For sale NEC (Japan) NJD-4510 type noisefree high power(2.5KW) switching  DC power supplies.
AC input : 160-230V single phase, or 200V/3 phase.
Output voltage: 22..30V/85A on case NJD-4510.
The NJD-4510M gives 48..50V/50A.
Dimensions:320x100x480mm, weight: 8 kg
Full documentation  and AC cable is available.
We recommend it to high power  TS or FET linear amplifiers!