A 380-400 VAC three-phase coating/plating rectifier is an industrial power supply that converts high-voltage alternating current (AC) into precise, highly stable, low-voltage direct current (DC). The specification describes a compact, heavy-duty unit designed to provide high-amperage current (up to 500 Amps) at low voltages (0–12 VDC) for precise metal deposition.
Where It Is Used
This specific type of rectifier is the backbone of surface treatment and electrochemical processes in the manufacturing sector:
Electroplating & Coating: Used to deposit thin, protective, or decorative layers of metal (such as nickel, zinc, chrome, copper, gold, or silver) onto metal or plastic substrates.
Anodizing: Used to create a protective, corrosion-resistant oxide layer on aluminum parts (often in aerospace, architectural, or automotive industries).
Electrolysis & Electrowinning: Used in chemical separation processes or precious metal recovery from solutions.
Electrochemical Polishing / Deburring: Used to smooth microscopic surface roughness on manufactured mechanical and medical parts.
Brush Plating: Used for localized, on-site repairs of damaged or worn-out metallic machine parts without submerging the entire component in a tank.
Why These Specs Matter
380-400 VAC, 3-Phase: This is the standard industrial electrical supply, allowing the machine to draw heavy loads reliably and draw energy smoothly from the grid without overloading single-phase lines.
0-12 VDC: Plating requires very low voltages to control the exact rate at which metal ions travel from the anode to the cathode.
500 Ah (Ampere-hours): This dictates the total current capability and the time integrated into the plating process. It allows the machine to deposit metal over large surface areas or drive thick coatings rapidly.
