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Winding method of current transformer
Jul 13 , 2020
The current transformer is an instrument that accurately converts a large amount of current on the primary side into a small amount of current on the secondary side according to the magnetic effect of the current. The current transformer is composed of a closed iron core and windings. The number of primary winding turns is very small, and the string is in the route of the current to be accurately ...
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The basic function of current transformer (1)
Jul 13 , 2020
Transformers are generally used in the maintenance process of high-voltage lines. After applying the transformer, the ultra-high voltage can be converted into a low voltage that is not harmful to us, so that we can carry out safety measurements. The key role of the transformer is to reduce the large current of the current loop by a certain proportion to the value that is conducive to accurate meas...
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The basic function of current transformer (2)
Jul 13 , 2020
What is the role of the current transformer? It is a device that transforms a large current into a second small current, and then displays the information on the second small current according to the secondary display information table, and you can understand the measured current. Carefully observe the current in each phase to see if the three-phase electricity is in equilibrium. Then there is ano...
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Voltage transformers and current transformers
Aug 06 , 2020
In order to accurately measure the power consumption in high-voltage and high-current AC circuits, voltage transformers and current transformers are generally used to convert high voltage into low voltage and large current into small current, and configure a moderate meter to use voltage Transformers to carry out accurate measurements. For example, the current, working voltage, output power, frequ...
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The general concept of current transformers
Aug 06 , 2020
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 electric shock accident or common leakage occurs in the p...
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Strong smart grid, Ubiquitous Electric Internet of Things
Aug 06 , 2020
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 based on our own actual situation and t...
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Principle and Application of Hall-effect current sensor
Aug 06 , 2020
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 as current transformers (CT), isolation amplifiers, and Hall effec...
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Error analysis and calculation of current transformer
Aug 06 , 2020
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 path of the current that must be measured. Then today I will give y...
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