CN201036152Y - Voltage mutual inductor for looped network cabinet - Google Patents
Voltage mutual inductor for looped network cabinet Download PDFInfo
- Publication number
- CN201036152Y CN201036152Y CNU2007200119410U CN200720011941U CN201036152Y CN 201036152 Y CN201036152 Y CN 201036152Y CN U2007200119410 U CNU2007200119410 U CN U2007200119410U CN 200720011941 U CN200720011941 U CN 200720011941U CN 201036152 Y CN201036152 Y CN 201036152Y
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- CN
- China
- Prior art keywords
- cable socket
- main unit
- ring main
- voltage transformer
- primary
- 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 - Lifetime
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Abstract
The utility model relates to a dry current transformator used for an outdoor RMU, having an integrated structure formed by casting an iron core, a primary winding, a secondary winding, a primary cable socket and a secondary junction box adopting epoxide resin and is installed on a base arranged with installation holes integratedly. The primary cable socket has a hollow cylinder in the interior and the exterior of the primary cable socket takes the shape of a cone frustum. An annular groove is arranged on the external wall of the end of the cone frustum of the primary cable socket. A metallic cassette with round holes is arranged on the periphery of the root segment of the cone frustum of the primary cable socket. A primary high-voltage fuse protector is arranged in the hollow cylinder inside the primary cable socket. A cover board made of stainless steel is arranged on the secondary junction box and a sealing rubber gasket is arranged between the cover board and the secondary junction box. An externally-coercive fixed head of the cable is arranged at the position of a secondary outlet. The utility model has small volume, flexible installation, full insulation and maintenance-free; moreover, the utility model is arranged with a built-in fuse protector and the mutual inductor system can be effectively protected from being burnt when a malfunction occurs.
Description
Technical field
The utility model relates to a kind of electric power system high-tension measurement equipment, specifically a kind of ring main unit voltage transformer.
Background technology
Voltage transformer is as the equipment of measuring voltage, electric energy in the outdoor ring main unit of electric power system, along with electric modernization development, ring main unit becomes departments such as urban industry garden, residential quarter, commercial center, industrial and mining enterprises day by day as ring network power supply unit and terminal equipment, is the best equipment of power distribution, control and electic protection; General expression voltage transformer volume is big, do not have seal approach, install complicated, have external fuse, need shortcomings such as maintenance, for adapting to the requirement of modernized garden, need development and design to go out the supporting voltage transformer of a kind of and outdoor ring main unit especially, and also do not occur this ring main unit dedicated potential transformer in the market.
The utility model content
For solve existing outdoor ring main unit exist volume big, need periodic maintenance and have defectives such as insulation is unreliable, the utility model purpose is to provide that a kind of volume is little, hermetically sealed, flexible for installation, the protection of band fuse, non-maintaining ring main unit dedicated potential transformer.
For achieving the above object, the technical solution adopted in the utility model is:
It is integral structure that the utility model adopts poured with epoxy resin by iron core, winding, secondary winding, cable socket, a secondary connection box, this integral structure integral installation on a base that has an installing hole, a described cable socket be inner for hollow cylinder, outsidely be the shape of the frustum of a cone.
The groove that has annular on the described cable socket frustum of a cone end outer wall; A cable socket frustum of a cone root periphery has the metal deck of band circular hole; Be connected to No. one time high-tension fuse in the boring cylinder of a cable socket; Have cover plate on the secondary connection box, be stainless steel material, and be provided with seal gasket between the secondary connection box; Secondary goes out line position and has the outer fixedly head of formula cable of compeling.
The utlity model has following beneficial effect and advantage:
1. volume is little, flexible for installation.Primary connection of the present utility model adopts cable plug and cable socket inserting mode, effectively reduced the installing space of ring main unit, it is convenient to peg graft, volume is little, can be installed in any ring main unit flexibly, little, the compact conformation of the volume of having realized ring main unit has been saved floor space, has been adapted to the purpose of modernized garden distribution requirement, makes the electric power system ring network power supply technical quality level stride forward a bigger step;
2. all insulation, hermetically sealed, non-maintaining.The utility model adopts epoxide resin material integral body to water and forms, insulation is reliable, primary connection partly adopts the cable plug mode that is tightly connected, secondary cable adopts the outer fixing seal approach of formula cable of compeling, guaranteed that effectively instrument transformer seals reliably in the running environment of condensation, moisture, non-maintaining, handling safety;
3. have built-in fuse protection.A high-tension fuse of the present utility model directly inserts in the cable socket inner space after being fixed on cable plug, and its blowout current and a winding current capacity are complementary, and can not burn when effectively having protected the instrument transformer system failure.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model external structure lateral plan;
Fig. 3 is the utility model internal structure and fuse schematic diagram.
Embodiment
Shown in Fig. 1～2, it is integral structure that the utility model adopts poured with epoxy resin by iron core 1, winding 2, secondary winding 3, cable socket 4, a secondary connection box 5, this integral structure integral installation on a base that has an installing hole, a described cable socket 4 be inner for hollow cylinder 10, outsidely be the shape of the frustum of a cone.
Has annular groove 7 on cable socket 4 frustum of a cone end outer walls, cable socket 4 frustum of a cone root peripheries have the metal deck 12 of band circular hole, be connected to No. one time high-tension fuse 11 in the boring cylinder 10 of a cable socket 4, the cover plate 8 of secondary connection box 3 is a stainless steel material, sealing is arranged on the secondary connection box 5, and secondary goes out line position and has outer urgent formula cable fixing 9.
Manufacturing process of the present utility model is as follows: secondary winding 3 and winding 2 are concentric to be sleeved on 1 post unshakable in one's determination after on the insulation framework, through being fixed in the casting mold after insulation and the buffering wrapping, adopt the epoxide resin vacuum cast cured explosive to form, integral installation is on a base 6 that has an installing hole then, the formula that thereupon becomes one structure, its cable socket 4 is the cable socket of the shape of the frustum of a cone for inside for the hollow cylinder outside, its boring cylinder 10 can conveniently be realized sealing grafting with the cable plug of high-tension cable as the space of a high-tension fuse 11; The annular groove 7 that has on the outer wall of cable socket frustum of a cone end is convenient to and supporting cable plug chucking; Cable socket frustum of a cone root periphery has the metal deck 12 of band circular hole, and its effect is fixing after being used for high potential cable termination and a cable socket and being seated; Secondary connection lid plate 8 is to adopt stainless steel material to make, and behind the fitted seal rubber cushion, guarantees secondary connection box 5 positiver sealings, and has corrosion-resistant function; Secondary goes out line position and has outer urgent formula cable fixing 9, guarantees that after the secondary cable wiring finishes secondary cable is tightened by positiver sealing.
During use, the voltage transformer installation procedure mainly is divided into three key steps, the first step: utilize mounting seat the instrument transformer integral installation at the ring main unit design attitude; In second step, No. one time the high-tension fuse stiff end inserts a cable plug, inserts then in socket of instrument transformer, utilizes cable fixture and metal deck cable plug to be positioned fixing after the reliable contact; The 3rd step: carry out the secondary connection of voltage transformer, secondary cable seals fastening by the fixing head of outer urgent formula cable, utilize secondary connection lid plate and seal gasket that the secondary terminal is sealed then; Convenient, flexible the finishing of ring main unit dedicated potential transformer installment work.
The utility model ring main unit dedicated potential transformer is a kind of new product that designs according to national standard and outdoor ring main unit specification requirement fully; employing rolls iron core; utilize the electromagnetic conversion principle; make secondary voltage can reflect the situation of change of primary voltage exactly, use as voltage measurement and relaying protection.
The utility model adopts the epoxide resin vacuum cast to form; have that volume is little, hermetically sealed, flexible for installation, band fuse protection, non-maintaining characteristics; realized outdoor ring main unit all insulation, hermetically sealed, major function such as volume is little, compact conformation, flexible for installation, non-maintaining, handling safety, made electric power system ring network power supply technical quality level stride forward a bigger step.
Claims (6)
1. ring main unit voltage transformer, adopting poured with epoxy resin by iron core, winding, secondary winding, cable socket, a secondary connection box is integral structure, this integral structure integral installation is characterized in that on a base that has an installing hole: a described cable socket (4) for inner for hollow cylinder (10), outsidely be the shape of the frustum of a cone.
2. by the described ring main unit voltage transformer of claim 1, it is characterized in that: the groove (7) that has annular on the outer wall of a cable socket (4) frustum of a cone end.
3. by the described ring main unit voltage transformer of claim 1, it is characterized in that: a cable socket (4) frustum of a cone root periphery has the metal deck (12) of band circular hole.
4. by the described ring main unit voltage transformer of claim 1, it is characterized in that: be connected to a high-tension fuse (11) in the boring cylinder (10) of a cable socket (4).
5. by the described ring main unit voltage transformer of claim 1, it is characterized in that: have cover plate (8) on the secondary connection box (5), be stainless steel material, and be provided with seal gasket between the secondary connection box (3).
6. by the described ring main unit voltage transformer of claim 1, it is characterized in that: secondary goes out line position and has the outer fixing head of formula cable (9) of compeling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200119410U CN201036152Y (en) | 2007-04-30 | 2007-04-30 | Voltage mutual inductor for looped network cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200119410U CN201036152Y (en) | 2007-04-30 | 2007-04-30 | Voltage mutual inductor for looped network cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201036152Y true CN201036152Y (en) | 2008-03-12 |
Family
ID=39197041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200119410U Expired - Lifetime CN201036152Y (en) | 2007-04-30 | 2007-04-30 | Voltage mutual inductor for looped network cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201036152Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877273A (en) * | 2010-04-19 | 2010-11-03 | 郑文秀 | Voltage transformer |
| CN103093949A (en) * | 2013-02-21 | 2013-05-08 | 上海磊跃自动化设备有限公司 | Mutual inductance device for temperature-control-type low-voltage circuit breaker |
| CN103578725A (en) * | 2012-07-20 | 2014-02-12 | 大连第一互感器有限责任公司 | Dry type voltage transformer for switchgear |
| CN107039896A (en) * | 2017-05-31 | 2017-08-11 | 天津市三源电力设备制造有限公司 | A kind of high-acruracy survey ring main unit |
| CN110428955A (en) * | 2019-09-03 | 2019-11-08 | 陕西正泰智能电气有限公司 | Secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor |
-
2007
- 2007-04-30 CN CNU2007200119410U patent/CN201036152Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877273A (en) * | 2010-04-19 | 2010-11-03 | 郑文秀 | Voltage transformer |
| CN103578725A (en) * | 2012-07-20 | 2014-02-12 | 大连第一互感器有限责任公司 | Dry type voltage transformer for switchgear |
| CN103578725B (en) * | 2012-07-20 | 2016-04-13 | 大连第一互感器有限责任公司 | Dry type voltage transformer for switchgear |
| CN103093949A (en) * | 2013-02-21 | 2013-05-08 | 上海磊跃自动化设备有限公司 | Mutual inductance device for temperature-control-type low-voltage circuit breaker |
| CN103093949B (en) * | 2013-02-21 | 2016-03-30 | 上海磊跃自动化设备有限公司 | A kind of mutual inductance device for temperature-control-low-voltage low-voltage circuit breaker |
| CN107039896A (en) * | 2017-05-31 | 2017-08-11 | 天津市三源电力设备制造有限公司 | A kind of high-acruracy survey ring main unit |
| CN110428955A (en) * | 2019-09-03 | 2019-11-08 | 陕西正泰智能电气有限公司 | Secondary outlet box sealing structure based on outdoor type epoxy resin mutual inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080312 |
|
| CX01 | Expiry of patent term |