High-voltage rectifier equipment for tube testing

MERCURY-ARC rectifier equipment of high capacity and voltage rating and special design for tube-testing service has been installed in the RCA-Victor Company Advanced Development Laboratory at Lancaster, Pa. The equipment provides 2,000 kw at 12,000 volts d-c with two rectifier units connected in parallel, and 2,000 wk at 24,000 volts d-c with the two units in series. In each case, the d-c windings of the rectifier transformers are displaced 30 electrical degrees so as to achieve, effectively, 12-phase rectification. The basic power circuit of the installation is shown in Figure 1.