GXQ ( B ) J -7.2-126kV全预制电容型屏蔽筒

GXQ ( B ) J -7.2-126kV全预制电容型屏蔽筒

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

1．全屏蔽复合绝缘管型母线规格型号说明

Specifications and models of fully shielded composite insulated tubular busbars

例1:GXQJ-35/3150代表复合绝缘管型母线，全绝缘结构，额定电压35kV，额定电流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代表复合绝缘管型母线，半绝缘结构，额定电压10kV，额定电流4000A。

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

2．产品结构  Product Structure

全蔽复合绝缘管型母线以聚酯材料为主绝缘，应用电容均压原理，采用全机械绕包工艺在管型导体外表面制做绝缘。

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.

结构如下图  The structure is as follows：

(1）总体结构  Overall structure

（2）绝缘截面结构  Insulated cross-section structure

（3）绝缘制作   Insulation production 

直管母线机械绕包（单根母线最大绕包长度为18米）

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

弯管母线机械绕包（可实现多角度绕包）

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

(4）导体连接  Conductor connection

 a 、焊接连接：采用内衬式补强衬管，焊接坡口大于两倍导流体壁厚，焊接一体成型。

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.

             铝管焊接前                                                铝管焊接打磨后

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

              铜管焊接前                                                铜管焊接打磨后

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

b 、内嵌式机械连接：采用内嵌式中间连接器对导流体进行连接，导流体内壁及中间连接器外表面经精密机械加工，接触面紧密配合。

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 、可伸缩软连接：母线接头位置采用软铜箔或铜编织线软连接方式连接，适用于抵消单段较长母线（50~60米）的热胀冷缩效应。

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）母线中间连接部位绝缘结构  

 Insulation structure of the middle connection part of the busbar

 a 、全预制电容型绝缘屏蔽筒结构 

Fully prefabricated capacitive insulated shielding tube structure

全预制电容型绝缘屏蔽筒采用与母线端部梯差相反的电容屏结构，安装时，屏蔽筒与母线电容屏电气连通。屏蔽筒内可用多种方式连接母线导体。结构如下图：

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:

导体焊接方式全预制电容型绝缘屏蔽筒结构

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

导体焊接方式全预制电容型绝缘屏蔽筒结构

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

全预制电容型绝缘屏蔽筒  Fully prefabricated capacitive insulated shielding cylinder

导体软连接方式全预制电容型绝缘屏蔽筒结构

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

可伸缩型全预制电容型绝缘屏蔽筒

Retractable fully prefabricated capacitive insulated shielding cylinder

全预制电容型绝缘屏蔽筒在厂内检测各项电气指标，质量完全受控。现场安装快捷，受环境影响小。可有效保证施工质量及工期。

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.

全预制电容型绝缘屏蔽筒厂内绕包

Fully prefabricated capacitive insulated shielding cylinder in-factory wrapping

(6）端部结构  End structure

 a 、导体端部压接  Conductor end crimping

接线端子液压一体成型的管型母线

Tubular busbar with hydraulic integral terminal blocks

全屏蔽复合绝缘管型母线端部是采用特殊工艺将导流体（铜、铝管）端部直接压扁、打孔制做，其各电流等级的端子尺寸皆符合国标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 、母线端部均压结构   Equalizing structure at the end of the busbar

全屏蔽复合绝缘管型母线端部，零屏、中间电容屏、接地屏端部呈阶梯状设置，以起到分散电场的作用。产品端部无需另外加装半导电应力锥分散电场。结构如下图：

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:

母线端部电容屏结构   Capacitive screen structure at the end of the busbar

母线端部电容屏结构实物  The capacitive screen structure at the end of the busbar is in kind

该端部均压结构来源于高压电气产品，具有均匀电场能力强、与母线主绝缘制做工艺一致、可逐根进行电气检测、无需额外均压方案。

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．产品特点  Features

 a 、同类产品共有特点  Similar products share characteristics

载流量大、温升低、集肤效应小、散热性能好。

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

headissipationperformance.

机械强度高，允许应力为矩形母线的4倍，安装跨距大。

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

bar, and the installation span is large.

电气绝缘性能可靠，不需要穿墙套管及支柱绝缘子等附件。

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

required.

敷设节省空间，可架空敷设、电缆沟敷设、夹层敷设、隧道敷设、垂直敷设等多种敷设方式。

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.

安装方便、外形美观、免维护。

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

厂家提供从母线前期设计、生产加工、现场安装全程服务，属于"交钥匙"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 、我公司产品的独特优势  The unique advantages of our company's products

产品采用电容均压原理，直段和弯段母线均采用机械绕包，绝缘工艺一致，质量可靠，性能优异。

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.

产品绝缘水平高，局部放电在1.5Ur电压下小于5pC，高于行业标准 Ur 电压下小于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.

母线导体端部液压一体成型，中间连接采用焊接工艺（或内嵌式连接器），载流能力强，温升低。

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.

母线中间绝缘，采用全预制电容型绝缘屏蔽筒，外表地电位，工厂化生产，电气指标完全受控。

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.

单根母线最长可达18m，中间接头少，安全可靠性高，生产周期短。

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

and short production cycle.

可向高压及超高压固体绝缘母线方向发展。

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

4．适用范围  Scope of application

变压器至开关柜连接  The transformer is connected to the switchgear

开关柜至开关柜连接   Switchgear-to-switchgear connection

开关柜至电抗器连接   Switch cabinet to reactor connection

发电机至开关柜连接   Generator-to-switch cabinet connection

5．技术参数  Technical parameters

额定电压  Rated voltage：7.2~126kV

额定电流  Current rating：630~8000A

额定频率  Rated frequency：50(60) Hz 

6．敷设方式  Laying method

架空敷设  Overhead laying

电缆沟敷设  Cable trench laying

电缆夹层敷设  Cable mezzanine laying

隧道敷设  Tunneling

垂直敷设  Vertical laying

包含上述两种或以上的混合敷设 Contains two or more of the above mixed lays

7．环境条件  Environmental conditions

环境温度  Ambient temperature：-50℃~+45℃

最大日温差  Maximum daily temperature difference：25℃

相对湿度：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：不超过1000m（超过1000m时需要进行海拔校验）

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

地震强度：按GB50260的要求，地震设防烈度为8度（设计基本地震加速度值不超过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)

防污等级  Stain resistance rating：> II 级

8．主要性能  Key features

产品满足 DL / T 1658《35kV及以下固体绝缘管型母线》、 Q /GDW11646《7.2kV-40.5kV绝缘管

型母线技术规范国家电网公司企业标准》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）绝缘水平及局部放电水平  Insulation level and partial discharge level

(2）介质损耗因数  Dielectric dissipation factor

10kV电压下测量，介质损耗因数不大于0.005（测试度10~40℃)

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

40°C)

(3）温升限值  Temperature rise limits

最高温升不大于50K  The maximum temperature rise is not more than 50K

(4）短时热电流、动稳定电流  Short-term thermal current, dynamic and stable current

9.导体规格  Conductor specifications

在额定电压、额定电流相同的情况下选用铝合金为导体的产品比选用铜为导体的产品节约大概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．验收及维护  Acceptance and maintenance

每根全屏蔽复合绝缘管型母线出厂前均进行了工频耐压、局部放电测量、介质损耗因数测量。产品到

现场后，可以按GB50150《电气装置安装工程电气设备交接试验标准》进行。全屏蔽复合绝缘管型母

线基本不需要维护，每2~3年进行一次耐压和电容量及介质损耗因数测量即可。

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．运输及安装  Transportation and installation

出厂时各段全屏蔽复合绝缘管型母线分别编号，便于现场安装。

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

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

运输时用防震材料包装，防止剧烈震动。

Packed with shockproof material during transportation to prevent severe vibration.

出厂文件包括：产品合格证、试验报告和产品说明书。

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

安装好后应将全屏蔽复合绝缘管型母线的末屏引线可靠接地。

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

should be reliably grounded.

13．订货须知  Ordering instructions

订货时至少需提出下述参数：

At least the following parameters should be provided when ordering:

电气参数：额定电压、额定电流、短时热电流、动稳定电流、绝缘水平。

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

stable current, insulation level.

环境参数：环境温度、海拔高度、污秽等级。

Environmental parameters: ambient temperature, altitude, pollution level.

敷设方式：架空敷设、电缆沟敷设、电缆夹层敷设、竖直敷设、混合敷设。

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

mixed laying.

供货范围：变压器至开关柜连接、开关柜至开关柜连接、开关柜至电抗器连接、发电机至

开关柜连接。

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、放电次数计数器、避雷器在线监测仪、接地钩、相间绝缘隔板、端部

防护罩。

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

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