CN202939279U - Test device of direct current circuit breaker - Google Patents
Test device of direct current circuit breaker Download PDFInfo
- Publication number
- CN202939279U CN202939279U CN 201220493844 CN201220493844U CN202939279U CN 202939279 U CN202939279 U CN 202939279U CN 201220493844 CN201220493844 CN 201220493844 CN 201220493844 U CN201220493844 U CN 201220493844U CN 202939279 U CN202939279 U CN 202939279U
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- frequency inverter
- cabinet
- dsp controller
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Abstract
The utility model discloses a test device of a direct current circuit breaker. An input rectifier filter circuit, a high-frequency inverter circuit, a high-frequency transformer, an output rectifier circuit, a load impeder, an A/D current sampling circuit, a near touch screen interface and remote host computer interface, a DSP controller, an alarm device and a fault detection circuit are installed in a cabinet. The A/D current sampling circuit, the near touch screen interface and remote host computer interface, the fault detection circuit and the alarm device are connected with the DSP controller. An output of the DSP controller is also connected with the high-frequency inverter circuit. An output of the input rectifier filter circuit is connected with the high-frequency inverter circuit. An output of the high-frequency inverter circuit is connected with the high-frequency transformer, the output rectifier circuit and the load impeder in order. An output of the load impeder is connected with a sample circuit breaker outside the cabinet. The test device of the utility model has the advantages of high precision, low power consumption, simple operation, and complete control and test functions, and the safety and reliability of a test process can be ensured.
Description
Technical field
The utility model relates to a kind of electrical test equipment, is specifically related to a kind of test unit of dc circuit breaker.
Background technology
expansion along with family expenses and similar site circuit-breakers for over-current protection range of application used, the isolating switch that uses in DC circuit is also increasing, in order to adapt to the development of dc circuit breaker, National Quality Supervision Bureau General and national standardization management committee revise relevant criterion especially: GB 10963.2-2008 electrical equipment appendix " family expenses and similar site circuit-breakers for over-current protection second portion used: the isolating switch that is used for AC and DC ", this standard code the testing requirements of isolating switch, isolating switch is carried out test in 28 days, each cycle will pass to rated current and 3 hours obstructed electric currents under the open-circuit voltage of 30V at least at 21 hours, after in the end finishing during current flowing, in 5 seconds with current stabilization rise to the test current of 1.45 times, record is threaded off actuation time.At present, this test unit also do not occur, for this reason, need to provide a kind of test unit of dc circuit breaker.
Summary of the invention
The purpose of this utility model is to provide that a kind of volume is little, precision is high, loss is little, simple to operate, have complete control and measuring ability, guarantee that simultaneously testing process is safe and reliable, testing result is the test unit of isolating switch accurately.
The technical solution adopted in the utility model is: the utility model comprises a cabinet, is mounted with input filter rectification circuit, high-frequency inverter circuit, high-frequency transformer, output rectification circuit, loaded impedance device, A/D current sampling circuit, the long-range host computer of short range touch screen interface interface, dsp controller, warning device and failure detector circuit in cabinet; Described A/D current sampling circuit, short range touch screen interface and be connected host computer interface, failure detector circuit, warning device and be connected with dsp controller, the output of dsp controller also connects high-frequency inverter circuit; The output of described input filter rectification circuit connects high-frequency inverter circuit, and the output of high-frequency inverter circuit connects high-frequency transformer, output rectification circuit and loaded impedance device successively, and the output of loaded impedance device connects the test product isolating switch that is positioned at the cabinet outside.
The beneficial effects of the utility model are: whole thermal value of the present utility model is low, precision is high, power consumption is little, simple to operate, have complete control and a test function, can warranty test process safe and reliable, also can guarantee the high and good reproducibility of the accuracy of test findings.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
In figure: 1. input filter rectification circuit; 2. high-frequency inverter circuit; 3. high-frequency transformer; 4. output rectification circuit; 5. loaded impedance device; 6.A/D current sampling circuit; 7. the long-range host computer of short range touch screen interface interface; 8.DSP controller; 9. warning device; 10. failure detector circuit; 11. cabinet.
Embodiment
As shown in Figure 1, outside of the present utility model is a cabinet 11, is mounted with input filter rectification circuit 1, high-frequency inverter circuit 2, high-frequency transformer 3, output rectification circuit 4, loaded impedance device 5, A/D current sampling circuit 6, the long-range host computer of short range touch screen interface interface 7, dsp controller 8, warning device 9, failure detector circuit 10 in cabinet 11.Wherein, A/D current sampling circuit 6, short range touch screen interface and be connected host computer interface 7, failure detector circuit 10, warning device 9 and be connected with dsp controller 8, the output of dsp controller 8 also connects high-frequency inverter circuit 2.The long-range host computer of short range touch screen interface interface 7 inputs to dsp controller 8 with parameter.The output of input filter rectification circuit 1 connects high-frequency inverter circuit 2, and the output of high-frequency inverter circuit 2 connects high-frequency transformer 3, output rectification circuit 4 and loaded impedance device 5 successively.The output of loaded impedance device 5 connects the test product isolating switch that is positioned at cabinet 11 outsides.Loaded impedance device 5 is adjustable resistance.Consider that this test is used for low-voltage, high-current equipment, select the schottky diode that hangs down the on-state pressure drop to make the output commutator tube and raise the efficiency.
In cabinet 11, radiator fan is installed, higher than 40 ℃, radiator fan moves automatically when the interior temperature of cabinet 11, and lower than 40 ℃, radiator fan stops automatically when the interior temperature of cabinet 11.
The utility model is when work, the three-phase alternating current input power is by 1 input of input filter rectification circuit, obtain middle dc voltage through the uncontrollable rectifier system of three-phase bridge, middle dc voltage is again through high-frequency inverter circuit 2 conversion, then through high-frequency transformer 3 voltages of transformation, last regulating resistance changes output current isolating switch is carried out test in continuous 28 days.After on-test, make the test product isolating switch be in closure state, each cycle passed to rated current under the open-circuit voltage of 30V at least by 21 hours and 3 hours obstructed electric currents form.If product is threaded off in process of the test, dsp controller 8 can record drop-away time, and starts warning device 9, turn-offs hookup.After in the end finishing during current flowing, with the test current of 1.45 times of rising to of current stabilization, record is threaded off actuation time in 5 seconds.After off-test, dsp controller 8 Control experiment circuit automatically shut down.
The dsp controller that the utility model adopts, antijamming capability is strong, is subjected to the external factor such as temperature, environment to affect little, program-controlled, it is convenient to revise, good stability, and have powerful data-handling capacity and high travelling speed can Real Time Monitoring current sampling data and conduction time, can carry out communication with DSP by the RS485 serial ports, all operations all are based on graphical interfaces, arrange succinct, easy to operate.
Claims (3)
1. the test unit of a dc circuit breaker, comprise a cabinet (11), it is characterized in that: be mounted with input filter rectification circuit (1), high-frequency inverter circuit (2), high-frequency transformer (3), output rectification circuit (4), loaded impedance device (5), A/D current sampling circuit (6), the long-range host computer of short range touch screen interface interface (7), dsp controller (8), warning device (9) and failure detector circuit (10) in cabinet (11); Described A/D current sampling circuit (6), the long-range host computer of short range touch screen interface interface (7), failure detector circuit (10), warning device (9) are connected with dsp controller (8), and the output of dsp controller (8) also connects high-frequency inverter circuit (2); The output of described input filter rectification circuit (1) connects high-frequency inverter circuit (2), the output of high-frequency inverter circuit (2) connects high-frequency transformer (3), output rectification circuit (4) and loaded impedance device (5) successively, and the output of loaded impedance device (5) connects the test product isolating switch that is positioned at cabinet (11) outside.
2. the test unit of a kind of dc circuit breaker according to claim 1, it is characterized in that: cabinet is provided with radiator fan in (11).
3. the test unit of a kind of dc circuit breaker according to claim 1, it is characterized in that: described loaded impedance device (5) is adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493844 CN202939279U (en) | 2012-09-26 | 2012-09-26 | Test device of direct current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493844 CN202939279U (en) | 2012-09-26 | 2012-09-26 | Test device of direct current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939279U true CN202939279U (en) | 2013-05-15 |
Family
ID=48323510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220493844 Expired - Fee Related CN202939279U (en) | 2012-09-26 | 2012-09-26 | Test device of direct current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939279U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236916A (en) * | 2014-09-22 | 2014-12-24 | 长沙研创电气有限公司 | Load test system of generator for engine |
| CN106771998A (en) * | 2016-11-22 | 2017-05-31 | 国网山东省电力公司东营供电公司 | A kind of tester for testing RCCB |
| CN107271897A (en) * | 2017-08-02 | 2017-10-20 | 苏州上电科电气设备有限公司 | A kind of miniature circuit breaker failtests equipment |
| CN112526382A (en) * | 2020-11-18 | 2021-03-19 | 上海置信电气非晶有限公司 | Testing device for rectifying module of pole-mounted circuit breaker |
-
2012
- 2012-09-26 CN CN 201220493844 patent/CN202939279U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236916A (en) * | 2014-09-22 | 2014-12-24 | 长沙研创电气有限公司 | Load test system of generator for engine |
| CN104236916B (en) * | 2014-09-22 | 2017-01-18 | 长沙研创电气有限公司 | Load test system of generator for engine |
| CN106771998A (en) * | 2016-11-22 | 2017-05-31 | 国网山东省电力公司东营供电公司 | A kind of tester for testing RCCB |
| CN107271897A (en) * | 2017-08-02 | 2017-10-20 | 苏州上电科电气设备有限公司 | A kind of miniature circuit breaker failtests equipment |
| CN112526382A (en) * | 2020-11-18 | 2021-03-19 | 上海置信电气非晶有限公司 | Testing device for rectifying module of pole-mounted circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20130926 |