CN102326309B - Electrical protection device and control method of the electrical protection device - Google Patents
Electrical protection device and control method of the electrical protection device Download PDFInfo
- Publication number
- CN102326309B CN102326309B CN201080008163.4A CN201080008163A CN102326309B CN 102326309 B CN102326309 B CN 102326309B CN 201080008163 A CN201080008163 A CN 201080008163A CN 102326309 B CN102326309 B CN 102326309B
- Authority
- CN
- China
- Prior art keywords
- protection component
- protective device
- electrical
- current
- comb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to an electrical protection device (SCH) for arrangement between at least one load (V1, V2) and a power supply, wherein said protection device (SCH) comprises a current limiting function and a switch-off function. The protection device (SCH) is composed of several current-limiting or switching-off protection elements (E1... En), the outputs of which are connected in parallel. The invention further relates to a control method of the electrical protection device (SCH).
Description
Technical field
The present invention relates to the electrical protective device for being arranged between at least one load and power supply, wherein said protective device has current-limiting function with adjustable current limit value and cut-out function.In addition, the present invention relates to the control method of electrical protective device.
Background technology
The disturbed condition of electrical protective device in electric equipment may cause the place of endangering people and/or machine to be applied everywhere.Especially when by power supply give a load or multiple load supplying need electrical protective device.Described electrical protective device is disposed between power supply and one or more load, to be decreased through the electric current of one or more load in case of interferers and the open circuit when lasting interference.
Such as DE 101 49 458 C1 illustrates the protective device between DC power supply and load.At this, two thyristors are in parallel in order to improve open circuit fail safe.Each thyristor and half maximum load electric current are coordinated (abstimmen).Once a semiconductor switch open circuit, then whole load current flows through second half conductor switch, makes this second half conductor switch also open circuit.
Known a kind of protective device for AC applications from WO 96/14684 A1.This protective device comprises two protection components pair at this, and it causes open circuit in an interference situation.Be divided into two protection components to the loop resistance for reducing protective device.
Particularly when for when power supply for multiple load branch feeding meaningfully, utilize electrical protective device to ensure each load branch.If there is interference in load branch, then this load branch is by current limliting or by open circuit, and does not endanger the power supply to all the other load branches.When not having this protection precautionary measures, out of order load branch makes power supply bear a heavy burden in the mode of the load current exceeding setting.So power supply, especially Switching Power Supply (Schaltnetzteil) even proceed to current-limit mode and the open circuit when lasting interference if desired.So all load branches no current.When the mechanical route protection switch respectively by serial connection ensures when the load at power output end place, this occurs equally, because this line protection switch needs obvious overcurrent for triggering.Power supply often can not reoffer this overcurrent except powering for remaining load.
This application of electrical protective device as described in the preamble causes, and must there is the described electrical protective device with the different current limit values for triggering the limit given in advance.Especially when industrial equipment, rule is, is multiple load branch feedings of different capacity by means of power supply.Therefore each load branch comprises the electrical protective device with current limit values different respectively.Also occur when industrial equipment, only there is a load branch, it comprises the many and load of few (einmal mehr und einmal weniger) for a moment a little while due to the working condition changed.Also the electrical protective device with different current limit value must be used in this case.
Know such as having the electrical protective device of the power supply of multiple load branch from WO 01/41277 A2 and EP 0933849 Al.At this, for each load branch will have the analysis of the semiconductor switch, current measurement device and the operational amplifier form that adjust possibility or regulate in the connection line of electronic installation access between power supply and load.The efficiency of corresponding semiconductor switch is designed according to defined nominal current.When connecting less load, triggering the limit and being adjusted to the value less than described nominal current.Often cause unwelcome situation thus, namely the efficiency of corresponding semiconductor switch and respective drive circuit is not fully utilized.Thus this solution causes having the electrical protective device over dimensioning that poor cost uses relation usually.
Therefore, the electrical protective device for each load branch is arranged conventionally also is known.At this, prevent over dimensioning by providing the product line with meticulous nominal current classification.Thus in each load branch, access has the corresponding electrical protective device of required nominal current.It is here disadvantageous that required high storehouse management expends.
Another known electric ensuring equipment (Absicherung) specifies, in each load branch, arrange buck converter, and it connects and only timing in current-limit mode (takten) in an interference situation in normal operation.AT 504 528 A describes this solution.
Summary of the invention
The present invention based on task be, for the electrical protective device starting described type illustrates relative to the improvement of prior art.
According to the present invention, described task solves by independent claims 1 and 11 and by the advantageous extension scheme according to dependent claims.
At this, described protective device is made up of the protection component of multiple current limliting or open circuit, and current limit value is adjusted by this way, makes output in a part for protection component in parallel.A kind of simple measures utilizing current limit value required respectively to ensure a load branch or multiple load branch is described by this way.Corresponding current limit value draws in this portion of electrical current limiting value sum by the protection component in output end parallel connection.
Protective device according to the present invention such as comprises the protection component of optional quantity at this, its with mode cause for guarantee protection (Absicherungsschutz) required for be connected load, and be not overdimensioned at this.In addition protective device can be divided into multiple protective device block, so that in this way for different load or load branch realize the escape way of the concurrent working of multiple separation.At this, for different load, differently many protection components are interconnected at output end.Interconnective protection component forms block respectively, and described piece has for the guarantee protection required for load connected respectively.
Corresponding control method regulation, when reaching distributed portion of electrical current limiting value given in advance, the electric current of this protection component of protection component restricted passage, until the critical parameters of protection component exceed maximum given in advance and protection component open circuit.Therefore, in normal operation, such was the case with divides load current by the protection component of parallel connection, make the electric current being greater than portion of electrical current limiting value not flow through in protection component any one.When reaching the portion of electrical current limiting value of protection component, be reduced by the electric current of this protection component.Raised with identical degree by the electric current of all the other protection components with this protection component parallel connection.Balance the tolerance of each protection component in this way.
Advantageous extension scheme prescribes of the present invention, each protection component has fixing portion of electrical current limiting value, protection component is constructed simply and thus is cheap at manufacture view.
At this, if the current limit value of protective device or protective device block is configured to the identical large portion of electrical current limiting value sum of protection component in parallel, be then favourable.Therefore the protection component by same configuration forms different protective device or the protective device block with the current limit value be graded alternatively.Utilize an only protection component embodiment can ensure the load branch with maximum different capacity, and do not occur the over dimensioning of protective device.
Simple embodiment is implemented by this way, and the protection component of protective device is connected by connection comb (Verbindungskamm) at output end.Thus the wiring of the costliness in distribution box is cancelled.
Advantageously, connect comb and weld with the output of protection component, contact with foreseeable (berechenbar) reliably between each output making to be provided in protection component.
In addition, if the connection comb between protection component there is respectively can burble point, the especially specified breakaway poing of manual separation, be then favourable.Protective device comprises at this can the protection component of preselected number, and it is connected at output end.In installation process, by interrupting connecting or multiple connection respectively between two protection components, protective device is divided into as required multiple protective device block.At this, each in the protective device block produced includes multiple protection component, and it is for ensureing that the load branch connected is needs.
In useful flexible program, the connection comb between protection component has bulkily the separation member that (sperrig) is formed respectively, and described separation member manually can be separated from connection comb.For being separated comb, separation member is removed (herausl sen), and wherein huge shape causes separation member by mistake not fall into contiguous device housings by ventilation hole.
In addition it is advantageous that arrange mark under burble point or separation member, wherein become visible by marking after fractionation, this mark shows that comb is separated.
Another embodiment specifies, protective device is loaded in power supply.Additionally simplify the installation especially in distribution box thus.
In expansion scheme of the present invention, each protection component includes driver element and has the current limiting element of variable loop resistance.At this, by driver element according to the electric current determination loop resistance (Druchgangswiderstand) flowing through current limiting element.Being controlled in is such as carry out with following form, and the conduction pathway (Durchleitkanal) namely reaching the protection component of portion of electrical current limiting value becomes (hochohmiger) of slight higher ohmic properties.At this, adjustable type (abregelnd) protection component only constructs so much more (soviel mehr) resistance, and the tolerance of protection component is compensated.
Specify in the improvement project of control method; voltage is detected and when reaching voltage drop value given in advance at each output of protection component; for binding hours interval given in advance; the electric current of relevant this protection component of protection component restricted passage, and protection component open circuit after this binding hours interval expires.Therefore, only after the voltage of the output of the protection component of all parallel connections clearly declines, just start timing element, make the slight interference of load current or uneven distribution not cause open circuit.
At this, in addition advantageously, once turn-off time interval given in advance expires and/or the critical parameters of corresponding protection component fall under connection value given in advance, then, after open circuit, all protection components are reset.Such as resetted by all timing elements, the on off state making all protection components not rely on moment takes identical output state again.Thus, arbitrary protection component output can wiring and being again activated by common reset mutually.
Valuably, the chip temperature of corresponding protection component is detected as critical parameters.Guarantee to only have when heat load becomes too large due to adjustment process by this way, protective device or the just open circuit of relevant protective device block.
Following reference accompanying drawing exemplarily sets forth the present invention.In a schematic manner:
Fig. 1 illustrates the circuit structure of the protective device with two load branch,
Fig. 2 illustrates the connection comb with burble point.
Embodiment
Protective device SCH with multiple protection component E1...En shown in Figure 1.At this, most a junior three protection component El, E2, E3 are unified into the first protective device block Bll and remaining protection component E4...En is unified into the second protective device block Bl2.First load or load branch V1 to be connected on the feed voltage U of power supply via the first protective device block Bll and the second load or load branch V2 are connected on the feed voltage U of power supply via the second protective device block B12.
Each protection component El... En includes current limiting element Tl... Tn and current detecting unit I1... In.Corresponding current limiting element Tl... Tn is such as configured to transistor and corresponding current detecting unit I1... In is configured to current converter.By corresponding driver element Al... An, pass through electric current according to the Current Control detected respectively by current limiting element Tl... Tn.For each driver element Al... An portion of electrical current limiting value given in advance.Respectively at the protection component El that output end is connected, the portion of electrical current limiting value of E2, E3 or E4...En with mode draw the current limit value of relevant block Bl1 or Bl2.Driver element Al... An or with simulation mode be constructed or be configured to microcontroller.
For fire prevention reason, before each current limiting element Tl... Tn, connect another safeties Sl... Sn.At this or fuse or line protection switch.
The operation principle of protective device SCH is set forth according to the first protective device block Bl1.Load or load branch V1 are connected on the lead-out terminal Kl1 of block Bl1.If the connection of output end realizes by connection comb Ka, then two other lead-out terminal Kl2, Kl3 keeps the free time.At this, first connects comb section Ka1 connects the output of first piece of Bl1 and second connects the output that comb section Ka2 connects second piece of Bl2.To this alternately, the connection of output end can via corresponding terminal Kll, and Kl2, Kl3 or Kl4...Kln are undertaken by line bridge.
When connecting by connection comb Ka, each lead-out terminal Kll... Kln must be designed for the current limit value of maximum possible.In normal operation, the load current drawn by load or load branch Vl will not reach the current limit value of block Bl1.So load current is divided into three protection component El, on E2, E3 according to loop resistance.Tolerance may cause protection component El or E2 or E3 to reach its portion of electrical current limiting value at this.So relevant driver element Al or A2 or A3 readjustment flows through the electric current of described protection component E1 or E2 or E3, more multiple current is made correspondingly to flow through other two protection component E1, E2 or E2, E3 or E1, E3.For to each protection component E1, utilize current limiting element T1, the operational maximal efficiency of T2, T3, corresponding current limiting element T1 when this different power divider of E2, E3, the chip temperature of T2, T3 is considered.If reach the maximum chip temperature of protection component E1 or E2 or E3, then described protection component open circuit.Therefore protection component E1 in parallel, E2 or E2, E3 or E1, E3 must bear overload.When exceeding the chip temperature of maximum permission, the also open circuit of these protection components.
As the replacement scheme that chip temperature detects, the duration only for the time interval given in advance allows overload.At this, only at the protected location E1 of parallel connection, after the voltage of the output of E2, E3 clearly declines, just timing element can be started.Sequential sampling can be carried out to each protection component output voltage in this case, because this control unit does not know which protected location E1...En is in parallel by higher level's control unit.Current limiting element T1 is inferred, the heat load of T2, T3 from output voltage.
Only have after this, after the effective binding hours determined (during in this effective binding hours, load voltage is lowered effectively) expires, relevant block Bl1 is just by open circuit, and its mode is, such as, by higher level's control unit, break signal is sent to driver element A1, A2, A3.When ensuing connection process, the cooling time for limiting part temperature should be considered.At this, all timing elements reset by such as, reset by manual triggers.Reset is prohibited so long-time, until or the turn-off time given in advance expires or critical parameters drop under connection value given in advance.
Another embodiment specifies, detects at corresponding current limiting element T1, the voltage drop at T2, T3 place.
When the time interval of the determination for current limliting given in advance, additionally can testing environment temperature.The load duration allowed at relatively low ambient temperatures extends.And when detecting corresponding chip temperature, consider ambient temperature together.
For the output safety at protection component E1...En with foreseeable connection, arrange that to connect comb Ka be significant.This connection comb is shown in Figure 2 and to conduct electricity with the output of protection component (E1...En) by means of corresponding joint and be connected.Valuably, this realizes by being welded in printed circuit board LP by corresponding weld tabs.Each weld tabs is all connected with protection component output at this.Utilize this connection comb Ka, between each protection component E1...En, there is corresponding large circuit cross section, make a large amount of protection component El... En can be in parallel.In addition, install and expend remarkable reduction, especially can the burble point Br of manual separation when arranging between protection component El... En, when being preferably configured to specified breakaway poing.According to the load that will connect or load branch V1, V2, connection breaking comb Ka in this burble point Br place, makes to connect comb Ka and is divided into multiple connection comb section Ka1, Ka2.
In addition, connect comb Ka and such as have separation member TS, described separation member allows to introduce torque in the scope of burble point Br.By repeatedly reversing relevant separation member TS, in the scope of this burble point Br, there is flow harden and occur in the fracture desired by separation member TS both sides subsequently.Also separation member TS only can be embodied as resectable part.It should be noted that separation member TS has corresponding size in each case, so that it is not by mistake fallen by the ventilation hole of device housings.This such as can realize in the following manner, and namely separation member TS is compared with other circuit cross section or be configured to larger smooth part or larger bending part.In addition, connect comb Ka and can be coated with color marker.Described being marked at when splitting out separation member TS is released, clearly to show, which protection component E1...En is interconnected or is separated from each other.
Can guarantee to only have when protective device does not have voltage in such an implementation, connect comb and be only addressable.Such as arrange cover plate, it only just can be opened when protective device open circuit for this reason.As an alternative, SI semi-insulation ground is implemented to connect comb.
Claims (14)
1. for being arranged at least one load (V1, V2) electrical protective device (SCH) and between power supply, wherein said protective device (SCH) has current-limiting function with adjustable current limit value and cut-out function, it is characterized in that, protective device (SCH) is made up of the protection component (E1...En) of multiple current limliting and open circuit, wherein each protection component (El... En) includes current limiting element (Tl... Tn), current detecting unit (I1... In) and driver element (Al... An), and described current limit value is adjusted in the following manner, namely in a part for protection component, output is in parallel, its mode is, the protection component (E1...En) of protective device (SCH) connects by connection comb (Ka) at output end.
2. according to the electrical protective device of claim 1, it is characterized in that, each protection component (E1...En) all has fixing portion of electrical current limiting value.
3. according to the electrical protective device of claims 1 or 2; it is characterized in that; protective device (SCH) or protective device block (Bll; Bl2) current limit value is configured to the identical large portion of electrical current limiting value sum of protection component in parallel (E1...En); wherein said protective device is divided into multiple protective device block as required, and wherein said protective device block is formed by the interconnective protection component of output end.
4. according to the electrical protective device of claim 1 or 2, it is characterized in that, connect comb (Ka) and weld with the output of protection component (E1...En).
5. according to the electrical protective device of claim 1 or 2, it is characterized in that, the connection comb (Ka) between protection component (E1...En) has at least one respectively can the burble point (Br) of manual separation.
6. according to the electrical protective device of claim 5, it is characterized in that, the connection comb between protection component (E1...En) has the separation member formed bulkily respectively, and described separation member manually can be isolated from connection comb.
7. according to the electrical protective device of claim 5, it is characterized in that, under burble point or separation member, settle mark, this mark shows that comb is separated.
8. according to the electrical protective device of claim 6, it is characterized in that, under burble point or separation member, settle mark, this mark shows that comb is separated.
9. according to the electrical protective device of claims 1 or 2, it is characterized in that, protective device (SCH) is loaded in power supply.
10. according to the electrical protective device of claims 1 or 2; it is characterized in that, each protection component (El... En) comprise driver element (Al... A2) and have variable loop resistance current limiting element (Tl... Tn) and by driver element (Al... An) according to flowing through the electric current determination loop resistance of current limiting element (Tl... Tn).
11. according to the control method of the electrical protective device of one of claim 1 to 10; it is characterized in that; when reaching distributed portion of electrical current limiting value given in advance; the electric current of protection component (El... En) described in protection component (El... En) restricted passage, until the critical parameters of protection component (El... En) exceed maximum given in advance and protection component (El... En) open circuit.
12. according to the control method of claim 11; it is characterized in that; voltage is detected and when reaching voltage drop value given in advance at each output of protection component (El... En); for binding hours interval given in advance; the electric current of relevant protection component (El... En) restricted passage protection component (El... En), and protection component (El... En) open circuit after binding hours interval expires.
13. according to the control method of claim 11 or 12; it is characterized in that; once turn-off time interval given in advance expires and/or the critical parameters of corresponding protection component (El... En) drop under connection value given in advance; after open circuit, all protection components (El... En) are resetted.
14., according to the control method of claim 11, is characterized in that, the chip temperature of corresponding protection component (El... En) is detected as critical parameters.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA271/2009 | 2009-02-18 | ||
| AT2712009A AT507083B1 (en) | 2009-02-18 | 2009-02-18 | ELECTRICAL PROTECTION DEVICE AND CONTROL METHOD OF THE ELECTRICAL PROTECTION DEVICE |
| PCT/EP2010/051137 WO2010094548A1 (en) | 2009-02-18 | 2010-02-01 | Electrical protection device and control method of the electrical protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102326309A CN102326309A (en) | 2012-01-18 |
| CN102326309B true CN102326309B (en) | 2015-06-03 |
Family
ID=41664436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080008163.4A Expired - Fee Related CN102326309B (en) | 2009-02-18 | 2010-02-01 | Electrical protection device and control method of the electrical protection device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2399327A1 (en) |
| CN (1) | CN102326309B (en) |
| AT (1) | AT507083B1 (en) |
| WO (1) | WO2010094548A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723699B (en) * | 2012-06-15 | 2016-06-08 | 北京鼎汉技术股份有限公司 | A kind of DC power supplier guard method and device |
| NL2012369B1 (en) * | 2014-03-05 | 2015-12-03 | Willem Blanke Francois | Monitoring system for an electrical installation, distribution device and method thereof. |
| CN106848998B (en) * | 2017-02-28 | 2019-05-24 | 浙江大华技术股份有限公司 | A kind of power output protection circuit and device |
| DE102017220711A1 (en) * | 2017-11-20 | 2019-05-23 | Ellenberger & Poensgen Gmbh | Protective device and method for operating such a protective device |
| CN112186721B (en) * | 2020-09-30 | 2021-06-04 | 江苏卫川物联科技有限公司 | Electric fire-proof current-limiting protector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996014684A1 (en) * | 1994-11-02 | 1996-05-17 | Raychem Corporation | Solid state, resettable overcurrent protection device |
| WO2000022638A1 (en) * | 1998-10-09 | 2000-04-20 | Abb Research Ltd | New electrical switchgear |
| CN101114737A (en) * | 2006-06-16 | 2008-01-30 | 威德米勒界面有限公司及两合公司 | Terminal strip with encoding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191948B1 (en) | 1998-01-29 | 2001-02-20 | Ellenberger & Poensgen Gmbh | Power supply device |
| AT409565B (en) | 1999-12-01 | 2002-09-25 | Siemens Ag Oesterreich | POWER UNIT |
| DE10149458C1 (en) * | 2001-10-08 | 2002-12-05 | Leoni Bordnetz Sys Gmbh & Co | Conductor network, especially 42 Volt on-board vehicle electrical system, has supply line formed by 2 parallel conducting lines, each containing fuse, to protect network against serial spark |
| AT504528B1 (en) | 2007-02-16 | 2008-06-15 | Siemens Ag Oesterreich | Security circuit, particularly step down controller for power supply feeding at output of direct current system, is disposed on outlet of power supply and switch element is disposed between positive power supply clamp |
-
2009
- 2009-02-18 AT AT2712009A patent/AT507083B1/en not_active IP Right Cessation
-
2010
- 2010-02-01 CN CN201080008163.4A patent/CN102326309B/en not_active Expired - Fee Related
- 2010-02-01 WO PCT/EP2010/051137 patent/WO2010094548A1/en active Application Filing
- 2010-02-01 EP EP10702661A patent/EP2399327A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996014684A1 (en) * | 1994-11-02 | 1996-05-17 | Raychem Corporation | Solid state, resettable overcurrent protection device |
| WO2000022638A1 (en) * | 1998-10-09 | 2000-04-20 | Abb Research Ltd | New electrical switchgear |
| CN101114737A (en) * | 2006-06-16 | 2008-01-30 | 威德米勒界面有限公司及两合公司 | Terminal strip with encoding device |
Also Published As
| Publication number | Publication date |
|---|---|
| AT507083A4 (en) | 2010-02-15 |
| EP2399327A1 (en) | 2011-12-28 |
| CN102326309A (en) | 2012-01-18 |
| AT507083B1 (en) | 2010-02-15 |
| WO2010094548A1 (en) | 2010-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105493397B (en) | The application of the circuit arrangement and the circuit arrangement of photovoltaic DC-to-AC converter for breaker electric discharge | |
| CN102326309B (en) | Electrical protection device and control method of the electrical protection device | |
| CN103166439B (en) | A kind of essential safe type energy limited circuit | |
| US20090109590A1 (en) | Self-protected solid-state electrical switching device | |
| US8724280B2 (en) | Surge protection | |
| CN102377174B (en) | Power supply | |
| US6639389B2 (en) | Arrangement and method for protecting multiple voltage supply systems against voltage arc-over between different voltage planes and against pole reversal from the outside | |
| WO2015149994A1 (en) | Battery system with a battery for supplying a high-voltage network and at least one switching unit for limiting a residual current flowing across the battery and the high-voltage terminals of the battery and/or for limiting a voltage applied from the battery across the high-voltage terminals of the battery to the high-voltage network and a corresponding method | |
| CN108604791A (en) | Failure of current device and harness | |
| CA2648610A1 (en) | Rechargeable battery pack | |
| EP1983630A3 (en) | Secondary protection approach for power switching applications | |
| US7944664B2 (en) | Safety device for a semiconductor switch | |
| CN104603906A (en) | Fuse failure display | |
| CN102369789B (en) | Overvoltage protection for a bus device | |
| CN110071487A (en) | Electric protection circuit arrangement | |
| CN110268493B (en) | Low-voltage protection switch unit | |
| EP2424061A2 (en) | Branch circuit protection with in-line solid state device | |
| US9462655B1 (en) | Circuit and method for monitoring functionality of an electronic surge suppressor | |
| WO2006129005A3 (en) | Overvoltage protection and electronic circuit comprising such a device | |
| CN110085465A (en) | Under-voltage protection switching device | |
| JP2014512789A (en) | Electrical equipment for short-circuit protection of three-phase loads in a three-phase system | |
| CN105814782B (en) | For the circuit device by means of special operation method urgent operation polyphase voltage converter | |
| DE102013012578B4 (en) | Device for securing an electrical line and method for operating a device arranged on an electrical line | |
| US7064448B2 (en) | Power controller with bond wire fuse | |
| CN113595537A (en) | Active disconnect device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150603 Termination date: 20190201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |