CN203481037U - Current transformer - Google Patents
Current transformer Download PDFInfo
- Publication number
- CN203481037U CN203481037U CN201320626375.XU CN201320626375U CN203481037U CN 203481037 U CN203481037 U CN 203481037U CN 201320626375 U CN201320626375 U CN 201320626375U CN 203481037 U CN203481037 U CN 203481037U
- Authority
- CN
- China
- Prior art keywords
- housing
- current transformer
- wiring terminals
- secondary wiring
- boss
- 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 - Lifetime
Links
- 238000005452 bending Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Abstract
The utility model discloses a current transformer which comprises a shell with a central through hole, two sets of secondary terminals, two covers and bosses. A protrusion is formed in the middle of the top end of the shell, the two sets of secondary terminals are arranged at the top end of the shell and located on the two sides of the protrusion respectively, and each set of secondary terminals comprises two secondary terminals; the two covers are connected to the top end of the shell in a rotating mode and located on the two sides of the protrusion respectively, the two covers cover corresponding sets of secondary terminals and provided with wire passing holes where wires can penetrate through, and lead sealing holes are formed in the shell and the covers; the bosses are formed on the two sides of the protrusion, a gap is formed between the top of each boss and the protrusion, a connecting shaft is arranged at the top end of each boss, one end, close to the protrusion, of each cover is provided with a catching groove, and the catching grooves are matched with the connecting shafts to form a rotation connecting structure. The current transformer has the advantages of being reasonable in structure and good in using effect.
Description
Technical field
The utility model relates to a kind of current transformer, belongs to instrument transformer structural design field.
Background technology
While measuring electric current electric energy in low-voltage alternating-current circuit, thereby conventionally alive circuit is sampled to alive circuit electric current through the central through hole of current transformer.
Secondary wiring terminals on conventional current instrument transformer so not only constitutes a threat to Electrical Safety outside being conventionally exposed to, and the exposure of binding post has an opportunity to take advantage of stealing lawless person, causes the loss of power resource.
The above-mentioned defect existing in order to eliminate conventional current instrument transformer, a kind of anti-electricity-theft current transformer is disclosed in patent documentation CN2277557Y, comprise iron core, secondary winding and shell, iron core and secondary winding outlet terminal place are provided with by bolted the protective cover on housing, have plumbous sealing hole on bolt and protective cover.Though the current transformer in this patent documentation can solve the defect that conventional current instrument transformer exists, and has good result of use, but still has deficiency: by bolt, protective cover is fastened on housing, causes protective cover handling inconvenient; And in use also easily there is the problem that protective cover is lost.
Utility model content
To this, the purpose of this utility model is to provide the more rational current transformer of a kind of structure.
The technical scheme that realizes the utility model object is:
A current transformer, comprising:
Be provided with the housing of central through hole, the top middle portion of described housing forms lug boss;
Two groups of secondary wiring terminals, two groups of secondary wiring terminals are arranged on the top of described housing, and divide the both sides that occupy described lug boss, and every group of secondary wiring terminals comprises two secondary wiring terminals;
Two cover caps that are rotatably connected on described housing top, two cover caps divide the both sides that occupy described lug boss, and hide one group of corresponding secondary wiring terminals, and described cover cap is provided with the cable-through hole passing for wire, and described housing and cover cap are provided with lead seal hole;
The both sides of described lug boss form boss, between the top of described boss and described lug boss, leave gap, the top of described boss is provided with connecting axle, and one end that described cover cap closes on lug boss is provided with catching groove, described catching groove and the described connecting axle formation rotation connection structure that is connected.
In technique scheme, the dividing plate that two secondary wiring terminals of same group are taken shape on housing separates.
In technique scheme, the bottom of described housing is provided with housing is fixed on to the mount pad on external equipment.
In technique scheme, the quantity of described mount pad is two, and is symmetricly set on the both sides of described housing.
In technique scheme, fore shell and back cover are bolted to connection and form described housing;
Described housing and two mount pads link together by described bolt.
In technique scheme, described mount pad is provided with installing hole, and described installing hole is long slot bore.
In technique scheme, described cover cap is transparent cover.
In technique scheme, each secondary wiring terminals comprises binding post, bullet pad, tension disc and the screw being connected with housing, described binding post is provided with screw, and the threaded portion of described screw is spirally connected through the screw on described bullet pad, described tension disc and described binding post.
In technique scheme, the two ends that described tension disc is relative are provided with the bending part extending towards binding post direction, and the spacing between two bending parts equates with the width of described binding post.
In technique scheme, described housing is the square casing that is provided with described central through hole.
The utlity model has positive effect:
(1) in current transformer of the present utility model, the both sides of described lug boss form boss, between the top of described boss and described lug boss, leave gap, the top of described boss is provided with connecting axle, one end that described cover cap closes on boss is provided with catching groove, described catching groove and the described connecting axle formation rotation connection structure that is connected; By adopting this structure that cover cap is set, easily install, and cover cap is installed rear difficult drop-off loss; In addition, owing to having preset gap between boss and lug boss, so can guarantee that cover cap has the larger anglec of rotation (at least 90 °) when opening, to avoid in the situation that cover cap is fully opened, cover cap hinders wiring operation.
(2), in current transformer of the present utility model, by dividing plate is set, two secondary wiring terminals of same group are separated and can avoid the situation of being short-circuited.
(3), in current transformer of the present utility model, the bottom of described housing is provided with housing is fixed on to the mount pad on external equipment; The quantity of described mount pad is two, and is symmetricly set on the both sides of described housing, by adopting this structure can make on equipment mounted externally that current transformer is more firm.
(4), in current transformer of the present utility model, fore shell and back cover are bolted to connection and form described housing; Described housing and two mount pads link together by described bolt, by adopting this structure just fore shell, back cover and mount pad can be fixed together through once-through operation, have simplified assembly process, effectively increase work efficiency.
(5) in current transformer of the present utility model, described cover cap is transparent cover, when checking secondary wiring terminals wiring situation, need not open cover cap thus.
(6) in current transformer of the present utility model, each secondary wiring terminals comprises binding post, bullet pad, tension disc and the screw being connected with housing, described binding post is provided with screw, the threaded portion of described screw is spirally connected through the screw on described bullet pad, described tension disc and described binding post, by adopting this structure can increase the reliability that wire is connected with secondary wiring terminals.
(7) in current transformer of the present utility model, the two ends that described tension disc is relative are provided with the bending part extending towards binding post direction, the width of two bending parts equates with the width of described binding post, by adopting this structure, after wiring completes, tension disc just remains at relative static state with binding post, so can guarantee that the wire being connected with secondary wiring terminals is difficult for getting loose.
Accompanying drawing explanation
Fig. 1 is the stereogram of current transformer of the present utility model;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the structural representation of the cover cap of the current transformer in Fig. 1 while opening;
Fig. 4 is the structural representation of cover cap in Fig. 3;
Fig. 5 is the front view of secondary wiring terminals of the present utility model;
Fig. 6 is the explosive view of Fig. 5.
Reference numeral shown in figure is: 1-housing; 11-lug boss; 12-boss; 13-connecting axle; 14-dividing plate; 2-secondary wiring terminals; 21-binding post; 22-bullet pad; 23-tension disc; 24-screw; 25-bending part; 3-cover cap; 31-cable-through hole; 32-catching groove; 4-mount pad; 41-installing hole.
Embodiment
Below in conjunction with Figure of description, a kind of embodiment of current transformer of the present utility model is elaborated:
As shown in Figures 1 to 4, a kind of current transformer, comprising: be provided with the housing 1 of central through hole, the top middle portion of described housing 1 forms lug boss 11; 2, two groups of secondary wiring terminals 2 of two groups of secondary wiring terminals are arranged on the top of described housing 1, and divide the both sides that occupy described lug boss 11, and every group of secondary wiring terminals 2 comprises two secondary wiring terminals 2; Be rotatably connected on two cover caps 3 on described housing 1 top, two cover caps occupy the both sides of described lug boss 11 for 3 minutes, and one group of secondary wiring terminals 2 corresponding to covering, described cover cap 3 is provided with the cable-through hole 31 passing for wire, described housing 1 and cover cap 3 are provided with lead seal hole, and lead sealing line is arranged in described lead seal hole; The both sides of described lug boss 11 form boss 12, between the top of described boss 12 and described lug boss 11, leave gap, the top of described boss 12 is provided with connecting axle 13, one end that described cover cap 3 closes on lug boss 11 is provided with catching groove 32, described catching groove 32 and the described connecting axle 13 formation rotation connection structure that is connected, in order to realize this rotation connection structure, the open end width that described catching groove 32 can be set is less than its inner width, is also less than the external diameter of connecting axle 13.By adopting said structure that cover cap 3 is set, cover cap 3 is easily installed, and after cover cap 3 installations, difficult drop-off is lost; In addition, owing to having preset gap between boss 12 and lug boss 11, so can guarantee that cover cap 3 has the larger anglec of rotation (at least 90 °) when opening, to guarantee when cover cap 3 is fully opened, cover cap 3 can not hinder wiring operation.
In the present embodiment, the dividing plate 14 that two secondary wiring terminals 2 of same group are taken shape on housing 1 separates; By dividing plate 14 is set, two secondary wiring terminals 2 of same group are separated and can avoid the situation of being short-circuited.
The bottom of described housing 1 is provided with housing 1 is fixed on to the mount pad 4 on external equipment.
In the present embodiment, the quantity of described mount pad 4 is two, and is symmetricly set on the both sides of described housing 1, by two mount pads 4 are set, can make on equipment mounted externally that current transformer is more firm.
On the basis of said structure, fore shell and back cover are bolted to connection and form described housing 1; Described housing 1 and two mount pads 4 link together by described bolt.By adopting this structure just fore shell, back cover and mount pad 4 can be fixed together through once-through operation, simplified assembly process, effectively increase work efficiency.
Described mount pad 4 is provided with installing hole 41, and described installing hole 41 is long slot bore.
Described cover cap 3 in the present embodiment is transparent cover, when checking secondary wiring terminals 2 wiring situation, need not open cover cap 3 thus.
As other execution mode, described secondary wiring terminals 2 comprises binding post 21, bullet pad 22, tension disc 23 and the screw 24 being connected with housing 1, described binding post 21 is provided with screw, and the threaded portion of described screw 24 is spirally connected with the screw on described binding post 21 through described bullet pad 22, described tension disc 23; By adopting this structure can increase the reliability that wire is connected with secondary wiring terminals 2, referring specifically to Fig. 5 and Fig. 6.
On the basis of said structure, the spacing that the relative two ends of described tension disc 23 are provided with between bending part 25, two bending parts 25 that extend towards binding post 21 directions equates with the width of described binding post 21; By adopting this structure, after wiring completes, tension disc 23 just remains at relative static state with binding post 21, so can guarantee that the wire being connected with secondary wiring terminals 2 is difficult for getting loose.
Described housing 1 in the present embodiment is for being provided with the square casing of described central through hole; In addition, two cover caps 3 in the present embodiment are when closure, and the upper surface place of the upper surface of two cover caps 3 and described lug boss 11 at grade, adopts this structure to make the profile of product more attractive in appearance.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection range of the present utility model.
Claims (10)
1. a current transformer, comprising:
The housing (1) that is provided with central through hole, the top middle portion of described housing (1) forms lug boss (11);
Two groups of secondary wiring terminals (2), two groups of secondary wiring terminals (2) are arranged on the top of described housing (1), and divide the both sides that occupy described lug boss (11), and every group of secondary wiring terminals (2) comprises two secondary wiring terminals (2);
Be rotatably connected on two cover caps (3) on described housing (1) top, two cover caps (3) minute occupy the both sides of described lug boss (11), and one group of secondary wiring terminals (2) corresponding to covering, described cover cap (3) is provided with the cable-through hole (31) passing for wire, and described housing (1) and cover cap (3) are provided with lead seal hole;
It is characterized in that, the both sides of described lug boss (11) form boss (12), between the top of described boss (12) and described lug boss (11), leave gap, the top of described boss (12) is provided with connecting axle (13), one end that described cover cap (3) closes on lug boss (11) is provided with catching groove (32), described catching groove (32) and described connecting axle (13) the formation rotation connection structure that is connected.
2. current transformer according to claim 1, is characterized in that, the dividing plate (14) that two secondary wiring terminals (2) of same group are taken shape on housing (1) separates.
3. current transformer according to claim 2, is characterized in that, the bottom of described housing (1) is provided with housing (1) is fixed on to the mount pad (4) on external equipment.
4. current transformer according to claim 3, is characterized in that, the quantity of described mount pad (4) is two, and is symmetricly set on the both sides of described housing (1).
5. current transformer according to claim 4, is characterized in that, described housing comprises fore shell and back cover, and described fore shell and described back cover are bolted to connection and form described housing (1);
Described housing (1) links together by described bolt with two mount pads (4).
6. current transformer according to claim 5, is characterized in that, described mount pad (4) is provided with installing hole (41), and described installing hole (41) is long slot bore.
7. according to the current transformer described in any one in claim 1 to 6, it is characterized in that, described cover cap (3) is transparent cover.
8. according to the current transformer described in any one in claim 1 to 6, it is characterized in that, described secondary wiring terminals (2) comprises binding post (21), bullet pad (22), tension disc (23) and the screw (24) being connected with housing (1), described binding post (21) is provided with screw, and the threaded portion of described screw (24) is spirally connected with the screw on described binding post (21) through described bullet pad (22), described tension disc (23).
9. current transformer according to claim 8, it is characterized in that, the relative two ends of described tension disc (23) are provided with the bending part (25) extending towards binding post (21) direction, and the spacing between two bending parts (25) equates with the width of described binding post (21).
10. current transformer according to claim 1, is characterized in that, described housing (1) is for being provided with the square casing of described central through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626375.XU CN203481037U (en) | 2013-10-11 | 2013-10-11 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626375.XU CN203481037U (en) | 2013-10-11 | 2013-10-11 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203481037U true CN203481037U (en) | 2014-03-12 |
Family
ID=50229320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320626375.XU Expired - Lifetime CN203481037U (en) | 2013-10-11 | 2013-10-11 | Current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203481037U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064341A (en) * | 2014-06-10 | 2014-09-24 | 天津市三源电力设备制造有限公司 | Inverted type current transformer |
| CN104200954A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Sealing and storing device for suspended transformer |
-
2013
- 2013-10-11 CN CN201320626375.XU patent/CN203481037U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064341A (en) * | 2014-06-10 | 2014-09-24 | 天津市三源电力设备制造有限公司 | Inverted type current transformer |
| CN104200954A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Sealing and storing device for suspended transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200916 Address after: 325604 people's Industrial Park, Liushi Town, Yueqing, Wenzhou, Zhejiang (Yueqing Economic Development Zone) Patentee after: PEOPLE ELECTRICAL APPLIANCE GROUP INSTRUMENT Co.,Ltd. Address before: 325604 people's Industrial Park, 555 Station Road, Liushi Town, Wenzhou, Zhejiang, Yueqing Patentee before: PEOPLE ELECTRIC APPLIANCE GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140312 |
|
| CX01 | Expiry of patent term |