CN201051666Y - Assembly cable frame security guarantee unit - Google Patents
Assembly cable frame security guarantee unit Download PDFInfo
- Publication number
- CN201051666Y CN201051666Y CNU2007200331565U CN200720033156U CN201051666Y CN 201051666 Y CN201051666 Y CN 201051666Y CN U2007200331565 U CNU2007200331565 U CN U2007200331565U CN 200720033156 U CN200720033156 U CN 200720033156U CN 201051666 Y CN201051666 Y CN 201051666Y
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- CN
- China
- Prior art keywords
- reed
- grounding
- discharge tube
- interior lines
- protection element
- 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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Abstract
The utility model provides a protecting unit of a main distributing frame, relating to a protecting device for exchange equipment in a machinery room. The utility model comprises a base, and a pair of outer line reeds, inner line reeds, and a grounding reed, which are arranged on the base, wherein an electric discharge tube between the two outer line reeds is installed on the base, and a pair of P T C thermo-sensitive resistors are arranged between the outer line reeds and the inner line reeds. The electric discharge tube is connected with a grounding shaft through the grounding reed, each two-stage over-voltage protection element is arranged between the electric discharge tube and each inner line reed, and the two-stage over-voltage protection element is connected with the grounding shaft through the grounding reed. Each inner line reed is respectively connected out of an inner line connection reed which is connected with the P T C thermo-sensitive resistor and the two-stage over-voltage protection element. The utility model can effectively provide strong protection for the exchange equipment in the machinery room, which is convenient for people to respond for abnormal situations and take measures, thereby reducing economic loss and personal injures.
Description
Technical field
The utility model relates to the protective device that is used for overvoltage, overcurrent protection, refers more particularly to a kind of protective device that is used for the machine room switching equipment.
Background technology
Security Unit structure on the safety wire connection row of at present supporting main frame at telephone room is various, and Security Unit is as an important protective device, and the quality of its performance directly affects the safety of whole circuit.The Security Unit of Shi Yonging has only the one-level overvoltage protection in the market; being typically prime is that discharge tube is as overvoltage protection; the centre is that thermistor PTC makes overcurrent protection; though whole circuit has been played the certain protection effect; but its protective value is not satisfactory when multi-thunder area, change in voltage instability; and the Security Unit that uses is welded on various components and parts on one circuit board mostly now; quality requirement to welding is higher; often in use for some time, because of the loose contact cisco unity malfunction.Existing Security Unit can not be real-time the situation to circuit make mensuration so that can not make reflection to fault timely, cause some unnecessary economic loss and personal injurys.
The utility model content
The utility model is at above-mentioned defective, and purpose is to provide a kind of stable performance, protective value is good and the main frame Security Unit of energy on-line measurement.
The technical solution of the utility model is: it comprises pedestal and a pair of outside line reed that is arranged on pedestal; an interior lines reed and a grounding reed; also be provided with the discharge tube that is installed between the two outside line reeds on the pedestal; be installed in a pair of PTC thermistor between outside line reed and the interior lines reed; discharge tube connects grounding shaft by grounding reed; between discharge tube and each interior lines reed, be connected with a secondary overvoltage protection element separately; the secondary overvoltage protection element connects grounding shaft by grounding reed; connect interior lines on each interior lines reed separately and connect reed, interior lines connect reed and connect PCT thermistor and secondary overvoltage protection element.
Described secondary overvoltage protection element is metal oxide varistor MOV.
Discharge tube adopts clamping with being connected of grounding shaft.
The utility model has increased by two metal oxide varistor MOV as the secondary overvoltage protection in the back level; make Security Unit more efficientlyly provide more strong protection to the machine room switching equipment; adopt assembled that each element is connected simultaneously; discharge tube adopts clamping with being connected of grounding shaft, has improved reliability of products.Be connected a pair of measurement that reed constitutes mouthful with interior lines by the interior lines reed in addition, the ruuning situation to circuit that can be real-time is made test, makes us make reflection to abnormal conditions timely and takes measures on customs clearance, and reduces economic loss and personal injury.
Description of drawings
Fig. 1 is a structural representation of the present utility model
1 is pedestal among the figure, and 2 is shell, and 3 is interior lines reed A, 4 grounding reeds, and 5 for interior lines connect reed A, and 6 for interior lines connect reed B, and 7 is discharge tube, and 8 is interior lines reed B, and 9 is grounding shaft, and 10 are outside line reed A, and 11 are outside line reed B.
Fig. 2 is the rearview of Fig. 1
12 is metal oxide varistor MOV among the figure, and 13 is thermistor PTC.
Fig. 3 is circuit theory diagrams of the present utility model
Embodiment
The utility model is mainly used in overcurrent, the overvoltage protection of machine room switching equipment.Shell 2 plays the effect of each components and parts of protection; pedestal 1 is the installation carrier of each element; interior lines reed (A) 3, interior lines reed (B) 8, outside line reed (A) 10, outside line reed (B) 11 and grounding reed 4 are installed on pedestal 1; also be provided with the discharge tube 7 that is installed between the two outside line reeds on the pedestal 1, be installed in two thermistor PTC13 between outside line reed (A) 10 and interior lines reed (A) 3, outside line reed (B) 1 and the interior lines reed (B) 8.Be connected with a metal oxide varistor MOV12 respectively between discharge tube 7 and interior lines reed (A) 3, the interior lines reed (B) 8, discharge tube 7 and two metal oxide varistor MOV12 connect grounding shaft 9 by grounding reed 4, and grounding shaft 9 is fixed on the grounding reed 4.Interior lines connection reeds (A) 5 are connected on the interior lines reed (A) 3, interior lines connect reeds (B) and are connected on the interior lines reed (B) 8, and both partner and measure mouth, and connect thermistor PTC13 and metal oxide varistor MOV12.
During work; when heavy current is invaded; thermistor PTC13 produces induction; can be limited in electric current in certain safe range; when high voltages such as thunderbolt are invaded; the discharge tube 7 of prime discharges high pressure over the ground by grounding shaft 9, and the metal oxide varistor MOV12 of back level will guarantee the safety of whole circuit as the overvoltage second class protection.Simultaneously be connected the test port that reed is formed by two interior lines reeds with two interior lines, the working condition to circuit that can be real-time is made detection, reacts timely and takes appropriate measures and solve.
Claims (3)
1. main frame Security Unit; comprise pedestal and a pair of outside line reed that is arranged on pedestal; an interior lines reed and a grounding reed; also be provided with the discharge tube that is installed between the two outside line reeds on the pedestal; be installed in a pair of PTC thermistor between outside line reed and the interior lines reed; discharge tube connects grounding shaft by grounding reed; it is characterized in that; between discharge tube and each interior lines reed, be connected with a secondary overvoltage protection element separately; the secondary overvoltage protection element connects grounding shaft by grounding reed; connect interior lines on each interior lines reed separately and connect reed, interior lines connect reed and connect PCT thermistor and secondary overvoltage protection element.
2. main frame Security Unit according to claim 1 is characterized in that, described secondary overvoltage protection element is metal oxide varistor MOV.
3. main frame Security Unit according to claim 1 is characterized in that, discharge tube adopts clamping with being connected of grounding shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200331565U CN201051666Y (en) | 2007-01-05 | 2007-01-05 | Assembly cable frame security guarantee unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200331565U CN201051666Y (en) | 2007-01-05 | 2007-01-05 | Assembly cable frame security guarantee unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051666Y true CN201051666Y (en) | 2008-04-23 |
Family
ID=39338159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200331565U Expired - Fee Related CN201051666Y (en) | 2007-01-05 | 2007-01-05 | Assembly cable frame security guarantee unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201051666Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783508B (en) * | 2010-01-29 | 2012-05-09 | 宁波舜佳电子有限公司 | Full-electronic security unit module |
| CN104954045A (en) * | 2015-06-26 | 2015-09-30 | 国网山东省电力公司济南供电公司 | Line testing device applicable to distributing frame |
-
2007
- 2007-01-05 CN CNU2007200331565U patent/CN201051666Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783508B (en) * | 2010-01-29 | 2012-05-09 | 宁波舜佳电子有限公司 | Full-electronic security unit module |
| CN104954045A (en) * | 2015-06-26 | 2015-09-30 | 国网山东省电力公司济南供电公司 | Line testing device applicable to distributing frame |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 |