[vc_row][vc_column][vc_column_text] Here mainly introduces the detection method of electric current, find some factors that are easy to be neglected in the design. First consider two different methods: the detection method based on the magnetic field and the detection method based on the shunt. 1. Magnetic field-based detection methods (represented by current transformers and Hall sensors) have many advantages,…
[vc_row][vc_column][vc_column_text]Coil is a more frequently used equipment in power circuits. It is made by winding a transmission line on an insulating tube. The material of the transmission line will endanger the function of the coil. Below I will tell everyone what are the elements that harm coil inductance and what is the function of coil…
First of all, the current transformer is an instrument and equipment that converts a large current into a small current on the secondary side according to the principle of electromagnetic induction. The current transformer is composed of a closed iron core and windings. Its primary winding has very few turns and is stringed in the…
[vc_row][vc_column][vc_column_text] The power factor correction (PFC) circuit and inverter circuit in the telecom rectifier and server power supply unit (PSU) all need to detect the current signal on the high-voltage side to the controller on the low-voltage side, so an isolated current sensor is used. There are many ways to implement isolated current detection, such…
[vc_row][vc_column][vc_column_text] As the country continues to upgrade the power system, the State Grid has also comprehensively promoted the strategic deployment of “three types and two networks”, especially the construction and operation of the “two networks (strong smart grid, Ubiquitous Electric Internet of Things”, Create a new situation for a world-class energy Internet company. We also…
A general current transformer can transform a primary current with a large value into a secondary current with a smaller value according to a certain transformation ratio, so as to play the main purpose of maintenance and accurate measurement. The main function of the zero-sequence current transformer is to protect the power circuit when an…