Certificate of Conformity (CE-RoHS), Attestation of Conformity (TÜV SÜD), DECLARATION OF CONFORMITY (UKCA), Attestation of Compliance (RoHS), Low Voltage Directive Attestation of Conformity, Declaration of Conformity (CE-LVD), RoHS Test Report, Quality Management System Certificate (ISO 9001), Type Test Report, VERIFICATION OF CONFORMITY (EMC), VERIFICATION OF CONFORMITY, CE-LVD Certificate, Metrological Verification Certificate, Verification Certificate, Calibration Certificate, Certificate of Conformity, RoHS Verification Report, IP65 Test Report
Established in 2012, HEYI is a dynamic and flexible manufacturer specializing in advanced Current Transformers (CT) and Current Sensors. We stand at the forefront of the industry through relentless R&D and a deep commitment to bespoke, customized solutions that meet the evolving demands of the global energy landscape
Driven by market trends, our latest breakthroughs include:
EV Charging Safety: AC/DC Leakage Current Sensors specifically engineered for EV charging piles
Utility Infrastructure: Outdoor Split-core CTs designed for robust utility distribution transformer monitoring across global grids.
Global Partnership & Trust] Our engineering excellence is trusted by global technology giants and utilities, including Siemens, Schneider Electric, LG, Samsung, and SoftBank, as well as major national telecom operators and utility providers worldwide.