Inner Cone Plug-In Termination Manufacturer

Анонца Inner Cone Plug-In Termination manufacturer provides specialized cable accessories for connecting high-voltage power cables with GIS, трансформаторы, распределительное устройство, and other electrical equipment. The technology uses a compact plug-in interface and a premoulded stress cone to control the electrical field around the cable insulation.

Compared with conventional cable terminations, the inner cone design offers a compact connection structure. Поэтому, it works particularly well in substations where installation space remains limited. Кроме того, many modern designs use dry insulation technology, which simplifies installation and reduces the need for liquid insulating media.

Inner cone plug-in technology can serve medium-voltage, высоковольтный, and extra-high-voltage applications. Depending on the manufacturer and product design, available voltage classes can range from around 10 кВ до 500 кВ.

What Is an Inner Cone Plug-In Termination?

Анонца Inner Cone Plug-In Termination connects a power cable to an electrical apparatus through an inner cone bushing. The system normally includes a stress cone, conductive contact, insulation interface, sealing components, and mechanical pressure components.

The stress cone plays a critical role in electrical field control. It distributes electrical stress around the cable insulation and reduces the concentration of electric field at the end of the semiconductor screen.

Во время установки, the cable termination enters the corresponding bushing. The interface then creates a controlled electrical connection between the cable and the equipment.

Как результат, inner cone technology can provide a compact solution for:

• GIS switchgear
• C-GIS switchgear
• Power transformers
• Gas-insulated substations
• High-voltage switchgear
• Подстанции возобновляемой энергии
• Offshore wind power systems
• Подземные системы передачи
• Железнодорожные энергосистемы

The bushing interface must match the termination precisely. Следовательно, engineers should confirm the interface dimensions before selecting an Inner Cone Plug-In Termination manufacturer.

Inner Cone Plug-In Termination Voltage Levels

Voltage rating represents one of the most important selection criteria. Однако, customers should distinguish between the cable’s nominal voltage and the equipment’s maximum voltage.

The following list covers common or potentially applicable voltage levels from 10 кВ до 500 кВ.

This table includes commonly used nominal voltages and equipment classes. Тем не менее, not every voltage level represents a standard inner cone product.

Например, some manufacturers offer inner cone systems up to 52 кВ, while other product families cover higher voltage classes such as 72.5 кВ, 145 кВ, 245 кВ, or beyond. Поэтому, engineers should evaluate each project according to the actual cable and bushing interface.

10kV to 52kV Inner Cone Plug-In Termination

The 10 кВ до 52 kV range represents an important application area for plug-in cable accessories.

Common cable voltage ratings include:

• 6/10 кВ
• 8.7/15 кВ
• 12/20 кВ
• 18/30 кВ
• 19/33 кВ
• 26/35 кВ

At these voltage levels, manufacturers commonly use premoulded silicone rubber stress cones. Silicone provides good electrical insulation and maintains suitable interface pressure over a wide operating temperature range.

Более того, the compact plug-in structure allows engineers to install cable connections inside switchgear or transformer compartments with limited space.

Для 10 кВ, 20 кВ, 24 кВ, 30 кВ, 33 кВ, и 35 kV systems, the manufacturer normally selects the termination according to the cable insulation diameter and conductor cross-section.

Поэтому, customers should provide complete cable dimensions rather than only the voltage rating.

66kV to 145kV Inner Cone Plug-In Termination

The 66 кВ до 145 kV range enters the high-voltage cable accessory market.

Typical voltage levels include 66 кВ, 69 кВ, 72.5 кВ, 90 кВ, 110 кВ, 115 кВ, 126 кВ, 132 кВ, 138 кВ, и 145 кВ.

At these voltage levels, electric field control becomes increasingly important. The manufacturer must carefully coordinate the stress cone geometry with the XLPE insulation, semiconductor screen, and bushing interface.

Например, а 110 kV or 132 kV cable termination cannot simply use the same structure as a 20 kV termination. Higher operating voltage requires greater insulation capability and more precise field grading.

Кроме того, the termination must match the GIS or transformer bushing mechanically and electrically.

МЭК 62271-209 provides important requirements for cable connections between high-voltage switchgear and cables. Следовательно, customers should check the applicable interface standard before placing an order.

170kV to 245kV Inner Cone Plug-In Termination

The 170 кВ до 245 kV range covers major transmission applications.

Общие классы напряжения включают в себя:

• 170 кВ
• 220 кВ
• 230 кВ
• 245 кВ

Among these values, 245 kV represents an important IEC equipment voltage class.

A high-voltage inner cone termination requires careful control of the interface pressure. The stress cone must also maintain stable electrical performance throughout the service life of the cable system.

Более того, the manufacturer should evaluate partial discharge performance, AC withstand voltage, lightning impulse withstand voltage, and thermal characteristics.

For a 220 kV or 230 kV project, the customer should therefore provide the cable construction, размер проводника, толщина изоляции, insulation diameter, and GIS bushing information.

This information allows the Inner Cone Plug-In Termination manufacturer to select the correct interface and termination dimensions.

275kV to 500kV Inner Cone Plug-In Termination

Applications above 245 kV belong to the extra-high-voltage transmission field.

Potential project voltage levels include 275 кВ, 300 кВ, 330 кВ, 345 кВ, 362 кВ, 400 кВ, 420 кВ, и 500 кВ.

At these voltage levels, the termination design becomes considerably more demanding. Engineers must consider the complete electrical and mechanical system rather than the termination alone.

Important design parameters include:

• Cable conductor diameter
• Сечение проводника
• XLPE insulation thickness
• Cable insulation diameter
• Semiconductor screen
• Stress cone geometry
• Electric field distribution
• Interface pressure
• Частичная разрядка
• AC withstand voltage
• Выдерживаемое напряжение грозового импульса
• Switching impulse withstand voltage
• Short-circuit performance
• Тепловые характеристики
• Mechanical interface dimensions

А 500 kV cable system requires particularly careful engineering. The termination must work together with the cable, GIS or transformer bushing, grounding system, и среда установки.

Поэтому, а 500 kV Inner Cone Plug-In Termination should normally involve project-specific engineering and testing. Customers should not select the product only by matching the nominal voltage.

Why Choose an Inner Cone Plug-In Termination?

The compact design provides one of the main advantages of inner cone technology.

Первый, the plug-in connection can save installation space. This feature becomes valuable in GIS substations and compact transformer installations.

Второй, many designs use dry-type insulation. Поэтому, the installation process does not require oil-filled cable connection systems.

Третий, the premoulded stress cone provides controlled electrical field distribution. This design helps maintain reliable insulation performance around the cable termination area.

Кроме того, a plug-in connection can simplify equipment connection and future maintenance when the equipment design allows removal of the cable termination.

Однако, the installation team must follow the manufacturer’s instructions carefully. Cable preparation, semiconductor removal, stress cone positioning, contact installation, and interface cleaning all affect final performance.

How to Select an Inner Cone Plug-In Termination Manufacturer

Customers should consider several technical factors when selecting an Inner Cone Plug-In Termination manufacturer.

1. Номинальное напряжение

Confirm the cable nominal voltage and equipment maximum voltage. These two values do not always have the same numerical value.

2. Cable Conductor Size

The conductor cross-section directly affects the termination contact and mechanical design.

Typical conductor sizes can range from small medium-voltage conductors to large transmission cable conductors.

3. Cable Insulation Diameter

The insulation diameter represents one of the most important dimensional parameters. A termination designed for one cable diameter may not fit another cable with the same nominal voltage.

4. Bushing Interface

The inner cone termination must match the corresponding GIS or transformer bushing.

Поэтому, customers should provide the bushing type, interface dimensions, and relevant technical drawings whenever possible.

5. Требования к тестированию

A qualified manufacturer should provide relevant test documentation. Depending on the voltage class, the project may require partial discharge testing, Испытание на устойчивость к переменному току, impulse testing, thermal testing, and other verification.

6. Поддержка установки

A reliable manufacturer should also provide installation instructions and technical support.

For large transmission projects, installation training can further reduce the risk of incorrect cable preparation.

Inner Cone Plug-In Termination Manufacturer for Global Markets

Different countries use different transmission and distribution voltage systems. Поэтому, an international manufacturer needs to understand multiple voltage standards.

For medium-voltage applications, customers may request 10 кВ, 11 кВ, 12 кВ, 15 кВ, 20 кВ, 22 кВ, 24 кВ, 30 кВ, 33 кВ, 35 кВ, или 36 kV systems.

North American projects may use 15 кВ, 25 кВ, 35 кВ, 69 кВ, 115 кВ, 138 кВ, 230 кВ, или 345 kV systems.

Тем временем, IEC-based transmission networks commonly use equipment classes such as 72.5 кВ, 145 кВ, 170 кВ, 245 кВ, 362 кВ, и 420 кВ.

Extra-high-voltage projects may require 400 кВ, 500 кВ, or other project-specific voltage levels.

Как результат, an experienced Inner Cone Plug-In Termination manufacturer should evaluate the complete project specification before recommending a product.

Dosense Cable as an Inner Cone Plug-In Termination Manufacturer

Dosense Cable focuses on power cable systems and cable accessories for medium-voltage, высоковольтный, and extra-high-voltage applications.

As an Inner Cone Plug-In Termination manufacturer, Dosense Cable can develop cable termination solutions according to voltage level, размер проводника, insulation diameter, cable construction, GIS interface, transformer interface, and project requirements.

For a new project, customers can provide the following information:

• Cable voltage
• Материал проводника
• Сечение проводника
• Тип изоляции кабеля
• Insulation diameter
• Толщина изоляции
• Cable screen structure
• GIS or transformer bushing type
• Номинальный ток
• Среда установки
• Required test standards

With these parameters, the manufacturer can determine the appropriate inner cone design and provide a technical proposal.

Анонца Inner Cone Plug-In Termination offers a compact and reliable connection between high-voltage cables and electrical equipment. From 10 kV medium-voltage systems to 500 kV extra-high-voltage transmission projects, different voltage classes require different insulation systems, interfaces, stress control structures, and testing procedures.

По этой причине, selecting the right Inner Cone Plug-In Termination manufacturer requires more than checking the voltage rating. Cable dimensions, bushing interfaces, электрические требования, mechanical conditions, and applicable standards should all receive careful consideration.

Dosense Cable can work with customers to develop suitable cable termination solutions for specific voltage levels and equipment interfaces.