We are from Hefei Hemei Electronic Technology Co., Ltd. That was established in 2011. As a recognized leading designer and manufacturer in the field of China's split core current transformers and magnetic core materials, it has been dedicated to the research, development, and production of split-type current transformers and high- performance  magnetic  core  materials  for  many  years,  establishing  its  industry  leadership  through professional expertise. We  have  established  two  production  factories  in  China,  with  a  research  and  development  team composed  of  senior  magnetic  material  R&D  engineers,  magnetoelectric  R&D  engineers,  high-voltage electrical experts, and precision structural designers, covering key areas such as magnetoelectric conversion, core material manufacturing processes, power supply systems, and waterproof open-close structures for outdoor and cable trench applications. Leveraging fifteen years of industry expertise and technological accumulation,  Hefei  Hemei  has  become   a   trusted  supplier  for  global  leading  enterprises  including Qualcomm, Huawei,  STMicroelectronics  (ST),  and  China  State  Grid.   Core business and products (customizable R&D and small-batch production available)   1.Customized Core Production Our company manufactures customized magnetic cores including permalloy, silicon steel, and amorphous/nanocrystalline cores, meeting the high-performance magnetic material demands of various industries while providing professional core solutions.   2.Split Core Current Transformer By perfectly combining elastic structure with precision closure technology, it achieves zero The  device  operates  with  low-noise  performance,  featuring  an  IP68  protection  rating  that  ensures exceptional waterproofing and environmental adaptability. It is suitable for outdoor and underground cable applications, equipped with a high-frequency/wide-band current sensor capable of measuring frequencies ranging from 10Hz to 1MHz.   3 .Ultra High Precision AC Measurement Sensor It delivers ultra-high precision AC measurement solutions with 0.01% accuracy, ensuring reliable data  acquisition  in  diverse  complex  environments.  These  solutions  are  widely  used  in  power monitoring and power supply systems.   4.High Performance CT Power Supply Device Our company manufactures high-performance CT power extraction devices with dedicated energy extraction transformers,  featuring  an  open-closing  structure.  The  compact  induction  power   system  delivers  high conversion efficiency, meeting safety requirements for power supply under extreme conditions such as high- current  surges  and  load  switching.  These  devices  are  widely  applicable  for  equipment  power  supply  in medium-high voltage and ultra-high voltage environments, including distribution networks and overhead lines.   Global Market Expansion: Our products have been exported to Canada, the United States, Italy, Brazil, South Korea, France, and other regions, with long-term strategic partnerships established with leading local   enterprises. All  products   comply  with international  standards  including  CE,  UL,  ISO9001,  ISO14001,  and  IATF   16949,  offering  stable performance and competitive pricing. 

From September 10th to 11th, 2025, the 12th Transmission Technology Conference, themed "Smart Transmission, Innovation-Driven Development, Safe and Efficient Operation, and Green Development," was successfully held in Guangzhou. This grand event brought together top industry experts and leading companies to conduct in-depth discussions on hot topics such as the construction of new power systems, transmission technology innovation, and digital operation and maintenance, becoming an important window for understanding future development trends in the transmission field. At this industry event, Hefei Hemei Electronic Technology Co., Ltd., as a leading domestic designer and manufacturer of power signal measurement and electromagnetic induction power extraction technologies, was invited to participate and showcased several core products and solutions, comprehensively demonstrating its technological advantages and innovative applications in intelligent operation and maintenance of transmission lines, attracting widespread attention and exchange from attendees.   Self-powered (CT power supply) technology: The company's switchable current transformer and its power supply solution attracted many attendees to stop and inquire. This technology can provide a stable, maintenance-free power supply for online monitoring and other equipment, solving the industry pain points of difficult power supply and high battery replacement and maintenance costs in remote areas. It is a key technological support for building "maintenance-free" smart power transmission corridors. High-precision sensing and measurement technology: The high-frequency/wideband current sensors and high-precision AC measurement solutions exhibited demonstrate Hemei Electronics' profound expertise in the accurate sensing of electrical signals. These products enable wideband, high-precision measurement of line current and fault current, providing a reliable data foundation for condition monitoring, fault diagnosis, and line protection. They are crucial front-end sensing tools for achieving digital and transparent operation and maintenance of the power grid.

The core advantage of the Split Core Current Transformer is that it can be installed by clamping without disconnecting the circuit under test, and it is compatible with various on-site conductor sizes. Therefore, it is widely used in scenarios requiring rapid deployment, non-stop machine modification, and temporary monitoring. Specifically, it can be divided into the following five categories: 1.Industrial equipment modification and operation and maintenance monitoring, applicable to current monitoring and energy consumption analysis of factory production lines, motors, frequency converters, air compressors, and other equipment. Without the need for downtime or power shutoff, it can be directly clamped onto the busbar or cable, thus avoiding production interruptions. It can monitor equipment load rates in real-time, prevent overload failures, and optimize equipment operation efficiency. Typical scenarios: upgrading the energy consumption system of old factories, and early warning of current anomalies in production line equipment. 2.Commercial buildings and building energy management are core components of the Building Management System (BMS), used for sub-itemized energy metering and energy-saving control. Conduct sub-metering for circuits such as lighting, air conditioning, and elevators in office buildings, shopping malls, and hotels, and calculate the energy consumption proportion of each system. Support the on-demand adjustment of the operating status of electrical equipment to reduce overall operating costs. Typical scenarios: energy consumption audit of commercial complexes, and intelligent power management and control of office buildings. 3.The grid-connected monitoring system for new energy power generation is compatible with grid-connected current monitoring and data acquisition for distributed power generation systems such as photovoltaic and wind power systems. Monitor the inverter output current to ensure stable grid-connected current and compliance with grid access standards. It can be used in conjunction with energy storage devices to achieve precise metering and control of charging and discharging currents. Typical scenarios: grid-connected monitoring of rooftop photovoltaic power stations, and current data acquisition of small wind farms. 4.Temporary inspection of power systems and utilities is used for on-site inspection, fault diagnosis, and temporary metering by power operation and maintenance personnel. Conduct temporary current detection on the outgoing lines of distribution networks and substations to quickly locate the fault point. Replace traditional through-type CTs, shorten maintenance time, and enhance operation and maintenance efficiency. Typical scenarios: fault current monitoring during power emergency repairs, and load survey of distribution networks. 5.The power supply guarantee for data centers and communication base stations focuses on high-reliability power supply scenarios. It monitors the output current of UPS and distribution cabinets to ensure stable operation of equipment. Monitor the power supply current of data center cabinets in real-time to prevent equipment downtime caused by overload. It is suitable for outdoor installation environments of communication base stations, withstanding harsh conditions such as high and low temperatures, humidity, etc. Typical scenarios: power distribution circuit monitoring in large data centers, and power supply current monitoring in 5G base stations.

Merry Christmas and Happy New Year! Happy holidays to everyone! In 2024, we worked hand in hand, through thick and thin, and together we achieved a breakthrough for the company. We hope that in the new year we can go a step further and move towards new victories.   We mainly produce current transformers, energy harvesting CTs, silicon steel cores, Permalloy cores, nanocrystalline cores, magnetic shielding shells, common mode inductors and other products. In the previous year, domestic and foreign customers purchased various products from us and received unanimous praise and reached in-depth cooperation.   At Hemei Electronics, we are pleased to announce that we have officially resumed work and our production is going all out. We assure you that we will comply with the agreed delivery deadlines without delay. If you have any new product needs, please feel free to contact us!

As the traditional Chinese holiday, National Day, approaches, Hemei electronics will be enjoying a week-long break. While this may result in a slight slowdown in our clients' production schedules, we assure you that we will still meet the agreed-upon delivery deadlines.Here's to everyone having a delightful week ahead! Even during our vacation period, please feel free to reach out to our dedicated sales representatives should you have any inquiries. We remain committed to providing prompt and comprehensive assistance to address any concerns you may have. May this festive occasion bring you moments of tranquility and gratitude, allowing you to replenish your energy and nurture personal connections. As we embark on this well-deserved respite, seize the opportunity to explore new horizons and embrace the beauty of life.In the meantime, we will continue to fine-tune our processes, refine our services, and enhance our product offerings, ensuring that we return from our break more determined than ever to exceed your expectations.Once again, our heartfelt wishes for an enjoyable holiday extend to each and every one, near and far. Let the spirit of unity and celebration unite us, as we eagerly anticipate our reunion and strive together towards greater achievements.Happy National Day and a joyous holiday to!