CN203310972U - Temperature rise characteristic testing table used for mini-type circuit breaker - Google Patents
Temperature rise characteristic testing table used for mini-type circuit breaker Download PDFInfo
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- CN203310972U CN203310972U CN2013203913807U CN201320391380U CN203310972U CN 203310972 U CN203310972 U CN 203310972U CN 2013203913807 U CN2013203913807 U CN 2013203913807U CN 201320391380 U CN201320391380 U CN 201320391380U CN 203310972 U CN203310972 U CN 203310972U
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- circuit breaker
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- phase road
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Abstract
The utility model provides a temperature rise characteristic testing table used for a mini-type circuit breaker. The temperature rise characteristic testing table used for the mini-type circuit breaker includes a three-phase control power source and a three-phase terminal box. The temperature rise characteristic testing table used for the mini-type circuit breaker is characterized in that the three-phase control power source is connected with the three-phase terminal box; the three-phase control power source provides voltage and current output while the three-phase terminal box is used for installing the to-be-tested product; and the three-phase terminal box is provided with a current-continuing device. The power source is controlled by a PLC. An aim of stabilizing current is realized through measuring time parameters of an employed electronic voltage regulator in advance, calculating and adjusting conduction time of a corresponding motor automatically in practical operation. Output voltage is set based on testing current and automatic judgment and automatic gear shift are realized. By adopting a scanning method, multi-station automatic current continuation is realized. By employing the AC30V power source and a current limiting resistor and adopting the PLC for control, a requirement that open circuit voltage is higher than 30V when the circuit breaker is switched off is met so that surge current on a contact when the circuit breaker is switch on is guaranteed and a test can meet standard detection requirement completely.
Description
Technical field
The utility model relates to a kind of long delay attribute testing or temperature rise test test board for products such as miniature circuit breaker such as MCB, RCCB, RCBO.
Background technology
Isolating switch is the most common electric equipment in low-voltage distribution field, in the various parameters of isolating switch, the temperature rise of connection terminal is an important indicator, temperaturing lifting abnormality not only can cause the mechanical connection hidden danger of equipment, low voltage power distribution network is had an accident, simultaneously also can form electric disaster hidden-trouble, while is along with the miniaturization of isolating switch profile, the heating of its unit sizes increases greatly, therefore the connecting terminal members temperature rise becomes the very important problem that affects the isolating switch functional reliability, appearance for fear of the problems referred to above, need to test the temperature characteristic of small-sized short-circuiting device.
The utility model content
In order to solve the above problem existed in background technology, the utility model provides a kind of testing temperature rising characteristic platform of miniature circuit breaker,
Can be for achieving the above object, the utility model adopts following technical scheme:
A kind of testing temperature rising characteristic platform of miniature circuit breaker, comprise three-phase road control power supply and three-phase road terminal box, it is characterized in that, the three-phase road is controlled power supply and is connected with three-phase road terminal box, the three-phase road is controlled power supply voltage and current output is provided, three-phase road terminal box, for test product is installed, is provided with current following device on the terminal box of described three-phase road.
Described three-phase road is controlled power supply and with three-phase road terminal box, is connected with signal wire by cable.
Power acquisition modular PLC is controlled on described three-phase road, adopts the AD conversion of isolation sensor input PLC, uses the stable and lifting of PLC program-control test electric current fully.
On the terminal box of described three-phase road, 30V open-circuit voltage device is installed.
Described three-phase road is controlled on power supply and is provided with display screen, be used to showing electrical quantity and operation steps.
The beneficial effects of the utility model are:
1, flow stabilizing function adopts PLC to control fully, by measuring in advance the time parameter of the electric voltage regulator adopted, in actual motion, automatically calculates the reply electrical power time, and is adjusted, to reach the purpose of current stabilization.
2, output voltage is according to the test current setting, automatic decision, self shifter.
3, scan mode realizes the automatic afterflow function of multistation.
4, adopt the AC30V power supply, by current-limiting resistance, use PLC to control, realization open-circuit voltage when the test product disjunction is greater than the requirement of 30V, and the dash current while having guaranteed the test product closure on contact, make test meet the examination criteria requirement fully.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated
Fig. 1 is the one-piece construction schematic diagram of the utility model embodiment 1;
Fig. 2 is that power principle figure is controlled on the three-phase road in the utility model embodiment 1;
Fig. 3 is the current following device control principle drawing in the utility model embodiment 1.
Embodiment
Below in conjunction with accompanying drawing explanation and embodiment, the utility model is further described:
Embodiment 1
As shown in Figure 1, a kind of testing temperature rising characteristic platform of miniature circuit breaker, comprise three-phase road control power supply and three-phase road terminal box, the three-phase road is controlled power supply and with signal wire, is connected by cable with three-phase road terminal box, the three-phase road is controlled power supply voltage and current output is provided, on it, has display screen, and provide various and control, electric parameter measurement and demonstration, three-phase road terminal box is for installing test product, provide on the terminal box of described three-phase road and be provided with current following device, when current following device is used for realizing a certain test product tripping operation, breakpoint at short notice continues rapidly, continued the test function of remaining product.Power supply is controlled on three-phase road terminal box and three-phase road certain distance, can provide different experimental enviroment such as temperature, humidity etc. for test product.
Power acquisition modular PLC is controlled on described three-phase road, adopts the AD conversion of isolation sensor input PLC, uses the stable and lifting of PLC program-control test electric current fully.
On the terminal box of described three-phase road, 30V open-circuit voltage device is installed, for when the test product disjunction, guarantees that port provides the voltage that is more than or equal to 30v.
The output voltage that power supply is controlled on the three-phase road is: AC0-8V, and gear automatically switches; 2. output current: AC1-200A; The station number: single-phase every phase 3 stations, three-phase is totally 3 stations; Precision of steady current: ± 1.5%; Other function: the automatic afterflow of each station; The 30V open-circuit voltage is provided.
Flow stabilizing function adopts PLC to control fully, by measuring in advance the time parameter of the electric voltage regulator adopted, in actual motion, automatically calculates the reply electrical power time, and is adjusted, to reach the purpose of current stabilization.
As shown in Figure 3, current following device adopts auxiliary+24V direct supply, by scan input end mouth numerical value, enter in PLC and judge, judge the disconnection station, and before energising, adopt action to control and reduce pressure regulator output, effectively avoided the immediate current overshoot caused due to impedance variation after afterflow.
It will be recognized by those skilled in the art, under the prerequisite that does not depart from protection scope of the present invention, can carry out various modifications, variation and combination to above-mentioned embodiment, and think that this modification, variation and combination are within the scope of originality thought.
Claims (3)
1. the testing temperature rising characteristic platform of a miniature circuit breaker, comprise three-phase road control power supply and three-phase road terminal box, it is characterized in that, the three-phase road is controlled power supply and is connected with three-phase road terminal box, the three-phase road is controlled power supply voltage and current output is provided, and three-phase road terminal box, for test product is installed, is provided with current following device on the terminal box of described three-phase road, described three-phase road is controlled power supply and with three-phase road terminal box, is connected with signal wire by cable, and power acquisition modular PLC is controlled on described three-phase road.
2. the testing temperature rising characteristic platform of a kind of miniature circuit breaker as claimed in claim 1, is characterized in that, on the terminal box of described three-phase road, 30V open-circuit voltage device is installed.
3. the testing temperature rising characteristic platform of a kind of miniature circuit breaker as claimed in claim 1, is characterized in that, described three-phase road is controlled on power supply and is provided with display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203913807U CN203310972U (en) | 2013-06-26 | 2013-06-26 | Temperature rise characteristic testing table used for mini-type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203913807U CN203310972U (en) | 2013-06-26 | 2013-06-26 | Temperature rise characteristic testing table used for mini-type circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203310972U true CN203310972U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203913807U Expired - Fee Related CN203310972U (en) | 2013-06-26 | 2013-06-26 | Temperature rise characteristic testing table used for mini-type circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203310972U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391243A (en) * | 2014-11-18 | 2015-03-04 | 国家电网公司 | Automatic testing device for three-phase aftercurrent action protector |
| CN105548879A (en) * | 2015-12-01 | 2016-05-04 | 珠海格力电器股份有限公司 | Automatic test method and circuit for motor temperature rise and motor |
| CN112444739A (en) * | 2019-08-29 | 2021-03-05 | 中车长春轨道客车股份有限公司 | Testing device |
-
2013
- 2013-06-26 CN CN2013203913807U patent/CN203310972U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391243A (en) * | 2014-11-18 | 2015-03-04 | 国家电网公司 | Automatic testing device for three-phase aftercurrent action protector |
| CN105548879A (en) * | 2015-12-01 | 2016-05-04 | 珠海格力电器股份有限公司 | Automatic test method and circuit for motor temperature rise and motor |
| CN112444739A (en) * | 2019-08-29 | 2021-03-05 | 中车长春轨道客车股份有限公司 | Testing device |
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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 |
Granted publication date: 20131127 Termination date: 20140626 |
|
| EXPY | Termination of patent right or utility model |