There are three cooling methods for rectifiers: air cooling, water cooling and oil cooling. Here, we mainly introduce the advantages and disadvantages of water cooling:

1) Water-cooled rectifiers:

For high power DC power supplies with poor environmental conditions, such as with corrosive fumes, dusty and high ambient temperatures requiring high IP ratings, water cooling is more suitable.

The heat generated by the power semiconductor components inside the rectifier will be dissipated by circulating cooling water. Cold water (below 35°C) enters the rectifier cooling circuit and discharges the hot water, through which the heat is dissipated to keep the rectifier running normally.

Advantages of water cooling:

A. Requires less maintenance, no need to replace the cooling fan like air cooling;

B. Relatively low cost;

C. Better cooling performance in high temperature environments up to 50°C;

D. Better heat dissipation for high power rectifiers;

E. Cabinet sealing, suitable for corrosive environments;

F. Higher IP rating;

G. Low noise;

H. Smaller size.

Disadvantages:

A.Requires users to provide suitable cooling water 

IF you choose Water-cooled rectifiers, you may need use Siemens 3RH1122-1AP00 to function your machine, our company can provide for you.Vivi (sh_plc@163.com)