Principle of current transformer？

The difference between Rogowski coil and ordinary current transformer？   Rogowski coils, also referred to as ROGWSKI COIL, are flexible, hollow, and deformable, lacking an iron core. They operate on the fundamental principles of Faraday’s law of electromagnetic induction, directly generating voltage signals across their secondary winding. One primary advantage of Rogowski coils over conventional […]

2024 HEYI Electrical passed the Factory Audit by “V-Trust” Our fluxgate residual current sensor HYCA series specifically designed for EV charging stations, can replaces KEMET brand sensor. Now we have supplied to a big company in Europe of our HYCA products in bulk for the Project: EVP and Project: EVC200 and so on. In order to […]

What is the role of zero sequence current transformer? When the power system generates zero-sequence ground current, the zero-sequence current transformer is use in conjunction with the relay protection device or signal to activate the device components to achieve protection or monitoring. This allows the zero-sequence current transformer to be use in conjunction with the […]

How to use Rogowski coil?   Firstly, to effectively utilize a Rogowski coil (also known as a Rogowski winding or LR coil) in circuit applications, it’s essential to comprehend its characteristics. These include parameters such as inductance value, resistance value, and other pertinent specifications, typically available in the coil’s specification sheet or product manual. Secondly, […]

How does a current transformer work? The size of the current in power generation, transformation, transmission, distribution and power consumption lines varies greatly, ranging from a few amperes to tens of thousands of amperes. In order to facilitate measurement, protection and control, it needs to be convert into a relatively uniform current. In addition, the […]

How to install current transformer? 1.The construction should be carri out according to the drawings. Additionally, the wiring should be correct, with the numbers on both ends of the wires clearly marked, and the numbering range meeting the requirements of the regulations. Moreover, the secondary circuit wires or cables should all use copper wires. The […]

How to wire current transformer？How to wire current transformer？ A watt-hour meter is installed in the voltage distribution cabinet. Because the current is relatively large, a direct watt-hour meter cannot be used and a transformer needs to be connected. So how to wire the current transformer? What are the wiring methods of current transformers? The […]

Are open-type current transformers good? What are the disadvantages of open-type current transformers? Are open type transformers good? Open current transformers are suitable for indoor installations with rated voltages of 10kV and below. For circuit control, measurement, line reconstruction measurement and protection, etc. Introduction to the structure of open current transformer This current transformer adopts […]

Principle of current transformer   Its working principle is the same as that of a transformer. and its basic structure is also an iron core and primary and secondary windings. The characteristic is that the capacity is small and relatively constant, and it is close to the no-load state during normal operation.   The impedance […]

What is the difference between closed type transformer and split core type?   Closed-type transformers and split-core transformers are two commonly use devices for measuring current in power systems. The main difference between them lies in the internal structure and working principle. Closed type transformer: A closed-type transformer is usually a complete toroidal core with […]

ELECTRICAL HEYI Meet HEYI at American exhibition Show 2024 IEEE PES TRANSMISSION & DISTRIBUTION Exhibits In the fast-paced world of electronic solutions, staying on the cutting edge of innovation is crucial. Heyi Electric, as an industry leader, is proud to announce that it will participate in the American Electrical Exhibition and the 2024 American Power Generation Show. From […]