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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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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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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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Briefly description of zero phase current transformer
Jul 10 , 2020
The general current transformer can convert the primary current with a large value to a secondary current with a smaller value according to a certain transformation ratio, so that it can be used for maintenance and accurate measurement. The main function of the zero-sequence current transformer is to protect the operation and disconnect the switching power supply when an electric shock accident or...
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Principle of system leakage detection
Jun 18 , 2020
Most technicians are very familiar with the GFCI sensor for ground fault current detection.The detection principle is as follows: In a three-phase system, a chip-type RCMU (leakage current monitoring unit) is placed on the bus. The most important thing is that all three buses pass through the middle hole of the RCMU randomly. The illustrated system does not have a neutral line and is a three-phase...
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Selection of residual current device in EV charging pile / module
Jun 17 , 2020
With the explosive growth of the number of new energy vehicles in the past two years, the construction scale of its supporting facilities and charging piles has also expanded. The growth of the new energy vehicle market is inseparable from the construction of basic charging facilities. How to ensure the safety of electricity used in the charging process, especially to prevent the leakage current f...
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Miniature current transformers
Jun 09 , 2020
Miniature current transformers are divided into miniature current transformers (including miniature current transformers) and miniature voltage transformers. It is a device in the power industry and is generally used in various power instruments for measurement and protection. Compared with ordinary transformers, micro-transformers have a smaller size (the size of fingernails can be achieved) and ...
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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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The difference between current transformer and zero sequence current transformer
Jun 09 , 2020
1. The basic function of current transformers The current transformers can convert primary currents with larger values to secondary currents with lower values through a certain transformation ratio, which are used for protection and measurement purposes. For example, a current transformer with a transformation ratio of 400/5 can convert the actual 400A current to 5A current. 2. Working principle o...
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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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