Since silicon steel has the advantages mentioned above, why not use the whole silicon steel as the iron core and process it into sheets? This is because the flaky core reduces another type of iron called “Eddy current loss” . When a transformer works,...

The transformer is made according to the principle of electromagnetic induction. There are two windings, a primary windings and a secondary windings on top of the closed iron core. When the original winding plus AC power supply voltage. There is alternating current in...

In the iron core, the part of the winding is called “core column” , and the part of the magnetic circuit that does not have the winding is called “Iron Yoke” . Where iron core around the winding is called Shell Type; where the winding around...

Zero sequence current protection is generally suitable for TN ground system. For a TN-S system, the ID loop impedance includes the phase line impedance Z1, the Pe Line impedance Zpe and the contact impedance ZF, namely zs = Z1 + Zpe + Zf; for a TN-C system, the ID...

The secondary side is absolutely not allowed to open the circuit, because once the open circuit, the primary side current I 1 all become magnetized current, cause M and e 2 sudden increase, cause core oversaturation magnetization, heat serious and even burn out the...

1) the insulation of the current transformer is very thick, some insulation wrapping is loose, there are creases between the insulation layers, in addition, the vacuum treatment is bad, the impregnation is not complete and causes the air-containing cavity, thus easy...