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Current Transformer Structure
Feb 20 , 2020
Current transformer is mainly composed of a primary winding,a secondary winding and an iron core, and there is insulation among the primary, secondary and iron cores. In order to improve the accuracy of the current transformer, the error of the current transformer is generally compensated.In addition to the above-mentioned primary and secondary windings and cores, some also wound auxiliary coils o...
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Several basic concepts about accuracy and linearity
May 21 , 2020
Before talking about accuracy and linearity, let us talk about the concepts of several errors: 1. Absolute error: the difference between the measured value and the ideal value; 2. Relative error: the ratio of the absolute error of the measured point to the ideal value of the measured point; 3. Reference error: the ratio of the absolute error of the measured point to the reference value (range); 4....
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What is the effect of current transformer in open circuit condition
May 23 , 2020
The current transformer, CT, has fewer primary winding turns. When using, the primary winding is connected in series in the circuit under test, and the secondary winding has more turns. It is used in series with the current coils of measuring instruments and relays. ,So the CT is close to short circuit during normal operation. The magnitude of the CT secondary current is determined by the primary ...
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How to DIY your home energy monitor with ZENTAR CT?
May 25 , 2020
1.What you need to buy? Split core current transformer from Zentar(CT313@100A) Mircocontroller Display Resistors Capacitors Protoboards Headphone jacks 2.Design a case by one-time 3D printer 3.Design a system to ingest data from energy monitors 4.Archiving data 5.Calculate the consumption in total 6.Arduino sofeware 7.Install current transformer 8.Expose data 9.Develop app 10.Read the datas and en...
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Choose a good DC immunity current transformer cores
Jun 09 , 2020
DC immunity current transformer Applications Electronic electricity meter Product Features 1 S type closed-loop magnetic circuit: low sensitivity to interference sources, usually no shielding requirements. 2 Working principle of electromagnetic conversion, no semiconductor device: High reliability, only few additional circuits are needed 3 Simple assembly with only a few components: low assembly c...
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Realization of current detection in automobile electronic system
Aug 12 , 2020
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, such as good isolatio...
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The future development direction of electronic transformers
Aug 12 , 2020
According to media reports, the future research and development directions of electronic transformers include passive sensing, structural combination, functional reuse, and component standardization. Passive sensing: Due to the technical advantages of passive sensing methods, independent ECT sensing components will tend to be passive. This includes active sensors that will be self-powered by getti...
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Let's take a look at the difference between these two transformers
Sep 17 , 2020
The general mutual-inductance watt-hour meter and the high-voltage watt-hour meter of the three-phase watt-hour meter must be connected to a current transformer or a voltage transformer. This article mainly introduces you in detail what are voltage transformers and current transformers and What is the difference between these two transformers. 1. Voltage transformer The working principle of electr...
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