For example: Agilent E4440A or Anritsu 68369
DC Power Supplies
Keysight / Agilent P62A-4007.5
DC Power Supply, 400 V, 7.5 A, 3000 W
Manufacturer: Keysight / Agilent
Keysight / Agilent P62B-3006.6
DC Power Supply, 300 V, 6.6 A, 1980 W
Manufacturer: Keysight / Agilent
Keysight / Agilent P62B-4007.5
DC Power Supply, 400 V, 7.5 A, 3000 W
Manufacturer: Keysight / Agilent
Keysight / Agilent P62C-3006.6
DC Power Supply, 300 V, 6.6 A, 1980 W
Manufacturer: Keysight / Agilent