CN202150689U - Active type power supply surge backup protection breaker - Google Patents
Active type power supply surge backup protection breaker Download PDFInfo
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- CN202150689U CN202150689U CN201120193995U CN201120193995U CN202150689U CN 202150689 U CN202150689 U CN 202150689U CN 201120193995 U CN201120193995 U CN 201120193995U CN 201120193995 U CN201120193995 U CN 201120193995U CN 202150689 U CN202150689 U CN 202150689U
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- 238000005070 sampling Methods 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 16
- 230000001012 protector Effects 0.000 abstract description 31
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an active type power supply surge backup protection breaker, including a sampling inductor ab, a voltage-dividing circuit, a current comparator IC1 and a time comparator IC2. The sampling inductor ab is connected with a resistor R1 in parallel; the resistor R1 is connected with a switch K2 in parallel; the sampling inductor ab is connected with the positive terminal of the current comparator IC1 through a line; and the output terminal of the current comparator IC1 is connected with the positive terminal of the time comparator IC2. In the utility model, the beneficial effects are as following: the mode is changed that the inner and outer protective devices of the power supply surge protector are started passively until the temperature of the power supply surge protector element is increased, the backup circuit break protector is actively started in the mode that the continuous current size and continuous time of the current flowing through the power supply surge protector are actively measured, and the purpose is realized that the power supply surge protector can isolate the power supply line.
Description
Technical field
The utility model relates to a kind of active power surge backup protection circuit breaker.
Background technology
Present power source surge protector both domestic and external all requires back-up breaker (being also referred to as the reserve discharge cock) must be installed.The power source surge protector trip gear is divided into the inner fuse protection K switch 1 of the power source surge protector backup protection circuit breaker K2 outside with power source surge protector and (is commonly called as: the reserve discharge cock) form; Its principle is; When the power source surge protector operate as normal; The electric current of power source surge protector of flowing through is the uA level, K1, and K2 is kept closed; But when the power supply power source surge protector during aging or impact failure; The electrorheological of power source surge protector of flowing through is big; Because the heat generation characteristic of power source surge protector element ZOV causes inner element ZOV of power source surge protector and the tie point A between the K1 to heat up and generates heat, tie point A fusing; K1 in the inner strength of power source surge protector (such as the pulling force of spring; The metal elastic force of connector) effect separates with power source surge protector element ZOV down, and the completion power source surge protector separates with electrical network.Under extreme case; When power supply power source surge protector when instantaneous short circuit is irrecoverable during because of lightning impulse, if striking point A fails fusing, when perhaps K1 and ZOV striking point A fail in time to move because of other reason when aging; By the related specifications requirement; Outside reserve breaker protector K2 must move, and could guarantee separating of power source surge protector and electrical network like this, guarantees not take place line accident.
Consider power supply power source surge protector functional characteristic, the selection of K2 must be can tolerate instantaneous large-current (tens to KA up to a hundred) to impact the switchgear that can under the continuous current effect, break off again simultaneously.In existing back-up breaker, the equipment that K2 adopts on the engineering has three kinds, i.e. fracture of wire, 3-leakage switch are dissolved in 1-air switch, 2-insurance.The above two must through continue to open greater than sky or the effect of the electric current of fuse rated current under just action; The latter's driving is the integrating circuit of time and electric current; Under KA level lightning current impacts; Lightning impulse all can produce action each time, needs hand-reset, therefore on engineering, seldom uses.
The utility model content
The purpose of the utility model provides a kind of active power surge backup protection circuit breaker, to overcome the deficiency of appeal prior art.
The purpose of the utility model is to realize through following technical scheme:
A kind of active power surge backup protection circuit breaker comprises sampling inductance ab, bleeder circuit, current comparator IC1 and time comparator IC2, it is characterized in that: be parallel with resistance R 1 on the said sampling inductance ab, be in series with K switch 2 on the resistance R 1; Sampling inductance ab is connected with the anode of current comparator IC1 through circuit; The negative terminal of current comparator IC1 is connected with rectifier bridge D1 through circuit; Be provided with resistance R 2 between the negative terminal of current comparator IC1 and the rectifier bridge D1; The output of current comparator IC1 is connected with the anode of time comparator IC2; Be in series with resistance R 5, capacitor C2 and capacitor C1 between the anode of the output of current comparator IC1 and current comparator IC1, be in series with resistance R 3 between the negative terminal of the output of current comparator IC1 and current comparator IC1; The negative terminal of time comparator IC2 is connected with rectifier bridge D1 through circuit; The output of time comparator IC2 is connected with rectifier D1 through rectifier T1; Be in series with capacitor C3 and resistance R 7 between the negative terminal of the output of time comparator IC2 and time comparator IC2; Be in series with capacitor C2 between the output of time comparator IC2 and the time comparator IC2 anode and be parallel with resistance R 4, said rectifier bridge D1 drives L through circuit and is connected with K switch 1.
Be in series with rectifier D2, resistance R 8, resistance R 9 and resistance R 10 between the anode of said current comparator IC1 and the capacitor C3.
Said resistance R 2 and resistance R 3, resistance R 7 constitutes bleeder circuit respectively with resistance R 8.
The beneficial effect of the utility model is: the utility model changes the mode of the inside and outside protective device startup that waits power source surge protector element intensification startup power source surge protector passively; The size of the continuous current through initiatively measuring the flow path power source surge protector and the mode of duration length; Start the reserve breaker protector on one's own initiative, reach the purpose of isolating supply line at power source surge protector.
Description of drawings
According to accompanying drawing the utility model is done further explain below.
Fig. 1 is the circuit theory diagrams of the described active power surge backup protection circuit breaker of the utility model embodiment.
Embodiment
As shown in Figure 1; The described a kind of active power surge backup protection circuit breaker of the utility model embodiment; Comprise sampling inductance ab, bleeder circuit, current comparator IC1 and time comparator IC2; It is characterized in that: be parallel with resistance R 1 on the said sampling inductance ab, be in series with K switch 2 on the resistance R 1; Sampling inductance ab is connected with the anode of current comparator IC1 through circuit; The negative terminal of current comparator IC1 is connected with rectifier bridge D1 through circuit; Be provided with resistance R 2 between the negative terminal of current comparator IC1 and the rectifier bridge D1; The output of current comparator IC1 is connected with the anode of time comparator IC2; Be in series with resistance R 5, capacitor C2 and capacitor C1 between the anode of the output of current comparator IC1 and current comparator IC1, be in series with resistance R 3 between the negative terminal of the output of current comparator IC1 and current comparator IC1; The negative terminal of time comparator IC2 is connected with rectifier bridge D1 through circuit; The output of time comparator IC2 is connected with rectifier D1 through rectifier T1; Be in series with capacitor C3 and resistance R 7 between the negative terminal of the output of time comparator IC2 and time comparator IC2; Be in series with capacitor C2 between the output of time comparator IC2 and the time comparator IC2 anode and be parallel with resistance R 4, said rectifier bridge D1 drives L through circuit and is connected with K switch 1.
Be in series with rectifier D2, resistance R 8, resistance R 9 and resistance R 10 between the anode of said current comparator IC1 and the capacitor C3.
Said resistance R 2 and resistance R 3, resistance R 7 constitutes bleeder circuit respectively with resistance R 8.
During use, line bag L (circuit) drives K1; Sampling inductance ab the flow through electric current of power source surge protector of three-way power supply phase line of sampling; R2, R3 and R7, R8 constitutes bleeder circuit, the fiducial value of electric current and time is provided for current comparator IC1 and time comparator IC2; The sampled value of inductance ab is through R9, R11 current limliting, and D2 behind the C1 rectifying and wave-filtering, is input to the anode of current comparator IC1; If the sampled value of inductance ab is greater than current reference value (R2, the R3 dividing potential drop is given), IC1 is output as positive IC1 output and charges to C2 through R6, if the sampled value of inductance ab is kept greater than the current reference value, C2 will continue charging; After one section time-delay, the voltage of C2 rises, and wherein the gentle rise time of voltage ascending water of C2 rises certainly in (current-limiting resistor) RC loop that R6C2 constitutes; After the voltage of C2 rose to certain level, the positive terminal potential of IC2 was higher than the partial pressure value of R7, R8, and IC2 just is output as, and (transformer) T1 conducting makes L drive the K1 action; R5 is used for the bypass discharge of C2, and when the sampled value of inductance ab did not continue, the charging of C2 was through the R5 discharge.
In the above process, the sampled value of having only inductance ab is greater than certain value, and C2 could continue charging, finally makes the T1 conducting, drives the K1 action.Therefore, lightning wave is through out-of-date, although the electric current of the lightning protection for power supply of flowing through is enough big, because the weak point of holding time, the C2 undercharge is enough, not conducting of T1, and K1 also just is failure to actuate.As long as but the sampled value of inductance ab is greater than set point and when lasting, and (capacitor) C2 just can charge enough, the T1 conducting, and driving K1 moves.Reach when lightning protection device has little electric current to continue to pass through the purpose of backup protection device action.
The utility model adopts electric current and the mode of electric current stream duration of initiatively measuring the power source surge protector of flowing through to drive backup protection device off action; Big electric current (lightning current) through and during the duration short (us level); The backup protection device is not opened, and makes its safeguard function of back level power supply Surge Protector performance; But when having for a long time (ms level) to pass through the electric current of a certain size (mA level), start backup protection device off action, thereby when power source surge protector faces damage, break away from electrical network.
The utility model is not limited to above-mentioned preferred forms; Anyone can draw other various forms of products under the enlightenment of the utility model; No matter but on its shape or structure, do any variation; Every have identical with a application or akin technical scheme, all drops within the protection range of the utility model.
Claims (3)
1. an active power surge backup protection circuit breaker comprises sampling inductance ab, bleeder circuit, current comparator IC1 and time comparator IC2, it is characterized in that: be parallel with resistance R 1 on the said sampling inductance ab, be in series with K switch 2 on the resistance R 1; Sampling inductance ab is connected with the anode of current comparator IC1 through circuit; The negative terminal of current comparator IC1 is connected with rectifier bridge D1 through circuit; Be provided with resistance R 2 between the negative terminal of current comparator IC1 and the rectifier bridge D1; The output of current comparator IC1 is connected with the anode of time comparator IC2; Be in series with resistance R 5, capacitor C2 and capacitor C1 between the anode of the output of current comparator IC1 and current comparator IC1, be in series with resistance R 3 between the negative terminal of the output of current comparator IC1 and current comparator IC1; The negative terminal of time comparator IC2 is connected with rectifier bridge D1 through circuit; The output of time comparator IC2 is connected with rectifier D1 through rectifier T1; Be in series with capacitor C3 and resistance R 7 between the negative terminal of the output of time comparator IC2 and time comparator IC2; Be in series with capacitor C2 between the output of time comparator IC2 and the time comparator IC2 anode and be parallel with resistance R 4, said rectifier bridge D1 drives L through circuit and is connected with K switch 1.
2. active power surge backup protection circuit breaker according to claim 1 is characterized in that: be in series with rectifier D2, resistance R 8, resistance R 9 and resistance R 10 between the anode of said current comparator IC1 and the capacitor C3.
3. active power surge backup protection circuit breaker according to claim 1 is characterized in that: said resistance R 2 and resistance R 3, resistance R 7 constitutes bleeder circuit respectively with resistance R 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120193995U CN202150689U (en) | 2011-06-09 | 2011-06-09 | Active type power supply surge backup protection breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120193995U CN202150689U (en) | 2011-06-09 | 2011-06-09 | Active type power supply surge backup protection breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202150689U true CN202150689U (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120193995U Expired - Fee Related CN202150689U (en) | 2011-06-09 | 2011-06-09 | Active type power supply surge backup protection breaker |
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| Country | Link |
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| CN (1) | CN202150689U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013189197A1 (en) * | 2012-06-19 | 2013-12-27 | 华为技术有限公司 | Protection circuit, control method therefor, and telecommunication subrack equipment |
| CN106329507A (en) * | 2016-10-15 | 2017-01-11 | 浙江雷源电气有限公司 | SCB (special circuit breaker) backup protector and control method thereof |
| CN106385017A (en) * | 2016-09-23 | 2017-02-08 | 郑州云海信息技术有限公司 | Circuit protection device and system |
-
2011
- 2011-06-09 CN CN201120193995U patent/CN202150689U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013189197A1 (en) * | 2012-06-19 | 2013-12-27 | 华为技术有限公司 | Protection circuit, control method therefor, and telecommunication subrack equipment |
| CN106385017A (en) * | 2016-09-23 | 2017-02-08 | 郑州云海信息技术有限公司 | Circuit protection device and system |
| CN106329507A (en) * | 2016-10-15 | 2017-01-11 | 浙江雷源电气有限公司 | SCB (special circuit breaker) backup protector and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151112 Address after: 511453 Guangdong city of Guangzhou province Nansha District Dong Yong Zhen Shi Ji Cun two mud Street No. 149 Building No. 2 Patentee after: GUANGDONG RISON LIGHTNING PROTECTION TECHNOLOGY CO., LTD. Address before: Panyu District Long Beach West Road Guangzhou Guangdong province 510000 City No. 80 building two Room 502 Patentee before: He Xihua |
|
| 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: 20120222 Termination date: 20200609 |