Yueqing Heyi Electric Co., Ltd. was established in 2012. It is a young and flexible manufacturer of current transformers and current sensors.
OEM and ODM suppliers
HEYI is a manufacturer of current transformers. After years of efforts, become SIEMENS, SCHNEIDER, FUJI Electric, SoftBank, LG, SAMSUNG and other companies OEM and ODM suppliers. Benefit from strong R & D design team and production team.
Corporate advantage
Superior research and development strength, leading split core current transformer and custom transformer technology. We will update and iterate the latest products every year according to market demand, and the whole industry will follow.
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The company now has two brands of ASCT and HEYI, more than 6 product patents, more than 100 current transformer models, giving customers more choices.
Sensors and DC Shunts at the Heyi 2025 Russia exhibition In 2025, Wenzhou Heyi Electric participated in the Russian Energy Exhibition. At this exhibition, we saw the vast market prospects of Russia. Russia is promoting the development of new energy vehicles. In the past few years, Russia’s electric vehicle market has undergone significant changes. In… Continue reading Sensors and DC Shunts at the Heyi 2025 Russia exhibition
How do switchgear designers choose the appropriate zero-sequence current transformer? The switch cabinet is equipped with a zero-sequence current transformer (applicable to 0.38~66kV). Its characteristics are analyzed and how to choose a suitable zero-sequence current transformer is discussed in order to achieve the best use effect. 1 Overview In medium voltage power… Continue reading How do switchgear designers choose the appropriate zero-sequence current transformer?
How to select the main technical parameters of current transformers – ratio and accuracy Current transformer is a unique transformer designed to convert high current into standard low current. It plays a key role in meters, measuring instruments and relays, not only expanding the measurement range of meters, but also helping to improve the… Continue reading How to select the main technical parameters of current transformers – ratio and accuracy
Operation and maintenance of current transformers Overload operation of current transformer The current transformer can work for a long time at 1.1 times the rated current, but long-term overload operation will affect the measurement accuracy. Due to the increase in magnetic flux density and the saturation of the core, the core will heat up,… Continue reading Operation and maintenance of current transformers
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