CN106451335B - SPD back-up protection devices based on electromagnetic differential - Google Patents
SPD back-up protection devices based on electromagnetic differential Download PDFInfo
- Publication number
- CN106451335B CN106451335B CN201610891558.2A CN201610891558A CN106451335B CN 106451335 B CN106451335 B CN 106451335B CN 201610891558 A CN201610891558 A CN 201610891558A CN 106451335 B CN106451335 B CN 106451335B
- Authority
- CN
- China
- Prior art keywords
- power frequency
- electromagnetic
- frequency over
- electromagnetic differential
- spd
- 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.)
- Active
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
Abstract
The invention discloses a kind of SPD back-up protection devices based on electromagnetic differential are related to lightning surge pressure protective device.The present invention includes SPD（20）Line terminals are crimped with screw（30）；It is provided with protection location（10）；Protection location（10）, screw crimp line terminals（30）And SPD（20）It is sequentially connected；The protection location（10）Including contact switch（11）, electromagnetic differential power frequency over-current detector（12）, overcurrent tripping mechanism（13）, closing by hand handle（14）And indicating fault（15）.The present invention crimps line terminals, easy-to-connect using the screw of Conventional compact short-circuiting device；Using electromagnetic differential power frequency over-current detector, the performance that there is the dropout less than 1A power currents, do not thread off under the action of amplitude thunder and lightning lighting surge；Under the effect of thunder and lightning lighting surge, low residual voltage is presented；Excellent lightning protection performance, has ensured the safe to use of system, is suitable for the back-up protection of all kinds of SPD.
Description
Technical field
The present invention relates to lightning surge pressure protective device more particularly to a kind of SPD back-up protections based on electromagnetic differential
Device cuts off failure SPD in SPD short troubles from circuit.
Background technology
Surge protector is used together known, effect with the overcurrent protections such as breaker or fusing road
For when short trouble occurs in surge protector, overcurrent protection opens it from system break, continue event to prevent locking system
The presence of barrier.
In a certain range, the thunder and lightning lighting surge tolerance of existing breaker and action（It threads off）Electric current is in positive tropism
Relationship；Briefly, the action of breaker（It threads off）Electric current is smaller, and surge tolerance is also smaller, and surge tolerance is high
Breaker, action（It threads off）Electric current is also larger.
According to relevant criterion and actual use situation, the reserve protection for thunder and lightning lighting Surge Protector will meet
Three basic demands：
First, this protective device is intended merely to protection surge protector, is a kind of terminal device protective device,
Action should will influence the power supply of circuit miscellaneous equipment prior to prime line protective devices, otherwise, meanwhile, action setting valve is answered
Failure leakage current matches when working with protected SPD, should be less than 1A（Industrial frequency AC）；
Second, the surge ability to bear of this protective device is not lower than the maximum electric discharge electricity of protected surge protector
Stream, otherwise, the damage for being protected equipment may be caused in surge current range by normally releasing in surge protector；
Third, the residual voltage of this protective device and protected thunder and lightning lighting Surge Protector（Protect voltage）It is not to be exceeded
The insulation tolerance level of protected circuit or equipment, otherwise, surge protector loses protecting effect.
Since Conventional compact breaker is used for the back-up protection of thunder and lightning lighting Surge Protector, because its protection technique is to be based on
The protection feature of power current does not account for the action request of short-circuiting device under surge characteristic, so it is difficult to meeting above-mentioned three simultaneously
Basic demand.
For example, the low protective device of action current may meet the requirement preferentially acted, but its thunder and lightning lighting surge is born
Ability is often very low, and residual voltage is also very high；The high protective device of action current, surge ability to bear and residual voltage can meet
It is required that but its requirement preferentially acted differ and surely meet.
Invention content
The purpose of the present invention is that overcomes shortcoming and defect of the existing technology, provides a kind of based on electromagnetic differential
SPD back-up protection devices；This protector adjusts action current and lightning current impact with that can bear high lightning current impact, smaller power frequency
The performance characteristics of low residual voltage under effect.
The technical solution adopted in the present invention is：
Line terminals are crimped including protected object SPD and connector screw；
It is provided with protection location；
Protection location, screw crimping line terminals and SPD are sequentially connected.
The protection location includes contact switch, electromagnetic differential power frequency over-current detector, overcurrent tripping mechanism, closes manually
Sneek and indicating fault；
Its position and connection relation are：
Contact switch and electromagnetic differential power frequency over-current detector are connected in main circuit；
Overcurrent tripping mechanism is disconnected to contact switch by electromagnetic core and electromagnetic differential power frequency over-current detector mechanical linkage
It opens；
Closing by hand handle is set to the outside of overcurrent tripping mechanism, is closed to contact switch.
Compared with existing SPD back-up protections device technology, patent of the present invention has the advantages that：
1. the screw using Conventional compact short-circuiting device crimps line terminals, easy-to-connect；
2. using electromagnetic differential power frequency over-current detector, there is the dropout less than 1A power currents, in amplitude
The performance that do not thread off under the action of thunder and lightning lighting surge；
3. under the effect of thunder and lightning lighting surge, low residual voltage is presented；
In short, excellent lightning protection performance, has ensured the safe to use of system, after being suitable for all kinds of SPD
Standby protection.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of electromagnetic differential power frequency over-current detector 12.
In figure：
10-protection locations 10,
11-contact switch,
12-electromagnetic differential power frequency over-current detectors,
121-power frequency over-current detection coils, 122-electromagnetic differential coils,
123-non-linear thunder and lightning lighting surge switches, 124-electromagnetic cores；
13-overcurrent tripping mechanisms,
14-closing by hand handles,
15-indicating fault；
20-SPD,
21-Zinc-oxide piezoresistors；
30-screws crimp line terminals.
Specific implementation mode
It is described in detail with reference to the accompanying drawings and examples：
1, overall
Such as Fig. 1, the present invention includes protected object SPD20 and connector screw crimping line terminals 30；
It is provided with protection location 10；
Protection location 10, screw crimping line terminals 30 and SPD20 are sequentially connected.
2, functional component
1）Protection location 10
Such as Fig. 1, protection location 10 includes contact switch 11, electromagnetic differential power frequency over-current detector 12, overcurrent tripping mechanism
13, closing by hand handle 14 and indicating fault 15；
Its position and connection relation are：
Contact switch 11 and electromagnetic differential power frequency over-current detector 12 are connected in main circuit；
Overcurrent tripping mechanism 13 is by electromagnetic core 124 and 12 mechanical linkage of electromagnetic differential power frequency over-current detector, to touching
Point switch 11 disconnects；
Closing by hand handle 14 is set to the outside of overcurrent tripping mechanism 13, is closed to contact switch 11.
（1）Contact switch 11
Contact switch 11 is a kind of general-purpose device；
Its function is disconnection and closed circuit.
（2）Electromagnetic differential power frequency over-current detector 12
Such as Fig. 2, electromagnetic differential power frequency over-current detector 12 includes power frequency over-current detection coil 121, electromagnetic differential coil
122, non-linear thunder and lightning lighting surge switch 123 and electromagnetic core 124；
It is wound on electromagnetic core 124 respectively around to opposite power frequency over-current detection coil 121 and electromagnetic differential coil 122
Outside, the bottom end of power frequency over-current detection coil 121 and the bottom end of electromagnetic differential coil 122 are connected to screw crimping line terminals 30；
The top of power frequency over-current detection coil 121 is connected to the bottom end of contact switch 11, and the top of electromagnetic differential coil 122 passes through non-linear
The bottom end of the contact point switch 11 again of thunder and lightning lighting surge switch 123.
（3）Overcurrent tripping mechanism 13
Overcurrent tripping mechanism 13 is a kind of current mechanism, i.e., a kind of small air breaker；
Its function is：When there is overcurrent, under the promotion of electromagnetic core 124, contact switch 11 is disconnected.
（4）Closing by hand handle 14
Closing by hand handle 14 is a kind of closing by hand switch；
Its function is：The contact switch 11 that will be switched off is closed.
（5）Indicating fault 15
Indicating fault 15 is a kind of mark being printed on closing by hand handle 14, what display contact switch 11 was closed or disconnected
State.
2）SPD20
SPD20 is a kind of lightning surge protection, and core component is Zinc-oxide piezoresistor 21.
3）Screw crimps line terminals 30
It is a kind of general part that screw, which crimps line terminals 30,.
3, operation principle
Using electromagnetic differential principle.
Core of the invention device is electromagnetic differential power frequency over-current detector 12, by 1 power current detection coil 121,
Coaxially and around 1 around to opposite electromagnetic differential coil 122 and non-linear thunder and lightning lighting surge switch 123 form；Electromagnetic differential
Coil 122 is incorporated to power current detection coil 121 after connecting with 1 non-linear thunder and lightning lighting surge switch element 123.
When power current detection coil 121 is flowed through less than power frequency electric flow valuve is adjusted, overcurrent tripping mechanism 13 is failure to actuate, and touches
Point switch 11 remains closed；
When power current detection coil 121 is flowed through more than power frequency electric flow valuve is adjusted, overcurrent tripping mechanism 13 acts, contact
Switch 11 disconnects；
When there is thunder and lightning lighting surge, non-linear thunder and lightning lighting surge switch 123 is closed automatically, electromagnetic differential coil
122 it is in parallel with power current detection coil 121 flow through the identical surge current of amplitude, because 2 coils are around on the contrary, its axial direction
Magnetic flux difference generate electromagnetic force be zero or less than power current detection coil 121 setting valve, overcurrent tripping mechanism 13 is failure to actuate,
Contact switch 11 remains closed.
Claims (1)
1. a kind of SPD back-up protection devices based on electromagnetic differential, including SPD (20) and screw crimping line terminals (30)；
It is provided with protection location (10)；
Protection location (10), screw crimping line terminals (30) and SPD (20) are sequentially connected；
The protection location (10) includes contact switch (11), electromagnetic differential power frequency over-current detector (12), overcurrent tripping machine
Structure (13), closing by hand handle (14) and indicating fault (15)；
Its position and connection relation are：
Contact switch (11) and electromagnetic differential power frequency over-current detector (12) are connected in main circuit；
Overcurrent tripping mechanism (13) is right by electromagnetic core (124) and electromagnetic differential power frequency over-current detector (12) mechanical linkage
Contact switch (11) disconnects；
Closing by hand handle (14) is set to the outside of overcurrent tripping mechanism (13), is closed to contact switch (11)；
It is characterized in that：
The electromagnetic differential power frequency over-current detector (12) includes power frequency over-current detection coil (121), electromagnetic differential coil
(122), non-linear thunder and lightning lighting surge switch (123) and electromagnetic core (124)；
It is wound on electromagnetic core (124) respectively around to opposite power frequency over-current detection coil (121) and electromagnetic differential coil (122)
Outside, the bottom end of power frequency over-current detection coil (121) and the bottom end of electromagnetic differential coil (122) are connected to screw crimping line end
Sub (30)；The top of power frequency over-current detection coil (121) is connected to the bottom end of contact switch (11), electromagnetic differential coil (122)
Top by non-linear thunder and lightning lighting surge switch (123) again contact point switch (11) bottom end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891558.2A CN106451335B (en) | 2016-10-12 | 2016-10-12 | SPD back-up protection devices based on electromagnetic differential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891558.2A CN106451335B (en) | 2016-10-12 | 2016-10-12 | SPD back-up protection devices based on electromagnetic differential |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106451335A CN106451335A (en) | 2017-02-22 |
| CN106451335B true CN106451335B (en) | 2018-07-31 |
Family
ID=58173741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610891558.2A Active CN106451335B (en) | 2016-10-12 | 2016-10-12 | SPD back-up protection devices based on electromagnetic differential |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106451335B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114512975B (en) * | 2022-04-19 | 2022-07-12 | 合肥航太电物理技术有限公司 | Multi-channel lightning electromagnetic protection real-time fault monitoring suppressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202888817U (en) * | 2012-10-24 | 2013-04-17 | 孙巍巍 | Novel surge protection device (SPD) |
| CN103474952A (en) * | 2013-09-24 | 2013-12-25 | 武汉微创元电子科技有限责任公司 | Short-circuit protection device for power frequency current and lightning surge automatic selection channel |
| CN204967222U (en) * | 2015-09-16 | 2016-01-13 | 孙麓轩 | Overcurrent protection structure |
| CN206293872U (en) * | 2016-10-12 | 2017-06-30 | 武汉爱劳高科技有限责任公司 | A kind of SPD back-up protection devices based on electromagnetic differential |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011001509B4 (en) * | 2011-03-23 | 2016-04-07 | Phoenix Contact Gmbh & Co. Kg | Surge protection device |
-
2016
- 2016-10-12 CN CN201610891558.2A patent/CN106451335B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202888817U (en) * | 2012-10-24 | 2013-04-17 | 孙巍巍 | Novel surge protection device (SPD) |
| CN103474952A (en) * | 2013-09-24 | 2013-12-25 | 武汉微创元电子科技有限责任公司 | Short-circuit protection device for power frequency current and lightning surge automatic selection channel |
| CN204967222U (en) * | 2015-09-16 | 2016-01-13 | 孙麓轩 | Overcurrent protection structure |
| CN206293872U (en) * | 2016-10-12 | 2017-06-30 | 武汉爱劳高科技有限责任公司 | A kind of SPD back-up protection devices based on electromagnetic differential |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106451335A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105594084B (en) | High-speed switch fault current limiter and current limiter system | |
| US9219360B2 (en) | Safe quick disconnect leakage protector | |
| AU2009214807B2 (en) | A Residual-Current Circuit Breaker | |
| EP2747116B1 (en) | Three-phase ground fault circuit interrupter | |
| CN211428100U (en) | Circuit protection device | |
| US9300126B2 (en) | Electrical apparatus for the short-circuit protection of a three-phase load in a three-phase system | |
| JP2003536353A (en) | Arc fault detection circuit breaker system | |
| US10944252B2 (en) | Surge protection device | |
| US8599522B2 (en) | Circuit interrupter with improved surge suppression | |
| CN202218000U (en) | Improved surge protection device | |
| JP5188853B2 (en) | SPD separation device | |
| CN106451335B (en) | SPD back-up protection devices based on electromagnetic differential | |
| JP5295635B2 (en) | Surge protection device | |
| CN206293872U (en) | A kind of SPD back-up protection devices based on electromagnetic differential | |
| JP5258633B2 (en) | AA circuit breaker with neutral wire phase loss protection | |
| CN106057555B (en) | Breaker with safety switch component | |
| CN201887437U (en) | Two-point grounding protective device for iron core of resistance type transformer | |
| KR101074663B1 (en) | Two-way surge protective device | |
| CN208522450U (en) | Ground protection circuit and motor power supply system | |
| CN109217238B (en) | Protection circuit and electronic equipment | |
| JP5042895B2 (en) | SPD separation device | |
| EP1734632B1 (en) | Safety device for a circuit breaker | |
| CN215646148U (en) | Back-up protector of surge protector and surge protection system | |
| CN209233459U (en) | A kind of Current Transformer Secondary over-voltage protector | |
| Liu et al. | Application of auto-reclosing residual current device in lightning protection for communications power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |