About Daulma Electric
Precision Instrument Transformers, Engineered for Global Power Systems
Daulma Electric (Zhejiang Daulma Electrical Technology Co., Ltd.) is a specialized manufacturer of current transformers (CT), voltage transformers (VT/PT), combined instrument transformers and high-voltage metering devices. Since 2012, we have delivered dependable metering, monitoring and protection solutions to utilities, EPC contractors, switchgear builders and industrial customers around the world.
Headquartered in Wenzhou — the heart of China’s electrical equipment manufacturing cluster — Daulma Electric operates a 9,000 m² production base with a team of 168 professionals and advanced manufacturing and testing facilities. Every product is built under an ISO 9001 quality management system, engineered to IEC and GB standards, with CE certification available for export projects.
Built to International Standards
Our instrument transformers cover a complete voltage spectrum from low-voltage installations up to 6–110 kV high-voltage systems. Each unit is designed and tested in line with the IEC 61869 / IEC 60044 series and GB standards, meeting the accuracy classes, rated burdens and insulation levels demanded by modern power networks. Rigorous incoming inspection, in-process control and routine testing ensure stable accuracy and reliable insulation throughout the service life of every transformer.
Customization for Power Projects
Every grid has its own specifications. Our engineering team works directly with utilities, switchgear builders and EPC contractors, adapting ratio, accuracy class, burden, insulation level, mounting style, terminal arrangement and enclosure design to real project conditions — including fully non-standard products for special environments. OEM and ODM services are delivered with fast engineering response and dependable lead times.
