CN212229107U - AC contactor electric service life test device based on large-capacity electronic accompanying test article - Google Patents
AC contactor electric service life test device based on large-capacity electronic accompanying test article Download PDFInfo
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- CN212229107U CN212229107U CN202021584877.7U CN202021584877U CN212229107U CN 212229107 U CN212229107 U CN 212229107U CN 202021584877 U CN202021584877 U CN 202021584877U CN 212229107 U CN212229107 U CN 212229107U
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Abstract
The utility model relates to an ac contactor electricity life test device based on large capacity electron accompanies article of trying on. Three-phase alternating current divides two branch roads behind first circuit breaker, a branch road connects to the input of first electron companion's article through the fuse combination, another branch road connects to the input of second electron companion's article after through the second circuit breaker, 1/6Ue transformer step-down, the output of first electron companion's article and the output of second electron companion's article connect in parallel, connect to a loop contactor test article group, a loop adjustable impedance load circuit is connected to the rear end of a loop contactor test article group, the parallel terminal of the output of first electron companion's article and the output of second electron companion's article connects in succession still connects to two loop adjustable impedance load circuit through two loop contactor test article groups. Because the two loops are provided with two sets of adjustable impedance load circuits, test currents with different current specifications and different power factors can be adjusted, and the purpose that test samples with different current specifications are tested in one test period is facilitated.
Description
Technical Field
The utility model relates to an ac contactor electricity life test device based on large capacity electron accompanies article of trying on.
Background
The sampling schemes of double three tests and single eight tests of the contactor electric service life test need to be respectively input into 3 and 8 test articles once, and the power supply capacity is required to be large. However, in the case of a large number of types of ac contactor products and different types of test products and test currents, if it is desired to reduce the test time, a plurality of test devices need to be provided, which results in high test cost. The existing 'ac contactor life test device and control method' with patent number 201110152601.0 adopts alternate cycle test technology to test a plurality of test articles in turn in a single cycle test, thereby ensuring that only one test article is subjected to on-off current operation test at a certain time, and in a whole test flow, the single cycle test is taken as a unit to complete a specified number of action cycle tests without prolonging the test time. The drawbacks of this alternative control technique are: when the alternating cycle test is carried out on a test article, the electric service life test can be carried out only on the alternating current contactor with one test current specification, and the test efficiency is low.
Disclosure of Invention
In view of this, the present invention provides an ac contactor electrical life testing apparatus based on a large-capacity electronic accompanying test article, which is capable of conveniently implementing a time-sharing test for test articles with different current specifications in a test period by adding a set of adjustable impedance load and a control loop under the condition that the original power capacity and equipment are not changed.
In order to achieve the above purpose, the utility model adopts the AC contactor electric life test device based on the large-capacity electronic accompanying test article, which comprises a first circuit breaker, a second circuit breaker, an 1/6Ue transformer, a first electronic accompanying test article, a second electronic accompanying test article, a loop contactor test article group, a two-loop contactor test article group, a loop adjustable impedance load and a two-loop adjustable impedance load, wherein three-phase AC is divided into two branches after passing through the first circuit breaker, one branch is connected to the input end of the first electronic accompanying test article through a fuse combination, the other branch is connected to the input end of the second electronic accompanying test article after being stepped down through the second circuit breaker and a 1/6Ue transformer, the output end of the first electronic accompanying test article is connected to the output end of the second electronic accompanying test article in parallel, the loop contactor test article group is connected, the rear end of the loop contactor test article group is connected with the loop adjustable impedance load circuit, the parallel connection line ends of the output end of the first electronic accompanying test article and the output end of the second electronic accompanying test article are also connected to the two-loop adjustable impedance load circuit through the two-loop contactor test article group. Compared with the prior art, the invention has the beneficial technical effects that: through the structure, because the two loops provide two sets of adjustable impedance load circuits, the two sets of adjustable impedance load circuits can adjust test currents with different current specifications and different power factors, so that test of test articles with different current specifications in one test period is conveniently realized, the test efficiency is improved, and the test cost is also reduced.
Particularly, the AC contactor electric service life test device based on the large-capacity electronic accompanying test article also comprises
The high-speed data acquisition card is used for detecting coil voltage, coil current, test voltage and test current;
the digital signal input circuit is used for detecting the switch states of the auxiliary contacts of the test articles in the first loop contactor test article group and the second loop contactor test article group;
the digital signal output circuit controls the solid state relay group to respectively drive the first electronic accompanying test article, the second electronic accompanying test article, the first loop contactor test article group and the second loop contactor test article group to be switched on or switched off through the output interlocking circuit and the output isolation circuit;
a loop large current detection mutual inductor, a loop small current detection mutual inductor, a secondary loop large current detection mutual inductor and a secondary loop small current detection mutual inductor with more than one transformation ratio;
and an industrial control computer for driving the test articles in the first loop contactor test article group and the second loop contactor test article group through the digital signal output circuit, the switch-on and switch-off are carried out according to the test action mode required by AC3 or AC4, the industrial control computer receives the signal input from the high-speed data acquisition card and the digital signal input circuit, outputs the control signal to the digital signal output circuit, and the transformation ratio switching module of a loop large current detection mutual inductor, the transformation ratio switching module of a loop small current detection mutual inductor, the transformation ratio switching module of a two-loop large current detection mutual inductor and the transformation ratio switching module of a two-loop small current detection mutual inductor are driven by a silicon controlled control circuit to respectively realize transformation ratio switching on the loop large current detection mutual inductor, the loop small current detection mutual inductor, the two-loop large current detection mutual inductor and the two-loop small current detection mutual inductor.
Particularly, a loop large current detection mutual inductor is arranged in a connecting line of a first electronic accompanying test article and a loop contactor test article group in a penetrating manner, a loop small current detection mutual inductor is arranged in a connecting line of a second electronic accompanying test article and a loop contactor test article group in a penetrating manner, a two-loop large current detection mutual inductor is arranged in a connecting line of a first electronic accompanying test article and a two-loop contactor test article group in a penetrating manner, and a two-loop small current detection mutual inductor is arranged in a connecting line of a second electronic accompanying test article and a two-loop contactor test article group in a penetrating manner. Through adopting above structure, a return circuit heavy current detects transformer, a return circuit undercurrent and detects transformer, two return circuits heavy current and detect transformer and two return circuits undercurrent and detect the transformer and all have the transformation ratio of a plurality of gears, can guarantee data acquisition's accuracy.
Drawings
FIG. 1 is an electrical diagram of an embodiment of the present invention;
FIG. 2 is a block diagram of a first part of the control principle in the embodiment of the present invention;
FIG. 3 is a block diagram of a second part of the control principle in the embodiment of the present invention;
fig. 4 is a block diagram of a third part of the control principle in the present embodiment.
Detailed Description
As shown in figure 1, an alternating current contactor electric life test device based on a large-capacity electronic accompanying test article comprises a first breaker QF1, a second breaker QF2, a 1/6Ue transformer T, a first electronic accompanying test article KS1, a second electronic accompanying test article KS2, a loop contactor test article group 2, a second loop contactor test article group 3, a loop adjustable impedance load and a two-loop adjustable impedance load, three-phase alternating currents L1, L2 and L3 are divided into two branches after passing through the first breaker QF1, one branch is connected to the input end of the first electronic accompanying test article KS1 through a fuse combination, the other branch is connected to the input end of the second electronic accompanying test article KS2 after being stepped down through the second breaker QF2 and the 1/6Ue transformer T, the output end of the first electronic accompanying test article KS1 is connected to the output end of the loop contactor test article group 2 after being connected to the output end of the loop adjustable impedance load circuit of the second electronic accompanying test article KS2, the parallel connection terminal of the output terminal of the first electronic test article KS1 and the output terminal of the second electronic test article KS2 is also connected to a two-loop adjustable impedance load circuit through a two-loop contactor test article group 3. Here, the primary loop contactor sample group includes contactors SP 1-SP 3, the secondary loop contactor sample group includes contactors SP 4-SP 6, the primary loop adjustable impedance load provides load for the primary loop contactor sample group 2, and the secondary loop adjustable impedance load provides load for the secondary loop contactor sample group 3.
As shown in fig. 2, 3 and 4, the ac contactor electric life test device based on the large-capacity electronic accompanying test article further comprises
The high-speed data acquisition card 7 is used for detecting coil voltage, coil current, test voltage and test current;
the digital signal input circuit 6 is used for detecting the switch states of the auxiliary contacts of the test products in the first loop contactor test product group 2 and the second loop contactor test product group 3;
the digital signal output circuit 8 controls the solid relay group 83 to respectively drive the first electronic accompanying test article KS1, the second electronic accompanying test article KS2, the first loop contactor test article group 2 and the second loop contactor test article group 3 to be switched on or switched off through the output interlocking circuit 81 and the output isolation circuit 82;
a loop large current detection transformer 1TA1, a loop small current detection transformer 1TA2, a two-loop large current detection transformer 2TA1 and a two-loop small current detection transformer 2TA2 with more than one transformation ratio;
and an industrial control computer 1, the industrial control computer 1 drives the test articles in the primary loop contactor test article group 2 and the secondary loop contactor test article group 3 through a digital signal output circuit 8, and performs on-off or on-off according to a test action mode required by AC3 or AC4, the industrial control computer 1 receives signal input from a high-speed data acquisition card 7 and a digital signal input circuit 6, outputs a control signal to the digital signal output circuit 8, and drives a primary loop large current detection transformer transformation ratio switching module 8a, a primary loop small current detection transformer transformation ratio switching module 8b, a secondary loop large current detection transformer transformation ratio switching module 8c and a secondary loop small current detection transformer transformation ratio switching module 8d to respectively realize transformation ratio switching on a primary loop large current detection transformer 1TA1, a primary loop small current detection transformer 1TA2, a secondary loop large current detection transformer 2TA1 and a secondary loop small current detection transformer 2TA 2.
Here, the transformation ratios of the primary large current detection transformer 1TA1 are 7500/5, 2000/5 and 500/5, the transformation ratios of the primary small current detection transformer 1TA2 are 750/5, 200/5 and 50/5, the transformation ratios of the secondary large current detection transformer 2TA1 are 1500/5, 500/5 and 150/5, and the transformation ratios of the secondary small current detection transformer 2TA2 are 250/5, 75/5 and 25/5.
A loop heavy current detection mutual-inductor 1TA1 wears to arrange in the connecting wire of first electron accompanying article KS1 and a loop contactor article group 2, a loop small current detection mutual-inductor 1TA2 wears to arrange in the connecting wire of second electron accompanying article KS2 and a loop contactor article group 2, two return circuits heavy current detection mutual-inductor 2TA1 wears to arrange in the connecting wire of first electron accompanying article KS1 and two return circuits contactor article group 3, two return circuits small current detection mutual-inductor 2TA2 wears to arrange in the connecting wire of second electron accompanying article KS2 and two return circuits contactor article group 3.
Claims (3)
1. The utility model provides a test device of ac contactor electricity life-span based on article are accompanied to large capacity electron, its characterized in that: comprises a first circuit breaker, a second circuit breaker, an 1/6Ue transformer, a first electronic accompanying test article, a second electronic accompanying test article, a loop contactor test article group, a second loop contactor test article group, a loop adjustable impedance load and a second loop adjustable impedance load, wherein three-phase alternating current is divided into two branches after passing through the first circuit breaker, one branch is connected to the input end of the first electronic accompanying test article through a fuse combination, the other branch is connected to the input end of the second electronic accompanying test article after being subjected to voltage reduction through the second circuit breaker and a 1/6Ue transformer, the output end of the first electronic accompanying test article is connected with the output end of the second electronic accompanying test article in parallel, the circuit is connected to a loop contactor test article group, the rear end of the loop contactor test article group is connected with a loop adjustable impedance load circuit, and the parallel connection line ends of the output end of the first electronic accompanying test article and the output end of the second electronic accompanying test article are also connected to a second loop adjustable impedance load circuit through a second loop contactor test article group.
2. The AC contactor electric life test device based on the large-capacity electronic accompanying test article as claimed in claim 1, wherein: AC contactor electric life test device based on large capacity electron accompany examination article still includes
The high-speed data acquisition card is used for detecting coil voltage, coil current, test voltage and test current;
the digital signal input circuit is used for detecting the switch states of the auxiliary contacts of the test articles in the first loop contactor test article group and the second loop contactor test article group;
the digital signal output circuit controls the solid state relay group to respectively drive the first electronic accompanying test article, the second electronic accompanying test article, the first loop contactor test article group and the second loop contactor test article group to be switched on or switched off through the output interlocking circuit and the output isolation circuit;
a loop large current detection mutual inductor, a loop small current detection mutual inductor, a secondary loop large current detection mutual inductor and a secondary loop small current detection mutual inductor with more than one transformation ratio;
and an industrial control computer for driving the test articles in the first loop contactor test article group and the second loop contactor test article group through the digital signal output circuit, the switch-on and switch-off are carried out according to the test action mode required by AC3 or AC4, the industrial control computer receives the signal input from the high-speed data acquisition card and the digital signal input circuit, outputs the control signal to the digital signal output circuit, and the transformation ratio switching module of a loop large current detection mutual inductor, the transformation ratio switching module of a loop small current detection mutual inductor, the transformation ratio switching module of a two-loop large current detection mutual inductor and the transformation ratio switching module of a two-loop small current detection mutual inductor are driven by a silicon controlled control circuit to respectively realize transformation ratio switching on the loop large current detection mutual inductor, the loop small current detection mutual inductor, the two-loop large current detection mutual inductor and the two-loop small current detection mutual inductor.
3. The AC contactor electric life test device based on the large-capacity electronic accompanying test article as claimed in claim 2, wherein: a loop heavy current detection mutual-inductor wears to arrange in the connecting wire that first electron was accompanied the test article and a loop contactor test article group, and a loop low current detection mutual-inductor wears to arrange in the connecting wire that second electron was accompanied the test article and a loop contactor test article group, and two loop heavy current detection mutual-inductors wear to arrange in the connecting wire that first electron was accompanied the test article and two loop contactor test article groups, and two loop low current detection mutual-inductors wear to arrange in the connecting wire that second electron was accompanied the test article and two loop contactor test article groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021584877.7U CN212229107U (en) | 2020-08-03 | 2020-08-03 | AC contactor electric service life test device based on large-capacity electronic accompanying test article |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021584877.7U CN212229107U (en) | 2020-08-03 | 2020-08-03 | AC contactor electric service life test device based on large-capacity electronic accompanying test article |
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| CN212229107U true CN212229107U (en) | 2020-12-25 |
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| CN202021584877.7U Active CN212229107U (en) | 2020-08-03 | 2020-08-03 | AC contactor electric service life test device based on large-capacity electronic accompanying test article |
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