Power Cables Manufacturers

Power Grid Transmission & Transformation Cables from Wuxi Henghui Cable

Wuxi Henghui Cable Co., Ltd. is a China-based manufacturer specialising in the research, development, production, and sales of wires and cables. Our Power Grid Transmission & Transformation Cables range covers voltages up to 110kV, including XLPE-insulated, PVC-insulated, and overhead insulated types. These cables are engineered for utility substations, urban distribution networks, rural grid upgrades, and industrial power transmission where reliability and long-term performance are critical.

From raw material intake to finished product delivery, every metre undergoes rigorous checks for electrical conductivity, insulation integrity, mechanical strength, and durability. Our manufacturing base in Yixing, Jiangsu Province, operates two production plants and nine specialised workshops, supported by a dedicated R&D centre and a quality assurance team.

Our Power Grid Cable Range

We supply a comprehensive portfolio of transmission and transformation cables, each designed for specific voltage levels, installation environments, and performance requirements. The table below outlines our main product families and their typical applications.

Application Fit and Engineering Considerations

Power grid cables operate in demanding environments—from high-altitude corridors and coastal salt-spray zones to densely populated urban areas where underground installation is mandatory. Our range addresses these conditions through material selection, insulation design, and mechanical protection options.

• Voltage class: Low-voltage (0.6/1kV, 1.8/3kV), medium-voltage (6-35kV), and high-voltage (66-110kV) cables cover distribution and transmission segments.
• Conductor material: Copper, aluminium, or aluminium alloy conductors are available in Class 1, 2, or 5 stranding to match current-carrying and mechanical requirements.
• Insulation: XLPE for high thermal endurance (90°C continuous, 250°C short-circuit) and PVC for general-purpose applications (70°C continuous, 160°C short-circuit).
• Armouring and shielding: Options include steel tape, steel wire, aluminium tape, copper tape, and copper wire to suit direct burial, duct, tray, or overhead installation.
• Special performance: Flame retardant (A/B/C grade), fire resistant, low smoke halogen-free, termite-proof, rodent-proof, UV-resistant, and oil-resistant variants.

For overhead lines, we supply 1kV and 10kV overhead insulated cables and steel-core reinforced aluminium overhead insulated cables. These are designed for urban and rural grid construction, offering weather resistance, UV stability, and reduced transmission losses. Our 66-110kV XLPE cables use ultra-smooth conductor and insulation shielding with dry cross-linking technology to achieve low partial discharge levels, suitable for backbone grid transmission and river-crossing or urban underground corridors.

Configuration and Customisation

We manufacture both standard and customised cables. Our engineering team works from customer drawings, samples, or technical specifications to configure the conductor, insulation, screening, armouring, and sheath to the project requirements. Core identification, sheath colour, and drum length can be tailored.

Typical configuration variables include:

• Number of cores: 1, 2, 3, 4, 5, 3+1, 3+2, 4+1
• Cross-sectional area: 1.5 mm² to 630 mm² for low-voltage; larger sizes for medium- and high-voltage
• Conductor class: Class 1, 2, or 5
• Armour type: none, steel tape, steel wire, aluminium tape, aluminium wire
• Outer sheath: PVC, PE, or halogen-free low-smoke flame-retardant compound
• Special properties: flame retardant, fire resistant, termite/rodent proof, UV resistant

Quality Assurance and Manufacturing Capability

Our quality management system is certified to ISO 9001, ISO 14001, and ISO 45001. We operate a MES (Manufacturing Execution System) for end-to-end digital control from raw materials to finished products. The production process includes CCV cross-linking lines, online deviation monitoring, and comprehensive testing for electrical, mechanical, and thermal performance.

With over 20 production lines and an annual output exceeding 50,000 kilometres, we can handle large project volumes while maintaining consistent quality. Our R&D team includes more than 30 senior engineers, and our quality assurance team has over 20 professionals. We are also recognised as a Jiangsu Provincial Green Factory and hold carbon footprint certification.

Installation, Maintenance, and Support

We provide installation guidelines covering minimum bending radius, pulling tension, and ambient temperature limits. For example, XLPE-insulated cables require a minimum bending radius of 20 times the outer diameter during installation (single-core unarmoured) and 15 times after installation. PVC-insulated cables have similar requirements. Our documentation includes drum schedules, test reports, and handling instructions.

After-sales support includes a professional team that follows up on customer satisfaction and assists with technical queries. We offer a one-year product warranty and can supply spare parts and technical guidance as needed.

Information We Use to Configure Your Solution

To prepare an accurate quotation and configuration, we need the following project inputs:

• Voltage level and system frequency
• Conductor material and cross-sectional area
• Number of cores and core identification requirements
• Insulation type (XLPE, PVC, or other)
• Armouring and shielding requirements
• Installation method (direct burial, duct, tray, overhead)
• Special performance needs (flame retardant, fire resistant, etc.)
• Quantity and drum length
• Applicable standards or project specifications
• Delivery location and timeline

Providing these details allows us to select the optimal design, confirm compliance with relevant standards, and deliver a proposal that matches your project requirements.

Frequently Asked Questions

What voltage levels do your power grid cables cover?

We manufacture cables from 0.6/1kV up to 110kV, including low-voltage, medium-voltage, and high-voltage XLPE and PVC insulated types.

Can you produce cables to custom specifications?

Yes. We develop and manufacture products based on customer-provided drawings, samples, or technical requirements, including custom conductor sizes, core counts, and sheath materials.

What is your production capacity and lead time?

Our annual output exceeds 50,000 kilometres. Standard delivery time is approximately 7 to 10 days, depending on order quantity and configuration.

Do you provide test certificates and quality documentation?

Yes. Each order includes routine test reports and relevant quality documentation. We can also provide third-party inspection certificates upon request.

What is the minimum order quantity?

The minimum order quantity varies by product. Most cables have a minimum order of 200 metres.

How do you handle after-sales service and warranty?

We offer a one-year warranty and have a professional after-sales team that provides support from pre-sales consultation to post-delivery follow-up.