内锥形绝缘塞
第一部分 产品概述
内锥绝缘塞 内锥式绝缘密封件是专为10kV/35kV中高压配电系统设计的。它采用内锥插拔结构，可直接与1#/2#/3#内锥绝缘套管配套使用，用于密封未使用的内锥接口，实现绝缘隔离、密封防护和安全接地。它能有效防止因裸露接口而引起的触电和闪络风险，是配电设备接口的关键安全防护附件。
第二部分 产品特性
电气和绝缘性能
Manufactured via integral injection molding using high-purity silicone rubber with no seams or air gaps, providing excellent insulation performance capable of withstanding rated voltages and short-term overvoltages in 10kV/35kV systems, with sufficient insulation margin and partial discharge level ≤10pC (at 1.5U₀).
An integrated electric field optimization structure uniformly distributes the electric field at the interface, effectively suppressing partial discharge. Long-term operation presents no risk of electrical erosion or breakdown, ensuring stable and reliable insulation performance.
An integrated grounding insert provides reliable grounding, effectively dissipating interface-induced voltages and fault currents to enhance system safety.
The insulating surface is treated using a specialized process to achieve high surface resistivity and strong hydrophobicity, effectively preventing surface flashover caused by condensation or contamination, and improving insulation reliability in harsh environments.
结构与安全特性
Standardized inner taper plug-in/pull-out interface design strictly conforms to GB/T 12706 and IEC 60840 standards, offering universal interchangeability with 1#/2#/3# inner taper insulating sockets with strong compatibility, adapting to distribution equipment interfaces of various specifications.
The one-piece structural design allows direct insertion into the mating socket to achieve interface insulation sealing — no additional tools are required, installation is straightforward, and live-line operation is possible.
Anti-misinsertion and anti-misconnection design ensures interface dimensions are uniquely matched, permitting connection only to the corresponding specification socket to prevent cross-use of accessories of different specifications. An integrated positioning lock structure prevents loosening and disengagement after installation.
The fully insulated, touchable structure features high outer insulation strength, allowing the housing to be touched directly during operation without risk of electric shock, ensuring the safety of operations and maintenance personnel.
环境和耐候性性能
Excellent weather resistance adaptable to wide-temperature environments from -40°C to +90°C, with no degradation in rubber elasticity or insulation performance at high or low temperatures, and no risk of cracking or embrittlement, suitable for both outdoor and indoor applications.
Moisture-proof, waterproof, pollution-resistant, and salt-fog resistant with IP67 protection rating, enabling long-term stable operation in harsh environments including humid, dusty, and salt-fog conditions, resistant to rain and condensation ingress.
抗老化、抗紫外线、抗臭氧腐蚀，使用寿命超过30年，免维护运行，降低长期运营和维护成本。
机械和兼容性特性
High mechanical strength with impact and vibration resistance capable of withstanding mechanical stresses during transportation, installation, and operation, with no risk of deformation or damage, and a seismic resistance rating of Grade 8.
Available in three sizes — 1#/2#/3# — compatible with inner taper insulating sockets of different voltage and current ratings, offering broad versatility.
Modular design allows individual plug-in/pull-out replacement; interface sealing or opening can be performed without de-energization, significantly improving operations and maintenance efficiency and reducing outage losses.
第三部分 技术参数
| 参数类别 | 物品 | 技术规格 |
| Applicable System Parameters | 额定系统电压 (Un) | 10kV/35kV |
| 额定电压 (Ue) | 12kV/35kV | |
| 最大工作电压 (Um) | 17.5kV/40.5kV | |
| 额定频率 (fn) | 50赫兹/60赫兹 | |
| 工频耐压 | 42kV/5min (12kV), 95kV/5min (35kV), no breakdown, no flashover | |
| 雷电冲击耐受电压 | 95kV (12kV peak), 200kV (35kV peak), no breakdown, no flashover | |
| 局部放电水平 | ≤10pC (在1.5U₀时) | |
| 结构和材料参数 | 主体材料 | EPDM ethylene propylene diene monomer rubber (insulating layer); tin-plated copper/aluminum (grounding insert) |
| 防护等级 | IP67 | |
| 接口标准 | Inner taper interface conforming to GB/T 12706 and IEC 60840 standards | |
| | Size Series | 1#, 2#, 3# (compatible with sockets of different voltage/current ratings) | |
| | Mating Sockets | 1#/2#/3# inner taper insulating sockets | |
| 环境参数 | 适用高度 | ≤2000米（可高海拔定制） |
| 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） | |
| 抗震等级 | 八年级 | |
| 适用标准 | GB/T 12706, IEC 60840, GB/T 11022, DL/T 404 |
Section IV. Scope of Application
Applicable voltage levels: 10kV/35kV AC medium- and high-voltage power distribution systems, compatible with distribution equipment having a maximum operating voltage of 17.5kV/40.5kV.
适用设备和场景：
Sealing of unused inner taper insulating socket interfaces in distribution equipment such as 10kV/35kV switchgear, ring main units, and compact substations;
Interface safety protection for urban distribution network cable lines, industrial and mining enterprise distribution systems, and distribution equipment at renewable energy (photovoltaic/wind power) step-up substations;
Interface insulation isolation for distribution equipment in indoor/outdoor distribution rooms, underground utility tunnels, cable tunnels, and other multi-scenario applications.
Functional purpose: To seal unused inner taper interfaces in distribution equipment, achieving insulation isolation, sealing protection, and safety grounding, preventing risks of electric shock, flashover, and moisture ingress caused by exposed interfaces, and ensuring the safe and stable operation of distribution equipment.
第五部分. 操作条件
正常运行条件
海拔：≤2000米；
Ambient temperature: -40°C to +90°C, with equipment operating temperature conforming to relevant standards;
相对湿度：≤100%（无冷凝）；
环境条件：无腐蚀性气体、易燃易爆介质，无剧烈振动或冲击；
Installation method: direct insertion into the mating inner taper insulating socket; both horizontal and vertical installation are acceptable, and the installation space must meet plug-in/pull-out operational clearance requirements.
特殊操作条件（需要定制）
海拔超过2000米；
环境温度超出-40°C至+90°C的范围；
Severe contamination, salt-fog, or chemical corrosion environments;
高振动或高冲击运行条件；
Non-standard inner taper interface specifications;
Special grounding requirements or high pollution class applications.
第六节 安装与维护
安装要求
Before installation, inspect the product appearance for cracks, damage, and voids, and verify the insulating surface is undamaged; confirm that grounding inserts are intact with no corrosion or deformation.
Clean the inner wall of the mating inner taper insulating socket and the plug surface, removing grease, dust, and foreign matter to ensure the interface is dry and clean.
Apply a uniform coat of dedicated silicone grease lubricant to the outer wall of the plug interface to prevent damage to the insulating layer during installation.
Slowly push the plug into the mating socket until fully seated; engage the positioning anti-withdrawal device; after installation, verify there is no looseness or tilting.
After installation, verify that the interface seal is reliable with no risk of air leakage or moisture ingress; perform an insulation resistance test if necessary, and commission only upon satisfactory results.
维护要求
Periodically inspect the plug appearance for cracks, discharge marks, and contamination accumulation; verify that the connection to the socket is secure with no looseness, and that sealing components show no aging or damage.
定期测试绝缘电阻，以确认性能符合要求并及时发现潜在故障。
Clean the plug surface to remove dust and contamination, keeping the insulating surface dry and clean, and avoiding exposure to grease and chemical corrosion.
If abnormalities such as cracks, damage, discharge, or overheating occur on the plug or mating socket, immediately take the unit out of service and replace it; continued operation with known defects is strictly prohibited.
Plug-in/pull-out operations must be performed using dedicated insulating operating tools; bare-hand contact with energized interfaces is strictly prohibited, and all operations must strictly comply with power distribution safety regulations.
第七节. 预防措施
The product must be installed, commissioned, and maintained by qualified electrical personnel holding medium- and high-voltage distribution construction credentials; operation by unqualified personnel is strictly prohibited.
The product must be used only with the corresponding specification of inner taper insulating socket; cross-matching with sockets of different voltage levels or different specifications is strictly prohibited, as this will result in insulation failure and safety incidents.
The plug must not be disassembled or modified without authorization, as this will void the warranty and safety assurance; forced installation or removal using non-dedicated tools is strictly prohibited.
During installation, damage to the insulating surface is strictly prohibited; silicone grease lubricant must be applied uniformly to avoid compromising insulation performance and sealing effectiveness.
During storage, the product must be kept in a dry, ventilated, and cool environment, away from direct sunlight, high temperatures, humidity, and compression; contact with sharp objects that could damage the insulating layer is strictly prohibited.
When performing plug-in/pull-out operations on energized interfaces, all power distribution safety regulations must be strictly observed and adequate safety protective measures must be in place; unauthorized operations are strictly prohibited.
第八节。型号命名
| 型号 designation | 描述 |
| 1#/2#/3# | Size series designator, compatible with inner taper insulating sockets of different voltage and current ratings respectively |
| 内锥形绝缘塞 | Inner taper insulation plug, integrally injection-molded from EPDM rubber, used for insulation sealing and safety protection of inner taper interfaces |
第九条 适用标准与认证
International standard: IEC 60840 “Power cables with extruded insulation and their accessories for rated voltages above 30kV (Um=36kV) up to 150kV (Um=170kV) — Test methods and requirements”;
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” switchgear 和控制设备标准》，DL/T 404 “3.6kV~40.5kV交流金属封闭开关设备和控制设备”；
该产品已通过国家高压电器质量监督检验中心型式试验，符合国家电气安全标准。
X. 售后服务
产品保修期：自制造之日起 18 个月，或自调试之日起 12 个月，以先到者为准；
Free repair or replacement for product quality issues during the warranty period;
提供技术支持、安装指导及定制服务（特殊规格、特殊工况适应）。
文档说明
The technical parameters in this manual are based on standard operating conditions. Special operating conditions require customization based on actual requirements; the product technical agreement and type test report shall prevail.
附录：产品外形图
