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Help CenterPorcelain Insulator Rated for 20 kV and 35 kV High Voltage Transmission Lines
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As a professional manufacturer with ISO9001 certified processes, Jinhua Dika Electrical Equipment Co., Ltd. specializes in producing high-quality, reliable porcelain insulators for global power transmission infrastructure. Our insulators, rated for 20 kV and 35 kV applications, are engineered to ensure stable performance and longevity in demanding environments, supporting the safe and efficient distribution of electricity across continents.
Our porcelain insulators are designed to meet the rigorous demands of high voltage transmission lines. They serve as critical components for electrical isolation and mechanical support, preventing current leakage and ensuring system integrity.
- Superior Dielectric Strength: Manufactured from high-grade electrical porcelain, our insulators offer excellent insulating properties, effectively withstanding the specified voltage ratings under various environmental conditions.
- Exceptional Mechanical Durability: The robust porcelain construction provides high mechanical strength, capable of supporting conductor weight and resisting wind loads, ice accretion, and other mechanical stresses.
- Weather and Corrosion Resistance: The glazed surface of the porcelain sheds water effectively and resists pollution buildup, maintaining performance in humid, coastal, or industrially polluted areas.
- Thermal Stability: Porcelain material exhibits low thermal expansion and excellent resistance to thermal shock, ensuring stable operation across a wide temperature range.
- Long Service Life: With proven durability and resistance to aging, our insulators offer a cost-effective, long-term solution for transmission line projects.
We understand that different projects have unique requirements. Therefore, we offer flexibility in configuration and support. Our team can work with you to provide insulators that match your specific technical drawings and project specifications.
| Feature / Parameter | Description / Value |
| Primary Material | High-Alumina Electrical Porcelain |
| Rated Voltage Class | 20 kV, 35 kV (Other voltages available upon request) |
| Standard Color | Brown Glaze (Other colors like white are optional) |
| Mechanical Failing Load | Customizable based on type (e.g., 70 kN, 120 kN, 160 kN) |
| Creepage Distance | Designed to meet specific pollution level requirements |
| Connection Type | Ball & Socket, Clevis, or other standard fittings |
| Application Environment | Suitable for normal and lightly polluted atmospheres |
Choosing our porcelain insulators brings distinct advantages to your projects. You benefit from a product with a long history of proven reliability in power networks worldwide. The inherent properties of porcelain make it a predictable and stable insulating material. Furthermore, our manufacturing under ISO9001 standards ensures consistent quality and traceability for every unit produced. This translates to reduced maintenance costs, enhanced grid reliability, and a lower total cost of ownership over the insulator's lifespan.
Backed by an annual export value reflecting our global reach across North America, South America, Europe, Asia, Africa, and Oceania, Jinhua Dika has established itself as a trusted supplier in the electrical equipment sector. Our products are shipped from major ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring efficient logistics. With a dedicated team of 11-50 professionals, we combine manufacturing expertise with responsive customer service. We invite you to experience the reliability our 20 kV and 35 kV porcelain insulators can bring to your transmission lines. Contact us today to discuss your requirements, request samples, or receive a detailed quotation.
Frequently Asked Questions (FAQ)
Q1: What are the main advantages of porcelain insulators over composite polymer insulators?
A1: Porcelain insulators offer excellent long-term stability, high resistance to tracking and erosion under UV exposure, and a proven service history of several decades. They are often preferred for their predictable aging characteristics and mechanical robustness.
Q2: Can you provide insulators for voltages other than 20 kV and 35 kV?
A2: Yes. While 20 kV and 35 kV are common ratings, we manufacture porcelain insulators for a range of medium and high voltage applications. Please provide your specific voltage and technical requirements for a customized solution.
Q3: How do I determine the correct mechanical strength (failing load) needed for my line?
A3: The required mechanical strength depends on factors like conductor type, span length, ice/wind load zones, and safety factors defined by your grid standards. Our technical team can assist you in selecting the appropriate rating based on your project data.
Q4: Are your insulators suitable for coastal areas with high salt pollution?
A4: Our standard brown glaze offers good pollution resistance. For severe salt pollution conditions, we can recommend insulators with an extended creepage distance or discuss special glaze formulations to enhance performance.
Q5: What is the typical lead time for an order?
A5: Lead time varies based on order quantity and specifications. For standard products, it is generally shorter. We provide estimated lead times with every quotation and strive to meet project schedules.
Q6: Do you offer testing certificates for the products?
A6: Yes. We can provide routine test reports from our factory. For specific type tests or third-party certification, please discuss your requirements with us in advance, as these may involve additional time and cost.
Q7: What packaging is used for shipment?
A7: We use robust, weather-resistant wooden crates or pallets to ensure the insulators are securely packed and protected during ocean or land transportation, minimizing the risk of transit damage.
Q8: Can you manufacture insulators according to international standards like IEC or ANSI?
A8: Our manufacturing processes are adaptable. We can produce insulators that conform to major international standards such as IEC, ANSI, or other regional specifications. Please provide the standard reference when inquiring.
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