About VA-TEK

Company Profile

Shenzhen Feso Automation Technology Co., Ltd. (FESO) is an electrical test equipment manufacturer headquartered in Shenzhen, China. Under the VA-TEK brand, the company designs, develops, and manufactures relay protection test sets, CT/PT analyzers, and high-voltage test instruments for power utilities, testing service companies, EPC contractors, and industrial plants worldwide.

VA-TEK instruments are engineered and produced in-house at our Shenzhen manufacturing and R&D center under a certified ISO 9001 quality management system. Every unit is fully tested and calibrated against traceable reference standards before shipment. From substation commissioning to high-voltage cable testing, VA-TEK equipment is trusted by professionals in more than 40 countries.

The same engineering and manufacturing team also supplies online transformer dissolved gas analysis (DGA) monitoring through our sister brand PAS DGA (pasdga.com), giving customers a single, accountable partner across electrical testing and transformer condition monitoring.

Core Competencies

• In-House Design & Manufacturing: Complete product lifecycle under one roof in Shenzhen — hardware, firmware, software, and calibration
• Relay Protection Testing: Full-featured relay test sets for commissioning and maintenance of protective relays in conventional and hybrid bays
• Instrument Transformers: CT/PT analyzers for accurate ratio, phase, excitation, and burden testing
• High-Voltage Testing: VLF hipot and associated high-voltage test equipment for cable and apparatus withstand testing
• Traceable Calibration: Factory calibration certificates included with every instrument
• Global Support: Engineer-led technical support and authorized service partners worldwide

Corporate Information