CN201041790Y - Over-load break testing table for digital fully-automatic breaker - Google Patents
Over-load break testing table for digital fully-automatic breaker Download PDFInfo
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- CN201041790Y CN201041790Y CNU2006200273762U CN200620027376U CN201041790Y CN 201041790 Y CN201041790 Y CN 201041790Y CN U2006200273762 U CNU2006200273762 U CN U2006200273762U CN 200620027376 U CN200620027376 U CN 200620027376U CN 201041790 Y CN201041790 Y CN 201041790Y
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Abstract
The utility model relates to a digital full-automatic breaker overload shorting test table, which includes a framework, a digital AC constant flow source, a direct-coupled upflowing transformer, and a positioning device, a compacting device, a transmission device, a brake closing-breaking device, and a control device which are fixed and connected to the framework. A slot of the positioning device is connected with a push board of the transmission device. The compacting device is provided with two cylinders symmetrically arranged on the two sides of the transmission device. The free ends of two levers of the compacting device are opposite to two output terminals of the upflowing transformer. The brake closing-breaking device is arranged on the upside of the compacting device. The output end of the digital AC constant flow source is connected with the input end of the upflowing transformer. Since digital AC constant flow source is adopted, the precision of the constant current is less than 1 percent, the constant flow range is from 200A to 10000A, and the responding time is short. The timing system in the computer is adopted, and the time test is accurate. The utility model uses special data collecting card to control the motion of the cylinder accurately and reliably, and the test process is effective and precise to ensure the factory leaving qualities of the breakers.
Description
Affiliated technical field
The utility model belongs to the circuit breaker detection and uses experimental rig, particularly relates to a kind of digital full automatic breaker over-loading short cut testing test stand.
Background technology
Known when circuit breaker overload and short circuit characteristic are detected at present, also adopt manually-operated method to finish mostly.At first, in testing process, long delay characteristic, short circuit short time delay and temporal properties need to detect on different testing stands respectively; Secondly, need the people electrode test position of circuit breaker for a change, fix by anchor clamps then, and need manually to fasten again the adjustment that lock is finished each test position.The adjustment of electric current is to adjust the purpose of testing electric current with the elementary of a rising current transformer of voltage regulator adjustment to reach, but it is slower artificially to adjust the voltage regulator response speed, and the precision of voltage regulator adjustment experiment electric current is lower; The time timing of circuit breaker is after detecting the test operating current by current relay, the connection timing circuit is finished, be 10ms～20ms the operate time of current relay itself, this just causes the testing time precision low, especially when temporal properties detect, because the internal resistance parameter distribution of circuit breaker is discrete bigger, therefore given instantaneous operation electric current is inaccurate, causes relative error bigger.In addition, owing to detect respectively, test efficiency is reduced at two testing stands.
Summary of the invention
The utility model provides a kind of digital full automatic breaker over-loading short cut testing test stand of realizing every circuit breaker is once carried out long delay characteristic, short circuit short time delay and temporal properties content of the test for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: it includes frame, also includes digital AC constant-current source, the direct connecting type rising current transformer and the positioner that is used for fixing tested circuit breaker that is fixed on the frame that do not have excessive lead, be used for hold down gag that tested breaker connection terminal is communicated with the rising current transformer contact terminal, be used for each binding post of tested circuit breaker is placed conveyer above the rising current transformer position respectively, be used for tested killer switch handle is placed the on/off switch device and the control device of each test position;
Direct connecting type rising current transformer:
It includes rising current transformer, and the outlet side of described rising current transformer is fixed with output copper bar contact terminal for drawing copper bar at the end of drawing copper bar;
The on/off switch device:
It includes cylinder, magnetic sensor, the on/off switch guide rail that two electric control valves are housed, the on/off switch draw-in groove that is used to promote tested circuit breaker handle; Described on/off switch cylinder and the on/off switch guide rail that two electric control valves are housed is connected on the frame respectively; Described on/off switch draw-in groove be fixed on the above the piston rod of on/off switch cylinder of checkout gear frame and be connected mutually, and described on/off switch draw-in groove and the mutual sliding engaged of on/off switch guide rail that is fixed on the frame, three magnetic sensors are housed on the cylinder body of described on/off switch cylinder, and three magnetic sensors are separately fixed at two ends and the centre position on the on/off switch cylinder block;
Positioner:
It includes circuit breaker draw-in groove, spring and supporting plate; Described supporting plate is placed in the draw-in groove, between described supporting plate and the draw-in groove fixing spring is housed;
Hold down gag:
It includes two symmetrically arranged clamping cylinders, has swing pedestal, support and the lever of rotating shaft; Described swing pedestal and support are attached on the frame respectively, described clamping cylinder hangs and is fixed on the swing pedestal, the middle part of described lever is fixed on the support by support shaft, and an end of lever and the piston rod of described clamping cylinder be connected with each other with movable axis, and the other end of lever is a free end;
Conveyer:
It includes and promotes mainly cylinder, secondary push cylinder, transmits guide rail and secondary push cylinder holder box; The described cylinder of promoting mainly is separately fixed on the described frame with the transmission guide rail, describedly be used for promoting the circuit breaker positioner and realize that the secondary push cylinder that accurately transmits the location is fixed in the described secondary push cylinder holder box, be fixed with a push pedal that is used for fixing the positioner of circuit breaker on the described secondary push cylinder, described secondary push cylinder holder box also is fixed with a slide block that has a draw-in groove, and slide block that has draw-in groove and described transmission guide rail that secondary push cylinder holder box is connected slidably cooperatively interact together each other; The magnetic position-sensing switch is equipped with at the two ends of promoting mainly cylinder and secondary push cylinder respectively.
Control device:
Control device includes digital AC constant-current source and operating desk control device; Described operating desk control device includes magnetic sensor and the relay thereof on the cylinder that adopts on computer, described on/off switch device, conveyer and the hold down gag; Output to the signal input port of digital AC constant-current source by the running parameter signal of operating desk control device input port input, digital AC constant-current source output services electric current is to the input of rising current transformer; Simultaneously by operating desk control device input port running parameter signal of importing and the automatic and manual run signal of controlling each mechanical device, and the cylinder location signal that magnetic sensor produced on the cylinder that adopted of described hold down gag, conveyer and on/off switch device all is input to each corresponding input port of computer, fanout mouth output signal is to corresponding relay, and relay is to the make-and-break signal of the corresponding air valve output of each mechanical device cylinder;
The draw-in groove bottom surface of positioner recited above is connected mutually with the push pedal of conveyer; Symmetrically arranged two cylinders of described hold down gag, have swing pedestal, support and the lever of rotating shaft, be placed in the both sides of the conveyer that is fixed with positioner respectively, and the free end of symmetrically arranged two levers of hold down gag is faced mutually each other up and down with the position of two contact terminals of the direct-connected transformer that places conveyer below respectively; Described on/off switch device is placed in the top of hold down gag.
The utility model can also adopt following technical measures:
Connected mode between end of drawing copper bar described in the described direct connecting type rising current transformer and output copper bar contact terminal is the phosphor-copper welding.
The on/off switch draw-in groove of described on/off switch device is fixed on the slide block, and described slide block is connected with the piston rod of on/off switch cylinder on being fixed on the checkout gear frame, and the on/off switch guide rail that is fixed on the checkout gear frame inserts in the groove of slide block.
Two arm of forces that are in described support shaft both sides of the lever described in the described hold down gag are not on a horizontal plane, and lever is the laborsaving lever that is uneven in length at the arm of force of support shaft both sides.
Be fixed with insulation cushion on another free end of lever described in the described hold down gag.
Advantage and the good effect that the utlity model has are: test because the short-circuit protection of circuit breaker and overload protection are incorporated into same testing stand, on/off switch, button, commutation detection all can be finished automatically again.Owing to adopted direct connecting type rising current transformer, rising current transformer directly is connected with tested breaker connection terminal again, so big electric current side contactless greatly reduces the resistance of low-voltage circuit again, makes efficient increase substantially, and the energy lowers consumption 50%.This overload short circuit multi-function test stand is because the employing patent No. is 200520025651.2 digital AC constant-current source, and the precision of constant current is higher than 1%, and reference constant current is wide to be 200-10000A, and the response time is short; Adopt high-precision timing system in the computer, time detecting is accurate; Computer comes the control cylinder action by the exclusive data capture card, and accurate positioning is reliable, and entire test is efficient, makes that accurately the outgoing of circuit breaker is guaranteed.
Description of drawings
Fig. 1 is the direct-connected transformer schematic diagram in the utility model;
Fig. 2 is the on/off switch device schematic diagram in the utility model;
Fig. 3 is one of positioner schematic diagram in the utility model;
Fig. 4 is the A-A view of Fig. 3;
Fig. 5 be in the utility model the positioner schematic diagram two;
Fig. 6 is one of conveyer schematic diagram in the utility model;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is the left view of Fig. 6;
Fig. 9 is one of hold down gag schematic diagram in the utility model;
Figure 10 is the right view of Fig. 9;
Figure 11 is one of general structure schematic diagram of the present utility model;
Figure 12 is two of a general structure schematic diagram of the present utility model;
Figure 13 is the general structure schematic diagram that removes positioner among Figure 12;
Figure 14 is an overall control principle block diagram of the present utility model.
Embodiment
For further understanding content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
As shown in Figure 1, be input coil 1-4 on the 1-1 unshakable in one's determination of rising current transformer, the outlet side of rising current transformer 1-1 is to draw copper bar 1-2, is output copper bar contact terminal 1-3 at the end of drawing copper bar 1-2.
Draw the end and the mode of exporting between the copper bar contact terminal 1-3 copper bar that adopts the phosphor-copper welding that is connected of copper bar 1-2.
Rising current transformer 1-1 is directly linked on the power consumption equipment by output copper bar contact terminal 1-3 at last by drawing copper bar 1-2.
As shown in Figure 2, on/off switch draw-in groove 2-1 is fixed on that slide block 2-2 goes up and is connected with the piston rod of on/off switch cylinder 2-3 on being fixed on checkout gear frame 6, and the on/off switch guide rail 2-4 that is fixed on the checkout gear frame 6 inserts in the groove of slide block 2-2; Three magnetic sensor 2-5,2-6,2-7 are housed on the cylinder body of on/off switch cylinder 2-3, and magnetic sensor 2-5,2-7 are separately fixed at the two ends on the cylinder 2-3 cylinder body, and magnetic sensor 2-6 is fixed on the centre position on the on/off switch cylinder 2-3 cylinder body.
Shown in Fig. 3,4,5, in circuit breaker draw-in groove 3-1, be placed with supporting plate 3-2, spring 3-3 fixedly is housed between the bottom of supporting plate 3-2 and draw-in groove 3-1, and the positioner slide block 3-4 that described circuit breaker draw-in groove 3-1 upward fixedly is equipped with is along sliding along a pair of positioning guide rail 3-5 that is fixed on the frame 6.
Shown in Fig. 5,6,7, promoting mainly cylinder 4-1 is fixed on the chassis base of frame 6 by cushion block, secondary push cylinder 4-2 is fixed in the secondary push cylinder holder box 4-3, the piston and the secondary push cylinder holder box 4-3 that promote mainly cylinder 4-1 are mutually permanently connected, the piston of promoting mainly cylinder 4-1 can promote to hold in the palm that box 4-3 and secondary push cylinder 4-2 are whole slides along transmitting guide rail 4-4, is fixed on slide block that secondary push cylinder holder box 4-3 bottom has a draw-in groove and transmits guide rail 4-4 and slidably be entrenched togather mutually each other; Be fixed with push pedal 4-5 on secondary push cylinder 4-2, the circuit breaker positioner is fixed on the push pedal 4-5, is promoted to slide along transmitting guide rail 4-4 by secondary push cylinder 4-2.The magnetic position-sensing switch is equipped with at the two ends of promoting mainly cylinder 4-1 and secondary push cylinder 4-2 respectively.
Shown in Fig. 8,9, the biside plate of swing pedestal 5-2 is fixed on the both sides crossbeam of testing stand section bar frame 6, and support 5-4 is fixed on the stringer board of testing stand section bar frame 6.The transverse slat of section bar frame 6 and stringer board are fixed to one another to link together.Clamping cylinder 5-1 hangs and is fixed on the swing pedestal 5-2, and the middle part of lever 5-3 is fixed on the support 5-4 by the axle of support 5-4.Lever 5-3 at the arm of force of the both sides of support 5-4 axle not on a horizontal plane.The piston rod of lever 5-3 one end and clamping cylinder 5-1 is connected with each other by movable axis, and the other end of lever 5-3 is fixed with insulation cushion 5-5, promptly is used for compressing an end that connects circuit breaker terminal and rising current transformer contact terminal at lever 5-3 and is fixed with insulation cushion 5-5; And lever 5-3 is not all laborsaving lever in the length of the arm of force of the both sides of support 5-4 axle yet, be spool the arm of force length to cylinder 5-1 piston rod a link to each other end of lever 5-3, greater than spool the length to the fixed insulation pad 5-5 one end arm of force of lever 5-3 from support 5-4 from support 5-4.
Shown in Figure 11,12,13, the utility model mechanical device includes above-mentioned step-up transformer 1, on/off switch device 2, positioner 3, conveyer 4 and hold down gag 5.Position relation and annexation between them are:
Wherein the bottom surface of the draw-in groove 3-1 of positioner 3 links to each other with the push pedal 4-5 of conveyer 4, and slides along a pair of positioning guide rail 3-4 that is fixed on the frame 6; Hold down gag 5 symmetrically arranged two clamping cylinder 5-1, the swing pedestal 5-2 that has rotating shaft, support 5-4 and lever 5-3, be placed in the both sides of the conveyer 4 of fixing positioner 3 respectively, and the end that hold down gag 5 symmetrically arranged two lever 5-3 are fixed with insulation cushion 5-5 is faced up and down each other mutually with the position of two contact terminal 1-3 of the direct-connected transformer that places the conveyer below respectively, the clamping cylinder 5-1 that has the compacted device 5 of an end of insulation cushion 5-5 as lever 5-3 promotes when downward, the contact terminal 1-3 that places the binding post of the circuit breaker in the draw-in groove 3-1 of positioner 3 and rising current transformer 1 tightly can be fastened to link together; Described on/off switch device 2 is placed in the top of hold down gag 5, and when tested circuit breaker was transmitted device 4 and is sent to the detection position in the draw-in groove 3-1 of positioner 3, the draw-in groove 2-1 of on/off switch device 2 just in time was contained in the killer switch handle in the draw-in groove 2-1.
As shown in figure 14, control device includes digital AC constant-current source and operating desk control device; Described operating desk control device includes magnetic sensor and the relay thereof on the cylinder that adopts on industrial control computer, described on/off switch device, conveyer and the hold down gag; Output to the signal input port of digital AC constant-current source by the running parameter signal of industrial control computer input port input, digital AC constant-current source output services electric current is to the input of rising current transformer; Simultaneously by industrial control computer input port running parameter signal of importing and the automatic and manual run signal of controlling each mechanical device, and the cylinder location signal that magnetic sensor produced on the cylinder that adopted of described hold down gag, conveyer and on/off switch device all is input to each corresponding input port of industrial control computer, industrial control computer according to the signal of input port input by the output port output signal to corresponding relay, the break-make that relay switches corresponding air valve realizes the action of each mechanical device cylinder.
Overall work process of the present utility model is:
At first, tested circuit breaker is placed on the positioner 3 of testing stand, the secondary push cylinder 4-2 of transmission device 4 promotes whole draw-in groove positioner 3 and slides before and after transmitting guide rail 4-4, on each detection position, when the lever 5-3 of hold down gag 5 lifts, require spring 3-3 on the positioner 3 circuit breaker in just in time can supporting and positioning device 3 unsettled, when hold down gag 5 compressed, the binding post of circuit breaker can fully contact with the contact terminal 1-3 of rising current transformer 1.
The conveyer 4 of testing stand is delivered to different detection positions automatically with circuit breaker then, initial position is to promote mainly cylinder 4-1 and secondary push cylinder 4-2 is in contraction state, after circuit breaker put into positioner 3, promote circuit breaker positioner 3 55mm that advances circuit breaker in-position one is detected by promoting mainly cylinder 4-1 earlier; Promoting mainly cylinder 4-1 then regains, simultaneously secondary push cylinder 4-2 promotes circuit breaker positioner 3 110mm that advances, circuit breaker in-position two is detected, last under the situation that secondary push cylinder 4-2 does not regain, promote mainly cylinder 4-1 and promote circuit breaker positioner 3 55mm that advances once more circuit breaker in-position three is detected; Detection finishes and promotes mainly cylinder 4-1 and secondary push cylinder 4-2 is recovered to initial position simultaneously, finishes a duty cycle.Promptly realized three different detection positions of location circuit breaker, be respectively 55mm, 110mm, 165mm apart from the distance of initial position.
Every detection position, hold down gag 5 is pressed to the respective detection binding post of circuit breaker on the output copper bar contact terminal 1-3 of direct-connected transformer 1.The initial position of hold down gag 5 is in contraction state for cylinder 5-1, and cylinder 5-1 piston pull lever 5-3 lifts; Clamping cylinder 5-1 piston promotes lever 5-3 and moves upward, and their tie point is done movement in a curve around support 5-4, and this moment, clamping cylinder 5-1 also followed camber line around swing pedestal 5-2 swing, guaranteed that instantaneous masterpiece with maximum is used on the arm of force.Lever 5-3 compresses end and by insulation cushion 5-5 the respective detection terminal of circuit breaker is pressed on the output copper bar contact terminal 1-3 of direct-connected transformer 1, and lever 5-3 is and power supply isolation insulated from each other.
On/off switch device 2 will be detained multipoint control of returning meta again to the circuit breaker handle separating brake that closes a floodgate in the testing process, the initial position of the on/off switch cylinder 2-3 of on/off switch device 2 is the centre position, locate by transducer 2-6, circuit breaker is after the position is sent into thus, and its switch knob enters in the slide block 2-2 of on/off switch device 2; The cylinder 2-3 of on/off switch device 2 promotes slide block 2-2 closes a floodgate killer switch, is located by transducer 2-5; On/off switch cylinder 2-3 regains and makes mid point make breaker open operation, is located by transducer 2-6; If circuit breaker is owing to accident is threaded off this moment, on/off switch cylinder 2-3 will continue to regain detains circuit breaker again, is located by transducer 2-7; Finish and detain cylinder again and return to meta,, promptly realize returning meta by transducer 2-6 location.
Above testing process is controlled automatically by industrial computer and is finished, and after detection was finished, on/off switch device 2 was returned meta, and hold down gag 5 unclamps and lifts, and conveyer 4 returns to initial position.
Claims (5)
1. digital full automatic breaker over-loading short cut testing test stand, include frame, it is characterized in that: also include digital AC constant-current source, the direct connecting type rising current transformer and the positioner that is used for fixing tested circuit breaker that is fixed on the frame that do not have excessive lead, be used for hold down gag that tested breaker connection terminal is communicated with the rising current transformer contact terminal, be used for each binding post of tested circuit breaker is placed conveyer above the rising current transformer position respectively, be used for tested killer switch handle is placed the on/off switch device and the control device of each test position;
Direct connecting type rising current transformer:
It includes rising current transformer, and the outlet side of described rising current transformer is fixed with output copper bar contact terminal for drawing copper bar at the end of drawing copper bar;
The on/off switch device:
It includes cylinder, magnetic sensor, the on/off switch guide rail that two electric control valves are housed, the on/off switch draw-in groove that is used to promote tested circuit breaker handle; Described on/off switch cylinder and the on/off switch guide rail that two electric control valves are housed is connected on the frame respectively; Described on/off switch draw-in groove be fixed on the above the piston rod of on/off switch cylinder of checkout gear frame and be connected mutually, and described on/off switch draw-in groove and the mutual sliding engaged of on/off switch guide rail that is fixed on the frame, three magnetic sensors are housed on the cylinder body of described on/off switch cylinder, and three magnetic sensors are separately fixed at two ends and the centre position on the on/off switch cylinder block;
Positioner:
It includes circuit breaker draw-in groove, spring and supporting plate; Described supporting plate is placed in the draw-in groove, between described supporting plate and the draw-in groove fixing spring is housed;
Hold down gag:
It includes two symmetrically arranged clamping cylinders, has swing pedestal, support and the lever of rotating shaft; Described swing pedestal and support are attached on the frame respectively, described clamping cylinder hangs and is fixed on the swing pedestal, the middle part of described lever is fixed on the support by support shaft, and an end of lever and the piston rod of described clamping cylinder be connected with each other with movable axis, and the other end of lever is a free end;
Conveyer:
It includes and promotes mainly cylinder, secondary push cylinder, transmits guide rail and secondary push cylinder holder box; The described cylinder of promoting mainly is separately fixed on the described frame with the transmission guide rail, describedly be used for promoting the circuit breaker positioner and realize that the secondary push cylinder that accurately transmits the location is fixed in the described secondary push cylinder holder box, be fixed with a push pedal that is used for fixing the positioner of circuit breaker on the described secondary push cylinder, described secondary push cylinder holder box also is fixed with a slide block that has a draw-in groove, and slide block that has draw-in groove and described transmission guide rail that secondary push cylinder holder box is connected slidably cooperatively interact together each other; The magnetic position-sensing switch is equipped with at the two ends of promoting mainly cylinder and secondary push cylinder respectively;
Control device:
Control device includes digital AC constant-current source and operating desk control device; Described operating desk control device includes magnetic sensor and the relay thereof on the cylinder that adopts on computer, described on/off switch device, conveyer and the hold down gag; Output to the signal input port of digital AC constant-current source by the running parameter signal of operating desk control device input port input, digital AC constant-current source output services electric current is to the input of rising current transformer; Simultaneously by operating desk control device input port running parameter signal of importing and the automatic and manual run signal of controlling each mechanical device, and the cylinder location signal that magnetic sensor produced on the cylinder that adopted of described hold down gag, conveyer and on/off switch device all is input to each corresponding input port of computer, fanout mouth output signal is to corresponding relay, and relay is to the make-and-break signal of the corresponding air valve output of each mechanical device cylinder;
The draw-in groove bottom surface of positioner recited above is connected mutually with the push pedal of conveyer; Symmetrically arranged two cylinders of described hold down gag, have swing pedestal, support and the lever of rotating shaft, be placed in the both sides of the conveyer that is fixed with positioner respectively, and the free end of symmetrically arranged two levers of hold down gag is faced mutually each other up and down with the position of two contact terminals of the direct-connected transformer that places conveyer below respectively; Described on/off switch device is placed in the top of hold down gag.
2. digital full automatic breaker over-loading short cut testing test stand according to claim 1 is characterized in that: the connected mode between end of drawing copper bar described in the described direct connecting type rising current transformer and output copper bar contact terminal is the phosphor-copper welding.
3. digital full automatic breaker over-loading short cut testing test stand according to claim 1, it is characterized in that: the on/off switch draw-in groove of described on/off switch device is fixed on the slide block, described slide block is connected with the piston rod of on/off switch cylinder on being fixed on the checkout gear frame, and the on/off switch guide rail that is fixed on the checkout gear frame inserts in the groove of slide block.
4. digital full automatic breaker over-loading short cut testing test stand according to claim 1, it is characterized in that: two arm of forces that are in described support shaft both sides of the lever described in the described hold down gag are not on a horizontal plane, and lever is the laborsaving lever that is uneven in length at the arm of force of support shaft both sides.
5. digital full automatic breaker over-loading short cut testing test stand according to claim 1 is characterized in that: be fixed with insulation cushion on another free end of the lever described in the described hold down gag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200273762U CN201041790Y (en) | 2006-09-21 | 2006-09-21 | Over-load break testing table for digital fully-automatic breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200273762U CN201041790Y (en) | 2006-09-21 | 2006-09-21 | Over-load break testing table for digital fully-automatic breaker |
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| Publication Number | Publication Date |
|---|---|
| CN201041790Y true CN201041790Y (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200273762U Expired - Fee Related CN201041790Y (en) | 2006-09-21 | 2006-09-21 | Over-load break testing table for digital fully-automatic breaker |
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| CN (1) | CN201041790Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898053A (en) * | 2015-06-30 | 2015-09-09 | 中华人民共和国上海浦江出入境检验检疫局 | Integrated device for large-scale low-voltage breaker high-current tests |
| CN110161352A (en) * | 2019-04-29 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | Frequency response test device and method under analogue transformer winding interturn short-circuit |
| CN114152871A (en) * | 2021-11-26 | 2022-03-08 | 国网上海市电力公司 | Automatic test platform and test method for mechanical aging characteristics of circuit breaker |
-
2006
- 2006-09-21 CN CNU2006200273762U patent/CN201041790Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104898053A (en) * | 2015-06-30 | 2015-09-09 | 中华人民共和国上海浦江出入境检验检疫局 | Integrated device for large-scale low-voltage breaker high-current tests |
| CN104898053B (en) * | 2015-06-30 | 2017-12-15 | 中华人民共和国上海浦江出入境检验检疫局 | A kind of integrated apparatus of large-scale low-voltage circuit breaker cranking test |
| CN110161352A (en) * | 2019-04-29 | 2019-08-23 | 云南电网有限责任公司电力科学研究院 | Frequency response test device and method under analogue transformer winding interturn short-circuit |
| CN114152871A (en) * | 2021-11-26 | 2022-03-08 | 国网上海市电力公司 | Automatic test platform and test method for mechanical aging characteristics of circuit breaker |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |