CN102184811A - Electronic multi-sectional overcurrent protection device - Google Patents
Electronic multi-sectional overcurrent protection device Download PDFInfo
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- CN102184811A CN102184811A CN2011101293307A CN201110129330A CN102184811A CN 102184811 A CN102184811 A CN 102184811A CN 2011101293307 A CN2011101293307 A CN 2011101293307A CN 201110129330 A CN201110129330 A CN 201110129330A CN 102184811 A CN102184811 A CN 102184811A
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Abstract
The invention discloses an electronic multi-sectional overcurrent protection device and relates to the technical field of protection of molded case circuit breakers and molded case residual current operation circuit breakers. The device is provided with a winding L1; a short-circuit protection element consisting of a static armature, a movable armature, a roller pin and a resetting torsional spring is arranged at the upper end of the winding L1; a bent part is arranged at the upper end of the static armature symmetrically; a limiting groove A is formed at one end on the inner side of the bent part; a limiting groove B is formed in the middle of the bent part; a winding L2 and a winding L3 are arranged at the lower end of the winding L1; the winding L1 is a primary side winding, and the winding L2 and the winding L3 are secondary side windings; the head of the winding L2 is connected with the tail of the winding L3; and the tail of the winding L2 and the head of the winding L3 are voltage signal output ends. The electronic multi-sectional overcurrent protection device has the advantages of setting or adjusting an overcurrent protection operation value on site, and remotely setting or controlling in combination with corresponding equipment.
Description
Technical field
The present invention relates to breaker of plastic casing, mould shell residual current action breaker resist technology field; it specifically is a kind of electronics multisection type overcurrent protective device; be applicable to that (2P, 3P, 4P, 3P+N are special-purpose code names in the circuit breaker for 2P, 3P, 4P, 3P+N; P represents the utmost point; N represents the N line; be commonly called as zero line, i.e. 2 utmost points, 3 utmost points, 4 utmost points, 3 utmost points+zero line) mold cased circuit breaker of original tape Thermomagnetic type, hydraulic-electromagnetic excess current protective function, the protection of plastic shell residual current action breaker.
Background technology
Breaker of plastic casing in the market, the overcurrent protection of moulding the shell residual current action breaker have two kinds of Thermomagnetic type, hydraulic-electromagnetics.
The Thermomagnetic type protection is made up of bimetal leaf and current coil L1, and under the effect of operating current, L1 produces certain heat, to bimetal leaf heating, the regular flexural deformation of the bimetal leaf that is heated.Bimetal leaf flexural deformation has promoted inner snap close of circuit breaker and release lever device, and the main switch contact disconnects rapidly under the operating mechanism effect of breaker of plastic casing, cuts off power supply, realizes the purpose of overcurrent protection.Its overcurrent operating value temperature influence is bigger, and consistency is bad, and its operating current value can only be at manufactory's inner setting.The user can not be required according to practicality, and on-the-spot the setting more can not long-rangely be set.
The hydraulic-electromagnetic protection is the product commonly used of existing market, and it is by current coil L1, and lubricating cup (movable motion electromagnet, spring and mineral oil are equipped with in lubricating cup inside), static gag bit, moving armature are formed.Under the effect of operating current, current coil L1 heats lubricating cup, and the lubricating cup interior oil of being heated expands, and makes inner motion electromagnet produce certain magnetic force simultaneously, from bottom to top motion.Shortened the distance of static gag bit and moving armature, under the effect of electric current and time, moving armature and static gag bit produce magnetic force, moving armature closing motion.Moving armature has promoted breaker of plastic casing internal lock buckle device, and main switch contact under the effect of breaker of plastic casing built-in function mechanism disconnects rapidly, cuts off power supply, realizes the purpose of overcurrent protection.The protection operating current value of hydraulic-electromagnetic protection product is to finish in manufactory inside, and the user can not more can not long-rangely set according to required on-the-spot the setting.
Summary of the invention
The invention provides a kind of electronics multisection type overcurrent protective device; can realize the rated current setting; realize electronics multisection type overcurrent protection; be rated current protection, 1.3 times of protections of rated current, 2.5 times of protections of rated current; 6～12 times of current protections; the user sets product in the erecting bed as required, cooperates relevant equipment can realize long-range setting and control.
The present invention realizes with following technical scheme: a kind of electronics multisection type overcurrent protective device, comprise the L1 coil, the upper end of L1 coil is equipped with short circuit protection component, and described short circuit protection component bag one is drawn together the static gag bit that is installed in the L1 coil upper end, tilts to be installed in the moving armature on the static gag bit; In the lower end of L1 coil one iron core is installed, an end of iron core is equipped with the L2 coil, and the other end is equipped with the L3 coil; L1 coil, L2 coil, L3 coil and iron core constitute current transformer, and the L1 coil is a primary coil, and L2 coil and L3 coil are secondary coil; The bending that the upper end, both sides of described static gag bit has symmetry, one end has limited impression A in the inboard of described bending, has limited impression B at the middle part of described bending; Described moving armature is inclined-plane swing type adhesive or plane adhesive.
The invention has the beneficial effects as follows: can set or adjust the overcurrent protection operating value at the scene, improve the protection precision of equipment greatly; Cooperate relevant device, can long-rangely set, Long-distance Control, improved the product practicality, for electrical network intellectuality, automation provide the high accuracy product.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the static gag bit structure chart;
Fig. 3 is the moving armature structural representation;
Fig. 4 is a mounting structure schematic diagram of the present invention;
Fig. 5 is a circuit block diagram of the present invention.
Among the figure: 1, lug plate, 2, zero sequence current mutual inductor, 3, the L2 coil, 4, the L1 coil, 5, L3 coil, 6, iron core, 7, moving head-clamp seat, 8, static gag bit, 9, moving armature, 91, bending I, 92, bending II, 93, projection, 10, needle roller, 11, reduction torsion spring, 12, moving contact, 13, moving contact silver point, 14, the fixed contact silver point, 15, fixed contact, 16, limited impression A, 17, limited impression B, 18, bending.
Embodiment
As depicted in figs. 1 and 2; electronics multisection type overcurrent protective device has a L1 coil 4; the upper end of L1 coil 4 is equipped with short circuit protection component, and described short circuit protection component is made up of moving armature 9, needle roller 10 and reduction torsion spring 11 that the static gag bit 8 that is installed in the L1 coil upper end, inclination are installed on the static gag bit 8.The bending 18 that the upper end, both sides of described static gag bit 8 has symmetry, an end has limited impression A16 in the inboard of described bending 18, has limited impression B17 at the middle part of described bending 18.
Described moving armature 9 is inclined-plane swing type adhesive or plane adhesive.In the present embodiment, moving armature 9 is inclined-plane swing type adhesive.The described both sides, moving armature 9 bottom that are inclined-plane swing type adhesive have crossette, and middle both sides have projection 93 upwards, and upper center has a groove; One side of groove has bending I 91, and another side has bending II92; Moving armature 9 is installed on the static gag bit 8 by needle roller 10 and reduction torsion spring 11, and needle roller 10 passes reduction torsion spring 11 and its two ends and passes projection and be installed on the static gag bit 8; Being stuck among limited impression A16 or the limited impression B17 of two force side correspondences of reduction torsion spring 11; Moving armature 9 can be around needle roller 10 rotations.
In the lower end of L1 coil 4 iron core 6 is installed, an end of iron core 6 is equipped with L2 coil 3, and the other end is equipped with L3 coil 5; L1 coil 4, L2 coil 3, L3 coil 5 and iron core 6 constitute current transformer.Wherein, L1 coil 4 is a primary coil, and L2 coil 3 and L3 coil 5 are secondary coil; The head of L2 coil and L3 coil tail join, and the tail of L2 and the head of L3 are voltage signal output end.In the present embodiment, described iron core 6 is become by the folded insert group of L type silicon steel core.
As shown in Figure 3, during installation, remove lubricating cup in first plastic housing or bimetal leaf and overcurrent, short-circuit protection original paper, the present invention is packed in the former segment space.
The upper end of L1 coil 4 connects a lug plate 1, and lug plate passes from the iron core of zero sequence current mutual inductor.There is a crotch upper end of L1 coil 4, and lug plate 1 is inserted crotch place and welding, increases its steadiness.L2 coil 3 and L3 coil 5 are installed in the lower end of L1 coil 4 by iron core 6, and the head of L2 coil and L3 coil tail join, and the tail of L2 and the head of L3 are voltage signal output, and the electronic component of supplying with CPU and adapted uses.The bottom of L1 coil 4 connects a moving head-clamp seat 7, on the moving head-clamp seat 7 a rotating moving contact 12 is installed, the end of moving contact 12 is provided with moving contact silver point 13, the below of moving contact 12 is provided with fixed contact 15, fixed contact 15 is provided with fixed contact silver point 14, when moving contact contacted with fixed contact 15, moving contact silver point 13 contacted with fixed contact silver point 14.Moving contact 12 is connected with operating mechanism, and operating mechanism is connected with CPU.
As shown in Figure 4, when the iron core 6 of electric current through L1 coil 4 communication channel routed over electrical current transformers, iron core 6 inductions have produced electromagnetic field, and L2 coil, the coil-induced voltage and current of L3 are through bridge rectifier and dividing potential drop, voltage stabilizing is handled, use for CPU and corresponding electronic component, CPU receives over-current signal and this machine setting signal, remote control signal, the processing of comparing, send different instructions and give executive component, the operating state of operating breaker, residual current action breaker reaches the overcurrent purpose of safety.
The present invention has following characteristics:
1, be not change original tape Thermomagnetic type, hydraulic-electromagnetic, overcurrent function breaker of plastic casing, mould on the basis of shell residual current action breaker shell sizes; former Thermomagnetic type, hydraulic-electromagnetic, over-current protecting element have been removed; increased current transformer newly; cooperate short circuit protection component; realize electronic type multistage overcurrent protection function, short-circuit protection function.
2, current transformer is made up of L1 coil 4, L2 coil 3, L3 coil 5 and iron core.L1 coil 4 has on a large scale that electric current passes through during work, and L2 coil 3 induces different electric energy with L3 coil 5, uses for CPU and electronic component, and CPU gathers the induced signal of L2 coil 3 and L3 coil 5, handles, and sends different instruction, has realized the multi-stage protective of electric current.By current transformer and CPU, the precision of its overcurrent protection improves greatly, and products panel is provided with adjusting, configuration switch and the interface of overcurrent operating value, when product uses, can set or adjust the overcurrent protection operating value at the scene; It also improves greatly to the equipment protection precision.This device also leaves communication interface, cooperates relevant device, can long-rangely set, Long-distance Control, has improved the product practicality, for electrical network intellectuality, automation provide the high accuracy product.
3, short circuit protection component is installed in the upper end of coil L1 in the current transformer, and it is by static gag bit 8, moving armature 9, and needle roller 10 and reduction torsion spring 11 are formed.
4, the short circuit current scalable is reduction torsion spring 11 and limited impression A16, limited impression B17.When two stress points of reduction torsion spring all are placed on limited impression A16, regulate the electric current maximum; When two stress points of reduction torsion spring all are placed on limited impression B17, regulate electric current and reduce; A stress point of reduction torsion spring is placed on limited impression A16, and when another stress point was placed on limited impression B17, it was placed in the middle to regulate electric current.
The course of work: fixed contact connects power supply, moving contact under the effect of operating mechanism with the fixed contact closure, moving contact silver point, fixed contact silver point are connected.Electric current is through the fixed contact silver point, and the moving contact silver point is through the moving contact holder, and to the L1 coil, communication channel routed over electrical current transformer, short circuit protection component, zero sequence current mutual inductor electric current to lug plate connect load electric.
When electric current surpassed the setting limiting value, CPU sent the instruction of threading off and gives operating mechanism, and under the effect of operating mechanism, moving contact separates with fixed contact, cut off the electricity supply the protection device security.
When short circuit current to L1 coil, communication channel routed over electrical current transformer, short circuit protection component during to load.The L1 coil is under the effect of big short circuit current electric current, and static gag bit produces magnetic force and makes moving armature adhesive campaign, the snap close of the bending I bump operating mechanism on the moving armature, and under the effect of operating mechanism, moving contact separates with fixed contact, cuts off the electricity supply the protection device security.Moving contact disconnects rapidly, cuts off bigger short circuit current, reaches the short-circuit protection purpose.
Claims (3)
1. electronics multisection type overcurrent protective device, comprise L1 coil (4), the upper end of L1 coil (4) is equipped with short circuit protection component, and described short circuit protection component comprises that one is installed in the static gag bit (8) of L1 coil upper end, tilts to be installed in the moving armature (9) on the static gag bit (8); It is characterized in that: in the lower end of L1 coil (4) iron core (6) is installed, an end of iron core (6) is equipped with L2 coil (3), and the other end is equipped with L3 coil (5); L1 coil (4), L2 coil (3), L3 coil (5) and iron core (6) constitute current transformer, and L1 coil (4) is a primary coil, and L2 coil (3) and L3 coil (5) are secondary coil; The bending (18) that the upper end, both sides of described static gag bit (8) has symmetry, an end has limited impression A (16) in the inboard of described bending (18), has limited impression B (17) at the middle part of described bending (18); Described moving armature (9) is inclined-plane swing type adhesive or plane adhesive.
2. electronics multisection type overcurrent protective device according to claim 1 is characterized in that: described moving armature (9) both sides, bottom that are inclined-plane swing type adhesive have crossette, and middle both sides have projection (93) upwards, and upper center has a groove; One side of groove has bending I (91), and another side has bending II (92); Moving armature (9) is installed on the static gag bit (8) by needle roller (10) and reduction torsion spring (11), and needle roller (10) passes reduction torsion spring (11) and its two ends and passes projection and be installed on the static gag bit (8); Being stuck among limited impression A (16) or the limited impression B (17) of two force side correspondences of reduction torsion spring (11); Moving armature (9) can rotate around needle roller (10).
3. electronics multisection type overcurrent protective device according to claim 1 is characterized in that: described iron core (6) is become by the folded insert group of L type silicon steel core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110129330 CN102184811B (en) | 2011-05-15 | 2011-05-15 | Electronic multi-sectional overcurrent protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110129330 CN102184811B (en) | 2011-05-15 | 2011-05-15 | Electronic multi-sectional overcurrent protection device |
Publications (2)
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| CN102184811A true CN102184811A (en) | 2011-09-14 |
| CN102184811B CN102184811B (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110129330 Active CN102184811B (en) | 2011-05-15 | 2011-05-15 | Electronic multi-sectional overcurrent protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618283A (en) * | 2013-11-22 | 2014-03-05 | 安徽昌南电气科技有限公司 | Over-current protection device |
| CN110277282A (en) * | 2019-06-28 | 2019-09-24 | 张爱华 | A kind of open frame circuit breaker of the scale segmentation protection based on Pyromagnetic release armature |
Citations (6)
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| US3337824A (en) * | 1963-12-09 | 1967-08-22 | Albert B Rypinski | Circuit breaker having dashpot type electro-magnetic core and simplified actuating linkage |
| US3821607A (en) * | 1972-12-29 | 1974-06-28 | Westinghouse Electric Corp | Circuit interrupter protective device |
| CN2731693Y (en) * | 2004-10-26 | 2005-10-05 | 温州创伟永吉电气有限公司 | Leakage protecting breaker |
| CN101231925A (en) * | 2007-01-23 | 2008-07-30 | 西门子公司 | Electromagnetic releasing device of protect switch and protect switch thereof |
| CN101388306A (en) * | 2007-09-14 | 2009-03-18 | 西门子公司 | Spool carrier and yoke of an electromagnetic actuator of a protective switching device, electromagnetic actuator and protective switching device |
| CN202049916U (en) * | 2011-05-15 | 2011-11-23 | 邳州市国龙电器有限公司 | Electronic multi-section overcurrent protection device |
-
2011
- 2011-05-15 CN CN 201110129330 patent/CN102184811B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3337824A (en) * | 1963-12-09 | 1967-08-22 | Albert B Rypinski | Circuit breaker having dashpot type electro-magnetic core and simplified actuating linkage |
| US3821607A (en) * | 1972-12-29 | 1974-06-28 | Westinghouse Electric Corp | Circuit interrupter protective device |
| CN2731693Y (en) * | 2004-10-26 | 2005-10-05 | 温州创伟永吉电气有限公司 | Leakage protecting breaker |
| CN101231925A (en) * | 2007-01-23 | 2008-07-30 | 西门子公司 | Electromagnetic releasing device of protect switch and protect switch thereof |
| CN101388306A (en) * | 2007-09-14 | 2009-03-18 | 西门子公司 | Spool carrier and yoke of an electromagnetic actuator of a protective switching device, electromagnetic actuator and protective switching device |
| CN202049916U (en) * | 2011-05-15 | 2011-11-23 | 邳州市国龙电器有限公司 | Electronic multi-section overcurrent protection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618283A (en) * | 2013-11-22 | 2014-03-05 | 安徽昌南电气科技有限公司 | Over-current protection device |
| CN110277282A (en) * | 2019-06-28 | 2019-09-24 | 张爱华 | A kind of open frame circuit breaker of the scale segmentation protection based on Pyromagnetic release armature |
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| Publication number | Publication date |
|---|---|
| CN102184811B (en) | 2013-10-02 |
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