The iron core is the main magnetic circuit in the transformer.It is usually stacked from hot -rolled or cold -rolled silicon steel sheets with insulating paint on the surface.The iron core and the coil around it form a complete electromagnetic induction system.The power transformer transmission power depends on the material and cross -sectional area of ??the iron core.
Transformer core power calculation
P (w) = s (mm) 2 = 19*19 = 361W.You can make a transformer with a single phase 220V capacity of 300VA.It is known that the metal core section is 19 square millimeters. The core of the silicon containing a silicon content of 9,000 Gauss is selected to choose Azabi.Wind 3*12 = 36 lap.The cross -sectional area of ??the primary line is selected, the current is 300VA/220 = 1.36A. According to the current of 5A per square millimeter, it is considered = 1.36/5 = 0.28 square millimeter -optional diameter of 0.6 mm.Section of the secondary line of the secondary line, 300/12 = 25A25/5 = 5 square millimeter optional lines with a diameter of 2.6 mm.If the core mouth is rich, the diameter of the first and secondary lines can be selected.
Transformer core connection
During the use of the transformer, the parts and components around the iron core and the iron core are in a strong electromagnetic field. Therefore, the iron core itself will have a high ground power level due to the influence of the electric field.There is no connection wires between the meter, then the iron core will generate the potential difference between the ground and the discharge phenomenon will occur.
Transformer iron core section calculation
The calculation power of the transformer is calculated according to the cross -area area of ??the center of the iron heart, the size of the iron -hearted window, and the input voltage and output voltage.Calculate the number of turns based on the cross -sectional area of ??the iron heart and input voltage.Calculate the outline regulations (the line diameter of the lacquer cable) based on the window size and turns, and then calculate how much current can be spent based on the wire diameter.Calculate his power.According to the formula: Turn left to right to N = 4.4FBS/104 formulas n = turns in the formula. F is the frequency. B is the magnetic flux density of silicon steel sheets. Generally, 10,000 Gaussia is subject to the voltage.Calculate the number of turns in step by step, lets calculate it slowly.
The role of transformer iron core
The role of transformer iron cores is mainly in two aspects: stagnation loss and vortex losses, respectively.1. Magnetic stagnation loss, it means that when the transformer works in the communication state, it will cause iron loss due to magnetic stagnation, and the use of the transformer core can change this phenomenon to a certain extent.And can also relieve the surface of the transformer at work.

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