my country's environmental standards for electromagnetic fields in power transmission and transformation are stricter than international standards. The power frequency electric field intensity exposure limit issued by the international authoritative organization recommended by WHO for the protect... read more
First of all, the transformer must have radiation. During the operation of the transformer, in addition to environmental noise, it does produce electromagnetic radiation. If this electromagnetic radiation exceeds the prescribed energy limit, electromagnetic radiation pollution will be formed. Elec... read more
Body main body: including iron core, winding, insulation support Voltage regulating device: tap changer, (load regulating device and non-excitation regulating device) Fuel tank and fin-shaped radiator (wing), sleeve Safety devices: moisture absorber, gas relay, oil filter and temperature measuring i... read more
In the process of power transmission, transformation and distribution, the transformer is an important electrical equipment. Transformers can be seen everywhere in industrial enterprises, shopping malls, office buildings, and residential communities. The role of transformers in the power industry is... read more
In addition, the grounding transformer has electromagnetic characteristics, and has high impedance to the positive sequence and negative sequence currents, and only a small excitation current flows in the windings. Since the winding directions of the two windings on each iron core column are opposit... read more
