CN201732645U - Resistance cabinet - Google Patents
Resistance cabinet Download PDFInfo
- Publication number
- CN201732645U CN201732645U CN201020116121XU CN201020116121U CN201732645U CN 201732645 U CN201732645 U CN 201732645U CN 201020116121X U CN201020116121X U CN 201020116121XU CN 201020116121 U CN201020116121 U CN 201020116121U CN 201732645 U CN201732645 U CN 201732645U
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- CN
- China
- Prior art keywords
- resistor
- isolating switch
- cabinet
- disconnecting switch
- box
- 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 discloses a resistance cabinet which consists of a shell, a resistor, a disconnecting switch integrating hand operation and power operation, and an isolation layer, wherein the resistor and the disconnecting switch are distributed in the cabinet in an upper-lower layer manner, and a copper bar is connected between the resistor and the disconnecting switch by penetrating through a wall bushing; the middle of the resistor is provided with the isolation layer, the resistor is supported by a pillar insulator made of fire-resistance ceramic, the resistor and the disconnecting switch are distributed in the shell in the upper-lower layer manner, the resistor is arranged above the disconnecting switch, the on-off plane of a moving contact of the disconnecting switch is parallel to the installation plane of the resistor, and the disconnecting switch integrating hand operation and power operation is provided with a hand and power operation mechanism. The resistance cabinet has the advantages of compact structure, high reliability, safe and convenient operation, and capabilities of completely realizing high reliability and intelligence, smaller volume and remote controlling.
Description
Technical field
The utility model relates to resistor box, more specifically relates to a kind of high-power neutral resistance cabinet, the overvoltage protection when it is applicable to distribution system, Railway System power circuit generation earth fault.Be a kind of easy and simple to handle, high reliability, compact conformation, remote controlled resistor box.
Background technology
In recent years, development along with electrical network, the use of cable line is more and more, cable is more and more longer, and therefore when circuit generation earth fault, the neutral ground electric current constantly increases, for the overvoltage that can effectively suppress to cause because of earth fault is destroyed electrical network, is reached the national policy of energy-saving and emission-reduction simultaneously, this has just proposed to need more high-power, more high reliability and small size more to neutral resistance, and possess can unattended duty, simple to operate, characteristics easy to maintenance.Up to now, adopt both at home and abroad mostly isolating switch vertical be installed in that the resistor top is arranged or about arrange, isolating switch can only manual operation and its operating grip be exposed at outside the cabinet outward, long cable section of ingoing line is directly introduced cabinet top and is connected with isolating switch, such resistor box not only volume is big, safeguard inconvenient, and the high temperature that produces can work because of resistor the time destroys the insulation of cable, the manual-operating mechanism complicated operation, can't Long-distance Control, do not possess chain function, be exposed at the requirement that the outer operating grip of housing can not adapt to unattended duty outward.
Summary of the invention
The purpose of this utility model is to be to provide a kind of resistor box, compact conformation, reliability height, easy and simple to handle, remote controlled resistor box.Solved the neutral point cable by cable trough at the bottom of the cabinet during inlet wire, the inconvenience that cable is connected with isolating switch, dangerous and isolating switch be difficult to manual operation, can not Long-distance Control problem.
In order to realize above-mentioned purpose, the utility model adopts following technical measures:
A kind of resistor box, it is made up of cabinet shell, resistor, separator, isolating switch, it is characterized in that: resistor and isolating switch levels in cabinet is arranged, resistor is above isolating switch, passing wall bushing with copper bar between resistor and the isolating switch is connected, the moving contact folding plane of isolating switch is parallel with the mounting plane of resistor, and isolating switch has motor-operating mechanism, and manual operation connecting rod and handwheel are equipped with in the end of motor-operating mechanism motor.
A kind of resistor box by shell, resistor, post insulator, resistor tail end draw row, supporting insulator, wall bushing, earth terminal, long cable section of ingoing line hole and hand, electromotion integrated isolating switch, current transformer, electric control box is formed.Its annexation is: resistor and isolating switch levels in cabinet is arranged, passes wall bushing by copper bar and connects.Resistor is arranged in the top of isolating switch, is provided with separator in the middle of the resistor box.Resistor adopts the refractory post insulator to support.This arrangement is effectively separated resistor box heating region and non-heating region guaranteeing that cable is connected with isolating switch under the easy prerequisite.Adopted isolating switch electronic (manually) integral type operating mechanism structure simultaneously.(by the next cable of neutral points such as generator, transformer) enters resistor box inside by the long cable section of ingoing line hole, be connected on the fixed contact of inlet wire isolating switch, drawing row via the isolating switch moving contact passes wall bushing and is connected on the connection row of resistor bottom on upper strata, neutral point current is connected to current transformer one end by resistor after draw row by the fixing resistor tail end of post insulator, be connected on the earth terminal by the current transformer other end, earth terminal inserts the earth again.
Because the neutral ground device relates to the complex art problem of all many-sides such as power supply reliability, overvoltage and insulation coordination, relaying protection, system stability.Under the condition that satisfies degree of protection that GB requires and outward appearance, at the characteristics of electric power and railway system's unattended duty, this resistor box does not have devices such as the hinged bolt that exposes, isolating switch manual-operating mechanism, change over switch.In the limited power distribution room in space, the overall dimension of resistor box is in that to satisfy the condition lower volume that electric, heat balance, mechanical each side requires less, and plant maintenance is convenient.Resistor box inlet wire 10kV cable is introduced at the bottom of the cabinet by cable trough, is connected to the fixed contact that is arranged in the isolating switch at the bottom of the cabinet, and easy to connect, resistor can not destroy the insulation of cable because of resistor heats up at the second layer.
All supporting insulators and post insulator in the cabinet are selected resistant to elevated temperatures ceramic material for use, and resistor disc is under the requirement of satisfying thermal stress and insulation, and the mechanical strength height causes short circuit between sheet to avoid the heating distortion.Resistor box primary current instrument transformer and control section all should be arranged in the interior low-temperature space of cabinet as being seated in the resistor box bottom, prevent to cause because of resistance heating the damage of relevant device.In the high-speed railway electric power system, stress the power supply reliability of equipment in particular, this resistor box adopts hand, electric isolating switch, and is easy and simple to handle reliable.During electric operating on electric control box direct control, and can realize distant place control, can realize chainly very easily with the place ahead switch, guarantee that " close afterwards earlier and divide " avoids misoperation when operation.Isolating switch is equipped with manual-operating mechanism, can manually divide when control loop cuts off the power supply, close a floodgate, and handle is installed in the cabinet to avoid idler's misoperation.Resistor box can reach high reliability fully, high-intelligentization, the requirement that volume is less.
Description of drawings
Fig. 1 is a kind of resistor box structural representation
Fig. 2 is a resistor box bottom layout plan
Wherein: shell 1, resistor 2, post insulator 3, tail end are drawn row 4, supporting insulator 5, wall bushing 6, earth terminal 7, long cable section of ingoing line hole 8 and isolating switch 9, handwheel 10, manual operation connecting rod 11, motor-operating mechanism (motor model: HDR-23110) 12, current transformer 13, electric control box 14, separator 15.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
A kind of resistor box, it is made up of cabinet shell 1, resistor 2, isolating switch 9, separator 15 etc.It is characterized in that: resistor 2 arranges with isolating switch 9 levels in cabinet, between pass wall bushing 6 with copper bar and connect.Resistor 2 is arranged in the top of isolating switch 9, passes wall bushing with copper bar between resistor 2 and the isolating switch 9 and is connected, and the mounting plane of the moving contact of isolating switch 9 (B) folding plane and resistor 2 is parallel relation.Isolating switch 9 has motor-operating mechanism 12, and motor-operating mechanism 12 is driven by motor reduction gearbox, and motor links to each other with reduction box one end, and the other end of rotation axis is equipped with manual operation connecting rod 11 and handwheel 10.
Described isolating switch 9 places in the cabinet shell 1, is equipped with the electric control box 14 of control isolating switch 9 in the bottom of cabinet shell 1.
Described resistor 2 and the isolating switch 9 middle separators 15 that are provided with, resistor 2 adopts refractory post insulator 4 to support, resistor 2 tail ends are drawn row 4 and are passed current transformer 13 1 ends that separator 15 is connected to the resistor box bottom by post insulator 3, be connected on the earth terminal 7 by current transformer 13 other ends, earth terminal 7 inserts the earth again.
Be provided with separator 15 in the middle of the housing 1, resistor 2 divides levels to arrange in shell 1 with isolating switch 9.Isolating switch 9 places in the cabinet shell 1, is equipped with the electric control box 14 of control isolating switch 9 in the bottom of cabinet shell 1.Hand, electromotion integrated isolating switch all place the inside of shell 1.The position corresponding with handwheel 10, shell 1 are provided with openable door.In the bottom of shell 1, be equipped with electric control box 14.Electric operation part, overcurrent relay, the counter of electronic isolation switch are housed in electric control box 14 inside, and the control section of automatic heating and dehumidification device.The neutral point cable via cabinet at the bottom of cable trough enter in the cabinet from long cable section of ingoing line hole 8, receive the fixed contact terminal A of isolating switch 9, when isolating switch closes a floodgate, fixed contact A and isolating switch moving contact B connect, on the moving contact B copper bar is housed, be upward through wall bushing 6, wall bushing is installed on the separator 15, the copper bar that passes is connected on the outlet row of resistor 2 bottoms, resistor 2 is fixing by 4 refractory supporting insulator bottoms, both sides also have 8 supporting insulators to prevent that resistor from damaging because of road bump in transportation, the tail end of resistor 2 is drawn row 4 and is passed current transformer 13 1 ends that separator 15 is connected to the resistor box bottom by post insulator 3, be connected on the earth terminal 7 by current transformer 13 other ends, earth terminal 7 inserts the earth again.In the time of operation, use the switch knob on the electric control box, red light is bright, the 12 energising motions of isolating switch motor-operating mechanism, and the sub-B in isolating switch moved end is connected to static terminal A, and isolating switch 9 closes a floodgate, and motor-operating mechanism 12 stops.When pressing opening button, green light is bright, motor-operating mechanism 12 energising motions, and the sub-B in isolating switch 9 moved ends leaves static terminal A, isolating switch 9 separating brakes, the back motor-operating mechanism 12 that puts in place stops.
Claims (3)
1. resistor box, it is by cabinet shell (1), resistor (2), separator (15), isolating switch (9) is formed, it is characterized in that: resistor (2) is arranged with isolating switch (9) levels in cabinet, resistor (2) is in isolating switch (9) top, passing wall bushing with copper bar between resistor (2) and the isolating switch (9) is connected, the moving contact folding plane of isolating switch (9) is parallel with the mounting plane of resistor (2), isolating switch (9) has motor-operating mechanism (12), and manual operation connecting rod (11) and handwheel (10) are equipped with in the end of motor-operating mechanism (12) motor.
2. a kind of resistor box according to claim 1, described isolating switch (9) place in the cabinet shell (1), are equipped with the electric control box (14) of control isolating switch (9) in the bottom of cabinet shell (1).
3. a kind of resistor box according to claim 1, described resistor (2) and the middle separator (15) that is provided with of isolating switch (9), resistor (2) adopts refractory post insulator (4) to support, resistor (2) tail end is drawn row (4) and is passed current transformer (13) one ends that separator (15) is connected to the resistor box bottom by post insulator (3), be connected on the earth terminal (7) by current transformer (13) other end, earth terminal (7) inserts the earth again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020116121XU CN201732645U (en) | 2010-02-05 | 2010-02-05 | Resistance cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020116121XU CN201732645U (en) | 2010-02-05 | 2010-02-05 | Resistance cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732645U true CN201732645U (en) | 2011-02-02 |
Family
ID=43523802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020116121XU Expired - Fee Related CN201732645U (en) | 2010-02-05 | 2010-02-05 | Resistance cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201732645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730853A (en) * | 2013-12-27 | 2014-04-16 | 苏州市龙源电力科技股份有限公司 | Grounding resistor cabinet |
| CN103887024A (en) * | 2012-12-19 | 2014-06-25 | 上海吉泰电阻器有限公司 | Encapsulation resistor for high-voltage power transmission and distribution system |
-
2010
- 2010-02-05 CN CN201020116121XU patent/CN201732645U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887024A (en) * | 2012-12-19 | 2014-06-25 | 上海吉泰电阻器有限公司 | Encapsulation resistor for high-voltage power transmission and distribution system |
| CN103730853A (en) * | 2013-12-27 | 2014-04-16 | 苏州市龙源电力科技股份有限公司 | Grounding resistor cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20180205 |