CN201393049Y - Passive overcurrent protection device - Google Patents
Passive overcurrent protection device Download PDFInfo
- Publication number
- CN201393049Y CN201393049Y CN200920143592U CN200920143592U CN201393049Y CN 201393049 Y CN201393049 Y CN 201393049Y CN 200920143592 U CN200920143592 U CN 200920143592U CN 200920143592 U CN200920143592 U CN 200920143592U CN 201393049 Y CN201393049 Y CN 201393049Y
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- lead
- diode
- draw
- anode
- voltage stabilizing
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Abstract
The utility model relates to a passive overcurrent protection device comprises a Rogowski coil, a diode, a fiber transceiver, a diode, a voltage stabilizing diode, two resistors, and a capacitor. With the advantages of simple structure and low cost, the utility model has no need of adding high-voltage isolation equipment, develops the first-ever overcurrent protection device based on passive optical signal transmission in a national level, improves the security and reliability of systems to be protected, and allows for convenient installation in actual engineering cases.
Description
Technical field
The utility model relates to the overcurrent protection field, especially a kind of passive overcurrent protective device.
Background technology
The present overcurrent protective device that uses, most of active mode that adopts, by external power source, and the transmission of most of employing analog quantity, adopt the overcurrent protective device of passive optical signal transmission still blank at home.Because this overcurrent protective device works in national big science engineering EAST neutral beam heating power supply---100kV high-voltage pulse power source; this power supply operate as normal maximum output voltage is 100kV, if adopt active overcurrent protective device, then will increase the high pressure xegregating unit; increased cost, complex structure.
The utility model content
The purpose of this utility model provides a kind of passive overcurrent protective device, owing to need to increase the high pressure xegregating unit, and the cost that causes is higher, the problem of complicated integral structure when solve adopting active overcurrent protective device.
In order to achieve the above object, the technical scheme that the utility model adopted is:
Passive overcurrent protective device; it is characterized in that: but include sieve coil; diode and model are the fiber optical transceiver of HFBR1414; but there is lead to draw on described sieve coil and is connected to described diode anode; there are two leads to draw on the described diode cathode; draw lead for one and be connected to a voltage stabilizing didoe negative electrode; be connected with lead on the described voltage stabilizing didoe anode; lead ground connection on the described voltage stabilizing didoe anode; after another root on the described diode cathode is drawn and is in series with two resistance on the lead; be connected to the anode of the light-emitting diode in the described fiber optical transceiver again; light-emitting diodes tube cathode in the described fiber optical transceiver is by lead ground connection; also have lead to draw on the lead between two resistance of connecting on the described diode cathode; describedly draw the terminals that lead is connected to an electric capacity, another terminals of described electric capacity are connected with described voltage stabilizing didoe anode by lead.
But the di/dt that sieve coil is measured, and link to each other with diode D1, pass through resistance then electric capacity is charged, the voltage stabilizing didoe negative electrode links to each other with diode cathode, but the input signal that guarantees sieve coil is less than 3.3V, and last electric capacity links to each other the output overcurrent signal with optical transmitter HFBR1414 by resistance.
The utility model is simple in structure; cost is lower, need not increase the high pressure xegregating unit again, has filled up present domestic this blank of overcurrent protective device that does not adopt passive optical signal transmission; increased the fail safe and the reliability of protected system, it is also comparatively convenient to install in the actual engineering.
Description of drawings
Fig. 1 is the utility model circuit diagram.
Fig. 2 is the utility model simulative debugging oscillogram.
Embodiment
As shown in Figure 1.Passive overcurrent protective device; but include sieve coil; diode and model are the fiber optical transceiver of HFBR1414; but there is lead to draw on described sieve coil and is connected to described diode anode; there are two leads to draw on the described diode cathode; draw lead for one and be connected to a voltage stabilizing didoe negative electrode; be connected with lead on the described voltage stabilizing didoe anode; lead ground connection on the described voltage stabilizing didoe anode; after another root on the described diode cathode is drawn and is in series with two resistance on the lead; be connected to the anode of the light-emitting diode in the described fiber optical transceiver again; light-emitting diodes tube cathode in the described fiber optical transceiver is by lead ground connection; also have lead to draw on the lead between two resistance of connecting on the described diode cathode; describedly draw the terminals that lead is connected to an electric capacity, another terminals of described electric capacity are connected with described voltage stabilizing didoe anode by lead.
But sieve coil adopts from integral way, 1V=50A.When over-current signal, capacitor C 1 is charged rapidly by diode D1, and when C1 both end voltage during greater than 0.7V, electric capacity is by R1 and HFBR1414 discharge, and at this moment, optical transmitter HFBR1414 sends light signal, blocks all power modules outputs.Dz is the 3.3V voltage stabilizing didoe among Fig. 1, but prevents that sieve coil input voltage is too high, and it is too big to cause flowing through the HFBR1414 electric current, damages optical transmitter
Claims (1)
1; passive overcurrent protective device; it is characterized in that: but include sieve coil; diode and model are the fiber optical transceiver of HFBR1414; but there is lead to draw on described sieve coil and is connected to described diode anode; there are two leads to draw on the described diode cathode; draw lead for one and be connected to a voltage stabilizing didoe negative electrode; be connected with lead on the described voltage stabilizing didoe anode; lead ground connection on the described voltage stabilizing didoe anode; after another root on the described diode cathode is drawn and is in series with two resistance on the lead; be connected to the anode of the light-emitting diode in the described fiber optical transceiver again; light-emitting diodes tube cathode in the described fiber optical transceiver is by lead ground connection; also have lead to draw on the lead between two resistance of connecting on the described diode cathode; describedly draw the terminals that lead is connected to an electric capacity, another terminals of described electric capacity are connected with described voltage stabilizing didoe anode by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920143592U CN201393049Y (en) | 2009-03-30 | 2009-03-30 | Passive overcurrent protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920143592U CN201393049Y (en) | 2009-03-30 | 2009-03-30 | Passive overcurrent protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201393049Y true CN201393049Y (en) | 2010-01-27 |
Family
ID=41599870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920143592U Expired - Fee Related CN201393049Y (en) | 2009-03-30 | 2009-03-30 | Passive overcurrent protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201393049Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687396A (en) * | 2018-12-21 | 2019-04-26 | 南京科远驱动技术有限公司 | A kind of IGBT short-circuit protection circuit and its implementation |
| WO2022261565A3 (en) * | 2021-06-11 | 2023-01-19 | Helion Energy, Inc. | High-speed switching apparatus for electromagnetic coils |
-
2009
- 2009-03-30 CN CN200920143592U patent/CN201393049Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687396A (en) * | 2018-12-21 | 2019-04-26 | 南京科远驱动技术有限公司 | A kind of IGBT short-circuit protection circuit and its implementation |
| CN109687396B (en) * | 2018-12-21 | 2019-11-22 | 南京科远驱动技术有限公司 | A kind of IGBT short-circuit protection circuit and its implementation |
| WO2022261565A3 (en) * | 2021-06-11 | 2023-01-19 | Helion Energy, Inc. | High-speed switching apparatus for electromagnetic coils |
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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: 20100127 Termination date: 20110330 |