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優聯電纜熔接技術（深圳）有限公司主要提供兩類產品：一類是熱縮電纜終端，適用于低壓至35kV電纜的末端處理及中間接頭，安裝便捷且經濟；另一類是電纜熔接式中間接頭，這是一種將電纜完全“恢復”為原廠狀態的高端技術，主要應用于中高壓系統，以實現更優異的電氣性能和長期可靠性

優聯熔接 · 電纜附件產品介紹

一、 熱縮電纜終端頭（常規型）

該類產品是優聯的常規線纜附件，采用輻照交聯高分子材料制成，通過加熱收縮的方式進行安裝，廣泛適用于低壓至35kV的電纜終端處理。

1. 產品特點

· 性能穩定：具有優良的絕緣性能和抗爬電、耐電痕、耐老化特性。在-55℃至105℃溫度條件下，設計使用壽命超過20年 。

· 電場控制：通過參數控制法（應力管）緩解電場應力集中，均勻改善電場分布，確保運行安全 。

· 防水設計：具備雙應力控制和屏蔽/絕緣一體設計，具有良好的密封防潮性能 。

· 安裝便捷：重量輕，只需加熱收縮即可，無需專用工具。指套通常不加墊管即可收緊，絕緣管分紅、黃、綠、藍、黑直接分相，安裝效率高 。

· 適用范圍廣：廣泛用于電力、石油化工、冶金、鐵路、港口及建筑等領域，適用于交聯電纜或油浸電纜 。

2. 主要電氣參數（以10kV及以下為例）

· 工頻耐壓：0.6/1kV產品可耐受4kV/1min不閃絡；8.7/15kV產品可耐受39kV/5min不擊穿 。

· 局部放電：在15kV（8.7/15kV產品）測試電壓下，無可檢測放電 。

· 運行溫度：正常運行允許溫度為90℃，短路時允許溫度可達250℃ 。

· 執行標準：符合IEC60502、GB/T12706.4標準要求 。

3. 典型規格

· 低壓系列：0.6/1kV，1芯、2芯、3芯、4芯、5芯（如4*16mm?），適用于10-16mm?的規格型，25-50mm?、70-120mm?、150-240mm?、300-400mm? 。

· 高壓系列：10kV、35kV等級，如YJL 3*240mm?熱縮終端 。

規格為1芯、3芯、 型號為：25-50mm?、70-120mm?、150-240mm?、300-400mm?

二、 電纜熔接式中間接頭（高端型）

這是優聯的核心技術產品，區別于傳統的冷縮或熱縮附件。它并非簡單的“套裝”，而是通過恢復電纜本體結構的“熔接”技術，實現與電纜同壽命的中間接頭，主要針對中高壓（10kV-35kV）及重要線路設計。

1. 核心技術優勢

優聯熔接技術旨在解決傳統附件存在的“界面問題”。傳統冷縮/熱縮附件與電纜是兩種介質（硅橡膠/EPDM vs XLPE），存在活動界面和氣隙，容易成為電場的薄弱環節 。

· 無界面熔融技術：將電纜的導體、內半導電層、主絕緣層、外半導電層逐層采用熔融方式恢復，與原電纜材料無縫結合，徹底消除電氣界面，避免氣隙和雜質引發的局部放電 。

· 導體連接：采用放熱焊接技術（分子連接），而非簡單的壓接。焊接處的拉斷力可達本體強度的90%以上，載流能力與導體相等，且接觸電阻極小，不會因大電流沖擊或長期運行而松動老化 。

· 等徑恢復：接頭處恢復為與電纜本體近似的等直徑結構，電場分布與電纜本體完全一致，無需依賴應力錐或應力管來控制電場，電氣穩定性極高 。

· 適應性強：即使在電纜長度不足（如僅剩40cm空間）、高空懸掛或彎曲處等特殊位置，也可制作熔接接頭 。

2. 產品性能優勢對比

性能指標 優聯熔接技術 (YLJ/HMJ) 傳統冷縮/熱縮附件

導體連接 放熱焊接，分子結合，拉斷力≥本體90%  機械壓接，存在接觸電阻，易松動

絕緣界面 熔融結合，無氣隙、無界面，與原電纜一體  介質配裝，存在活動界面，易產生局部放電

電場分布 完全等同于電纜本體，無需應力錐  依賴應力管/錐進行幾何場強控制

防水性能 分層熔融恢復，無縫隙，防水性能好  依靠密封膠和管材收縮，存在滲潮風險

壽命 與原電纜同壽命，免維護（質保可達30年）  一般設計壽命20年，受環境和安裝影響大

3. 應用場景

特別適用于對供電可靠性要求極高的場合，如：· 電網改造項目 · 地鐵、火車站、機場 · 化工、風電等重工業項目 · 高海拔、潮濕或需頻繁拖動電纜的特殊環境

公司信息

優聯電纜熔接技術(深圳)有限公司位于深圳市寶安區，提供電纜熔接頭、防火毯、防爆盒、冷縮電纜附件等全系列產品 。如需進一步技術參數或選型咨詢，建議直接聯系廠家獲取最新資料。

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 performance 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-linked polymer material and installed by heating shrinkage. It is widely suitable for cable terminal treatment from low voltage to 35kV.

 1. Product features

 · Stable performance: it has excellent insulation performance, 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 parameter control method ( stress tube ), uniformly 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 performance.

 · 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, metallurgy, railway, port and construction, etc. It is suitable for cross-linked cables or oil-immersed cables.

 2. Main electrical parameters ( 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 links 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 locations such as insufficient cable length ( e.g. only 40 cm of space left ), hanging at high altitude or bending.

 2. Comparison of product performance advantages

 Performance 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