优联电缆熔接技术（深圳）有限公司主要提供两类产品：一类是热缩电缆终端，适用于低压至35kV电缆的末端处理及中间接头，安装便捷且经济；另一类是电缆熔接式中间接头，这是一种将电缆完全“恢复”为原厂状态的高端技术，主要应用于中高压系统，以实现更优异的电气性能和长期可靠性

优联熔接 · 电缆附件产品介绍

一、 热缩电缆终端头（常规型）

该类产品是优联的常规线缆附件，采用辐照交联高分子材料制成，通过加热收缩的方式进行安装，广泛适用于低压至35kV的电缆终端处理。

1. 产品特点

· 性能稳定：具有优良的绝缘性能和抗爬电、耐电痕、耐老化特性。在-55℃至105℃温度条件下，设计使用寿命超过20年 。

· 电场控制：通过参数控制法（应力管）缓解电场应力集中，均匀改善电场分布，确保运行安全 。

· 防水设计：具备双应力控制和屏蔽/绝缘一体设计，具有良好的密封防潮性能 。

· 安装便捷：重量轻，只需加热收缩即可，无需专用工具。指套通常不加垫管即可收紧，绝缘管分红、黄、绿、蓝、黑直接分相，安装效率高 。

· 适用范围广：广泛用于电力、石油化工、冶金、铁路、港口及建筑等领域，适用于交联电缆或油浸电缆 。

2. 主要电气参数（以10kV及以下为例）

· 工频耐压：0.6/1kV产品可耐受4kV/1min不闪络；8.7/15kV产品可耐受39kV/5min不击穿 。

· 局部放电：在15kV（8.7/15kV产品）测试电压下，无可检测放电 。

· 运行温度：正常运行允许温度为90℃，短路时允许温度可达250℃ 。

· 执行标准：符合IEC60502、GB/T12706.4标准要求 。

3. 典型规格

· 低压系列：0.6/1kV，1芯、2芯、3芯、4芯、5芯（如4*16mm²），适用于10-16mm²的规格型，25-50mm²、70-120mm²、150-240mm²、300-400mm² 。

· 高压系列：10kV、35kV等级，如YJL 3*240mm²热缩终端 。

规格为1芯、3芯、 型号为：25-50mm²、70-120mm²、150-240mm²、300-400mm²

二、 电缆熔接式中间接头（高端型）

这是优联的核心技术产品，区别于传统的冷缩或热缩附件。它并非简单的“套装”，而是通过恢复电缆本体结构的“熔接”技术，实现与电缆同寿命的中间接头，主要针对中高压（10kV-35kV）及重要线路设计。

1. 核心技术优势

优联熔接技术旨在解决传统附件存在的“界面问题”。传统冷缩/热缩附件与电缆是两种介质（硅橡胶/EPDM vs XLPE），存在活动界面和气隙，容易成为电场的薄弱环节 。

· 无界面熔融技术：将电缆的导体、内半导电层、主绝缘层、外半导电层逐层采用熔融方式恢复，与原电缆材料无缝结合，彻底消除电气界面，避免气隙和杂质引发的局部放电 。

· 导体连接：采用放热焊接技术（分子连接），而非简单的压接。焊接处的拉断力可达本体强度的90%以上，载流能力与导体相等，且接触电阻极小，不会因大电流冲击或长期运行而松动老化 。

· 等径恢复：接头处恢复为与电缆本体近似的等直径结构，电场分布与电缆本体完全一致，无需依赖应力锥或应力管来控制电场，电气稳定性极高 。

· 适应性强：即使在电缆长度不足（如仅剩40cm空间）、高空悬挂或弯曲处等特殊位置，也可制作熔接接头 。

2. 产品性能优势对比

性能指标 优联熔接技术 (YLJ/HMJ) 传统冷缩/热缩附件

导体连接 放热焊接，分子结合，拉断力≥本体90%  机械压接，存在接触电阻，易松动

绝缘界面 熔融结合，无气隙、无界面，与原电缆一体  介质配装，存在活动界面，易产生局部放电

电场分布 完全等同于电缆本体，无需应力锥  依赖应力管/锥进行几何场强控制

防水性能 分层熔融恢复，无缝隙，防水性能好  依靠密封胶和管材收缩，存在渗潮风险

寿命 与原电缆同寿命，免维护（质保可达30年）  一般设计寿命20年，受环境和安装影响大

3. 应用场景

特别适用于对供电可靠性要求极高的场合，如：· 电网改造项目 · 地铁、火车站、机场 · 化工、风电等重工业项目 · 高海拔、潮湿或需频繁拖动电缆的特殊环境

公司信息

优联电缆熔接技术(深圳)有限公司位于深圳市宝安区，提供电缆熔接头、防火毯、防爆盒、冷缩电缆附件等全系列产品 。如需进一步技术参数或选型咨询，建议直接联系厂家获取最新资料。

Youlian Cable Fusion Technology ( Shenzhen ) Co., Ltd. mainly provides two types of products: one is heat shrinkable cable terminal, which is suitable for the end treatment and intermediate joint of low-voltage to 35kV cables, and is convenient and economical to install;  The other is the cable fusion type intermediate joint, which is a high-end technology to completely " restore" the cable to its original condition, and is mainly used in medium and high voltage systems to achieve better electrical perbance and long-term reliability

 Introduction of Youlian welding and cable accessories

 I. Heat shrinkable cable terminal ( conventional type )

 This product is a conventional cable accessory of Youlian, which is made of irradiated cross-bed polymer material and installed by heating shrinkage. It is widely suitable for cable terminal treatment from low voltage to 35kV.

 1. Product features

 · Stable perbance: it has excellent insulation perbance, creepage resistance, electric mark resistance and aging resistance.  Designed to last more than 20 years at -55 ° C to 105 ° C.

 · Electric field control: Relieve electric field stress concentration through beter control b ( stress tube ), unibly improve electric field distribution and ensure operation safety.

 · Waterproof design: with dual stress control and integrated shielding / insulation design, it has good sealing and moisture resistance perbance.

 · Easy to install: Light weight, requires only heating and shrinking without special tools.  The finger bushing can be tightened without gasket, and the insulating tube is directly separated into red, yellow, green, blue and black phases, which has high installation efficiency.

 Wide application range: It is widely used in the fields of electric power, petrochemical industry, bllurgy, railway, port and construction, etc. It is suitable for cross-bed cables or oil-immersed cables.

 2. Main electrical beters ( taking 10kV and below as an example )

 · Power frequency withstand voltage: 0.6 / 1kV product can withstand 4kV / 1min without flashover;  8.7 / 15kV product can withstand 39kV / 5min without breakdown.

 · Partial discharge: no detectable discharge at 15 kV ( 8.7 / 15 kV product ) test voltage.

 Operating temperature: The allowable temperature for normal operation is 90 ° C, and the allowable temperature for short circuit can reach 250 ° C.

 · Implementation standard: comply with the requirements of IEC 60502 and GB / T 12706.4.

 3. Typical specification

 Low voltage series: 0.6 / 1kV, 1 core, 2 cores, 3 cores, 4 cores and 5 cores ( such as 4 * 16mm Ω ), suitable for specifications of 10-16mm Ω, 25-50mm Ω, 70-120mm Ω, 150-240mm Ω and 300-400mm Ω.

 · High voltage series: 10kV and 35kV, such as YJL 3 * 240mm thermal shrinkable terminal.

 The specifications are 1-core and 3-core, and the models are: 25-50mm μ m, 70-120mm μ m, 150-240mm μ m, 300-400mm μ m

 II. Cable fusion type intermediate joint ( high-end type )

 This is the core technology product of Youlian, which is different from the traditional cold shrinkable or hot shrinkable accessories.  It is not a simple " package", but realizes the intermediate joint with the same service life as the cable through the " welding" technology of restoring the cable body structure, which is mainly designed for medium and high voltage ( 10kV-35kV ) and important lines.

 1. Core Technology Advantage

 Youlian fusion technology aims to solve the " interface problem" existing in traditional accessories.  Conventional cold-shrink / heat-shrink accessories and cables are two media ( silicone rubber / EPDM vs XLPE ) with active interfaces and air gaps, which can easily become weak bs in the electric field.

 Interface-free melting technology: the conductor, inner semi-conductive layer, main insulating layer and outer semi-conductive layer of the cable are restored by melting layer by layer, which is seamlessly combined with the original cable material to completely eliminate the electrical interface and avoid partial discharge caused by air gap and impurities.

 Conductor connection: Exothermic welding technology ( molecular connection ) is adopted instead of simple crimping.  The tensile strength at the welding part can reach more than 90 % of the body strength, the current-carrying capacity is equal to that of the conductor, and the contact resistance is extremely small, so it will not loosen and age due to large current impact or long-term operation.

 · Equal diameter restoration: the joint is restored to an equal diameter structure similar to the cable body, and the electric field distribution is completely consistent with the cable body. It does not need to rely on stress cone or stress tube to control the electric field, and the electrical stability is extremely high.

 · Strong adaptability: fusion joints can be made even in special bs such as insufficient cable length ( e.g. only 40 cm of space left ), hanging at high altitude or bending.

 2. Comparison of product perbance advantages

 Perbance indicators: (YLJ/HMJ) ( traditional cold / heat shrink accessories

 Exothermic welding of conductor connection, molecular bonding, tensile strength ≥ 90 % mechanical crimping of body, contact resistance and easy loosening

 Insulation interface fusion bonding