CN2242535Y - Excess voltage type lightning arrestor - Google Patents
Excess voltage type lightning arrestor Download PDFInfo
- Publication number
- CN2242535Y CN2242535Y CN 95236932 CN95236932U CN2242535Y CN 2242535 Y CN2242535 Y CN 2242535Y CN 95236932 CN95236932 CN 95236932 CN 95236932 U CN95236932 U CN 95236932U CN 2242535 Y CN2242535 Y CN 2242535Y
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- CN
- China
- Prior art keywords
- winding
- cable
- amplifier
- isolated form
- transformer
- 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
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an excess-voltage type lightning-proof protector, which is characterized in that the front section and the back section of a CATV cable are isolated with high degree of insulation by a lightning-proof isolated type transformer 9, and an electric supply cable and an amplifier are isolated with high degree of insulation by lightning-proof isolated type transformers 7, 8. The utility model can effectively prevent thunder and lightning from getting into the amplifier, but ac supply current and a television signal can smoothly pass through the amplifier to be amplified to protect the cable and the amplifier.
Description
The utility model relates to the anti-lightening protector of cable of cable TV power supply type amplifier and cable thereof.
At present, the backbone of CATV transmission system extensively adopts cable power supply type amplifier, and the cable of whole system all is connected.Like this, a place is subjected to thunder, and then the whole piece circuit all has thunder and lightning, and the place of not being struck by lightning also is affected, and causes the large-area amplifier that burns, damage in large area, aging cable, even the serious consequence that also is damaged of headend equipment.
The purpose of this utility model provides a kind of between leading portion cable and the back segment cable; high-insulation isolation mutually between cable and the amplifier; thunder and lightning can not be passed through; but Alternating Current Power Supply electric current and TV signal can be passed through smoothly and amplify, effectively the overcurrent type anti-lightening protector of guard amplifier and cable.
Technical solution of the present utility model is that the overcurrent type anti-lightening protector has a box; particularly the utility model is by the Industrial Frequency Transformer that can insulate the isolation lightning protection but can constitute the Alternating Current Power Supply path leading portion cable and back segment cable to be carried out isolated power supply to be connected in the box; here the transformer of indication is an industrial frequency AC isolated form transformer, and three winding T are arranged
1, T
1', T
1＂, winding T
1A contact link to each other with the heart yearn of leading portion cable, another contact links to each other with the rubber-insulated wire of leading portion cable, is connected with the high frequency filter L of restricted passage TV signal on these two circuits
1C
1And be used to receive the piezo-resistance R of the lightning overvoltage of responding between the cable core skin
1Equally, winding T
1The contact of ＂ links to each other with the heart yearn of back segment cable, and another contact links to each other with the rubber-insulated wire of back segment cable, is connected with high frequency filter L on these two lines
3C
3And R
3And winding T
1' a contact link to each other with the heart yearn of the joint that connects amplifier, another contact links to each other with the rubber-insulated wire of the joint that connects amplifier, is connected with high frequency filter L on this two line
2C
2And piezo-resistance R
2Have an isolated form transformer that leading portion cable and the joint that connects amplifier are carried out isolation instructing signal and be connected, the isolated form transformer of indication is the high-frequency isolation type transformer here, and winding T is arranged
2, T
2', winding T
2A joint pass through capacitor C
4Link to each other with the leading portion cable core, another joint links to each other winding T with leading portion cable rubber-insulated wire
2' a contact pass through capacitor C
5Link to each other with the heart yearn that connects the amplifier joint, another contact links to each other with the rubber-insulated wire that connects the amplifier joint.Have an isolated form transformer that amplifier out splice going splice and back segment cable are carried out isolation instructing signal and be connected, the isolated form transformer of indication is the high-frequency isolation type transformer here, and winding T is arranged
3, T
3', winding T
3There is a contact to pass through capacitor C
7Link to each other with the heart yearn of back segment cable, another contact links to each other with the rubber-insulated wire of back segment cable, winding T
3' a contact pass through capacitor C
6Link to each other with the heart yearn of amplifier out splice going splice, another contact links to each other with the rubber-insulated wire of amplifier out splice going splice.
Operation principle of the present utility model is such, and the isolated form transformer between the front and rear sections cable has three winding T
1, T
1', T
1＂ reaches between these three windings and isolates to such an extent that open very much mutually between winding and the iron core, becomes high-insulation and isolates lightning protection, works as T
1On have thunderstorm hour just can not scurry T
1＂ and T
1' on, in like manner, T
1Thunderstorm hour is arranged on the ＂, also can not scurry T
1And T
1' on.Leading portion cable and connecing between the joint of amplifier, and the back segment cable is identical high frequency lightning protection isolated form transformer with isolated form transformer between the amplifier out splice going splice, they have two winding T respectively
2, T
2' and T
3, T
3', and be separated by to such an extent that open very much between winding and the winding, and become high-insulation and isolate lightning protection, work as T
2On thunderstorm hour is arranged, just can not scurry T
2' on, in like manner, T
3On thunderstorm hour is arranged, also can not scurry T
3' on.L
1C
1, L
2C
2, L
3C
3Be three identical high frequency filters, it can not pass through TV signal, but can pass through supply current.C
4, C
5, C
6, C
7Be four identical low capacity electric capacity, it can only pass through TV signal, and can not pass through supply current.Therefore, supply current and TV signal that the leading portion cable comes then are divided into two paths on the leading portion cable, and one is the Alternating Current Power Supply path, and another is the TV signal path.The Alternating Current Power Supply electric current from the leading portion cable through L
1Be input to T
1After, divide two-way output, the one road from T
1' through L
2Behind the joint that connects amplifier, supply with amplifier current.Another road is from T
1＂ is through L
3Output current is to the back segment cable.From as can be known above-mentioned, supply current can waltz through the isolated form transformer to back segment cable and amplifier from the leading portion cable, TV signal then waltzs through high frequency lightning protection isolated form transformer to the joint that connects amplifier from the leading portion cable, allow amplifier amplify, and waltz through high frequency lightning protection isolated form transformer to the back segment cable from connecing the amplifier out splice going splice.When if the leading portion cable has thunder and lightning on industrial frequency AC isolated form transformer and high frequency lightning protection isolated form transformer, then can not be from T
1Scurry T
1' and T
1On the ＂, also can not be from T
2Scurry T
2' on, thereby prevented that thunder and lightning from scurrying on back segment cable and the amplifier, infringement back segment cable and amplifier.In like manner, if thunder and lightning is arranged when the back segment cable passes on industrial frequency AC isolated form transformer and the high frequency lightning protection isolated form transformer, also can not be from T
1＂ scurries T
1And T
1' on, can not be from T
3Scurry T
3' on, thereby prevented that thunder and lightning from scurrying on leading portion cable and the amplifier, infringement leading portion cable and amplifier.Three of industrial frequency AC isolated form transformer winding T in addition
1, T
1', T
1On the ＂, be parallel with three piezo-resistance R respectively
1, R
2, R
3, be used to absorb the lightning overvoltage of responding between the cable core skin, and the lightning overvoltage of industrial frequency AC isolated form Transformer Winding induction itself, protecting the winding of industrial frequency AC isolated form transformer and the power supply of amplifier not to be burnt out by thunder and lightning induction voltage.
The utility model has the advantages that on the cable TV power supply signal cable; leading portion cable and back segment cable, high-insulation isolation mutually between cable and the amplifier, thunder and lightning can not pass through; but alternating current and TV signal can be smoothly by and amplify, thereby guard amplifier and cable effectively.
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
Fig. 1 structure of the present utility model and circuit diagram.
Fig. 2 position of the present utility model reaches the annexation schematic diagram with amplifier.
Shown in Fig. 1,2, the utility model has a box 1, the isolated form transformer 9 of isolating lightning protection by insulating but can constitute the Alternating Current Power Supply path in box 1 is connected leading portion cable 3 with back segment cable 5, isolated form transformer 9 is industrial frequency AC isolated form transformers, and three winding T are arranged
1, T
1', T
1＂, winding T
1A contact link to each other with the heart yearn of leading portion cable 3, another contact links to each other with the rubber-insulated wire of leading portion cable 3, has the high frequency filter L of restricted passage TV signal on these two circuits
1C
1And be used to receive the piezo-resistance R of the lightning overvoltage of responding between the cable core skin
1Equally, winding T
1The contact of ＂ links to each other with the heart yearn of back segment cable 5, and another contact links to each other with the rubber-insulated wire of back segment cable 5, is connected with high frequency filter L on these two lines
3C
3And R
3And winding T
1' a contact link to each other with the heart yearn that connects amplifier joint 4, another contact links to each other with the rubber-insulated wire that connects amplifier 4, is connected with high frequency filter L on this two line
2C
2And piezo-resistance R
2Isolated form transformer 7 with leading portion cable 3 with connect amplifier joint 4 and be connected, isolated form transformer 7 is high-frequency isolation type transformers, and winding T is arranged
2, T
2', winding T
2A joint pass through capacitor C
4Link to each other with leading portion cable 3 heart yearns, another joint links to each other winding T with leading portion cable 3 rubber-insulated wires
2' a contact pass through capacitor C
5With connect amplifier joint 4 heart yearns and link to each other, another contact with connect amplifier joint 4 rubber-insulated wires and link to each other.Isolated form transformer 8 joins amplifier out splice going splice and back segment cable 5, and isolated form transformer 8 is high-frequency isolation type transformers, and winding T is arranged
3, T
3', winding T
3There is a contact to pass through capacitor C
7Link to each other with the heart yearn of back segment cable 5, another contact links to each other with the rubber-insulated wire of back segment cable 5, winding T
3' a contact pass through capacitor C
6Link to each other with the heart yearn of amplifier out splice going splice 6, another contact links to each other with the rubber-insulated wire of amplifier out splice going splice 6.
Claims (3)
1, overcurrent type anti-lightening protector comprises box (1) composition, it is characterized in that the Industrial Frequency Transformer (9) of isolating lightning protection by insulating carries out the isolated form power supply with leading portion cable (3) and back segment cable (5) and is connected, and isolated form transformer (9) has three winding T
1, T
1', T
1＂, winding T
1A contact another contact that links to each other with leading portion cable (3) heart yearn link to each other with the rubber-insulated wire of leading portion cable (3), on these two circuits, also be connected with the high frequency filter L of restricted passage TV signal
1C
1And be used to absorb the piezo-resistance R of the lightning overvoltage of responding between the cable core skin
1, same, winding T
1" a contact link to each other with the heart yearn of back segment cable (5), another contact links to each other with the rubber-insulated wire of back segment cable (5), is connected with high frequency filter L on these two lines
3C
3And R
3, and winding T
1' a contact link to each other with the heart yearn of the joint that connects amplifier (4), another contact links to each other with the rubber-insulated wire of the joint that connects amplifier (4), is connected with high frequency filter L on this two line
2C
2And piezo-resistance R
2, isolated form transformer (7) carries out isolated form with leading portion cable (3) with the joint that connects amplifier (4) and is connected, and isolated form transformer (7) is a high frequency lightning protection isolated form transformer, and winding T is arranged
2, T
2', winding T
2A joint pass through capacitor C
4Link to each other with leading portion cable (3) heart yearn, another joint links to each other winding T with leading portion cable (3) rubber-insulated wire
2' a contact pass through capacitor C
5Link to each other with the joint that connects amplifier (4) heart yearn, another contact links to each other with the joint that connects amplifier (4) rubber-insulated wire, isolated form transformer (8) carries out isolated form with the amplifier out splice going splice with back segment cable (5) and is connected, and isolated form transformer (8) is a high frequency lightning protection isolated form transformer, and winding T is arranged
3, T
3', winding T
3There is a contact to pass through capacitor C
7Link to each other with the heart yearn of back segment cable (5), another contact links to each other with the rubber-insulated wire of back segment cable (5), winding T
3' a contact pass through capacitor C
6Link to each other with the heart yearn of amplifier out splice going splice (6), another contact links to each other with the rubber-insulated wire of amplifier out splice going splice (6).
2, overcurrent type anti-lightening protector according to claim 1 is characterized in that insulation isolates the winding T of lightning protection Industrial Frequency Transformer (9)
1, T
1', T
1Reach winding T between the ＂
1, T
1', T
1Open very much apart from one another by getting between ＂ and the iron core, form high-insulation and isolate.
3, overcurrent type anti-lightening protector according to claim 1 is characterized in that insulation isolates the winding T of lightning protection high frequency transformer (7), (8)
2, T
2' between, winding T
3, T
3' between, get at interval and open very much, form high-insulation and isolate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95236932 CN2242535Y (en) | 1995-06-01 | 1995-06-01 | Excess voltage type lightning arrestor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95236932 CN2242535Y (en) | 1995-06-01 | 1995-06-01 | Excess voltage type lightning arrestor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2242535Y true CN2242535Y (en) | 1996-12-11 |
Family
ID=33879794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95236932 Expired - Fee Related CN2242535Y (en) | 1995-06-01 | 1995-06-01 | Excess voltage type lightning arrestor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2242535Y (en) |
-
1995
- 1995-06-01 CN CN 95236932 patent/CN2242535Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |