500V Variable DC Power Supply

500V represents the threshold of 'High Voltage' in commercial contexts, serving as the critical testing ground for capacitor reforming, insulation resistance, and datacenter power distribution. Modern hyperscale datacenters are moving toward 380V-400V DC distribution systems; a 500V variable supply provides the necessary overhead to stress-test server rack power units (PSUs) and ensure reliability under surge conditions. In component manufacturing, 500V supplies are utilized for 'burn-in' and aging of electrolytic capacitors. The ability to ramp voltage slowly prevents inrush current damage while effectively healing dielectric imperfections. This voltage level is also pivotal for testing Photovoltaic (PV) string inverters at the lower end of their MPPT range.