GXQ ( B ) J -7.2-126kV全預制電容型屏蔽筒

GXQ (B) J -7.2-126kV fully prefabricated capacitive shielding barrel

1．全屏蔽復合絕緣管型母線規格型號說明

Specifications and models of fully shielded composite insulated tubular busbars

例1:GXQJ-35/3150代表復合絕緣管型母線，全絕緣結構，額定電壓35kV，額定電流3150 A 。

Example 1: GXQJ-35/3150 represents composite insulated tubular bus, fully insulated structure, rated voltage 35kV, rated current 3150 A.

例2:GXBJ-10/4000代表復合絕緣管型母線，半絕緣結構，額定電壓10kV，額定電流4000A。

Example 2: GXBJ-10/4000 represents composite insulated tubular busbar, semi-insulated structure, rated voltage 10kV, rated current 4000A.

2．產品結構  Product Structure

全蔽復合絕緣管型母線以聚酯材料為主絕緣，應用電容均壓原理，采用全機械繞包工藝在管型導體外表面制做絕緣。

The fully shielded composite insulated tubular bus is mainly insulated with polyester material, and the principle of capacitance equalization is applied, and the all-mechanical wrapping process is used to make insulation on the outer surface of the tubular conductor.

結構如下圖  The structure is as follows：

(1）總體結構  Overall structure

（2）絕緣截面結構  Insulated cross-section structure

（3）絕緣制作   Insulation production 

直管母線機械繞包（單根母線最大繞包長度為18米）

Mechanical wrapping of straight tube bus (maximum taping length of a single bus is 18 meters)

彎管母線機械繞包（可實現多角度繞包）

Mechanical wrapping of bent bus (multi-angle wrapping can be realized)

(4）導體連接  Conductor connection

 a 、焊接連接：采用內襯式補強襯管，焊接坡口大于兩倍導流體壁厚，焊接一體成型。

Welded connection: the lining reinforcing liner is adopted, the welding groove is greater than twice the wall thickness of the fluid conduction, and the welding is integrally formed.

             鋁管焊接前                                                鋁管焊接打磨后

 Before welding of aluminum tubes           After the aluminum tube is welded and polished

              銅管焊接前                                                銅管焊接打磨后

        Before copper pipe welding                              After the copper pipe is welded and polished

b 、內嵌式機械連接：采用內嵌式中間連接器對導流體進行連接，導流體內壁及中間連接器外表面經精密機械加工，接觸面緊密配合。

Embedded mechanical connection: The embedded intermediate connector is used to connect the conductive fluid, and the inner wall of the diversion and the outer surface of the intermediate connector are precision machined, and the contact surface is closely matched.

c 、可伸縮軟連接：母線接頭位置采用軟銅箔或銅編織線軟連接方式連接，適用于抵消單段較長母線（50~60米）的熱脹冷縮效應。

Retractable soft connection: The position of the bus joint is connected by soft copper foil or copper braided wire, which is suitable for counteracting the thermal expansion and cold contraction effect of a single section of long bus (50~60 meters).

(5）母線中間連接部位絕緣結構  

 Insulation structure of the middle connection part of the busbar

 a 、全預制電容型絕緣屏蔽筒結構 

Fully prefabricated capacitive insulated shielding tube structure

全預制電容型絕緣屏蔽筒采用與母線端部梯差相反的電容屏結構，安裝時，屏蔽筒與母線電容屏電氣連通。屏蔽筒內可用多種方式連接母線導體。結構如下圖：

The fully prefabricated capacitive insulated shielding tube adopts a capacitive screen structure that is opposite to the ladder difference at the end of the bus, and when installed, the shielding tube is electrically connected with the bus capacitive screen. The bus conductor can be connected in a variety of ways in the shield barrel. The structure is as follows:

導體焊接方式全預制電容型絕緣屏蔽筒結構

The conductor welding method is fully prefabricated capacitive insulated shielding tube structure

導體焊接方式全預制電容型絕緣屏蔽筒結構

The conductor welding method is fully prefabricated capacitive insulated shielding tube structure

全預制電容型絕緣屏蔽筒  Fully prefabricated capacitive insulated shielding cylinder

導體軟連接方式全預制電容型絕緣屏蔽筒結構

The conductor soft connection method is fully prefabricated capacitive insulated shielding tube structure

可伸縮型全預制電容型絕緣屏蔽筒

Retractable fully prefabricated capacitive insulated shielding cylinder

全預制電容型絕緣屏蔽筒在廠內檢測各項電氣指標，質量完全受控。現場安裝快捷，受環境影響小。可有效保證施工質量及工期。

The fully prefabricated capacitive insulated shielding cylinder is tested in the factory for various electrical indicators, and the quality is completely controlled. On-site installation is quick and less affected by the environment. It can effectively ensure the construction quality and construction period.

全預制電容型絕緣屏蔽筒廠內繞包

Fully prefabricated capacitive insulated shielding cylinder in-factory wrapping

(6）端部結構  End structure

 a 、導體端部壓接  Conductor end crimping

接線端子液壓一體成型的管型母線

Tubular busbar with hydraulic integral terminal blocks

全屏蔽復合絕緣管型母線端部是采用特殊工藝將導流體（銅、鋁管）端部直接壓扁、打孔制做，其各電流等級的端子尺寸皆符合國標GB5237要求。

The end of the fully shielded composite insulated tubular bus is made by directly flattening and punching the end of the conductive fluid (copper and aluminum tube) by a special process, and the terminal sizes of each current level meet the requirements of the national standard GB5237.

 b 、母線端部均壓結構   Equalizing structure at the end of the busbar

全屏蔽復合絕緣管型母線端部，零屏、中間電容屏、接地屏端部呈階梯狀設置，以起到分散電場的作用。產品端部無需另外加裝半導電應力錐分散電場。結構如下圖：

The ends of the fully shielded composite insulated tubular bus, the ends of the zero screen, the intermediate capacitive screen and the grounding screen are set in a stepped manner to play the role of dispersing the electric field. There is no need for a semi-conductive stress cone at the end of the product to disperse the electric field. The structure is as follows:

母線端部電容屏結構   Capacitive screen structure at the end of the busbar

母線端部電容屏結構實物  The capacitive screen structure at the end of the busbar is in kind

該端部均壓結構來源于高壓電氣產品，具有均勻電場能力強、與母線主絕緣制做工藝一致、可逐根進行電氣檢測、無需額外均壓方案。

The end voltage equalization structure is derived from high-voltage electrical products, which has strong uniform electric field ability, is consistent with the main insulation process of the busbar, and can be tested one by one without additional voltage equalization scheme.

3．產品特點  Features

 a 、同類產品共有特點  Similar products share characteristics

載流量大、溫升低、集膚效應小、散熱性能好。

Large current carrying capacity, low temperature rise, small skin effect, good

headissipationperformance.

機械強度高，允許應力為矩形母線的4倍，安裝跨距大。

The mechanical strength is high, the allowable stress is 4 times that of the rectangular bus

bar, and the installation span is large.

電氣絕緣性能可靠，不需要穿墻套管及支柱絕緣子等附件。

Reliable electrical insulation, no accessories such as wall sleeves and post insulators are 

required.

敷設節省空間，可架空敷設、電纜溝敷設、夾層敷設、隧道敷設、垂直敷設等多種敷設方式。

The laying saves space and can be laid in a variety of ways, such as overheadlaying, cable 

trench laying, mezzanine laying, tunnel laying, vertical laying, etc.

安裝方便、外形美觀、免維護。

Easy to install, beautiful in appearance, maintenance-free.

廠家提供從母線前期設計、生產加工、現場安裝全程服務，屬于"交鑰匙"工程。

The manufacturer provides full service from the pre-design, production and processing, and

 on-site installation of the bus, which is a "turnkey" project.

 b 、我公司產品的獨特優勢  The unique advantages of our company's products

產品采用電容均壓原理，直段和彎段母線均采用機械繞包，絕緣工藝一致，質量可靠，性能優異。

The product adopts the principle of capacitance equalization, and the straight and cubus bars are mechanically wrapped, with consistent insulation process, reliable quality and 

excellent performance.

產品絕緣水平高，局部放電在1.5Ur電壓下小于5pC，高于行業標準 Ur 電壓下小于5pC。

The product has a high insulation level, and the partial discharge is less than 5pC at 1.5Ur 

voltage, which is higher than the industry standard of less than 5pC at your voltage.

母線導體端部液壓一體成型，中間連接采用焊接工藝（或內嵌式連接器），載流能力強，溫升低。

The end of the bus conductor is hydraulically integrally formed, and the intermediate connection 

adopts the welding process (or inline connector), which has strong current 

carrying capacity and low temperature rise.

母線中間絕緣，采用全預制電容型絕緣屏蔽筒，外表地電位，工廠化生產，電氣指標完全受控。

The middle insulation of the bus bar is made of fully prefabricated capacitive insulated shielding cylinder, 

the surface and ground potential, factory production, and the electrical indicators are completely controlled.

單根母線最長可達18m，中間接頭少，安全可靠性高，生產周期短。

The longest length of a single bus bar is 18m, with few intermediate joints, high safety and reliability, 

and short production cycle.

可向高壓及超高壓固體絕緣母線方向發展。

It can be developed in the direction of high-voltage and ultra-high-voltage solid insulated bus.

4．適用范圍  Scope of application

變壓器至開關柜連接  The transformer is connected to the switchgear

開關柜至開關柜連接   Switchgear-to-switchgear connection

開關柜至電抗器連接   Switch cabinet to reactor connection

發電機至開關柜連接   Generator-to-switch cabinet connection

5．技術參數  Technical parameters

額定電壓  Rated voltage：7.2~126kV

額定電流  Current rating：630~8000A

額定頻率  Rated frequency：50(60) Hz 

6．敷設方式  Laying method

架空敷設  Overhead laying

電纜溝敷設  Cable trench laying

電纜夾層敷設  Cable mezzanine laying

隧道敷設  Tunneling

垂直敷設  Vertical laying

包含上述兩種或以上的混合敷設 Contains two or more of the above mixed lays

7．環境條件  Environmental conditions

環境溫度  Ambient temperature：-50℃~+45℃

最大日溫差  Maximum daily temperature difference：25℃

相對濕度：日平均值不大于95%，月平均值不大于90%

Relative humidity: daily average value is not more than 95%, monthly average value is not

 more than 90%

海拔高度：不超過1000m（超過1000m時需要進行海拔校驗）

Altitude: no more than 1000m (altitude verification is required when exceeding 1000m)

地震強度：按GB50260的要求，地震設防烈度為8度（設計基本地震加速度值不超過0.2g)

Seismic intensity: According to the requirements of the GB50260, the seismic fortification 

intensity is 8 degrees (the design basic seismic acceleration value does not exceed 0.2g)

防污等級  Stain resistance rating：> II 級

8．主要性能  Key features

產品滿足 DL / T 1658《35kV及以下固體絕緣管型母線》、 Q /GDW11646《7.2kV-40.5kV絕緣管

型母線技術規范國家電網公司企業標準》的要求。

The product meets the requirements of DL / T 1658 "35kV and below solid insulated tubular

 bus" and Q / GDW11646 "7.2kV-40.5kV insulated tubular bus technical specification State 

Grid Corporation Enterprise Standard".

(1）絕緣水平及局部放電水平  Insulation level and partial discharge level

(2）介質損耗因數  Dielectric dissipation factor

10kV電壓下測量，介質損耗因數不大于0.005（測試度10~40℃)

Measured at 10kV voltage, the dielectric loss factor is not more than 0.005 (test degree 10~

40°C)

(3）溫升限值  Temperature rise limits

最高溫升不大于50K  The maximum temperature rise is not more than 50K

(4）短時熱電流、動穩定電流  Short-term thermal current, dynamic and stable current

9.導體規格  Conductor specifications

在額定電壓、額定電流相同的情況下選用鋁合金為導體的產品比選用銅為導體的產品節約大概30%-

40％的材料成本。

In the case of the same rated voltage and rated current, the product with aluminum alloy as

 the conductor saves about 30%-40% of the material cost compared with the product with 

copper as the conductor.

11．驗收及維護  Acceptance and maintenance

每根全屏蔽復合絕緣管型母線出廠前均進行了工頻耐壓、局部放電測量、介質損耗因數測量。產品到

現場后，可以按GB50150《電氣裝置安裝工程電氣設備交接試驗標準》進行。全屏蔽復合絕緣管型母

線基本不需要維護，每2~3年進行一次耐壓和電容量及介質損耗因數測量即可。

Each fully shielded composite insulated tubular busbar has been measured by power 

frequency withstand voltage, partial discharge and dielectric loss factor before leaving 

the factory. After the product arrives at the site, it can be carried out in accordance with 

the GB50150 "Electrical Equipment Handover Test Standard for Electrical Installation 

Engineering". The fully shielded composite insulated tubular bus basically does not need

 maintenance, and the withstand voltage, capacitance and dielectric dissipation factor can

 be measured every 2~3 years.

12．運輸及安裝  Transportation and installation

出廠時各段全屏蔽復合絕緣管型母線分別編號，便于現場安裝。

When leaving the factory, each section of fully shielded composite insulated tubular bus is 

numbered separately, which is convenient for on-site installation.

運輸時用防震材料包裝，防止劇烈震動。

Packed with shockproof material during transportation to prevent severe vibration.

出廠文件包括：產品合格證、試驗報告和產品說明書。

The factory documents include: product certificate, test report and product manual.

安裝好后應將全屏蔽復合絕緣管型母線的末屏引線可靠接地。

After installation, the end screen lead of the fully shielded composite insulated tubular bus 

should be reliably grounded.

13．訂貨須知  Ordering instructions

訂貨時至少需提出下述參數：

At least the following parameters should be provided when ordering:

電氣參數：額定電壓、額定電流、短時熱電流、動穩定電流、絕緣水平。

Electrical parameters: rated voltage, rated current, short-time thermal current, dynamic 

stable current, insulation level.

環境參數：環境溫度、海拔高度、污穢等級。

Environmental parameters: ambient temperature, altitude, pollution level.

敷設方式：架空敷設、電纜溝敷設、電纜夾層敷設、豎直敷設、混合敷設。

Laying methods: overhead laying, cable trench laying, cable sandwich laying, vertical laying, 

mixed laying.

供貨范圍：變壓器至開關柜連接、開關柜至開關柜連接、開關柜至電抗器連接、發電機至

開關柜連接。

Scope of supply: transformer to switch cabinet connection, switch cabinet to switch cabinet 

connection, switch cabinet to reactor connection, generator to switch cabinet connection.

特殊附件：避雷器、放電次數計數器、避雷器在線監測儀、接地鉤、相間絕緣隔板、端部

防護罩。

Special accessories: lightning arrester, discharge number counter, lightning arrester online

 monitor, grounding hook, phase insulation partition, end protective cover.