CN103983917B - Miniature circuit breaker instantaneous action characteristic test bed and test method thereof - Google Patents

Miniature circuit breaker instantaneous action characteristic test bed and test method thereof Download PDF

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Publication number
CN103983917B
CN103983917B CN201410232301.7A CN201410232301A CN103983917B CN 103983917 B CN103983917 B CN 103983917B CN 201410232301 A CN201410232301 A CN 201410232301A CN 103983917 B CN103983917 B CN 103983917B
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China
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breaker
test
circuit breaker
testing
miniature circuit
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CN201410232301.7A
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CN103983917A (en
Inventor
刘建
周超
纪峰
田正其
穆小星
鲍进
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Electric Power Research Institute of State Grid Jiangsu Electric Power Co Ltd
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Abstract

The invention discloses a miniature circuit breaker instantaneous action characteristic test bed and a test method of the miniature circuit breaker instantaneous action characteristic test bed. The test bed comprises a feeding mechanism, a clamping mechanism, a test mechanism and a switching-on mechanism; the clamping mechanism is used for clamping a circuit breaker to be tested; the feeding mechanism is used for horizontally conveying the clamping mechanism clamping the circuit breaker to the test position in the test mechanism; the test mechanism comprises two sets of test terminals which are symmetrically arranged in an upper and lower mode and can vertically and oppositely move, and the test terminals oppositely move to be communicated with contactors on the upper side and the lower side of the circuit breaker at the test position to form a test loop; the switching-on mechanism is arranged above or below a circuit breaker switch blade at the test position and comprises a switching-on board which can move in the switching-on direction of the switch blade, and the switching-on board is used for pushing the circuit breaker switch blade to perform switching on. The miniature circuit breaker instantaneous action characteristic test bed can replace manual operation and automatically complete test actions, and whether circuit breaker is a qualified product is judged according to the instantaneous action characteristic of the circuit breaker to be tested.

Description

A kind of miniature circuit breaker snap action features Testbed and its method of testing
Technical field
The present invention relates to a kind of miniature circuit breaker snap action features Testbed and its method of testing, belong to miniature circuit breaker Temporal properties intelligence test field.
Background technology
Miniature circuit breaker is a kind of protector being widely used in industrial automation and building industry low-voltage distribution system.With National Industrial automation and building industry iterative method, increasing miniature circuit breaker has been put in live operation.Existing Miniature circuit breaker service data show, the conventional detection carrying out according to technical standard ensure that small-sized open circuit to a certain extent The supply of material quality of device, but cannot exclude in miniature circuit breaker hidden failure, such as:Disjunction, breaking current value are unstable by mistake Deng these faults probably belong to what miniature circuit breaker inaccurate test in the case of conventionally test caused.Once occurring, just cannot Effective protection is carried out to residing distribution system, cuts off rapidly circuit, then caused consequence is very serious.
Miniature circuit breaker snap action characteristic, more artificial than more conventional detection means is exactly at present, it is related to manually adjust electricity Stream size, rule of thumb judges adjustment voltage, need to may repeatedly adjust several times and need artificial cognition disjunction, high labor intensive, Skill requirement is high, leads to data mistake and is difficult to find or chances on, probability of happening ratio is relatively low, and is difficult to reappear, finally Lead to that same batch products temporal properties are abnormal to dispatch from the factory, terminal use is caused with loss difficult to the appraisal.
Content of the invention
It is an object of the invention to provide a kind of test that automatically can effectively judge miniature circuit breaker snap action characteristic Platform and method of testing.
For solving above-mentioned technical problem, the present invention provides one kind to be based on miniature circuit breaker snap action features Testbed and survey Miniature circuit breaker temporal properties can be tested and data analysis by method for testing, special by the snap action of breaker to be measured Property judges whether it is certified products.
A kind of miniature circuit breaker snap action features Testbed it is characterised in that:Including feed mechanism, clamp system, survey Test-run a machine structure and switching-on mechanism;
Described clamp system is used for breaker clamping to be tested;
Described feed mechanism is used for for the clamp system level of clamping breaker delivering to the test position in mechanism for testing;
Mechanism for testing include setting symmetrical above and below and can relative vertical movement two groups of calibrating terminals, calibrating terminal relatively fortune Move and connect with the contact of the upper and lower both sides of the breaker at test position, form test loop;
Switching-on mechanism is arranged on above or below breaker plug-in strip in test position, can be towards plug-in strip combined floodgate side including one To the combined floodgate plate of motion, breaker plug-in strip is promoted to close a floodgate by combined floodgate plate.
Described clamp system includes the feed box of a receiving breaker, arranges one by air cylinder driven towards the side of feed box The clamping head of motion, breaker is clamped between clamping head and the side wall of feed box.
Described mechanism for testing includes two pieces of test boards of setting symmetrical above and below, and every piece of test board arranges test described in a group Terminal, every group of calibrating terminal is moved forward and backward along test board in the horizontal direction by a regulation air cylinder driven;Every piece of test board by One vertical cylinder drives vertical movement, drives the calibrating terminal on test board towards breaker motion to be tested.
Number of contacts on the quantity of every group of calibrating terminal in described mechanism for testing, arrangement position and breaker to be tested Amount, arrangement position are corresponding one by one.
Described combined floodgate plate is towards the how much raised fore-set of the surface setting of plug-in strip, described fore-set quantity and open circuit to be tested Plug-in strip quantity on device is identical.
Described feed mechanism, clamp system, mechanism for testing and switching-on mechanism are by PLC control action.
Based on the method for testing of the miniature circuit breaker snap action features Testbed described in claim 1, survey including following Try is rapid:
Step 1:Breaker to be tested is put into feed box, breaker to be measured is clamped by clamp system, feed mechanism will be treated Survey breaker level and deliver to mechanism for testing, be located at the calibrating terminal of the upper and lower both sides of breaker to be measured in mechanism for testing by driving machine Structure drives and is moved, and connects formation test loop with the contact of breaker both sides to be measured;Switching-on mechanism action is so as to be measured Breaker is in "on" position;
Step 2:According to standard GB 10963.1-2005, to the low-grade electric current I of breaker input to be measuredlowIf, in mark Quasi- stipulated time t inner breaker tripping operation, then this breaker defective work;If breaker does not trip, this breaker initial survey closes Lattice;
Step 3:The qualified breaker of initial survey is judged for step 2, then inputs high tap position electric current I to ithighIf, in mark In the time t of quasi- regulation, this circuit breaker trip is then certified products;If do not tripped, it is defective work.
Method of testing concrete operations can be divided into following steps:
1) rated current according to test product and verification multiple, determine the size of rated current, system automatically selects accordingly Electric current gear.
2) test product is put into test fixture, can automatically test product be detected by one-shot switch test bed, test product should In default action current and reliable disjunction in the time.
3) establishing method of lower limit operating characteristic is identical with upper limit acting characteristic establishing method.And except for the difference that the upper limit is The acting characteristic of test test product, lower limit is the operating characteristic of test test product, according to test product non-operating current setting value, test examination Product are failure to actuate in non-operating current value with the time of being failure to actuate.
4)After obtaining action current and the non-operating current of test product, you can similar test product is carried out with acting characteristic and is failure to actuate Characteristic test.Reached a conclusion by after microprocessor system process test data.
The beneficial effect that the present invention is reached:
The miniature circuit breaker snap action features Testbed of the present invention, can replace artificial operation, be automatically performed test dynamic Make, miniature circuit breaker temporal properties can be tested automatically, judge that it is by the snap action characteristic of breaker to be measured No is certified products.The method of testing of the present invention can effectively judge miniature circuit breaker snap action characteristic.
Brief description
Fig. 1 is the Organization Chart of the present invention;
Fig. 2 is the feeding and clamping mechanism in Fig. 1;
Fig. 3 is the mechanism for testing in Fig. 1;
Fig. 4 is the automatic closing mechanism in Fig. 1;
Fig. 5 is control section schematic diagram in data system;
Fig. 6 is inside and outside microprocessor system figure;
Fig. 7 is the schematic flow sheet of test snap action characteristic.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention Technical scheme, and can not be limited the scope of the invention with this.
As Figure 1-Figure 4, the testing stand of the present invention includes feed mechanism 1, clamp system 2, mechanism for testing 3 and closes a floodgate Mechanism 4.
Clamp system 2 includes the feed box 21 of receiving breaker to be measured 100, arranges one by gas towards the side of feed box The clamping head 23 of cylinder 22 powered motion, breaker 100 can be clamped between clamping head and the side wall of feed box.
Feed mechanism 1 drives clamp system 2 integral level to move to the test position of mechanism for testing 3.
Mechanism for testing 3 includes two pieces of test boards 31 of setting symmetrical above and below, and clamp system 2, feed mechanism 1 are respectively positioned on up and down In space between two pieces of test boards, clamp and deliver in mechanism for testing 3 for breaker 100 just to be tested and surveyed Examination.One group of calibrating terminal 32 is arranged on every piece of test board 31, every group of calibrating terminal 32 adjusts the test of cylinder 33 drives edge by one Plate 31 moves forward and backward in the horizontal direction, thus adjusting every group of calibrating terminal 32 and contact 101 position of breaker 100 to be tested Correspond.Every piece of test board 31 is driven by a vertical cylinder 34 and is vertically movable, thus driving the test on test board 31 Terminal 32 is near breaker 100 to be tested, until contacting with the contact 101 on breaker 100, forms test loop.
Outside the calibrating terminal that switching-on mechanism 4 is arranged below, it is driven up the conjunction of motion by upper top gas cylinder 41 including one Flashboard 42, the underface of the plug-in strip 102 that combined floodgate plate 42 is located on breaker 100 to be tested.When combined floodgate plate 42 moves upwards, promote Plug-in strip 102 on breaker 100 moves upwards, realizes the combined floodgate of breaker 100.Combined floodgate plate 42 is many towards the surface setting of plug-in strip Few raised fore-set 43, fore-set 43 quantity is identical with plug-in strip 102 quantity on breaker 100 to be tested
Feed mechanism 1, clamp system 2, mechanism for testing 3 and switching-on mechanism 4 are by PLC control action.
Ensure to be in combined floodgate when test product test starts by automatic closing mechanism 4, can not shut down to be measured simultaneously Examination breaker is repeatedly tested.
Breaker to be tested is put in mechanism for testing 3, by one-shot switch, testing stand can be automatically to open circuit to be tested Device is detected, in default action current and reliable disjunction in the time.
As shown in figure 5, the regulation that control system carries out pressure regulator module voltage is realized by PLC, supervised by real-time voltage The feedback surveying module enters the regulation of line output voltage;Realize the output of high current by the security transformer of invariable power, low-voltage, Quickly can be shown by crest ammeter during it, and by real-time current monitoring modular, output current value is anti-again It is fed back to PLC to be controlled;By PLC, the action control of the feed mechanism on testing stand, clamp mechanism, mechanism for testing is realized producing The detection of product, and qualification judgement is carried out by the product that internal current detector unit completes to test.
Further, as shown in fig. 6, data interaction is carried out by computer data processing system and PLC real-time control system, profit The jumbo data be connected with the high-speed data computing capability of computer data processing system and with computer data processing system is real When the realization such as storage system, Ethernet remote data transmission and monitoring system of realizing to circuit breaker temporal properties to be tested Drawing of Curve with automatically analyze, complete the data system that conventional PLC cannot process and judge.
As shown in fig. 7, flow process is judged to the test of miniature circuit breaker snap action:
Step 1:Open device power supply (DPS), and set test electric current and breaker number of poles;
Step 2:Breaker to be tested is put into feed box, breaker to be measured is clamped by clamp system, afterwards feed mechanism Breaker level to be measured is delivered to mechanism for testing, in mechanism for testing, air cylinder driven is located at the test of the upper and lower both sides of breaker to be measured Terminal is connected with the contact of breaker both sides to be measured, and then switching-on mechanism action is so that breaker to be measured is in "on" position;
Step 3:According to standard GB 10963.1-2005, to the low-grade electric current I of breaker input to be measuredlowIf, in mark Quasi- stipulated time t inner breaker tripping operation, then this breaker defective work;If breaker does not trip, this breaker initial survey closes Lattice;
Step 4:Step 3 judge breaker to be measured pass through low-grade electric current qualified when, then input high tap position electric current I to ithigh, If this circuit breaker trip in the time t that standard specifies, it is certified products;If do not tripped, this breaker is defective work.
The required electric current of test is provided by constant-current source.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art For member, on the premise of without departing from the technology of the present invention principle, some improvement can also be made and deform, these improve and deform Also should be regarded as protection scope of the present invention.

Claims (6)

1. a kind of miniature circuit breaker snap action features Testbed it is characterised in that:Including feed mechanism, clamp system, test Mechanism and switching-on mechanism;
Described clamp system is used for breaker clamping to be tested;
Described feed mechanism is used for for the clamp system level of clamping breaker delivering to the test position in mechanism for testing;
Mechanism for testing include symmetrical above and below setting and can relative vertical movement two groups of calibrating terminals, calibrating terminal relative motion and The contact connection of the upper and lower both sides of the breaker at test position, forms test loop;
Switching-on mechanism is arranged on above or below breaker plug-in strip in test position, can transport towards plug-in strip combined floodgate direction including one Dynamic combined floodgate plate, promotes breaker plug-in strip to close a floodgate by combined floodgate plate;
Described clamp system includes the feed box of a receiving breaker, is moved towards the side setting one of feed box by air cylinder driven Clamping head, breaker is clamped between clamping head and the side wall of feed box.
2. miniature circuit breaker snap action features Testbed according to claim 1 it is characterised in that:Described mechanism for testing Including two pieces of test boards of setting symmetrical above and below, every piece of test board arranges calibrating terminal described in a group, every group of calibrating terminal is equal Moved forward and backward in the horizontal direction along test board by a regulation air cylinder driven;Every piece of test board drives vertical fortune by a vertical cylinder Dynamic, drive the calibrating terminal on test board towards breaker motion to be tested.
3. miniature circuit breaker snap action features Testbed according to claim 1 it is characterised in that:Described mechanism for testing In the quantity of every group of calibrating terminal, arrangement position relative one by one with the number of contacts on breaker to be tested, arrangement position Should.
4. miniature circuit breaker snap action features Testbed according to claim 1 it is characterised in that:Described combined floodgate plate court To the fore-set how much raised the surface setting of plug-in strip is, described fore-set quantity is identical with the plug-in strip quantity on breaker to be tested.
5. the miniature circuit breaker snap action features Testbed according to any one in claim 1-4, its feature exists In:Described feed mechanism, clamp system, mechanism for testing and switching-on mechanism are by PLC control action.
6. the method for testing based on the miniature circuit breaker snap action features Testbed described in claim 1 it is characterised in that:Bag Include following testing procedure:
Step 1:Breaker to be tested is put into feed box, breaker to be measured is clamped by clamp system, feed mechanism will be to be measured disconnected Road device level delivers to mechanism for testing, and the calibrating terminal being located at the upper and lower both sides of breaker to be measured in mechanism for testing is driven by drive mechanism Move and moved, connect formation test loop with the contact of breaker both sides to be measured;Switching-on mechanism action is so that open circuit to be measured Device is in "on" position;
Step 2:According to standard GB 10963.1-2005, to the low-grade electric current I of breaker input to be measuredlowIf, in standard gauge T inner breaker of fixing time trips, then this breaker defective work;If breaker does not trip, this breaker initial survey is qualified;
Step 3:The qualified breaker of initial survey is judged for step 2, then inputs high tap position electric current I to ithighIf, in standard gauge In fixed time t, this circuit breaker trip is then certified products;If do not tripped, it is defective work.
CN201410232301.7A 2014-05-29 2014-05-29 Miniature circuit breaker instantaneous action characteristic test bed and test method thereof Active CN103983917B (en)

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CN104251974B (en) * 2014-09-04 2017-04-12 浙江正泰电器股份有限公司 Circuit breaker residual current operating characteristic detection level adjusting mechanism and detection mechanism
CN104656048B (en) * 2014-09-26 2018-08-10 天津电气科学研究院有限公司 A kind of calibration method of switch action characteristic testing stand
CN104931875B (en) * 2015-06-15 2018-06-19 国家电网公司 Based on on-load switch electric life, mechanical life acting characteristic experimental rig
CN105319499B (en) * 2015-09-18 2018-08-21 温州深科检测设备有限公司 A kind of positioning system of miniature circuit breaker overload protection automatic detection production line
CN106324491A (en) * 2016-08-11 2017-01-11 国网重庆市电力公司电力科学研究院 High acceleration test failure platform for load switch for electric energy meter and testing method
CN106772001B (en) * 2016-11-28 2019-09-20 温州大学 Large capacity low-voltage circuit breaker snap action characteristic testing equipment
CN107450015B (en) * 2017-06-13 2020-11-10 国网湖南省电力公司 Intelligent miniature circuit breaker driving capacity test method and device

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CN202948108U (en) * 2012-12-07 2013-05-22 温州奔龙自动化科技有限公司 Apparatus for automatically detecting transient characteristic of breaker
CN203950021U (en) * 2014-05-29 2014-11-19 国家电网公司 A kind of miniature circuit breaker snap action attribute testing platform

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1648679A (en) * 2004-12-31 2005-08-03 河北工业大学 Test device for small breaker reliability
CN2804875Y (en) * 2005-06-16 2006-08-09 郭红建 Novel measuring means
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