CN201639040U - Electric connector for low-voltage circuit breaker test - Google Patents
Electric connector for low-voltage circuit breaker test Download PDFInfo
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- CN201639040U CN201639040U CN2010201562107U CN201020156210U CN201639040U CN 201639040 U CN201639040 U CN 201639040U CN 2010201562107 U CN2010201562107 U CN 2010201562107U CN 201020156210 U CN201020156210 U CN 201020156210U CN 201639040 U CN201639040 U CN 201639040U
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Abstract
The utility model belongs to the test and detection technology of electrical products (low-voltage circuit breaker) and particularly relates to an electric connector for low-voltage circuit breaker test. The connector comprises an upper line connecting piece and a lower line connecting piece, wherein the structure of the upper line connecting piece is as follows: the frame body of the electric connector is fixedly installed at the rear half part of a bottom plate, an upper connection support is fixedly installed at the upper part of the frame body, the front end of the upper connection support comprises two rows of through holes, the through hole of the upper row is covered with upper contact pieces and the through hole of the lower row is fixed with a locating shaft through a nut; and the structure of the lower line connecting piece is as follows: a lower contact base plate is fixed on the bottom plate through a bolt and provided with grooves with the number the same as that of the upper contact pieces, a lower contact base is embedded in each groove, the bolt fixes the lower contact base in the groove of the lower contact base plate from the bottom end through the through holes on the lower contact base plate and the bottom plate, and the through hole at the upper end of the lower contact base is sheathed with lower contact pieces. The electric connector avoids the complicated and heavy operation work for manual wiring conducted during test of common electrical appliances each time and eliminates unsafe factors.
Description
Technical field:
The utility model belongs to the test detection technique of electric equipment products (low-voltage circuit breaker), is specially a kind of test electric connector of low voltage breaker.
Background technology:
Low-voltage circuit breaker mainly is meant: " being used for exchanging the various circuit breakers that 50Hz, rated voltage 1200V and following or dc rated voltage 1500V and following circuit play effects such as break-make, control or protection "; it is the important component part of electrical equipment industry; it is complete sets of basic equipment spare in the mechanical industry; distribution system mesolow switchgear assembly mainly is made of various low-voltage circuit breaker elements, and the function and the performance of low-voltage circuit breaker play crucial effects to low-voltage complete switch equipment.In industrial automation system, the also various control flows that need constitute by low-voltage circuit breaker, control desk, controller etc.The market capacity of low-voltage circuit breaker is closely to link to each other with the development of electric utility.Using by the low-voltage circuit breaker distribution more than 80% of electric energy that generating equipment is sent.The low-voltage circuit breaker industry has about 1500 families of manufacturing enterprise at present.10,000 kilowatts of generating equipments of every increase need about 20,000 all kinds of low-voltage circuit breakers supporting with it approximately.Along with electric power system increase-volume amount constantly increases, supporting according to experience than calculating, need about 480,000 of low pressure frame-type circuit breaker every year, 4,820,000 of breaker of plastic casing.As the main switch of low-voltage distribution branch road, the protection component of distribution system, low-voltage circuit breaker is used widely in the safe distribution in fields such as industry, agricultural, communications and transportation, national defence, culture and education, health, finance, commerce, tourist service and people's lives; Its service behaviour and reliability direct relation national product normally carry out personal safety with operating personnel.Therefore, very urgent and necessary to the low-voltage circuit breaker test with the research of detection technique.
At present, when being electrically connected in the low-voltage circuit breaker test or before using, generally the method for Cai Yonging is manual wiring and connector wiring.The shortcoming of manual wiring mode of operation is a complex operation, and workload is big, and test efficiency is low, and is unfavorable to personal safety.The correlation technique and the method for connector wiring mainly contain three major types: 1) clipping wiring.Disclosed number of patent application be 03112834.3 electric connecting mechanism for abstractable breaker according to drawout breaker body bus and drawout chassis underframe Up Highway UHW profile characteristics, be designed to the two rows contact chip and form plug-in type chuck and fixed chuck.Its shortcoming be need operating personnel at first pinch the plug-in type chuck with fixed chuck open clamp drawout chassis underframe Up Highway UHW joint after, again the breaker body busbar joint is inserted in the plug-in type chuck, electrical connection process complexity, and, be the multiple spot way of contact to chuck and busbar joint contact surface form fit required precision height.Disclosed number of patent application is by one group of binding clip that links to each other circuit breaker to be linked to each other with external connection line in the junction block of a kind of residual current circuit breaker of 200620104913.9.Its shortcoming is that the copper annex that is welded on the termination wire clamp on the residual current circuit breaker magnet ring comes off easily, and the welding operation complexity; Other end binding clip is connected with external connection line to be needed to finish by screwing the screw operation by hand.2) touch type wiring.Disclosed number of patent application is that 200620025702.6 integrated test bench for creepage breaker Electical connector is moved up and down by computer telecommunication control cylinder piston rod, the needle-bar plate motion of needle electrode contact is equipped with in drive, and passes that pin hole contacts with the residual current circuit breaker terminals that are placed on it on the supporting plate.Its shortcoming is pin contact and pin hole position, size quality of fit to be required high, and need accurately calculate the computer control piston rod movement time and cooperates with blade position to guarantee the needle-bar plate, guarantees that the pin contact reliably contacts with the residual current circuit breaker terminals.Operation acquires a certain degree of difficulty, and operating personnel's technical merit is required high.The circuit breaker quick-mounting device that disclosed number of patent application is 92213765.X utilizes in the trip gear handle that rotating shaft is rotated, simultaneously drive support and the contact fixed on it rotates an angle, finish and being connected and disconnection of breaker connection terminal through connecting rod, pivoted arm, square shaft transmission.Its shortcoming is middle operational movement transmission link to be connected quality of fit require high.3) insert-type wiring.Disclosed number of patent application is that 96190094.6 the secondary disconnecting assembly utilization that is used for high ampere-circuit breaker is arranged in terminal and the socket connector of box of the circuit breaker madial wall on the pin connector in the breaker assembly outside and interacts and finish that circuit breaker is connected with power distribution circuit and disconnection.Its shortcoming need be installed the outer assembly of projecting form for the circuit breaker product, and the sub-townhouse structure of pin connector multiterminal is very high to plug size and installation accuracy requirement, otherwise may certain circuit virtual connection when plugging together.The main circuit that disclosed number of patent application is 87101905A and auxiliary circuit circuit breaker are introduced and are extracted out mechanical device and utilize being connected and disconnection between contact pin (moving joint) and jack (permanent joint) interaction carrying out external electrical connector and the connector that is fixed on circuit breaker.Its shortcoming is that case for circuit breaker needs the mount joint, and the quality of fit between fixing and movable connection requires high.
This shows, in process of the test, how can replace the artificial loaded down with trivial details wiring operation or the personnel operation operation that simplifies the operation, improve test efficiency, reduce labour intensity and do not increase artificial unreliable factor again simultaneously and become one of key technology by automatic manipulation mechanism.
Technology contents:
The purpose of this utility model is low-voltage circuit breaker when test that exists in the current techniques in order to overcome, loaded down with trivial details artificial wiring problem.The utility model emphasis has solved above-mentioned key technical problem, has realized the automatic connection operating function when low-voltage circuit breaker tested, and has solved the problem that its test efficiency is low, threaten personal safety.
The technical solution of the utility model is:
A kind of test electric connector of low voltage breaker, this connector comprises wire connections and following wire connections two parts composition, the structure that wherein goes up wire connections is, the support body of electric connector is packed in the later half position of base plate, last wiring support is packed in the top of support body, last wiring support front end divides two exhausting holes, and suit upper contact head spare in the last exhausting hole; Fixing locating shaft through nut in the following exhausting hole; The structure of following wire connections is, following contact backing plate through screw on base plate, quantity and the identical groove of upper contact head number of packages amount are arranged on the following contact backing plate, each groove is embedded in a following contact base, through hole under the screw warp on contact backing plate and the base plate will descend contact base to be fixed on down in the groove of contact backing plate from the bottom, suit down contact members in the through hole of following contact base upper end, and following contact members and upper contact head spare position are corresponding one by one.
The structure of described upper contact head spare is, the upper contact head cover is packed in the through hole of wiring support, after upper contact head is loaded onto spring, embed in the upper contact head trepanning, the upper contact head afterbody that 2 nuts will pass the upper contact head trepanning screws, simultaneously 2 wiring pads in the middle of it are clamped, a wiring pad is linked to each other with load circuit by lead, and another wiring pad is linked to each other with the contact state detection line by lead.
The described structure of contact members down is, after following contact is loaded onto spring, in the hole under embedding on the contact base, the following contact tail that 2 nuts will pass down the contact base endoporus screws, simultaneously 2 wiring pads in the middle of it are clamped, a wiring pad is linked to each other with load circuit by lead, and another wiring pad is linked to each other with the contact state detection line by lead.
Described upper contact head and following contact are a kind of screws, and its structure mainly is divided into three parts, and head is the cylinder of a hemispherical end face, and the middle part is an elongated cylinder, and afterbody is threaded elongated cylinder; The equal in length of three parts, diameter reduces successively.
Described upper contact head cover is a kind of hollow cylinder plastic bushing, and its endoporus is divided into preceding hole and metapore two parts, and preceding hole internal diameter is greater than the metapore internal diameter, and preceding hole is 9: 1 with the length ratio of metapore; Its internal diameter and length match with upper contact head.
The inner hole structure of described contact base down is identical with the upper contact head cover.
Described upper contact head spare is identical with the number of following contact members, can be preferably 4 according to the number of poles increase and decrease of the terminals of test product.
The beneficial effects of the utility model are:
1. the utility model is if adjust to go up row's upper contact head through-hole spacing on the wiring support, and the position of following registration axle and following contact base spacing can be taken into account the various model low-voltage circuit breakers of similar structures, have suitable versatility.
2. the utility model has designed upper and lower contact especially in upper and lower wire connections, contact links to each other with load circuit, contact state testing circuit through wiring pad, lead, be in place at test product, the terminals of test product are with after upper and lower contact contacts, test loop and the contact state of promptly connecting test product automatically detect the loop, solved the loaded down with trivial details and heavy operation element that each test all will be carried out artificial wiring in the conventional electrical appliance test, improved operating efficiency, eliminated unsafe factor.
3. the utility model utilizes the cooperation of spring, cheese head screw to form contact, and the impact the when automatic connection of spring available buffer test product is installed also guarantees the reliable of electrical connection, and cheese head screw can reduce the contact area of tie point, reduces contact resistance, reduces heating.
Description of drawings:
Fig. 1 is the right view of the utility model test electric connector of low voltage breaker;
Fig. 2 is the vertical view of the utility model test electric connector of low voltage breaker, and wherein for the reason of page Butut, the view dextrorotation turn 90 degrees;
Fig. 3 is the front view of the utility model test electric connector of low voltage breaker;
Fig. 4 is the structure chart of upper contact head spare in the utility model test electric connector of low voltage breaker;
Fig. 5 is the structure chart of following contact members in the utility model test electric connector of low voltage breaker;
Fig. 6 is the structure chart of locating shaft in the utility model test electric connector of low voltage breaker.
Embodiment of the present utility model is as follows:
The structure of test electric connector of low voltage breaker such as Fig. 1, Fig. 2, shown in Figure 3, structure such as Fig. 4, Fig. 5 and shown in Figure 6 of upper contact head spare, following contact members and locating shaft in the electric connector.Electric connector mainly is made up of last wire connections and following wire connections two parts.The structure of last wire connections is, the support body 42 of electric connector is the metal frame of " several " word shape, and it is fixed on the later half position of base plate 1 through symmetrical 4 screws 47; Last wiring support 19 global shapes are " recessed " type, are fastened on the top of support body 42 by both sides through symmetrical 4 screws 41; Wiring support 19 front ends are divided into two exhausting holes on " recessed " type, and last row has 4 identical through holes of spacing, and suit upper contact head spare 16 in each through hole; Following row has 3 through holes, and its position is correspondence position in the middle of last row's two two through hole, is fixing locating shaft 9 through nut 10 in each through hole.The structure of following wire connections is, contact backing plate 49 is fixed on the base plate 1 through 2 screws 11 under the bar shaped, 4 grooves that spacing is identical are arranged on the following contact backing plate 49, each groove is embedded with a following contact base 48, the through hole of 4 screws 14 on following contact backing plate 49 and base plate 1 will descend contact base 48 to be fixed on down in the groove of contact backing plate 49 from the bottom, suit 4 identical following contact members 52 in the through hole of following contact base 48 upper ends.Contact members 52 and upper contact head spare 16 positions are corresponding one by one under 4 groups.
The structure of described upper contact head spare 16 is, upper contact head cover 18 is packed on the screw thread of wiring support 19 through holes by its outside screw thread; After upper contact head 17 is loaded onto spring 20, embed in the hole of upper contact head cover 18, nut 21 and nut 24 will pass the afterbody that upper contact head overlaps the upper contact head 17 of 18 endoporus and screw, simultaneously wiring pad 22 in the middle of it and wiring pad 23 are clamped, wiring pad 22 is linked to each other with load circuit by lead, and wiring pad 23 is linked to each other with the contact state detection line by lead.
Described upper contact head 17 is a kind of metallic screws, mainly is divided into three parts, and head is the cylinder of a hemispherical end face, and the middle part is an elongated cylinder, and afterbody is threaded elongated cylinder.The equal in length of head, middle part and afterbody, diameter reduces successively.
Described upper contact head cover 18 is a kind of hollow cylinder plastic bushings, and its endoporus is divided into preceding hole and metapore two parts, and preceding hole internal diameter is greater than the metapore internal diameter, and preceding hole is 9: 1 with the length ratio of metapore.
In order to realize being electrically connected automatically function, diameter and length that upper contact head 17 in the described upper contact head spare 16, upper contact head overlap 20 on 18 endoporus and spring match.1) upper contact head 17 total lengths are greater than the total length of upper contact head cover 18, and upper contact head 17 tail diameter are overlapped 18 metapore internal diameters less than upper contact head, assurance upper contact head 17 afterbodys overlap 18 holes from upper contact head and pass, and are screwed by nut 21 and nut 24, prevent that upper contact head 17 is subjected to external force to overlap 18 the place aheads from upper contact head and deviates from.2) to overlap 18 preceding hole internal diameters identical for the diameter of upper contact head 17 heads and spring 20 external diameters, upper contact head, upper contact head 17 middle parts just can embed in the preceding hole of upper contact head cover 18 after loading onto spring 20, stopped by the metapore of upper contact head cover 18 again simultaneously, prevent that upper contact head 17 is deviate from from the rear of upper contact head cover 18 by external force.Thus, upper contact head 17 promptly is sleeved in the upper contact head cover 18.
The described structure of contact members 52 down is, after following contact 51 is loaded onto spring 50, in the through hole under embedding on the contact base 48, the afterbody that nut 43 and nut 46 will pass down the following contact 51 of contact base 48 endoporus screws, simultaneously wiring pad 44 in the middle of it and wiring pad 45 are clamped, wiring pad 44 is linked to each other with load circuit by lead, and wiring pad 45 is linked to each other with the contact state detection line by lead.Thereby test product inserts the test loop through upper contact head 17, wiring pad 22, following contact 51 and wiring pad 44 and lead; Test product inserts test product contact state detection loop through upper contact head 17, wiring pad 23, following contact 51 and wiring pad 45 and lead.
It is described that contact 51 structures are identical with upper contact head 17 down.
It is 18 identical that the inner hole structure of described down contact base 48 and upper contact head overlap.
Described locating shaft 9 is a kind of according to installing hole on the test product and special screw mainly is divided into three parts, and head is the cylinder of circular cone end face, and the middle part is a short cylinder, and afterbody is threaded elongated cylinder.Head, tail diameter equate, and all less than the middle part diameter.The following exhausting hole of last wiring support 19 is divided into preceding hole and metapore two parts, and preceding bore dia is greater than the back bore dia, and preceding hole is 1: 3 with the length ratio of metapore; The diameter of its preceding hole and metapore middle part, the tail diameter with locating shaft 9 respectively is identical.After test product is in place, the head of locating shaft 9 will partly insert and carry out the test product location in the installing hole of test product; Simultaneously, locating shaft 9 middle parts embed in the preceding hole of going up wiring support 19 just, and afterbody is passed by the metapore of last wiring support 19, screws through nut 10, is fixed on the wiring support 19.
The number of described upper and lower contact members can be preferably 4 according to the number of poles increase and decrease of the terminals of test product.
The number of described locating shaft 9 is preferably 3 according to the number increase and decrease of upper contact head spare.
Suit on upper contact head 17 and the following contact 51 spring 20, spring 50 had both played cushioning effect when test product is electrically connected automatically, play the effect that automatic fine tuning is electrically connected the installation site again, guaranteed to be electrically connected closely reliable.The design of registration axle 9 also has certain corrective action under last wiring support 19 front ends, and it can carry out the adjustment of size and position according to the different model breaker structure, guarantees that test product is electrically connected the accuracy of installation site.The end that upper contact head 17, following contact 51 contact with the test product terminals is designed to hemisphere, can reduce the contact area between contact and the test product terminals, reduces contact resistance, reduces heating.
The electrically connected method of test product is, when test product is in place, the test product terminals contact and upper and lower contact can be pushed backward the 1-10 millimeter with upper contact head 17, following contact 51, spring 20, spring 50 are compressed, so, under the effect of spring counter-force, hemispheric upper contact head 17, down contact 51 just respectively with the upper and lower terminals close proximity of test product.Simultaneously locating shaft 9 heads insert in the test product installing hole the test product location, and that guarantees to be electrically connected is stable.The other end of upper contact head 17, following contact 51 links to each other with load circuit with pad 44 through the wiring pad 22 of correspondence respectively, so, finish from being dynamically connected the test loop that test product, upper contact head 17, wiring pad 22, load, wiring pad 44 and following contact 51 constitute, when handle closes/separating brake, during the contact closure of test product/disconnection, the test loop on/off; The other end of upper contact head 17, following contact 51 links to each other with the test side with pad 45 through the wiring pad 23 of correspondence respectively simultaneously, so, the test product contact state that test product, upper contact head 17, wiring pad 23, Microcomputer Detecting card, wiring pad 45 and following contact 51 constitute detects the loop and has also realized simultaneously being dynamically connected certainly, when the test product contact closure, the Microcomputer Detecting card detects the touch voltage at contact two ends; When the test product contact disconnected, the Microcomputer Detecting card detected the off voltage at contact two ends.Whole electrical connection wiring process was finished after contacting with upper contact head 17, following contact 51 at once in the moment that test product is in place.And a skilled operative employee carries out wiring according to the traditional wired method to one four utmost point test product, generally needs 8 minutes at the soonest.In addition, in the wiring process, only need test product is placed regulation test station, operating personnel do not need the arbitrary element in the contact test loop, operating process handy and safe.Therefore, the utility model has reached raising wiring efficient, eliminates the purpose of unsafe factor.
The utility model is according to the low-voltage circuit breaker design feature, designed upper and lower wire connections, link to each other with load circuit, contact state testing circuit through wiring pad, lead with the corresponding upper and lower contact of circuit breaker test product terminals, as long as upper and lower contact and test product terminals join, promptly finish the wiring work of test product, also can provide microcomputer automatic testing conditions, whole electrical connection simple operation, reliable; The upper and lower wire connections of the utility model design can be taken into account the various model low-voltage circuit breakers of similar structures, has certain versatility; The utility model is designed to hemisphere with upper and lower contact end, can reduce the contact area between contact and the test product terminals, reduces contact resistance, reduces heating; The utility model designs upper and lower contact suit and spring, can both play cushioning effect when test product is electrically connected automatically, plays the effect that automatic fine tuning is electrically connected the installation site again, guarantees to be electrically connected closely reliable; The utility model is arranged design under last wiring support front end have locating shaft, can insert the test product installing hole positions test product, guarantee the stability that is electrically connected, it can be according to the different model breaker structure, the size of test product installing hole, number, position distribution etc. are carried out the adjustment of size, number and position on last wire connections, guarantee that test product is electrically connected the accuracy of installation site, has suitable versatility.
The utility model is not addressed part and is applicable to prior art.
Claims (6)
1. test electric connector of low voltage breaker, it is characterized by this connector and comprise wire connections and following wire connections two parts composition, the structure that wherein goes up wire connections is, the support body of electric connector is packed in the later half position of base plate, last wiring support is packed in the top of support body, last wiring support front end divides two exhausting holes, is installing upper contact head spare in the last exhausting hole; Fixing locating shaft through nut in the following exhausting hole; The structure of following wire connections is, following contact backing plate through screw on base plate, quantity and the identical groove of upper contact head number of packages amount are arranged on the following contact backing plate, be embedded in a following contact base in each groove, through hole under the screw warp on contact backing plate and the base plate will descend contact base to be fixed on down in the groove of contact backing plate from the bottom, suit down contact members in the through hole of following contact base upper end, and following contact members and upper contact head spare position are corresponding one by one.
2. test electric connector of low voltage breaker as claimed in claim, the structure that it is characterized by described upper contact head spare is, the upper contact head cover is packed in the through hole of wiring support, after upper contact head is loaded onto spring, embed in the upper contact head trepanning, the upper contact head afterbody that 2 nuts will pass the upper contact head trepanning screws, and simultaneously 2 wiring pads in the middle of it is clamped, a wiring pad is linked to each other with load circuit by lead, and another wiring pad is linked to each other with the contact state detection line by lead.
3. test electric connector of low voltage breaker as claimed in claim, it is characterized by described upper contact head is a kind of screw, and head is a hemisphere, and the centre is a cylinder, and afterbody is threaded cylinder; The upper contact head cover is a kind of hollow cylinder plastic bushing, and endoporus is divided into preceding hole and metapore two parts, and preceding hole internal diameter is greater than the metapore internal diameter, and its hole internal diameter and length match with upper contact head.
4. test electric connector of low voltage breaker as claimed in claim, it is characterized by the described structure of contact members down is, after following contact is loaded onto spring, in the hole under embedding on the contact base, the following contact tail that 2 nuts will pass down the contact base endoporus screws, simultaneously 2 wiring pads in the middle of it are clamped, a wiring pad is linked to each other with load circuit by lead, and another wiring pad is linked to each other with the contact state detection line by lead.
5. test electric connector of low voltage breaker as claimed in claim, it is characterized by described contact down is a kind of screw, and head is a hemisphere, and the centre is a cylinder, and afterbody is threaded cylinder.The inner hole structure of following contact base is identical with the upper contact head cover.
6. test electric connector of low voltage breaker as claimed in claim, the number that it is characterized by described upper contact head spare is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201562107U CN201639040U (en) | 2010-04-13 | 2010-04-13 | Electric connector for low-voltage circuit breaker test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201562107U CN201639040U (en) | 2010-04-13 | 2010-04-13 | Electric connector for low-voltage circuit breaker test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201639040U true CN201639040U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201562107U Expired - Lifetime CN201639040U (en) | 2010-04-13 | 2010-04-13 | Electric connector for low-voltage circuit breaker test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201639040U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807758A (en) * | 2010-04-13 | 2010-08-18 | 河北工业大学 | Test electric connector of low voltage breaker |
| CN103560403A (en) * | 2013-10-10 | 2014-02-05 | 国家电网公司 | Sealing box special for shutdown transformer |
| CN105259431A (en) * | 2014-07-04 | 2016-01-20 | 苏州万龙电气集团股份有限公司 | Testing equipment for switching device |
| CN110824291A (en) * | 2019-10-31 | 2020-02-21 | 杭州海舵技术有限公司 | Automatic wire disconnecting and connecting device and working method thereof |
-
2010
- 2010-04-13 CN CN2010201562107U patent/CN201639040U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807758A (en) * | 2010-04-13 | 2010-08-18 | 河北工业大学 | Test electric connector of low voltage breaker |
| CN101807758B (en) * | 2010-04-13 | 2012-11-14 | 河北工业大学 | Test electric connector of low voltage breaker |
| CN103560403A (en) * | 2013-10-10 | 2014-02-05 | 国家电网公司 | Sealing box special for shutdown transformer |
| CN103560403B (en) * | 2013-10-10 | 2016-04-06 | 国家电网公司 | The special joint sealing of stoppage in transit transformer |
| CN105259431A (en) * | 2014-07-04 | 2016-01-20 | 苏州万龙电气集团股份有限公司 | Testing equipment for switching device |
| CN105259431B (en) * | 2014-07-04 | 2018-10-19 | 苏州万龙电气集团股份有限公司 | Testing equipment for switching device |
| CN110824291A (en) * | 2019-10-31 | 2020-02-21 | 杭州海舵技术有限公司 | Automatic wire disconnecting and connecting device and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: The 13th Construction Co., Ltd.Of China National Chemical Engineering Assignor: Hebei University of Technology Contract record no.: 2012130000127 Denomination of utility model: Test electric connector of low voltage breaker Granted publication date: 20101117 License type: Exclusive License Record date: 20120713 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20101117 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |