CN2667651Y - Compound overvoltage protector - Google Patents
Compound overvoltage protector Download PDFInfo
- Publication number
- CN2667651Y CN2667651Y CN 200320109828 CN200320109828U CN2667651Y CN 2667651 Y CN2667651 Y CN 2667651Y CN 200320109828 CN200320109828 CN 200320109828 CN 200320109828 U CN200320109828 U CN 200320109828U CN 2667651 Y CN2667651 Y CN 2667651Y
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- CN
- China
- Prior art keywords
- protective device
- unit
- damping unit
- series
- control damping
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- Expired - Lifetime
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Abstract
The utility model relates to a compound overvoltage protector, wherein, an interphase protective device consists of three protective poles which have same structure, and are connected to be a stellated shape, and a phase-ground protective device consists of a protective pole; The protective pole comprises an absorbing unit and a control damping unit which are connected in series; the control damping unit of the protective pole of the interphase protective device is arranged close to the wire fence end, the control damping unit of the protective pole of the phase-ground protective device is arranged close to the ground end; One ends of the three arrester units which have the same structure are respectively connected with the connections of the absorbing unit and the control damping unit which are connected in series in the interphase protective device, while the other ends are respectively connected with the connections of the absorbing unit and the control damping unit which are connected in series in the phase-ground protective device; The arrester unit comprises a voltage dependent resistor and a discharge gap which are connected in series; the absorbing unit comprises a capacitance, the control damping unit comprises a control switch and a resistance. The utility model solves the technical problems that the background technique has the disadvantages of single function, high cost, and different in fixing. The utility model has double functions of protecting the atmosphere overvoltage and operating the overvoltage.
Description
Technical field
The utility model relates to a kind of overvoltage protection of electric equipment; be used to protect and absorb overvoltage and the atmosphere lightning overvoltage that 3-35KV vacuum circuit-breaker or vacuum contactor produce when cutting off inductive load such as motor, reactor and transformer, to guarantee the safe and reliable operation of electric equipment.Be specifically related to a kind of combined type overvoltage protection device.
Background technology
Theory analysis and facts have proved; rc absorber is to protection and absorb the 6-35KV vacuum circuit-breaker or overvoltage that vacuum contactor produces when cutting off inductive load such as motor, reactor and transformer has positive effect, but limited to the protective effect of atmospheric over-voltage.Traditional lightning arrester is then opposite, and is effective to the protection atmospheric over-voltage, and the switching overvoltage defectiveness that protection vacuum circuit-breaker or vacuum contactor are produced when cutting off inductive load such as motor, reactor and transformer.As if with both uses in parallel, replenish mutually, not only the cost height takes up space greatly, installs also difficult.
The utility model content
The utility model has solved the background technology function singleness, and the cost height is installed the difficult technologies problem.
Technical solution of the present utility model is:
A kind of combined type overvoltage protection device comprises alternate protective device and protective device mutually, and its special character is: it comprises that also three structures form identical lightning arrester unit; Described alternate protective device is formed the protection utmost point identical, that connect to star by three structures and is constituted, and described phase ground protective device is made of a protection utmost point; The described protection utmost point comprises absorptive unit and the control damping unit that is in series; The control damping unit of the protection utmost point of described alternate protective device is positioned at nearly electrical network end, and the control damping unit of the protection utmost point of described phase ground protective device is positioned at the near end; Described three structures are formed identical lightning arrester unit, the one end is connected to alternate protective device absorptive unit that is in series and the contact of controlling damping unit respectively, and the other end is connected to protective device absorptive unit that is in series and the contact of controlling damping unit mutually respectively; Described lightning arrester unit comprises piezo-resistance and the discharging gap that is in series; Described absorptive unit comprises electric capacity, and described control damping unit comprises control switch and resistance.
The control switch of above-mentioned formation control damping unit and resistance are advisable to adopt piezo-resistance.
The control switch and the resistance of above-mentioned formation control damping unit also can adopt controllable silicon.
But above-mentioned electric capacity is advisable with the dry-type capacitor that adopts self-healing.
Above-mentioned absorptive unit can comprise the grading resistor that is in parallel with electric capacity.
The protection utmost point of above-mentioned phase ground protective device, the contact place of its absorptive unit that is in series and control damping unit can be connected to counter.
The utlity model has following advantage:
Energy-conservation; Be not afraid of the invasion of high order harmonic component in the electrical network, can not provide additional earthing capacitance current to electrical network; Help eliminating resonance overvoltage; Can alternate, the switching overvoltage relatively of protection; Can in time, automatically drop into or withdraw from electrical network; Having protection atmospheric over-voltage and switching overvoltage dual-use function, is the combination of autocontrol rc absorber and four pole type lightning arrester; Take up an area of for a short time, cost is low, installs, easy to use.Has function with the compound overvoltage protection device of the contactless automatic shutter control switching of voltage height.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, the utility model mainly is made of alternate protective device, phase ground protective device and lightning arrester unit.Alternate protective device is formed the protection utmost point identical, that connect to star by three structures and is constituted, and protective device is made of a protection utmost point mutually.The protection utmost point is made of absorptive unit that is in series and control damping unit.Three protection utmost points of alternate protective device, its absorptive unit can adopt capacitor C1, C2, C3 respectively, and the control switch of its control damping unit and resistor can adopt respectively and have switch, piezo-resistance R1, the R2 of resistance effect, R3 concurrently.The protection utmost point of phase ground protective device, its absorptive unit can adopt capacitor C4, and control switch and resistor of its control damping unit can adopt the piezo-resistance R4 that has switch, resistance effect concurrently.Three identical lightning arrester unit of structures composition, the one end is connected to alternate protective device absorptive unit that is in series and the contact of controlling damping unit respectively, and the other end is connected to protective device absorptive unit that is in series and the contact of controlling damping unit mutually respectively.The lightning arrester unit comprises piezo-resistance and the discharging gap that is in series; Piezo-resistance can adopt R5, R6, R7 respectively, and discharging gap can adopt G1, G2, G3 respectively.The control switch and the resistor of control damping unit also can adopt the controllable silicon that has switch, resistance effect concurrently.Capacitor C1 of the present utility model, C2, C3, C4 can distinguish grading resistor r1 in parallel, r2, r3, r4.The protection utmost point of phase ground protective device, its absorptive unit can adopt capacitor C4, mutually the protection utmost point of protective device; capacitor C4 that it is in series and the contact place of piezo-resistance R4 can meet counter J; it is the register of discharging action, can adopt liquid crystal display, partial installation.Piezo-resistance R1, R2, R3, R4, automatic cut-off when voltage is low, automatic conducting when voltage is high.In utility model, play valve control and resistor automatically.Capacitor C1, C2, C3, C4 are good with the dry-type capacitor that employing possesses self-healing function.Capacitor C1, C2, C3, C4 specifically can be respectively be in series by one, two or more capacitor cells, the general dozens of capacitor cell that adopts is in series, each capacitor cell grading resistor in parallel respectively, each capacitor cell is all being good with epoxy sealing, a plurality of strings are one group, and the epoxy sealing is one deck.Cut off layer by layer, be encapsulated in respectively between each utmost point of four pole type can be fire-retardant mould in the shell separate.The utility model piezo-resistance can adopt Zinc-oxide piezoresistor, and itself and electric capacity are all isolated installation, adopts polypropylene metallization plated film between capacitor pole, has self-healing function.But adopt ABS or PBT fire-resistant engineering plastics shell, three phase separation, and be assembled in a base.
Claims (6)
1 one kinds of combined type overvoltage protection devices comprise alternate protective device and protective device mutually, it is characterized in that: it comprises that also three structures form identical lightning arrester unit; Described alternate protective device is formed the protection utmost point identical, that connect to star by three structures and is constituted, and described phase ground protective device is made of a protection utmost point; The described protection utmost point comprises absorptive unit and the control damping unit that is in series; The control damping unit of the protection utmost point of described alternate protective device is positioned at nearly electrical network end, and the control damping unit of the protection utmost point of described phase ground protective device is positioned at the near end; Described three structures are formed identical lightning arrester unit, the one end is connected to alternate protective device absorptive unit that is in series and the contact of controlling damping unit respectively, and the other end is connected to protective device absorptive unit that is in series and the contact of controlling damping unit mutually respectively; Described lightning arrester unit comprises piezo-resistance and the discharging gap that is in series; Described absorptive unit comprises electric capacity, and described control damping unit comprises control switch and resistance.
2 combined type overvoltage protection devices as claimed in claim 1 is characterized in that: the control switch and the resistance of described formation control damping unit are made of piezo-resistance.
3 combined type overvoltage protection devices as claimed in claim 1 is characterized in that: the control switch and the resistance of described formation control damping unit are made of controllable silicon.
4 combined type overvoltage protection devices as claimed in claim 1 is characterized in that: but described electric capacity is the dry-type capacitor of self-healing.
5 as claim 1 or 2 or 3 or 4 described combined type overvoltage protection devices, and it is characterized in that: described absorptive unit comprises the grading resistor that is in parallel with electric capacity.
6 combined type overvoltage protection devices as claimed in claim 5 is characterized in that: the protection utmost point of described phase ground protective device, the contact place of its absorptive unit that is in series and control damping unit is connected to counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109828 CN2667651Y (en) | 2003-11-04 | 2003-11-04 | Compound overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109828 CN2667651Y (en) | 2003-11-04 | 2003-11-04 | Compound overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667651Y true CN2667651Y (en) | 2004-12-29 |
Family
ID=34343410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320109828 Expired - Lifetime CN2667651Y (en) | 2003-11-04 | 2003-11-04 | Compound overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667651Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573848B (en) * | 2007-01-04 | 2012-04-18 | 德恩及索恩两合股份有限公司 | Overvoltage protection device for use in a direct current network |
| CN102738774A (en) * | 2012-06-06 | 2012-10-17 | 河南省电力公司信阳供电公司 | Overvoltage protection capacitor device |
-
2003
- 2003-11-04 CN CN 200320109828 patent/CN2667651Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101573848B (en) * | 2007-01-04 | 2012-04-18 | 德恩及索恩两合股份有限公司 | Overvoltage protection device for use in a direct current network |
| CN102738774A (en) * | 2012-06-06 | 2012-10-17 | 河南省电力公司信阳供电公司 | Overvoltage protection capacitor device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131104 Granted publication date: 20041229 |