Products needed for energy construction in Saudi Arabia The Kingdom has launched a total of about 22 renewable energy projects, including 13 new projects in the renewable energy sector currently under development. The total capacity of these 13 new projects is expected to reach 11.4 GW, with a total investment of about 34 billion Saudi […]

What 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. […]

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 […]

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 […]

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, […]

What other application scenarios are there for transformers?   Instrument transformers, an electronic device, play a vital role in the power system. It is not only used to connect the meter for power measurement, but also plays a key role in many aspects. Instrument transformers are mainly divided into two categories: voltage transformers and current […]

Analysis and treatment of heating of current transformer   Causes and hazards of overheating of current transformer   Human-caused failure. One is that due to negligence at work or unclear understanding of the operating principle of the current transformer, the secondary circuit is disconnected or the secondary line of the current transformer is not installed, […]

Analysis of photovoltaic battery energy storage market in Moscow, Russia   In recent years, the photovoltaic battery energy storage market in Moscow, Russia has achieved remarkable development, mainly due to policy support and the market’s increasing attention to renewable energy. Moscow’s photovoltaic battery energy storage system has performed outstandingly in improving energy independence and reducing […]

Current sensors for electric vehicle charging systems in the India   The latest power electronics and conversion solutions are alleviating concerns about range and battery life, thereby increasing consumer acceptance of electric vehicles, while it is also important to improve the efficiency, safety and performance of power conversion systems in an economical way. In terms […]

2025 Power Kazakhstan Exhbition— HEYI contributes to safe electricity use   From October 21st to October 23rd, 2025, Wenzhou HEYI Electric will meet you in Almaty.     Wenzhou HEYI Electric was established in 2012, specializing in the research, design, manufacture and sale of current transformers, current sensors, digital meters, shunts, current transmitters and related accessories, […]

Heyi Electric’s split-core current transformer DP series provides a comprehensive solution for accurate current measurement. With an extended measurement range, spacious window inner diameter, customizable current ratio, and versatile applications in power distribution, industrial systems, energy management, and building management, the DP series provides a reliable, convenient, and adaptable solution for a variety of current measurement needs.

UKCA certified split core current transformer – KCT UKCA (UK Conformity Assurance) certification is a very important qualification. This certification plays a key role when products enter the UK market. It is not only a guarantee of product quality, but also a prerequisite for market access in the UK.   1. Ensure product safety The […]