About Gaodian Electric Power Co., Ltd
A trusted manufacturer of high-voltage electrical testing equipment serving power utilities, transformer factories, and testing laboratories worldwide.
Who We Are
Gaodian Electric Power Co., Ltd is a Chinese manufacturer specializing in high-voltage electrical test equipment and preventive testing instruments. We design, produce, install, and commission test systems for power transformers, reactors, switchgear, cables, and other electrical apparatus.
Our product portfolio ranges from portable field instruments to fully automated integrated test systems and complete 500 kV high-voltage test centers. We also provide mobile test vehicles, shielded rooms, central control rooms, and artificial rain test rooms as part of a complete test facility.
- High-voltage test equipment R&D and manufacturing
- Preventive testing instruments for power utilities
- Turnkey testing laboratory planning and construction
- On-site installation, training, and maintenance
- Agency services for imported instruments and meters

Our Capabilities
From component sourcing to system delivery, we control quality at every step.
In-House Manufacturing
Modern production workshops with precision machining, winding, and assembly lines.
Engineering Team
Experienced HV engineers and software developers for hardware + software integration.
Quality Assurance
Incoming inspection, process control, factory acceptance testing, and calibration certificates.
Export Experience
Familiar with IEC, IEEE, GB standards and international packaging/shipping requirements.
Project Showcase
Real installations and commissioning of our testing systems at customer sites.

110kV Transformer Test System
On-site commissioning at transformer factory

Reactor Testing System
Installation and calibration at customer site

HV Test Equipment Delivery
Factory acceptance and shipping preparation
Company History
Over 15 years of continuous growth in high-voltage testing technology.
Company Founded
Started R&D and manufacturing of high-voltage test equipment in Nanjing, China.
ISO 9001 Certified
Implemented a full quality management system covering design, production, and service.
Turnkey Lab Division
Launched planning and construction services for 500 kV test centers.
Global Expansion
Equipment exported to Kenya, Egypt, and Southeast Asian markets.
Smart Testing Systems
Released automated transformer and reactor integrated test systems with software control.
