CN202856338U - Overheat, over-current and over-voltage lightning protector and lightning protection circuit - Google Patents
Overheat, over-current and over-voltage lightning protector and lightning protection circuit Download PDFInfo
- Publication number
- CN202856338U CN202856338U CN 201220548680 CN201220548680U CN202856338U CN 202856338 U CN202856338 U CN 202856338U CN 201220548680 CN201220548680 CN 201220548680 CN 201220548680 U CN201220548680 U CN 201220548680U CN 202856338 U CN202856338 U CN 202856338U
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- China
- Prior art keywords
- lightning protection
- lightning
- thermal cutoffs
- protector
- varistor mov
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- Expired - Lifetime
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Abstract
The utility model discloses an overheat, over-current and over-voltage lightning protector, which comprises a flame retardant plastic casing and a lightning protection unit packaged in the flame retardant plastic casing. The lightning protection unit further comprises a first temperature fuse FU, a varistor MOV, and a second temperature fuse FU', wherein the varistor MOV is connected with the first temperature fuse FU in series, and the second temperature fuse FU' is arranged beside the varistor MOV and used for heat monitoring. The utility model further discloses a lightning protection circuit. The lightning protector provided by the utility model is simple in structure, and the preparation method is simple and easy. Application of the lighting protector to the lightning protection circuit not only solves the problem that a lightning protection air switch and the lightning protector are difficult to match, but also enables the lightning protector not to be in conflict with standard specifications in practical application. A lightning protection alarm unit connected with the second temperature fuse alarms initiatively when the lightning protector is abnormal, thereby realizing intelligent protection, monitoring alarm and active maintenance of lightning.
Description
Technical field
The utility model has related to a kind of lightning protection device, has related in particular to a kind of overheated, overcurrent, overvoltage lightning protection device.
The utility model also related to simultaneously have overheated, overcurrent, the lightning protection circuit of overvoltage anti-lightening protector.
Background technology
Existing power-supply system lightening arresting method is to do one, two, three lightning protection, and every grade mounting distance requires greater than 10 meters, but the single or difficult coupling that realizes one, two, three of machine room (such as mobile base station, machine room) independently.Moreover installation code requires and need to lightning protection air switch be installed every grade of lightning protection device prime, and current value must not be greater than the current value of supply line's major loop air switch; Purpose is when preventing lightning protection device (lightning protection box) failed shorted, causes the tripping operation of major loop air switch, causes the main equipment outage, affects system's operation.
But because system arranges supporting division of labor difference, cause lightning protection device, lightning protection device circuit breaker and power supply line-breaker to be difficult to cooperate, thus the hidden danger of breaking down:
1, lightning protection air switch and lightning protection device are difficult to coupling: the back-up breaker of lightning protection device must satisfy the current capacity of SPD, that is to say that circuit breaker can not have influence on the normal relieving capacity of lightning protection device, if satisfy the discharging current condition of lightning protection device, the type selecting of the about 200A of current value of lightning protection air switch, but just greater than the current value of major loop air switch.
2, conflicting of practical application and standard criterion: standard criterion requires the lightning protection air switch can not be greater than the major loop air switch: the circuit breaker electric flow valuve by standard SPD prime must not be greater than the current value of power supply major loop circuit breaker, if the current value greater than the major loop circuit breaker, the lightning protection device circuit breaker just can not move when the SPD failed shorted, cause the circuit breaker of power supply major loop to open circuit, the load outage; If the current value (the communication power supply circuit breaker according to present mobile base station is configured to 60A-100A) less than the major loop circuit breaker; be 100KA configuration according to B level SPD; even if the SPD prime circuit breaker of 100A; when the air switch of 100KA SPD prime series connection 100A; surpass 60KA/30KV (8/20uS) test lightning current; can cause the tripping operation of lightning protection device air switch; lightning protection box (device) has lost defencive function; if direct damage equipment when occuring to continue thunderbolt; the result causes lightning protection device not bad; the phenomenon that equipment but damages has lost the function of lightning protection.
The utility model content
The technical problems to be solved in the utility model is in order to overcome technological deficiency recited above; a kind of overheated, overcurrent, overvoltage anti-lightening protector are provided; the preparation method of this anti-lightening protector also is provided, the lightning protection circuit with this anti-lightening protector also is provided simultaneously.
In order to solve technical problem recited above, the utility model is taked following technical scheme:
A kind of overheated, overcurrent, overvoltage anti-lightening protector; comprise the flame retardant plastics housing; be encapsulated in the lightning protection unit in the flame retardant plastics housing, the second Thermal Cutoffs FU ' that is used for the heat monitoring that described lightning protection unit further includes the first Thermal Cutoffs FU, the varistor MOV that connects with the first Thermal Cutoffs FU and is arranged at varistor MOV side.
The discharge capacity of described the first Thermal Cutoffs FU is 40KA, and the discharge capacity of described varistor MOV is identical with the first Thermal Cutoffs FU.
Spacing between described the second Thermal Cutoffs FU ' and the varistor MOV is 0.
The temperature coefficient of described the second Thermal Cutoffs FU ' is less than the temperature coefficient of the first Thermal Cutoffs FU.
A kind of preparation method of aforesaid anti-lightening protector may further comprise the steps:
The first Thermal Cutoffs FU is connected with varistor MOV;
Place the second Thermal Cutoffs FU ' at the varistor side;
Adopt the applying method for packing that the first Thermal Cutoffs FU, varistor MOV and the second Thermal Cutoffs FU ' are encapsulated in the flame retardant plastics housing, make anti-lightening protector.
Adopt the applying method for packing and by epoxy resin the first Thermal Cutoffs FU, varistor MOV and the second Thermal Cutoffs FU ' are potted in the flame retardant plastics housing, make anti-lightening protector.
A kind of lightning protection circuit with aforesaid anti-lightening protector; in electric power loop, has the anti-lightening protector that is arranged in parallel; the power line L line of the first end connecting circuit of the first Thermal Cutoffs FU; the second end of the first Thermal Cutoffs FU connects the varistor MOV first end of series connection, the second termination power line N line of varistor MOV.
Described anti-lightening protector connects the lightning monitoring alarm unit by instrument transformer.
Described the second Thermal Cutoffs FU ' that is used for the heat monitoring that is positioned at varistor MOV side connects the lightning monitoring alarm unit.
Also further include the thunder and lightning frequency impedance control unit that is connected on the power line and be arranged in parallel first order lightning protection unit and lightning protection unit, the second level at thunder and lightning frequency impedance control unit front and back ends at electric power loop; described first order lightning protection unit further includes at least 3 anti-lightening protectors that are arranged in parallel, and the lightning protection unit setting of the described second level has 1 anti-lightening protector at least.
The anti-lightening protector that the utility model provides is simple in structure; the preparation method is simple and easy; connect with varistor by being encapsulated in the first Thermal Cutoffs; and set up the second Thermal Cutoffs for heat monitoring at the varistor side, and the temperature coefficient of the second Thermal Cutoffs is less than the temperature coefficient of the first Thermal Cutoffs.Anti-lightening protector is applied in the lightning protection circuit; both solved the problem that lightning protection air switch and lightning protection device are difficult to mate; also so that lightning protection device can not conflict with standard criterion in actual applications mutually, effectively improve the lightning protection ability, avoided the generation of disaster hidden-trouble.The lightning protection monitoring, alarming that links to each other with the second Thermal Cutoffs unit is provided simultaneously, and occur when unusual can initiative alarming when anti-lightening protector, has realized the intelligent protection of thunder and lightning, monitoring alarm and active maintenance.
Description of drawings
Fig. 1 is the first structure chart of anti-lightening protector of the present utility model.
Fig. 2 is the second structure chart of anti-lightening protector of the present utility model.
Fig. 3 is the circuit diagram of the example one of lightning protection circuit of the present utility model.
Fig. 4 is the circuit diagram of the example two of lightning protection circuit of the present utility model.
Fig. 5 is the circuit diagram of the example three of lightning protection circuit of the present utility model.
Among the figure, 1. lightning monitoring alarm unit, 2. instrument transformer, 3. first order lightning protection unit, 4. second level lightning protection unit, 5. flame retardant plastics housing.
Embodiment
See also Fig. 1; as shown in the figure; a kind of overheated, overcurrent, overvoltage anti-lightening protector; comprise flame retardant plastics housing 5; be encapsulated in the lightning protection unit in the flame retardant plastics housing 5, wherein lightning protection unit hot the second Thermal Cutoffs FU ' that monitors that is used for that further includes the first Thermal Cutoffs FU, the varistor MOV that connect with the first Thermal Cutoffs FU and be arranged at varistor MOV side.The discharge capacity of the first Thermal Cutoffs FU is 40KA, and the discharge capacity of varistor MOV is identical with the first Thermal Cutoffs FU.The temperature coefficient of the second Thermal Cutoffs FU ' is less than the temperature coefficient of the first Thermal Cutoffs FU.
See also Fig. 2; as shown in the figure; a kind of overheated, overcurrent, overvoltage anti-lightening protector; comprise flame retardant plastics housing 5; be encapsulated in the lightning protection unit in the flame retardant plastics housing 5; lightning protection unit the second Thermal Cutoffs FU ' that is used for the heat monitoring that further includes the first Thermal Cutoffs FU, the varistor MOV that connects with the first Thermal Cutoffs FU and be arranged at varistor MOV side wherein, the spacing between the second Thermal Cutoffs FU ' and the varistor MOV is 0.The discharge capacity of the first Thermal Cutoffs FU is 40KA, and the discharge capacity of varistor MOV is identical with the first Thermal Cutoffs FU.The temperature coefficient of the second Thermal Cutoffs FU ' is less than the temperature coefficient of the first Thermal Cutoffs FU.
A kind of preparation method of anti-lightening protector may further comprise the steps: the first Thermal Cutoffs FU is connected with varistor MOV; Place the second Thermal Cutoffs FU ' at the varistor side; Adopt the applying method for packing that the first Thermal Cutoffs FU, varistor MOV and the second Thermal Cutoffs FU ' are encapsulated in the flame retardant plastics housing, make anti-lightening protector.
Further, adopt the applying method for packing and by epoxy resin the first Thermal Cutoffs FU, varistor MOV and the second Thermal Cutoffs FU ' are potted in the flame retardant plastics housing, make anti-lightening protector.
See also Fig. 3; as shown in the figure; a kind of lightning protection circuit with anti-lightening protector; in electric power loop, has the anti-lightening protector that is arranged in parallel; the power line L line of the first end connecting circuit of the first Thermal Cutoffs FU; the second end of the first Thermal Cutoffs FU connects the varistor MOV first end of series connection, the second termination power line N line of varistor MOV.
See also Fig. 4; as shown in the figure; lightning protection circuit with anti-lightening protector; in electric power loop, has the anti-lightening protector that is arranged in parallel; the power line L line of the first end connecting circuit of the first Thermal Cutoffs FU; the second end of the first Thermal Cutoffs FU connects the varistor MOV first end of series connection, the second termination power line N line of varistor MOV.Anti-lightening protector connects the lightning monitoring alarm unit by instrument transformer 2; the the second Thermal Cutoffs FU ' that is used for the heat monitoring that is positioned at varistor MOV side connects the lightning monitoring alarm unit, and the lightning monitoring alarm unit receives the normally closed signal that the second Thermal Cutoffs FU ' sends.
See also Fig. 5; as shown in the figure; the first order lightning protection unit 3 and the lightning protection unit, the second level 4 that in electric power loop, also include the thunder and lightning frequency impedance control unit (ALFB) that is connected on the power line and be arranged in parallel thunder and lightning frequency impedance control unit front and back ends; first order lightning protection unit further includes at least 3 anti-lightening protectors that are arranged in parallel, and lightning protection unit, the second level is provided with at least 1 anti-lightening protector.
Anti-lightening protector of the present utility model is connected in parallel in the electric power loop; overvoltage in the circuit is carried out pressure limiting between by-pass shunt and line; and the normally closed dry contact, ceraunograph counting unit of output anti-lightening protector are to the alarm unit of warning device; the built-in coordinated type warning circuit of this alarm unit; can carry out Real Time Monitoring to the operating state of anti-lightening protector, and by the dry contact remote monitoring.
Claims (8)
1. one kind overheated, overcurrent, overvoltage anti-lightening protector; comprise the flame retardant plastics housing; be encapsulated in the lightning protection unit in the flame retardant plastics housing, it is characterized in that: the second Thermal Cutoffs FU ' that is used for the heat monitoring that described lightning protection unit further includes the first Thermal Cutoffs FU, the varistor MOV that connects with the first Thermal Cutoffs FU and is arranged at varistor MOV side.
2. anti-lightening protector as claimed in claim 1, it is characterized in that: the discharge capacity of described the first Thermal Cutoffs FU is 40KA, the discharge capacity of described varistor MOV is identical with the first Thermal Cutoffs FU.
3. anti-lightening protector as claimed in claim 1 or 2, it is characterized in that: the spacing between described the second Thermal Cutoffs FU ' and the varistor MOV is 0.
4. anti-lightening protector as claimed in claim 1 or 2, it is characterized in that: the temperature coefficient of described the second Thermal Cutoffs FU ' is less than the temperature coefficient of the first Thermal Cutoffs FU.
5. lightning protection circuit that has such as the arbitrary described anti-lightening protector of claim 1 to 4; it is characterized in that: in electric power loop, have the anti-lightening protector that is arranged in parallel; the power line L line of the first end connecting circuit of the first Thermal Cutoffs FU; the second end of the first Thermal Cutoffs FU connects the varistor MOV first end of series connection, the second termination power line N line of varistor MOV.
6. lightning protection circuit as claimed in claim 5 is characterized in that: described anti-lightening protector connects the lightning monitoring alarm unit by instrument transformer.
7. lightning protection circuit as claimed in claim 5 is characterized in that: described the second Thermal Cutoffs FU ' connection lightning monitoring alarm unit that is used for the heat monitoring that is positioned at varistor MOV side.
8. lightning protection circuit as claimed in claim 5; it is characterized in that: also further include the thunder and lightning frequency impedance control unit that is connected on the power line and be arranged in parallel first order lightning protection unit and lightning protection unit, the second level at thunder and lightning frequency impedance control unit front and back ends at electric power loop; described first order lightning protection unit further includes at least 3 anti-lightening protectors that are arranged in parallel, and the lightning protection unit setting of the described second level has 1 anti-lightening protector at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548680 CN202856338U (en) | 2012-10-24 | 2012-10-24 | Overheat, over-current and over-voltage lightning protector and lightning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220548680 CN202856338U (en) | 2012-10-24 | 2012-10-24 | Overheat, over-current and over-voltage lightning protector and lightning protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856338U true CN202856338U (en) | 2013-04-03 |
Family
ID=47987496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220548680 Expired - Lifetime CN202856338U (en) | 2012-10-24 | 2012-10-24 | Overheat, over-current and over-voltage lightning protector and lightning protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856338U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904238A (en) * | 2012-10-24 | 2013-01-30 | 深圳市雷博斯科技有限公司 | Overheat, overcurrent and overvoltage lightning protector |
| CN106451344A (en) * | 2015-08-07 | 2017-02-22 | 菲尼克斯电气公司 | Protective circuit assembly |
-
2012
- 2012-10-24 CN CN 201220548680 patent/CN202856338U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904238A (en) * | 2012-10-24 | 2013-01-30 | 深圳市雷博斯科技有限公司 | Overheat, overcurrent and overvoltage lightning protector |
| CN106451344A (en) * | 2015-08-07 | 2017-02-22 | 菲尼克斯电气公司 | Protective circuit assembly |
| CN106451344B (en) * | 2015-08-07 | 2019-08-02 | 菲尼克斯电气公司 | A kind of protection circuit device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Overheat, over-current and over-voltage lightning protector and lightning protection circuit Effective date of registration: 20190815 Granted publication date: 20130403 Pledgee: Ganzhou Nankang District Chengfa Group Financial Investment Co.,Ltd. Pledgor: SHENZHEN LEBOS TECHNOLOGY Co.,Ltd. Registration number: Y2019440020006 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |