with current transformer in described housing, described current transformer be arranged over electrical apparatus release, the side of described electrical apparatus release is provided with A.C. contactor, the top of described A.C. contactor is provided with fuse, the outer wall of described housing is provided with controller, the top of described controller is sequentially provided with alarm lamp and buzzer siren from top to bottom, described current transformer, electrical apparatus release, A.C. contactor, fuse, alarm lamp, buzzer siren is electrically connected with the controller respectively.
Described fuse includes insulating part, the side of described insulating part top and bottom is respectively equipped with copper stent and lower copper stent, the top of described upper copper stent is provided with end of incoming cables, the bottom of described upper copper stent is provided with upper clipping claw, described upper copper stent is provided with upper attachment means away from one end of insulating part, the bottom of described lower copper stent is provided with leading-out terminal, the top of described lower copper stent is provided with lower claw, described lower copper stent is provided with lower connecting device away from one end of insulating part, connect by the fusible link on cartridge fuse is fixing between described upper attachment means and lower connecting device, one end of described upper clipping claw and one end of lower claw respectively with top and the bottom clamping of cartridge fuse.
Preferably, described upper clipping claw is identical with the structure of lower claw and is plastic insulation material.
Preferably, described upper attachment means is identical with the internal structure of lower connecting device.
Preferably, described upper attachment means includes contacting box, the side in described contact cassette bottom portion is provided with contiguous block, the side opening of described contiguous block is provided with contact groove, it is provided with contact head in described contact groove, the bottom of described contact box is provided with connecting line, one end of described connecting line is run through contiguous block and fixing with the side of contact head is connected, the opposite side in described contact cassette bottom portion is provided with and screws block, the described side opening screwing block is provided with thread groove, being socketed with screwing screw in described thread groove, one end of described screwing screw is fixedly connected with ceramic insulation press head.
Preferably, the volume of described ceramic insulation press head is less than the volume of contact groove.
Compared with prior art, the beneficial effects of the utility model are: this power distribution network earth leakage protective device, by arranging the attachment means on fuse, screwing screw rotates in thread groove, ceramic insulation press head pressing fusible link and the contact head contacted in groove, make fusible link closely coupled with contact head, by the way of screw thread screws pressing, avoid fusible link to occur separating with contact head, thus avoid the consequence making fuse lose efficacy because of loose contact, thus protect circuit, by arranging fuse, fuse is after exceeding setting a period of time according to electric current, Melt molten is made with the heat that himself produces, so that circuit disconnects, by arranging buzzing warning device and alarm lamp, make fuse can send alarm sounds when disconnecting circuit, facilitate artificial maintenance.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the utility model front view；
Fig. 2 is the cross-sectional view of the utility model fuse front view；
Fig. 3 is the cross-sectional view of attachment means front view on the utility model.
In figure: 1 housing, 2 current transformers, 3 electrical apparatus releases, 4 A.C. contactors, 5 fuses, 51 insulating parts, copper stent on 52,53 times copper stents, 54 upper clipping claws, attachment means on 55,551 contact boxes, 552 contiguous blocks, 553 contact grooves, 554 contact heads, 555 connecting lines, 556 screw block, 557 thread grooves, 558 screwing screws, 559 ceramic insulation press heads, 56 cartridge fuses, 6 controllers.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the utility model rather than whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of the utility model protection.
Refer to Fig. 1-3, a kind of technical scheme of the utility model offer: a kind of power distribution network earth leakage protective device, including housing 1, current transformer 2 it is provided with in housing 1, current transformer 2 be arranged over electrical apparatus release 3, the side of electrical apparatus release 3 is provided with A.C. contactor 4, the top of A.C. contactor 4 is provided with fuse 5, by arranging fuse 5, fuse 5 is after exceeding setting a period of time according to electric current, Melt molten is made with the heat that himself produces, so that circuit disconnects, reach the effect of protection circuit, the outer wall of housing 1 is provided with controller 6, the top of controller 6 is sequentially provided with alarm lamp and buzzer siren from top to bottom, current transformer 2, electrical apparatus release 3, A.C. contactor 4, fuse 5, alarm lamp, buzzer siren electrically connects with controller 6 respectively.
Fuse 5 includes insulating part 51, the side of insulating part 51 top and bottom is respectively equipped with copper stent 52 and lower copper stent 53, the top of upper copper stent 52 is provided with end of incoming cables, the bottom of upper copper stent 52 is provided with upper clipping claw 54, upper copper stent 52 is provided with upper attachment means 55 away from one end of insulating part 51, upper attachment means 55 includes contacting box 551, side bottom contact box 551 is provided with contiguous block 552, the side opening of contiguous block 552 is provided with contact groove 553, it is provided with contact head 554 in contact groove 553, the bottom of contact box 551 is provided with connecting line 555, one end of connecting line 555 is run through contiguous block 552 and fixing with the side of contact head 554 is connected, opposite side bottom contact box 551 is provided with and screws block 556, the side opening screwing block 556 is provided with
nullThread groove 557，Screwing screw 558 it is socketed with in thread groove 557，One end of screwing screw 558 is fixedly connected with ceramic insulation press head 559，By using ceramic insulation press head 559，Because the insulating property (properties) of ceramic material，Avoid screwing screw 558 to contact with direct fusible link，Because the conduction property of screwing screw 558，Voltage needed for making fusible link fusing with fusible link after contacting strengthens，So that fuse 5 loses effect，The volume of ceramic insulation press head 559 is less than the volume of contact groove 553，By arranging the attachment means 55 on fuse 5，Screwing screw 558 rotates in thread groove 557，Ceramic insulation press head 559 presses fusible link and the contact head 554 contacting groove in 553，Make fusible link closely coupled with contact head 554，By the way of screw thread screws pressing，Avoid fusible link to occur separating with contact head 554，Thus avoid the consequence making fuse 5 lose efficacy because of loose contact，Thus protect circuit，The bottom of lower copper stent 53 is provided with leading-out terminal，The top of lower copper stent 53 is provided with lower claw，Lower copper stent 53 is provided with lower connecting device away from one end of insulating part 51，Upper attachment means 55 is identical with the internal structure of lower connecting device，Connect by the fusible link on cartridge fuse 56 is fixing between upper attachment means 55 and lower connecting device，One end of upper clipping claw 54 and one end of lower claw respectively with top and the bottom clamping of cartridge fuse 56，Upper clipping claw 54 makes picking and placeing of cartridge fuse 56 more convenient with lower claw clamping cartridge fuse 56.
Operation principle: when power distribution network earth leakage protective device uses, by being stretched into by fusible link in contact groove 553, screws screwing screw 558 so that fusible link is pressed against on contact head 554 by screwing screw 558.
Embodiment the most of the present utility model, for the ordinary skill in the art, being appreciated that in the case of without departing from principle of the present utility model and spirit and these embodiments can carry out multiple change, revise, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a power distribution network earth leakage protective device, including housing (1), it is characterised in that: described housing
(1) be provided with current transformer (2) in, described current transformer (2) be arranged over electrical apparatus release (3),
The side of described electrical apparatus release (3) is provided with A.C. contactor (4), the top of described A.C. contactor (4)
Being provided with fuse (5), the outer wall of described housing (1) is provided with controller (6), described controller (6)
Top be sequentially provided with alarm lamp and buzzer siren from top to bottom, described current transformer (2),
Electrical apparatus release (3), A.C. contactor (4), fuse (5), alarm lamp, buzzer siren divide
Do not electrically connect with controller (6)；
Described fuse (5) includes insulating part (51), described insulating part (51) top and the side of bottom
Face is respectively equipped with copper stent (52) and lower copper stent (53), the top of described upper copper stent (52)
Being provided with end of incoming cables, the bottom of described upper copper stent (52) is provided with upper clipping claw (54), described upper copper stent
(52) one end away from insulating part (51) is provided with upper attachment means (55), described lower copper stent (53)
Bottom be provided with leading-out terminal, the top of described lower copper stent (53) is provided with lower claw, described lower copper stent
(53) one end away from insulating part (51) is provided with lower connecting device, described upper attachment means (55) and
Connect by the fusible link on cartridge fuse (56) is fixing between lower connecting device, described upper clipping claw (54)
One end and lower claw one end respectively with top and the bottom clamping of cartridge fuse (56).
A kind of power distribution network earth leakage protective device the most according to claim 1, it is characterised in that: described
Upper clipping claw (54) is identical with the structure of lower claw and is plastic insulation material.
A kind of power distribution network earth leakage protective device the most according to claim 2, it is characterised in that: described
Upper attachment means (55) is identical with the internal structure of lower connecting device.
A kind of power distribution network earth leakage protective device the most according to claim 2, it is characterised in that: described
Upper attachment means (55) includes contacting box (551), and the side of described contact box (551) bottom is provided with
Contiguous block (552), the side opening of described contiguous block (552) is provided with contact groove (553), described contact
Being provided with contact head (554) in groove (553), the bottom of described contact box (551) is provided with connecting line (555),
Contiguous block (552) is run through in one end of described connecting line (555) and the side with contact head (554) is fixed
Connecting, the opposite side of described contact box (551) bottom is provided with and screws block (556), described in screw block (556)
Side opening be provided with thread groove (557), be socketed with screwing screw (558) in described thread groove (557),
One end of described screwing screw (558) is fixedly connected with ceramic insulation press head (559).
A kind of power distribution network earth leakage protective device the most according to claim 4, it is characterised in that: described
The volume of ceramic insulation press head (559) is less than the volume of contact groove (553).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620393469.0U CN205565683U (en) | 2016-05-03 | 2016-05-03 | Electric leakage protection device for power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620393469.0U CN205565683U (en) | 2016-05-03 | 2016-05-03 | Electric leakage protection device for power distribution network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205565683U true CN205565683U (en) | 2016-09-07 |
Family
ID=56804706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620393469.0U Expired - Fee Related CN205565683U (en) | 2016-05-03 | 2016-05-03 | Electric leakage protection device for power distribution network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205565683U (en) |
-
2016
- 2016-05-03 CN CN201620393469.0U patent/CN205565683U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20170503 |