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Split core current transformer Structural characteristics and working principle
Jul 20 , 2022
1. Structural features Split core current transformer has a good design structure, beautiful appearance, and a transparent flip-top design for easy wiring. The shell material is made of PC/ABS alloy, which has the characteristics of high temperature resistance, high mechanical strength and environmental protection; the iron core is made of oriented cold-rolled silicon steel sheet, which has the ch...
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The Difference of Zero Current Transformer and Current Transformer
Jul 21 , 2022
The zero current transformer is a current monitor of line fault. It has only one iron core and secondary winding. When it works, the primary three-core cable is passed through the iron core window of the transformer, and the secondary one is connected to the relay with lead wire, and then the output terminal of the relay is connected to the signal device or alarm system. Under normal circums...
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Fixation Mode of Split Core Current Transformer
Jul 21 , 2022
Split core current transformers are often used in equipment and have excellent induction effects, which can improve the use efficiency of equipment, have a good effect in controlling current, and complete the conversion of upper and lower voltages. How should we fix it in order to make it work smoothly and avoid vibration? ZTC will take you to understand. 1.Fixing with set screws: The set screws a...
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The function of RCD fused connection unit
Jul 25 , 2022
From the image above, we can see that the three-phase power line and neutral line from the circuit breaker to the electrical equipment pass through the zero-sequence current transformer, and after the secondary winding of the differential current transformer is processed by the RCD detection and control device, to control the circuit breaker to trip. This is how the leakage switch RCD works. Note:...
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The ratio difference, angle difference of the transformer and the safety on the current transformer line
Jul 25 , 2022
Ratio difference: The fault of the transformer includes both the ratio difference and the angle difference. The ratio error is abbreviated as the ratio error, which is usually indicated by the symbol f. It is equal to the difference between the actual secondary current and the primary current converted to the secondary side and the ratio of the primary current converted to the secondary side. It i...
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Application analysis of leakage protection in electric vehicle charging pile
Jul 25 , 2022
As the world's largest consumer of new energy electric vehicles, new energy electric vehicles are developing rapidly, and the safety of electric vehicle charging piles is a top priority: whether the electric vehicle charging pile can avoid random plugging and unplugging during the charging process. The accident caused by the charging gun, whether it can be automatically powered off after charging,...
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Leakage current generation classification
Jul 25 , 2022
Generally, there are four types of leakage currents: semiconductor component leakage current, power supply leakage current, capacitor leakage current and filter leakage current 1. Leakage current of semiconductor components The very small current that flows through the PN junction when it is turned off. D-S is forward biased, G-S is reverse biased, and after the conductive channel is opened, curre...
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Current transformer structure principle
Nov 10 , 2022
1, The ordinary current transformer structure principle is relatively simple, by the mutual insulation of the primary winding, secondary winding, core and frame, shell, terminals and other components. Its working principle and transformer is basically the same, a winding turns (N1) less, directly in series in the power line, a load current (I1) through a winding, the alternating flux induction gen...
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