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One-Station Solutions for the Power Industry

Grandon Technology Limited is a professional manufacturer of electrical equipment and components for switchgear panels up to 40.5kV. With strong R&D capabilities, advanced production systems, and global reach, we deliver reliable power solutions trusted in over 30 countries.

Grandon Technology Factory

About Grandon Technology

A leading manufacturer in the electrical industry, delivering innovation, quality, and reliability across the globe.

Grandon Technology R&D Lab

Professional Experts in Electrical Products

Grandon Technology Limited specializes in the research, development, manufacturing, and trade of electrical equipment and components for switchgear panels up to 40.5kV. We are equipped with a top-ranking R&D team, advanced testing equipment, and a modern management system.

We have established long-term cooperation with several renowned universities and successfully completed numerous scientific research projects, resulting in over ten national patents applied in our products.

  • 40,000 sqm modern standard workshops
  • Over 20,000 panel sets produced annually
  • Customers in over 30 countries worldwide
  • Advanced robot welding and helium leak detection

Our Products

High-quality electrical equipment designed for reliability, safety, and performance in power distribution and transmission systems.

Cubicle Substation

Cubicle Substation

Compact, pre-fabricated substations ideal for urban and industrial power distribution with high safety and reliability.

Instrument Transformer

Instrument Transformer

High-precision current and voltage transformers for accurate measurement and protection in power systems.

Switchgear Panel

Switchgear Panel

Complete medium-voltage switchgear panels up to 40.5kV, designed for indoor and outdoor applications.

Isolation Switch

Isolation Switch

High-voltage disconnectors for safe isolation of circuits during maintenance and repair operations.

Circuit Breaker

Circuit Breaker / Recloser

Automatic protection devices for fault interruption and system restoration in distribution networks.

Ring Main Unit

Ring Main Unit (RMU)

Compact switchgear for secondary distribution networks, offering high reliability and space efficiency.

Gas-Insulated Switchgear

Gas-Insulated Switchgear (GIS)

SF6-insulated switchgear for high-density urban installations with minimal footprint and maximum safety.

Control Panel

Control & Protection Panel

Integrated control systems with relay protection, monitoring, and automation for smart grid applications.

Busbar Trunking System

Busbar Trunking System

High-current power distribution systems for industrial and commercial buildings with low voltage drop.

Advanced Producing & Test Equipment

Cutting-edge technology ensures the highest quality, reliability, and performance in every product we manufacture.

Robot Welding System

Our box bodies are welded using ABB IRB2600 series robots, ensuring superior strength and aesthetics compared to traditional manual welding.

This system is the first in China to apply a visual vision system to the welding of inflatable cabinet products, significantly improving both welding quality and speed.

Helium Leak Detector

We perform dry leak detection on switchgear cabinets using helium mass spectrometry.

The process ensures that the annual air leakage rate of our products remains below 0.1%, guaranteeing long-term gas integrity and performance.

Full-Auto Production Line

Our integrated assembly line completes the main production processes in a streamlined manner, ensuring consistent product quality and high production efficiency.

Robot Welding Production Line

Our Services

From R&D to after-sales support, we provide comprehensive services to meet your electrical infrastructure needs.

R&D Innovation

Continuous innovation through collaboration with universities and patented technologies.

Technical Support

24/7 expert assistance for installation, commissioning, and troubleshooting.

After-Sales Service

Global service network with spare parts, maintenance, and training programs.

Data & Downloads

Access product manuals, certifications, CAD drawings, and technical documentation.

40,000+
Square Meters of Workshops
20,000+
Panel Sets Annually
30+
Countries Served
10+
National Patents

Frequently Asked Questions

What is a switchgear panel?

A switchgear panel is an assembly of electrical disconnect switches, fuses, or circuit breakers used to control, protect, and isolate electrical equipment. It plays a critical role in power distribution systems.

What voltage levels do you support?

We manufacture switchgear panels and components up to 40.5kV, suitable for medium-voltage power distribution and transmission applications.

Do you offer custom designs?

Yes, our R&D team supports OEM and ODM projects with customized electrical solutions based on client specifications and international standards.

What certifications do your products have?

Our products comply with IEC, GB, and other international standards. We provide test reports, type test certificates, and quality assurance documentation.

How can I request technical support?

You can contact our technical team via phone or email for immediate assistance. We also offer on-site support and training upon request.

Get in Touch

Reach out to us for product inquiries, technical support, or partnership opportunities.

Contact Information

Phone (Mobile):

+86-18218579204

Office Address:

Flat/RMB 5/F, Gaylord Commercial Building, 114-118 Lockhart Road, Hong Kong

Factory Location:

C Block, 64#, Long Wuo 2 Road, Long Tian, Pingshan District, Shenzhen, China

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