CN219871663U - Parallel test equipment for circuit breaker - Google Patents
Parallel test equipment for circuit breaker Download PDFInfo
- Publication number
- CN219871663U CN219871663U CN202223003287.2U CN202223003287U CN219871663U CN 219871663 U CN219871663 U CN 219871663U CN 202223003287 U CN202223003287 U CN 202223003287U CN 219871663 U CN219871663 U CN 219871663U
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- circuit breaker
- parallel
- breakpoint detection
- breakpoint
- detection
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- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model provides a circuit breaker parallel test device, which comprises: a constant current source for supplying a current to the test circuit; the test circuit includes: at least two breakpoint detection branches; wherein the breakpoint detection branches are connected in series; the loop detection branch is connected in parallel with the breakpoint detection branch and is used for detecting current on a loop; the parallel testing equipment for the circuit breaker can realize parallel automatic testing of the circuit breaker on a large scale at one time, does not need manual intervention, and improves testing efficiency and testing accuracy.
Description
Technical Field
The utility model belongs to the technical field of circuit breaker testing, and particularly relates to parallel testing equipment for a circuit breaker.
Background
In the circuit breaker testing process, the existing testing technology is to apply corresponding current to a single circuit breaker for testing, and the testing process steps of the circuit breaker are more, so that the testing time for completing batch products is longer, the testing efficiency is low, and the production efficiency of the circuit breaker is seriously affected.
Disclosure of Invention
In view of the foregoing problems of the prior art, the present utility model provides a circuit breaker parallel test apparatus, the test apparatus comprising:
a constant current source for supplying a current to the test circuit;
the test circuit includes:
at least two breakpoint detection branches; wherein the breakpoint detection branches are connected in series;
and the loop detection branch is connected in parallel with the breakpoint detection branch and is used for detecting the current on the loop.
Preferably, the breakpoint detection branch comprises a first breakpoint detection branch and a second breakpoint detection branch:
the first breakpoint detection branch comprises:
a first circuit breaker;
a first switch connected in parallel with the first circuit breaker;
the first breakpoint detection module is connected with the first circuit breaker in parallel and is used for detecting the first circuit breaker.
Preferably, the second breakpoint detection branch includes
A second circuit breaker;
a second switch connected in parallel with the second circuit breaker;
and the second breakpoint detection module is connected with the second circuit breaker in parallel and is used for detecting the second circuit breaker.
Preferably, the loop detection branch is connected in parallel with the second breakpoint detection branch.
Preferably, a detection signal is sent to a loop at the first breakpoint detection module, and if the second breakpoint detection module detects the detection signal, the first circuit breaker and the second circuit breaker are not disconnected;
and if the second detection module does not detect the detection signal, the first circuit breaker is not disconnected, and the second circuit breaker is disconnected.
Preferably, the first switch and the second switch each comprise a relay.
The beneficial technical effects of the utility model are as follows:
1. automatic testing of the large-scale circuit breaker is realized, and the testing efficiency is greatly improved;
2. the test process adopts unattended test, thus releasing the manpower and saving the labor cost;
3. the large-scale circuit breaker is tested in a serial connection mode, so that the requirement on the power of a power supply is greatly reduced;
4. the breakpoint detection unit is used for realizing the rapid detection and recovery of the breakpoints;
5. the system adopts a high-precision clock to time, and improves the accuracy of system timing.
Drawings
FIG. 1 is a schematic block diagram of a test apparatus provided by an embodiment of the present utility model;
fig. 2 is a system block diagram of a test apparatus according to an embodiment of the present utility model.
Detailed Description
The device for parallel testing of the large-scale circuit breaker has the advantages of high testing speed, high accuracy and low possibility of error, and can realize the testing of the large-scale circuit breaker.
Referring to fig. 1-2, in an embodiment of the present utility model, a testing device for parallel detection of circuit breakers is provided in the present utility model; the test apparatus includes: the device comprises a power supply control unit, a breakpoint detection unit, an interface adaptation unit and a computer control unit.
The power supply control unit adopts measures such as switch and relay series control, shunt detection, digital meter display, fuse overcurrent protection, external hole detection and the like to monitor and protect the power supply of the circuit breaker and ensure the test safety of the tested product.
The interface adapting unit is a hub for exchanging signals between the testing unit and the tested product, and provides an interactive interface between the tested signal and the testing resource. The method is realized by adopting a large-scale relay array, and pins of the large-scale circuit breaker are connected in series through an internal connection relationship, so that the collection and distribution of the tested signals are completed.
The break point detection module is used for detecting and recovering break points of the serial circuit of the large-scale breaker and reporting the break point positions and the break time to the computer control unit in a bus mode;
the computer control unit is used for scheduling the test resources and controlling the test flow, and analyzing and processing the test data.
Specifically, the circuit breakers are operated in series during the test, the circuit breakers are excited by the power supply control unit to provide power for the circuit breakers in series, and the breakpoint detection unit is used for detecting the operating states of the circuit breakers and the operating states of the circuit.
In other embodiments of the present utility model, 2 high-power relays are disposed at the positive and negative terminals of the current source, two ends of each tested piece are respectively connected in parallel with the breakpoint detection module, and loop detection circuits are added at two ends of the tested piece connected with the negative terminal of the current source for rapidly checking the on-off condition of the circuit.
Specifically, the workflow of the test is as follows:
step 1: before power-up, the system controls the breakpoint detection module to be in an isolated state with the tested piece;
step 2: after the self-detection is passed, the system controls the high-power contact S1 and S2 devices to be conducted, and the loop is in a normal working state at the moment, and a timing module is started;
step 3: when the loop works, the loop detection module collects pressure drops at two ends of the tested piece in real time. If the acquired voltage is the normal voltage drop of the measured piece, the loop is indicated to work normally; if the acquired voltage is not in the normal voltage drop range of the measured piece, the loop is indicated to work abnormally, a breakpoint occurs, the disconnection time is recorded, and timing data is uploaded in real time;
step 4: after the loop works abnormally, switching to a breakpoint detection mode, and starting breakpoint detection after the system controls the high-power contactors S1 and S2 to be disconnected;
step 5: in the breakpoint detection mode, a bidirectional bipartite algorithm is adopted to search for breakpoints, and the number and the positions of the breakpoints are rapidly determined;
step 6: after the breakpoint detection is completed, the system exits from the breakpoint detection mode, and the detected piece and the breakpoint detection module are ensured to be in an isolated state; then the system controls the relay connected in parallel with the break point to be conducted, isolates the break point from the loop, simultaneously controls the high-power relay to be conducted, and the loop is restored to a normal state to continue testing of other circuit breakers;
step 7: repeating the steps 3-6 when the loop is abnormal again;
step 8: after all the tests are completed, the system reports the test results.
Claims (6)
1. A circuit breaker parallel testing apparatus, the testing apparatus comprising:
a constant current source for supplying a current to the test circuit;
the test circuit includes:
at least two breakpoint detection branches; wherein the breakpoint detection branches are connected in series;
and the loop detection branch is connected in parallel with the breakpoint detection branch and is used for detecting the current on the loop.
2. The circuit breaker parallel test apparatus of claim 1, wherein the breakpoint detection leg comprises a first breakpoint detection leg and a second breakpoint detection leg:
the first breakpoint detection branch includes:
a first circuit breaker;
a first switch connected in parallel with the first circuit breaker;
the first breakpoint detection module is connected with the first circuit breaker in parallel and is used for detecting the first circuit breaker.
3. The circuit breaker parallel test apparatus of claim 2, wherein the second breakpoint detection leg comprises
A second circuit breaker;
a second switch connected in parallel with the second circuit breaker;
and the second breakpoint detection module is connected with the second circuit breaker in parallel and is used for detecting the second circuit breaker.
4. A circuit breaker parallel testing apparatus according to claim 3, wherein the loop detection branch is connected in parallel with the second breakpoint detection branch.
5. The circuit breaker parallel test apparatus of claim 4, wherein,
sending a detection signal to a loop at the first breakpoint detection module, wherein if the detection signal is detected by the second breakpoint detection module, the first circuit breaker and the second circuit breaker are not disconnected;
and if the second breakpoint detection module does not detect the detection signal, the first circuit breaker is not disconnected, and the second circuit breaker is disconnected.
6. The circuit breaker parallel test apparatus of claim 5, wherein the first switch and the second switch each comprise a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223003287.2U CN219871663U (en) | 2022-11-11 | 2022-11-11 | Parallel test equipment for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223003287.2U CN219871663U (en) | 2022-11-11 | 2022-11-11 | Parallel test equipment for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219871663U true CN219871663U (en) | 2023-10-20 |
Family
ID=88334952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223003287.2U Active CN219871663U (en) | 2022-11-11 | 2022-11-11 | Parallel test equipment for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219871663U (en) |
-
2022
- 2022-11-11 CN CN202223003287.2U patent/CN219871663U/en active Active
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