屏蔽电缆柔性连接器 （又称欧式肘部柔性电缆 连接器是一种用于中压配电系统的专用组件，可实现设备之间灵活的电气连接。广泛应用于10kV/20kV/35kV欧式环网柜、箱式变电站、电缆分支箱等设备中。
产品概述
The Shielded Flexible Cable Connector is a fully insulated, fully shielded, separable flexible connection component designed specifically for European-style power distribution equipment. It consists of European-style elbow connectors at both ends, a flexible cable in the middle section, and a continuous shielding structure. The assembly enables electrical interconnection between equipment while compensating for installation tolerances, thermal expansion and contraction, and minor vibration through its flexible structure. It serves as a replacement for conventional rigid copper busbar connections, enhancing the safety and reliability of power distribution systems.
Core Features
电气和绝缘性能
Both ends feature European-style elbow connectors manufactured by integral injection molding of ethylene propylene diene monomer (EPDM) rubber, with built-in semi-conductive shielding layers that provide uniform electric field distribution, eliminate the risk of partial discharge, and are compatible with system voltage ratings of 10–35kV.
The intermediate flexible cable uses cross-linked polyethylene (XLPE) insulation, offering superior insulation performance and thermal resistance, capable of withstanding continuous operating current as well as short-circuit current impulses.
The fully shielded structure provides continuous grounding of the shielding layers across both connectors and the cable, eliminating external electric field interference and ensuring stable operation.
Flexibility and Installation Adaptability
The flexible cable is bendable, compensating for installation tolerances, thermal expansion and contraction, and minor vibration between equipment, thereby preventing deformation or damage caused by stress concentration.
Both ends adopt standard interfaces compatible with European-style ring main units, allowing direct plug-in connections without on-site welding or casting, resulting in high installation efficiency.
The modular design allows customization of cable length and phase color coding (e.g., red, green, and yellow for the three phases) based on equipment spacing, accommodating connection requirements across various applications.
Safety and Protection Features
The fully insulated, touchable structure ensures that the connector surface is at ground potential after installation, with no exposed live parts, eliminating the need for additional insulation protection and ensuring the safety of operation and maintenance personnel.
The fully sealed structure provides IP67 protection, effectively preventing the ingress of moisture, dust, and oil contaminants, making it suitable for humid, dusty, and other harsh environments.
Excellent weatherability allows operation across a wide temperature range of -40°C to +90°C with no degradation of insulation performance at extreme temperatures, providing a service life of more than 20 years.
典型应用场景
Ring Main Unit / Compact Substation Interconnection: Provides flexible electrical connections between European-style ring main units and compact substations, compensating for installation tolerances and thermal expansion and contraction.
Cable Junction Box Circuit Extension: Enables flexible connections among multiple circuits within cable junction boxes, replacing conventional rigid copper busbars and reducing the risk of short circuits and electric shock.
Power Distribution System Retrofit and Expansion: Used for flexible interconnection between equipment during renovation of aging distribution systems, eliminating the need for large-scale modification of equipment foundations.
Industrial, Mining, and Coastal Power Distribution: Suitable for equipment interconnection in humid, dusty, and salt-spray environments, offering strong weatherability and reliable operation.
Technical Parameters (Example: 10kV / 630A)
| 参数类别 | 物品 | 规格 |
| 电气参数 | System Voltage Rating | 10kV AC (adaptable to 20kV/35kV) |
| 额定电流 | 630A (customizable to 1250A and other ratings) | |
| 工频耐压 (5分钟) | 42千伏，无击穿 | |
| 雷电冲击耐受电压（峰值） | 95千伏，无击穿 | |
| 局部放电水平 | ≤5pC（在额定电压的1.5倍时） | |
| 结构和材料参数 | 主要材料 | Ethylene Propylene Diene Monomer (EPDM) + Cross-Linked Polyethylene (XLPE) Insulated Cable |
| 防护等级 | IP67 | |
| | Interface Type | Standard European-Style Elbow Connector Interface | |
| 环境参数 | 适用高度 | ≤2000m (high-altitude versions available upon request) |
| 环境温度 | -40°C 至 +90°C (工作温度)；-40°C 至 +70°C (储存温度) | |
| 相对湿度 | ≤100%（无冷凝） | |
| 适用标准 | GB/T 12706, IEC 60840, GB/T 11022 |
安装与维护指南
Installation Guidelines
Before installation, inspect the flexible connector for appearance defects: connectors must be free of cracks and damage; cables must be free of bulges and insulation damage; all accessories must be present.
Clean the equipment busbar interface to remove oil and dust, apply silicone grease evenly, and ensure smooth plug-in action and reliable contact.
Adjust the bending of the flexible connector according to the equipment spacing, avoiding excessive bending or twisting, and ensure the cable bending radius meets specified requirements.
After installation, verify grounding connections to ensure reliable grounding of both connector and cable shielding layers, achieving the “touchable” characteristic.
维护指南
Periodically inspect the flexible connector for appearance defects: connectors must be free of cracks, damage, and discharge marks; cables must show no signs of insulation aging, cracking, or deformation.
Periodically test the insulation resistance of the flexible connector to verify performance compliance and identify potential hazards in a timely manner.
Clean connector surfaces to remove accumulated dust and contaminants, preventing oil and chemical substances from corroding the rubber housing and cable insulation.
If abnormalities such as cracks, damage, discharge, or insulation resistance exceeding specified limits are detected, the flexible connector must be replaced immediately. Operation with known defects is strictly prohibited.
适用的标准和认证
International Standard: IEC 60840 — Test Methods and Requirements for Power Cables with Extruded Insulation and Their Accessories for Rated Voltages above 30kV (Um=36kV) up to 150kV (Um=170kV)
国家标准：GB/T 12706 — 额定电压1kV（Um=1.2kV）至35kV（Um=40.5kV）挤塑绝缘电力电缆及附件；GB/T 11022 — 高压开关设备和控制设备通用技术条件 开关设备 和控制设备标准
该产品已通过国家电线电缆质量监督检验中心型式试验，符合国家电力行业标准。
附录：产品外形图
