2023-10-24
Precautions for the use of protective current transformers
The protective current transformer features a novel structure, elegant appearance, easy installation, compact size, lightweight, high accuracy, and large capacity. The housing is made of flame-retardant and heat-resistant 140°C imported polycarbonate through injection molding. The iron core is wound with oriented cold···
MORE
2023-10-24
Difference between current transformer and voltage transform···
Micro transformers are categorized into micro current transformers (including micro current converters) and micro voltage transformers. They are equipment in the power industry, commonly used in various electrical instruments for measurement and protection purposes. Compared to conventional transformers, micro transfor···
MORE
2023-10-24
Protection principle of zero-sequence current transformer
The zero-sequence current transformer is used in conjunction with relay protection devices or signals when generating zero-sequence grounding current in the power system, enabling the device components to actuate and achieve protection or monitoring.For the specific application of zero-sequence current protection, a cu···
MORE
2023-10-24
How does a high-frequency current transformer detect partial···
The high-frequency current transformer is a sensor that can be widely applied to the partial discharge detection of various high-voltage electrical equipment such as transformers, cables, switchgear cabinets, GIS, generators, PT cabinets, and circuit breakers. It can be installed on the grounding wire of cable input bu···
MORE
2023-10-24
Built-in protection function of precision current transforme···
The capacitive voltage divider of the voltage transformer is equipped with a gap protection between its ground terminal and the tail end. When the capacitor fails, a certain degree of high voltage will be generated at the tail end of the capacitor as a gap protection measure. The device can not only protect the voltage···
MORE
2023-10-24
Why should one end of the current transformer be grounded
When it comes to current transformers, I believe everyone is familiar with them. Their main function is to convert high values to low values, making them suitable for measuring instruments and relays. The commonly used secondary rated current is 5A. So here's the question: why does one end of the current transforme···
MORE
2023-10-24
Selection of voltage transformer
The voltage transformer is a crucial component of the power distribution system. The rational selection of this product is also crucial to the operational status of the entire power system. The selection of voltage transformers is a must-understand issue for us in the power industry. There are various models and types ···
MORE
2023-10-24
Functional characteristics of open-close current transformer
The open-close current transformer adopts a high-strength PVC shell and a fully cast busbar structure. The transformer is directly clamped onto the cable with three rubber rings integrated with the cable. The transformer core is made of high-quality silicon steel sheets, and the secondary conductors are evenly wound ar···
MORE
2023-10-24
Use of current transformer
1) The wiring of current transformers should adhere to the series connection principle: that is, the primary winding should be connected in series with the circuit being measured, while the secondary winding should be connected in series with all instrument loads2) Choose appropriate variations according to the magnitu···
MORE
2023-10-24
Operating principle of protective current transformer
Protective current transformers are generally used in relay protection circuits where multiple busbars pass through. They are developed to detect short-circuit faults for the protection system, featuring different accuracy levels and accuracy limit factors, and can be extended to accommodate different hole sizes. They ···
MORE