CN202586258U - Safety protection device used in low-voltage electric appliance durability test - Google Patents
Safety protection device used in low-voltage electric appliance durability test Download PDFInfo
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- CN202586258U CN202586258U CN 201220191466 CN201220191466U CN202586258U CN 202586258 U CN202586258 U CN 202586258U CN 201220191466 CN201220191466 CN 201220191466 CN 201220191466 U CN201220191466 U CN 201220191466U CN 202586258 U CN202586258 U CN 202586258U
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Abstract
The utility model discloses a safety protection device used in low-voltage electric appliance durability tests. The safety protection device mainly comprises a tested sample state detection portion and a control portion. The tested sample state detection portion is used for monitoring the impedance voltage or the impedance current on a load circuit. The control portion is mainly composed of a touch screen, a PLC master controller, a main circuit breaker QF and a load. The main circuit breaker QF, the load and the tested sample are serially connected together to form the load circuit. A detection circuit is connected to the load circuit, wherein the detection circuit is connected with a control circuit which is mainly composed of the touch screen and the PLC master controller. The control circuit is connected with the main circuit breaker and the tested sample. The detection circuit and the control circuit are integrated into an integral body for performing real-time monitoring on the state of the tested sample. The PLC master controller is provided with a man-machine control interface comprising a touch screen. According to the utility model, parameters, such as the number of operations, the operation frequency, the power-on time and the like, required by standards are set through the man-machine interface and the PLC, so advantages of convenience, flexibility and equipment security are realized in the process of the utilization of the whole set of equipment.
Description
Technical field
The utility model relates to a kind of low-pressure electronic equipment product when durability detects; To test product generation contact melting welding or normally under the malfunction such as separating brake; Detect rapidly and issue operational order to system and cut off the device that experiment power supply is also reported to the police rapidly, belong to low-voltage electrical apparatus detection technique field.
Technical background
At present, domestic low-pressure electronic equipment product is constantly development, and durability (electric life) has been to weigh an important indicator of properties of product, constantly obtains the attention of low-voltage electrical apparatus manufacturer.Durability (electric life) test (hereinafter to be referred as electrical endurance test) be analog electronics under normal environment for use, by standard product is made an experiment.Because the rated voltage of low-voltage electrical apparatus is very high now, 400V even 690V, 1140V's.Rated current has also arrived the big electric current of 6.3kA.Can not design by long-term energising so be used for the fictitious load (impedance) of electrical endurance test, generally all can select certain current on time to design, so; In case test product breaks down; Can not in time cut off under the situation of experiment power supply again, will soon burn impedance, cause the accident.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that prior art exists; The test product state is detected in process of the test and provide a kind of; Combine control loop simultaneously; When detecting the fault generation, cut off experiment power supply rapidly, reach the safety guard of the low-voltage electrical apparatus endurance test of protection impedance purpose.
The purpose of the utility model is accomplished through following technical scheme, and it mainly comprises test product state-detection and control section, and described test product state-detection comprises monitors impedance voltage on the load circuit or electric current; Described control section mainly is made up of touch-screen, PLC main controller, main circuit breaker QF, load; Described main circuit breaker QF, load are connected with test product and are constituted a load circuit; Be connected in this load circuit and detect the loop; Described detection loop links to each other with the control loop that mainly is made up of touch-screen, PLC main controller, and said control loop connects described main circuit breaker and test product.
Described detection loop and control loop integrate and the test product state are monitored in real time, and described PLC main controller has the man-machine operation and control interface that comprises touch-screen.
The utility model is analyzed monitoring result through PLC, judges the test product state, if find that test product breaks down, and rapidly through control loop, the disjunction main circuit breaker, the cut-off loop electric current reaches the purpose of protection equipment.
The utility model belongs to a kind of improvement to prior art; It is that test product state-detection and control section are integrated; By the test product state-detection test is monitored in real time, set up standard the number of operations that requires, frequency of operation, conduction time etc. through man-machine boundary and PLC.The two is integrated, and makes complete equipment convenient in use flexibly, has improved device security.
Description of drawings
Fig. 1 is the said endurance test functional-block diagram of the utility model;
Fig. 2 is the said endurance test major loop of a utility model schematic diagram.
Embodiment
To combine below accompanying drawing to the utility model make detailed introduction: Fig. 1, shown in 2, the utility model mainly comprises test product state-detection and control section, described test product state-detection comprises monitors impedance voltage on the load circuit or electric current; Described control section mainly is made up of touch-screen, PLC main controller, main circuit breaker QF, load; Described main circuit breaker QF, load 1 are connected with test product 2 and are constituted a load circuit; Be connected in this load circuit and detect loop 3; Described detection loop 3 links to each other with the control loop 4 that mainly is made up of touch-screen, PLC main controller, and said control loop 4 connects described main circuit breaker QF and test product 2.
Described detection loop 3 integrates and test product 2 states is monitored in real time with control loop 4, and described PLC main controller has the man-machine operation and control interface that comprises touch-screen.
The utility model is analyzed monitoring result through PLC, judges the test product state, if find that test product breaks down, and rapidly through control loop, the disjunction main circuit breaker, the cut-off loop electric current reaches the purpose of protection equipment.
The test product state-detection mainly is the voltage in the monitoring impedance, and with the electric current that flows through in the impedance, and described control section is made up of touch-screen, PLC, main circuit breaker QF, load etc.
Under normal test situation, equipment is set conduction time, frequency of operation and number of operations according to standard-required.Equipment will be connected the disjunction test product on request, can cut off the electricity supply when arriving the number of times of setting, and test product is shut-down operation also.Because the duration of test test product is charged always, if test product melting welding or normal separating brake in the process of the test, voltage will be added in the impedance always, and the words of untimely disjunction will be burnt impedance, cause the accident.Added test product state-detection (voltage or electric current in the monitoring impedance) now; If find to have surpassed the conduction time (time that voltage or electric current are arranged in the impedance) of actual monitoring the guard time of setting; PLC will send instruction, breaks off the requirement that main circuit breaker plays the protection impedance.
Claims (2)
1. the safety guard of a low-voltage electrical apparatus endurance test, it mainly comprises test product state-detection and control section, it is characterized in that described test product state-detection comprises impedance voltage on the load circuit or electric current are monitored; Described control section mainly is made up of touch-screen, PLC main controller, main circuit breaker QF, load; Described main circuit breaker QF, load are connected with test product and are constituted a load circuit; Be connected in this load circuit and detect the loop; Described detection loop links to each other with the control loop that mainly is made up of touch-screen, PLC main controller, and said control loop connects described main circuit breaker and test product.
2. the safety guard of low-voltage electrical apparatus endurance test according to claim 1; It is characterized in that described detection loop and control loop integrate and the test product state is monitored in real time, described PLC main controller has the man-machine operation and control interface that comprises touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220191466 CN202586258U (en) | 2012-05-02 | 2012-05-02 | Safety protection device used in low-voltage electric appliance durability test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220191466 CN202586258U (en) | 2012-05-02 | 2012-05-02 | Safety protection device used in low-voltage electric appliance durability test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202586258U true CN202586258U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220191466 Expired - Fee Related CN202586258U (en) | 2012-05-02 | 2012-05-02 | Safety protection device used in low-voltage electric appliance durability test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202586258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483458A (en) * | 2016-11-23 | 2017-03-08 | 国家电网公司 | Digital low-voltage direct switch on and off ability test device and the method for inspection |
-
2012
- 2012-05-02 CN CN 201220191466 patent/CN202586258U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483458A (en) * | 2016-11-23 | 2017-03-08 | 国家电网公司 | Digital low-voltage direct switch on and off ability test device and the method for inspection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20160502 |