Description

The purpose of rectifier transformer is to obtain a certain rectified DC voltage, but the AC voltage of the power grid often cannot meet this need. A rectifier transformer is usually used to convert the AC voltage of the power grid into the required rectified power supply to meet various needs. At the same time, in the rectification circuit, making the current flowing through the load close to the ideal DC and controlling a larger AC load with a smaller DC power.

• Widely used in lighting, machine tool appliances, mechanical and electronic equipment, medical equipment, rectifier devices, etc.
• The industry where rectifier transformers are most widely used is the electrochemical industry, which electrolyzes non-ferrous metal compounds to produce aluminum, magnesium, copper and other metals; electrolyzes salt to produce chlor-alkali; electrolyzes water to produce hydrogen and oxygen.
• DC grid for mining or urban electric locomotives. Due to the frequent short-circuit faults and the large range of DC load changes, electric locomotives are often started, resulting in varying degrees of short-term overload. For this reason, the temperature rise limit and current density of this type of transformer are both low. The impedance is about 30% greater than that of the corresponding power transformer.
• It is mainly used to power DC motors in electric transmission, such as the armature and excitation of steel rolling mills. The voltage of this type of rectifier transformer is generally above 110kV, with a capacity of tens of thousands of kilovolt-amperes. Special attention should be paid to the AC and DC superposition of ground insulation.
• In addition, there are DC power supplies for electroplating or electrical processing, DC power supplies for excitation, DC power supplies for charging and electrostatic precipitating, etc.