CN204666289U - Circuit breaker short circuit protection pick-up unit - Google Patents
Circuit breaker short circuit protection pick-up unit Download PDFInfo
- Publication number
- CN204666289U CN204666289U CN201520190538.3U CN201520190538U CN204666289U CN 204666289 U CN204666289 U CN 204666289U CN 201520190538 U CN201520190538 U CN 201520190538U CN 204666289 U CN204666289 U CN 204666289U
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- circuit breaker
- thrust meter
- iron core
- towbar
- dynamic iron
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Abstract
The utility model provides a kind of circuit breaker short circuit protection pick-up unit being applied to electric power system circuit breaker detection technique field, lug boss (3) on the device body (1) of described pick-up unit arranges perforation (4), suit thrust meter thimble (5) in perforation (4), towbar (6) is set in circuit breaker base (2), thrust meter thimble (5) one end extends to towbar (6) position in circuit breaker base (2), thrust meter thimble (5) other end is connected with thrust meter (7), dynamic iron core (13) is connected with circuit breaker base (2) by dynamic iron core bracket (15), spring (16) one end of moving in wink is connected with dynamic iron core bracket (15), spring (16) other end of moving in wink is connected with the regulating arm (17) of dynamic iron core (13).Device of the present utility model, structure is simple, can accurately adjust spring collapsing length of moving in wink according to maximum tripping force numerical value, reduces contact abrasion, and reducing electrical network affects by short-circuit test.
Description
Technical field
The utility model belongs to power train isolating switch detection technique field, more particularly, relates to a kind of circuit breaker short circuit protection pick-up unit.
Background technology
Breaker of plastic casing (hereinafter referred to as isolating switch) generally adopts beating type electromagnet to realize short-circuit protection; the short-circuit protection value of conventional distribution isolating switch is generally set in 10In ± 20% scope, and the short-circuit protection value for protection motor isolating switch is then set in 12In ± 20% scope.Because the large minor mode of spring force of moving in wink of isolating switch clapper-type short-circuit protection structure is very difficult, domestic and international low voltage electrical apparatus industry does not adopt the method for testing of directly debugging to deal with problems all the time.The detection method of existing short-circuit protection, test on the instantaneous monitor station of specialty, short-circuit current detected value needed for isolating switch is exported by low voltage and high current mode, equipment is by adjustment voltage parameter, and AC, AB, BC single-phase to A, B, C string effect is by the lower limit of short-circuit current and higher limit respectively, when electric current lower (be in limited time 8In for this value of distribution isolating switch, for protecting this value of motor isolating switch to be then 9.6In), the tripping mechanism akinesia of isolating switch; When electric current is in upper in limited time (be 12In for this value of distribution isolating switch, be then 14.4In for this value of protection motor isolating switch), the tripping mechanism of isolating switch must action, namely meets properties of product requirement.But isolating switch do after assembling and setting is good short-circuit protection test time; due to the elasticity coefficient error of spring of moving in wink, error in length, spring of moving in wink two mouth hanging distance errors and hang dynamic iron core adjustment arm and the movement arm bending error etc. of spring of moving in wink; have impact on circuit breaker short circuit protection value error range and be greater than technical requirement, therefore adopt and just will can be guaranteed that the short-circuit protection value adjustment of isolating switch is in the scope of setting in this way by test repeatedly.Because test short-circuit current is very large, even if isolating switch is under low voltage condition, through repeatedly arcing test, burning of the dynamic and static contact of isolating switch is still very serious; Test is in order to meet the requirement of short-circuit protection parameter bound, and need energising repeatedly, just can adjust, and efficiency is extremely low.Because short-circuit test capacity is large, tests electrical network number of shocks more, affect electrical network steadily frequent.More than show; current industry adopts the circuit breaker short circuit protection detection method of professional instantaneous monitor station not to be quite reasonable; only have and solve short-circuit protection adjustment problem before testing; the short-circuit protection of guarantee isolating switch reduces debugging number of times when test, even do not need to detect the short-circuit protection performance that just can ensure isolating switch.
Utility model content
Technical problem to be solved in the utility model is: for the deficiencies in the prior art; there is provided a kind of structure simple; can the maximum tripping force numerical value of circuit breaker tripping be driven towbar afterwards to measure in rotation quickly and easily; thus accurately adjust according to maximum tripping force numerical value spring collapsing length of moving in wink; guarantee normal operation of circuit breaker; reduce contact abrasion, reduce the circuit breaker short circuit protection pick-up unit that electrical network affects by short-circuit test.
Solve above-described technical matters, the technical scheme that the utility model is taked is:
The utility model is a kind of circuit breaker short circuit protection pick-up unit, comprise device body, described device body is set to the structure that can fit together with circuit breaker base, device body arranges lug boss, lug boss arranges perforation, movable set thrust meter thimble in described perforation, circuit breaker base inside arranges the towbar that can drive circuit breaker tripping in rotation afterwards, described thrust meter thimble one end is set to the structure at the towbar position extending to circuit breaker base inside, the thrust meter thimble other end is fixedly connected with thrust meter, in described circuit breaker base, dynamic iron core and static iron core are set, dynamic iron core is connected with circuit breaker base by dynamic iron core bracket, move spring one end wink to be connected with dynamic iron core bracket, the spring other end of moving in described wink is connected with the regulating arm of dynamic iron core.
Described device body is set to n character form structure, device body is arranged the detection plate of multiple protrusion, the structure that there is gap is set between each detection plate, each detection plate is arranged respectively a lug boss, difference movable set thrust meter thimble in perforation on each lug boss, each thrust meter thimble is connected with a thrust meter respectively, and described thrust meter is set to the structure of maximum tripping force numerical value when can measure towbar drive circuit breaker tripping.
Described thrust meter is set to the structure that towbar can be driven to rotate, in circuit breaker base, towbar is set, when the device body of pick-up unit and circuit breaker base fit together, one end of thrust meter thimble on each lug boss is set to the structure extending to circuit breaker base inside respectively, and each thrust meter push rod one end is near towbar.
Described each thrust meter push rod arranges threaded portion respectively, each threaded portion is screwed setting nut, setting nut is set to regulate thrust meter thimble to insert the structure of circuit breaker base internal depth, and device body is inserted on circuit breaker base by left groove and right groove.
Described dynamic iron core is set to the structure can rotated relative to dynamic iron core bracket, thrust meter thimble is set to towbar to be driven to rotate by driving dynamic iron core to rotate, realize the structure of circuit breaker tripping, described regulating arm is set to pull the structure moving spring elongation or shortening wink.
The utility model also relates to a kind of detection method applying described pick-up unit simultaneously, and the step of described detection method is: 1) device body of pick-up unit and circuit breaker base are fit together; 2) exerted a force on thrust meter thimble by thrust meter, thrust meter thimble promotes towbar and rotates, and towbar drives circuit breaker tripping after rotating; 3) thrust meter is when exerting a force thrust meter thimble, measures maximum tripping force numerical value during towbar drive circuit breaker tripping; 4) the maximum tripping force numerical value measured by thrust meter and the designing requirement numerical value of circuit breaker tripping contrasts, and maximum tripping force numerical value, in designing requirement numerical range, shows that the maximum tripping force numerical value of isolating switch meets the requirements.
When the maximum tripping force numerical value measure thrust meter and the designing requirement numerical value of circuit breaker tripping contrast, maximum tripping force numerical value is not in designing requirement numerical range, show that isolating switch maximum tripping force numerical value is undesirable, regulate along dynamic its length by the regulating arm readjusting dynamic iron core, again retest according to above-mentioned steps after adjustment, until maximum tripping force numerical value is fallen in designing requirement numerical range.
When the device body of pick-up unit and circuit breaker base fit together, device body is inserted on circuit breaker base by left groove and right groove, the connection of implement device body and circuit breaker base, when thrust meter thimble promotes dynamic iron core, thrust meter thimble vertically exerts a force on dynamic iron core surface.
Adopt the technical solution of the utility model, following beneficial effect can be obtained:
Circuit breaker short circuit protection pick-up unit described in the utility model, can fit together the device body of pick-up unit and circuit breaker base; Exert a force on thrust meter thimble by thrust meter 7, thrust meter thimble promotes towbar and rotates, and towbar drives circuit breaker tripping after rotating; Thrust meter, when exerting a force thrust meter thimble, measures maximum tripping force numerical value during towbar drive circuit breaker tripping; The maximum tripping force numerical value measure thrust meter and the designing requirement numerical value of circuit breaker tripping contrasts, and maximum tripping force numerical value, in designing requirement numerical range, shows that the maximum tripping force numerical value of isolating switch meets the requirements.At this moment, when the maximum tripping force numerical value measure thrust meter and the designing requirement numerical value of circuit breaker tripping contrast, maximum tripping force numerical value is not in designing requirement numerical range, show that isolating switch maximum tripping force numerical value is undesirable, regulate along dynamic its length by the regulating arm readjusting dynamic iron core, again retest according to above-mentioned steps after adjustment, until maximum tripping force numerical value is fallen in designing requirement numerical range.Circuit breaker short circuit protection pick-up unit described in the utility model; structure is simple; pick-up unit can be passed through; the maximum tripping force numerical value of circuit breaker tripping is driven to measure towbar afterwards in rotation quickly and easily; thus accurately adjust according to maximum tripping force numerical value spring collapsing length of moving in wink, guarantee normal operation of circuit breaker, reduce contact abrasion; reduce electrical network to affect by short-circuit test, guarantee short-circuiting device dependable performance.
Accompanying drawing explanation
Brief description is made to the content expressed by each accompanying drawing of this instructions and the mark in figure below:
Fig. 1 is circuit breaker short circuit described in the utility model protection pick-up unit and the structural representation of circuit breaker base when being combined together;
Fig. 2 is the structural representation of the device body of circuit breaker short circuit described in the utility model protection pick-up unit;
Fig. 3 is the side, sectional structural representation of the device body of circuit breaker short circuit described in the utility model protection pick-up unit;
Accompanying drawing acceptance of the bid note is respectively: 1, device body; 2, circuit breaker base; 3, lug boss; 4, bore a hole; 5, thrust meter thimble; 6, towbar; 7, thrust meter; 8, plate is detected; 9, threaded portion; 10, setting nut; 11, left groove; 12, right groove; 13, dynamic iron core; 14, static iron core; 15, dynamic iron core bracket; 16, to move in wink spring; 17, regulating arm.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect and principle of work etc. of embodiment of the present utility model as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail:
As shown in accompanying drawing 1-accompanying drawing 3, the utility model is a kind of circuit breaker short circuit protection pick-up unit, comprise device body 1, described device body 1 is set to the structure that can fit together with circuit breaker base 2, device body 1 is arranged lug boss 3, lug boss 3 is arranged perforation 4, movable set thrust meter thimble 5 in described perforation 4, circuit breaker base 2 inside arranges the towbar 6 that can drive circuit breaker tripping in rotation afterwards, described thrust meter thimble 5 one end is set to the structure at towbar 6 position extending to circuit breaker base 2 inside, thrust meter thimble 5 other end is fixedly connected with thrust meter 7, dynamic iron core 13 and static iron core 14 are set in circuit breaker base 2, dynamic iron core 13 is connected with circuit breaker base 2 by dynamic iron core bracket 15, spring 16 one end of moving in wink is connected with dynamic iron core bracket 15, spring 16 other end of moving in wink is connected with the regulating arm 17 of dynamic iron core 13.By rotating regulating arm 17, regulating arm changes relative to the distance of dynamic iron core bracket, can realize the adjustment along spring 16 length of moving.Arranged by said structure, the device body 1 of pick-up unit can be fit together with circuit breaker base 2; Exert a force on thrust meter thimble 5 by thrust meter 7, thrust meter thimble 5 promotes towbar 6 and rotates, and drives circuit breaker tripping after towbar 6 rotates; Thrust meter 7, when exerting a force thrust meter thimble 5, measures maximum tripping force numerical value when towbar 6 drives circuit breaker tripping; The maximum tripping force numerical value measured by thrust meter 7 and the designing requirement numerical value of circuit breaker tripping contrast, and maximum tripping force numerical value, in designing requirement numerical range, shows that the maximum tripping force numerical value of isolating switch meets the requirements.At this moment, when the maximum tripping force numerical value measure thrust meter and the designing requirement numerical value of circuit breaker tripping contrast, maximum tripping force numerical value is not in designing requirement numerical range, show that isolating switch maximum tripping force numerical value is undesirable, regulate along dynamic its length by the regulating arm readjusting dynamic iron core, again retest according to above-mentioned steps after adjustment, until maximum tripping force numerical value is fallen in designing requirement numerical range.Circuit breaker short circuit protection pick-up unit of the present utility model; structure is simple; pick-up unit can be passed through; the maximum tripping force numerical value of circuit breaker tripping is driven to measure towbar afterwards in rotation quickly and easily; accurately adjust according to maximum tripping force numerical value spring collapsing length of moving in wink, guarantee normal operation of circuit breaker, reduce contact abrasion; reduce electrical network to affect by short-circuit test, guarantee short-circuiting device reliably working.
Described device body 1 is set to n character form structure, device body 1 is arranged the detection plate 8 of multiple protrusion, the structure that there is gap is set between each detection plate 8, each detection plate 8 is arranged respectively a lug boss 3, difference movable set thrust meter thimble 5 in perforation 4 on each lug boss 3, each thrust meter thimble 5 is connected with a thrust meter 7 respectively, and described thrust meter 7 is set to measure the structure of maximum tripping force numerical value when towbar 6 drives circuit breaker tripping.When needs pick-up unit works, the thrust meter thimble on the device body of pick-up unit, under thrust meter effect, moves in short-circuiting device pedestal, and thrust meter thimble force, on towbar 6, drives circuit breaker tripping after towbar 6 rotates; Thrust meter 7, when exerting a force thrust meter thimble 5, measures maximum tripping force numerical value when towbar 6 drives circuit breaker tripping; The maximum tripping force numerical value measured by thrust meter 7 and the designing requirement numerical value of circuit breaker tripping contrast, and maximum tripping force numerical value, in designing requirement numerical range, shows that the maximum tripping force numerical value of isolating switch meets the requirements.
Described thrust meter 7 is set to the structure that towbar 6 can be driven to rotate, towbar 6 is set in circuit breaker base 2, when device body 1 and the circuit breaker base 2 of pick-up unit fit together, one end of thrust meter thimble 5 on each lug boss 3 is set to the structure extending to circuit breaker base 2 inside respectively, and each thrust meter push rod 5 one end is near towbar 6.Towbar 6 corresponds to the not homophase (as A, B, C phase) in isolating switch, and it is equal with the number of phases in isolating switch to detect plate 8 quantity, and often corresponding one is detected plate 8.Such vibrational power flow, is convenient to towbar 6 after rotation, drives the maximum tripping force numerical value of circuit breaker tripping to measure, improves the testing efficiency of pick-up unit,
Described each thrust meter push rod 5 arranges threaded portion 9 respectively, each threaded portion 9 is screwed setting nut 10, setting nut 10 is set to regulate thrust meter thimble 5 to insert the structure of circuit breaker base 2 internal depth, and device body 1 is inserted on circuit breaker base 2 by left groove 11 and right groove 12.The setting of left groove 11 and right groove 12, to ensure that the position between multiple detection plate 8 and circuit breaker base is fixed, detecting plate about 8 can not offset, and makes the thrust meter thimble in each perforation corresponding with dynamic movement arm unshakable in one's determination;
Described dynamic iron core 13 is set to the structure can rotated relative to dynamic iron core bracket 15, thrust meter thimble 5 is set to towbar 6 to be driven to rotate by driving dynamic iron core 13 to rotate, realize the structure of circuit breaker tripping, described regulating arm 17 is set to pull the structure that spring 16 elongates or shorten of moving in wink.
The utility model also relates to a kind of detection method applying described pick-up unit simultaneously, and the step of described detection method is: 1) fit together with circuit breaker base 2 by the device body 1 of pick-up unit; 2) exert a force on thrust meter thimble 5 by thrust meter 7, thrust meter thimble 5 promotes towbar 6 and rotates, and drives circuit breaker tripping after towbar 6 rotates; 3) thrust meter 7 is when exerting a force thrust meter thimble 5, measures maximum tripping force numerical value when towbar 6 drives circuit breaker tripping; 4) the maximum tripping force numerical value measured by thrust meter 7 and the designing requirement numerical value of circuit breaker tripping contrast, and maximum tripping force numerical value, in designing requirement numerical range, shows that the maximum tripping force numerical value of isolating switch meets the requirements.Measuring the object of the maximum tripping force numerical value of isolating switch, is in order to the numerical value according to the maximum tripping force numerical value of isolating switch, adjusts the tensile elongation of spring of moving in wink.
When the maximum tripping force numerical value measured by thrust meter 7 and the designing requirement numerical value of circuit breaker tripping contrast, maximum tripping force numerical value is not in designing requirement numerical range, show that isolating switch maximum tripping force numerical value is undesirable, regulate along moving spring 16 length by the regulating arm 17 readjusting dynamic iron core 13, again retest according to above-mentioned steps after adjustment, until maximum tripping force numerical value is fallen in designing requirement numerical range.Such method, simple to operate, adjusted by limited number of time, can will adjust to satisfactory collapsing length, and guarantee normal operation of circuit breaker along spring of moving, reduce contact abrasion, reducing electrical network affects by short-circuit test.
When device body 1 and the circuit breaker base 2 of pick-up unit fit together, device body 1 is inserted on circuit breaker base 2 by left groove 11 and right groove 12, the connection of implement device body 1 and circuit breaker base 2, when thrust meter thimble 5 promotes dynamic iron core 13, thrust meter thimble 5 vertically force is surperficial at dynamic iron core 13.
Circuit breaker short circuit protection pick-up unit described in the utility model, can fit together the device body of pick-up unit and circuit breaker base; Exert a force on thrust meter thimble by thrust meter 7, thrust meter thimble promotes towbar and rotates, and towbar drives circuit breaker tripping after rotating; Thrust meter, when exerting a force thrust meter thimble, measures maximum tripping force numerical value during towbar drive circuit breaker tripping; The maximum tripping force numerical value measure thrust meter and the designing requirement numerical value of circuit breaker tripping contrasts, and maximum tripping force numerical value, in designing requirement numerical range, shows that the maximum tripping force numerical value of isolating switch meets the requirements.At this moment, when the maximum tripping force numerical value measure thrust meter and the designing requirement numerical value of circuit breaker tripping contrast, maximum tripping force numerical value is not in designing requirement numerical range, show that isolating switch maximum tripping force numerical value is undesirable, regulate along dynamic its length by the regulating arm readjusting dynamic iron core, again retest according to above-mentioned steps after adjustment, until maximum tripping force numerical value is fallen in designing requirement numerical range.Circuit breaker short circuit protection pick-up unit described in the utility model; structure is simple; pick-up unit can be passed through; the maximum tripping force numerical value of circuit breaker tripping is driven to measure towbar afterwards in rotation quickly and easily; thus accurately adjust according to maximum tripping force numerical value spring collapsing length of moving in wink, guarantee normal operation of circuit breaker, reduce contact abrasion; reduce electrical network to affect by short-circuit test, guarantee short-circuiting device reliably working.
Detection method described in the utility model; test easy; easy to adjust; described technical scheme is reliably simple, convenient; detected parameters catches in real time; the test of product actuating range is reliable, can meet circuit breaker short circuit protection requirement, has advantages such as reducing life cycle of the product, characterization processes are simple, testing product parameter stability simultaneously.
By reference to the accompanying drawings exemplary description is carried out to the utility model above; the concrete realization of obvious the utility model is not subject to the restrictions described above; as long as have employed the various improvement that method of the present utility model is conceived and technical scheme is carried out; or design of the present utility model and technical scheme directly applied to other occasions, all in protection domain of the present utility model without to improve.
Claims (5)
1. a circuit breaker short circuit protection pick-up unit, comprise device body (1), it is characterized in that: described device body (1) is set to the structure that can fit together with circuit breaker base (2), device body (1) is arranged lug boss (3), lug boss (3) is arranged perforation (4), described perforation (4) interior movable set thrust meter thimble (5), circuit breaker base (2) inside arranges the towbar (6) that can drive circuit breaker tripping in rotation afterwards, described thrust meter thimble (5) one end is set to the structure extending to inner towbar (6) position of circuit breaker base (2), thrust meter thimble (5) other end is fixedly connected with thrust meter (7), dynamic iron core (13) and static iron core (14) are set in described circuit breaker base (2), dynamic iron core (13) is connected with circuit breaker base (2) by dynamic iron core bracket (15), spring (16) one end of moving in wink is connected with dynamic iron core bracket (15), spring (16) other end of moving in described wink is connected with the regulating arm (17) of dynamic iron core (13).
2. circuit breaker short circuit protection pick-up unit according to claim 1, it is characterized in that: described device body (1) is set to n character form structure, device body (1) is arranged the detection plate (8) of multiple protrusion, the structure that there is gap is set between each detection plate (8), each detection plate (8) is arranged respectively a lug boss (3), difference movable set thrust meter thimble (5) in perforation (4) on each lug boss (3), each thrust meter thimble (5) is connected with a thrust meter (7) respectively, described thrust meter (7) is set to the structure of maximum tripping force numerical value when can measure towbar (6) drive circuit breaker tripping.
3. circuit breaker short circuit protection pick-up unit according to claim 1; it is characterized in that: described thrust meter (7) is set to the structure that towbar (6) can be driven to rotate; towbar (6) is set in circuit breaker base (2); when device body (1) and the circuit breaker base (2) of pick-up unit fit together; one end of thrust meter thimble (5) on each lug boss (3) is set to extend to the inner structure of circuit breaker base (2) respectively, and each thrust meter push rod (7) one end is respectively near towbar (6).
4. circuit breaker short circuit protection pick-up unit according to claim 1; it is characterized in that: each thrust meter push rod (7) arranges threaded portion (9) respectively; each threaded portion (9) is screwed setting nut (10); setting nut (10) is set to regulate thrust meter thimble (5) to insert the structure of circuit breaker base (2) internal depth, and device body (1) is inserted on circuit breaker base (2) by left groove (11) and right groove (12).
5. circuit breaker short circuit protection pick-up unit according to claim 1; it is characterized in that: described dynamic iron core (13) is set to the structure can rotated relative to dynamic iron core bracket (15); thrust meter thimble (5) is set to towbar (6) to be driven to rotate by driving dynamic iron core (13) to rotate; realize the structure of circuit breaker tripping, described regulating arm (17) be set to pull move in wink spring (16) elongate or shorten structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190538.3U CN204666289U (en) | 2015-03-31 | 2015-03-31 | Circuit breaker short circuit protection pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190538.3U CN204666289U (en) | 2015-03-31 | 2015-03-31 | Circuit breaker short circuit protection pick-up unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204666289U true CN204666289U (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520190538.3U Withdrawn - After Issue CN204666289U (en) | 2015-03-31 | 2015-03-31 | Circuit breaker short circuit protection pick-up unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204666289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697694A (en) * | 2015-03-31 | 2015-06-10 | 安徽鑫龙电器股份有限公司 | Circuit breaker short circuit protection detecting device and detection method employing device |
-
2015
- 2015-03-31 CN CN201520190538.3U patent/CN204666289U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697694A (en) * | 2015-03-31 | 2015-06-10 | 安徽鑫龙电器股份有限公司 | Circuit breaker short circuit protection detecting device and detection method employing device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District No. 118 North Park electrical components Patentee after: ANHUI ZHONGDIAN XINGFA AND XINLONG TECHNOLOGY CO., LTD. Address before: 241008 Anhui Province, Wuhu City Jiuhua Jiujiang District No. 118 North Park electrical components Patentee before: Xinlong Electric-Appliance Co., Ltd., Anhui |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anhui Xin Long SBLV Assignor: ANHUI ZHONGDIAN XINGFA AND XINLONG TECHNOLOGY CO., LTD. Contract record no.: 2017340000005 Denomination of utility model: Circuit breaker short circuit protection detecting device and detection method employing device Granted publication date: 20150923 License type: Exclusive License Record date: 20170316 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150923 Effective date of abandoning: 20170606 |
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| AV01 | Patent right actively abandoned |