CN101924355A - Electric fireproof current-limiting type protector - Google Patents
Electric fireproof current-limiting type protector Download PDFInfo
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- CN101924355A CN101924355A CN2009100529902A CN200910052990A CN101924355A CN 101924355 A CN101924355 A CN 101924355A CN 2009100529902 A CN2009100529902 A CN 2009100529902A CN 200910052990 A CN200910052990 A CN 200910052990A CN 101924355 A CN101924355 A CN 101924355A
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Abstract
The invention relates to an electric fireproof current-limiting type protector which fast completes short circuit current limitation by using a high-power insulated gate MOSFET (Metal-Oxide -Semiconductor Field Effect Transistor) and has a working principle that partial energy of load currents or fault currents is used as the supplying electricity of an internal control circuit through the transformation of a current transformer so that a product can achieve excellent low-voltage characteristics and microsecond-grade fast short circuit current limitation capability under the conditions of no any auxiliary power supply. Aiming at electric fireproofing, the invention can complete the limitation of short circuit fault currents at a microsecond grade so that short circuit currents are only increased to several times of the normal load currents without generating electric arcs near short circuit points, thereby greatly reducing the occurrence probability of fire hazards and reducing the occurrence probability of short circuit electric fire hazards by 30-50 percent; in addition, the invention plays a good prevention role on the short circuit electric fire hazards, thereby reducing the economic loss caused by the fire hazards.
Description
Technical field
This APEpro is harmless, and digital audio hard decoder chip relates to Audio Processing, legal protection, mobile phone, technical fields such as portable digital player.
Background technology
Electric fireproof current-limiting type protector is studied the genesis mechanism of electrical fire (the particularly fire that causes because of electric short circuit); analyze the shortcoming that present electric fire disaster monitoring equipment exists; the technical application innovation; effect in prevention electric short circuit process; by optimum organization; research and develop out that specific aim is stronger, efficient is higher; the electric fire disaster monitoring equipment that quality is more stable; remedy the short circuit current limitation guard time that conventional electrical fire hazard monitoring equipment exists long, be subjected to impact defectives such as big after the short circuit, improve monitoring electrical fire efficient.
Electric fireproof current-limiting type protector is to use high-power insulated gate field-effect transistor (MOSFET) to finish short circuit current limitation fast.Its operation principle mainly be conversion by current transformer, the power supply of the portion of energy in load current or the fault current, thereby make this product need not to have outstanding low pressure characteristic and the quick short circuit current limitation ability of microsecond level under the situation of any accessory power supply as internal control circuit.
At electric fireproof, can finish current limliting in the microsecond level to short-circuit current, make short circuit current only rise to the several times of normal duty electric current, do not produce electric arc near the short dot simultaneously, greatly reduce the probability of initiation fire, can make the generation probability of short circuit electrical fire reduce by 30%～50%, the short circuit electrical fire is had the good preventing effect, reduce the economic loss that fire causes.
Summary of the invention
1. realize electrical fire microsecond level is carried out current-limiting protection.Before short circuit current forms far away, just finish current limliting, in 150 μ s, make short circuit current drop to 5% of short circuit current protection setting value, thereby reduce the continuous arcing sparking that causes in the electric wiring short circuit process combustible that ignites greatly, cause fire incident;
2. realize protection to electric equipment.To electric wiring in case leak electricity, short trouble, this equipment can in time be discerned and the disengagement failure circuit, the maintenance power consumption equipment;
3. improve the effective utilization of electric wiring.Equipment can pass through the sound and light alarm prompt facility, prevents that the electrical circuit fault accident from enlarging, and improves the effective utilization of electric wiring.
Description of drawings
Fig. 1 is the built-in system structure chart of patent of the present invention.
Embodiment
1. do not cause danger spark and corresponding verification mode of the short-circuit protection of product, short circuit place, the measurements and calculations of short circuit current;
2. product is finished the short circuit current current limliting in the microsecond level short circuit current, makes short circuit current only rise to the several times of normal duty electric current;
3. the reliability of properties of product, and guarantee that new product can satisfy GB14287.1-2005 " electric fire monitoring system part 1: electric fire disaster monitoring equipment " related request.
4. realize electrical fire microsecond level is carried out current-limiting protection.Before short circuit current forms far away, just finish current limliting, in 150 μ s, make short circuit current drop to 5% of short circuit current protection setting value, thereby reduce the continuous arcing sparking that causes in the electric wiring short circuit process combustible that ignites greatly, cause fire incident;
5. realize protection to electric equipment.To electric wiring in case leak electricity, short trouble, this equipment can in time be discerned into disengagement failure circuit, does not produce high temperature and electric spark, keeps power consumption equipment, avoids the fire because of the short circuit generation.
6. improve the effective utilization of electric wiring.Equipment can pass through the sound and light alarm prompt facility, prevents that the electrical circuit fault accident from enlarging, and improves the effective utilization of electric wiring.When the short-circuit current value of protected circuit surpassed short circuit protection and setting electric current alarming value, protector was finished current-limiting protection in 150 μ s;
7. product is finished the short circuit current current limliting in the microsecond level short circuit current, makes short circuit current rise and is no more than 5 times of the normal duty electric current;
. possess the sound and light of alarm of short circuit.
Claims (3)
1. our company's product electric fireproof current-limiting type protector produces and to be to use high-power insulated gate field-effect transistor (MOSFET) to finish short circuit current limitation fast.Its operation principle mainly is the conversion by current transformer, the power supply of the portion of energy in load current or the fault current, thereby need not to have outstanding low pressure characteristic and the quick short circuit current limitation ability of microsecond level under the situation of any accessory power supply as internal control circuit.Can finish current limliting in the microsecond level to short-circuit current, make short circuit current only rise to the several times of normal duty electric current, do not produce electric arc near the short dot simultaneously, greatly reduce the probability of initiation fire, therefore this product is after carrying out the market application, can make the generation probability of short circuit electrical fire reduce by 30%～50%, the short circuit electrical fire is had the good preventing effect, reduce the economic loss that fire causes.
2. electric fireproof current-limiting type protector according to claim 1.Described condition comprises uses high-power insulated gate field-effect transistor (MOSFET) to finish short circuit current limitation fast.Its operation principle mainly is the conversion by current transformer, the power supply of the portion of energy in load current or the fault current, thereby need not to have outstanding low pressure characteristic and the quick short circuit current limitation ability of microsecond level under the situation of any accessory power supply as internal control circuit.
3. electric fireproof current-limiting type protector according to claim 1 is characterized in that.Need not to have outstanding low pressure characteristic and the quick short circuit current limitation ability of microsecond level under the situation of any accessory power supply.Can finish current limliting in the microsecond level, make short circuit current only rise to the several times of normal duty electric current, not produce electric arc near the short dot simultaneously short-circuit current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100529902A CN101924355A (en) | 2009-06-12 | 2009-06-12 | Electric fireproof current-limiting type protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100529902A CN101924355A (en) | 2009-06-12 | 2009-06-12 | Electric fireproof current-limiting type protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101924355A true CN101924355A (en) | 2010-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100529902A Pending CN101924355A (en) | 2009-06-12 | 2009-06-12 | Electric fireproof current-limiting type protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101924355A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532088A (en) * | 2013-10-25 | 2014-01-22 | 田景洵 | Short-circuit resistance self-reset electronic circuit breaker |
| CN106129958A (en) * | 2016-08-15 | 2016-11-16 | 北海市深蓝科技发展有限责任公司 | A kind of Over Current Protection System |
| CN109687417A (en) * | 2019-01-28 | 2019-04-26 | 国电南瑞科技股份有限公司 | A kind of fault current limiter configuration method |
| CN110474428A (en) * | 2019-08-26 | 2019-11-19 | 上海同昭智能科技有限公司 | Wisdom security protection electric cabinet |
| CN112186721A (en) * | 2020-09-30 | 2021-01-05 | 江苏卫川物联科技有限公司 | Electric fire-proof current-limiting protector |
-
2009
- 2009-06-12 CN CN2009100529902A patent/CN101924355A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532088A (en) * | 2013-10-25 | 2014-01-22 | 田景洵 | Short-circuit resistance self-reset electronic circuit breaker |
| CN106129958A (en) * | 2016-08-15 | 2016-11-16 | 北海市深蓝科技发展有限责任公司 | A kind of Over Current Protection System |
| CN109687417A (en) * | 2019-01-28 | 2019-04-26 | 国电南瑞科技股份有限公司 | A kind of fault current limiter configuration method |
| CN109687417B (en) * | 2019-01-28 | 2020-04-03 | 国电南瑞科技股份有限公司 | Fault current limiter configuration method |
| CN110474428A (en) * | 2019-08-26 | 2019-11-19 | 上海同昭智能科技有限公司 | Wisdom security protection electric cabinet |
| CN112186721A (en) * | 2020-09-30 | 2021-01-05 | 江苏卫川物联科技有限公司 | Electric fire-proof current-limiting protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Lin Lin Document name: Notification of Publication of the Application for Invention |
|
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Chengjia Electronic Technology Co., Ltd. Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Chengjia Electronic Technology Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101222 |