Description
Some DC inputs sit well above normal bench voltages. The Keysight N8761A DC power supply covers that range. It has one output of 300 V and 17 A, rated 5100 W, and it belongs to the N8700 Series. Lost in HCM lists it for rental and sale in Vietnam. It also arranges repair intake on request.

High voltage, modest current
| Rating | Listed value |
|---|---|
| Maximum output voltage | 300 V |
| Maximum output current | 17 A |
| Rated output power | 5100 W |
| Outputs | 1 |
This unit trades current for voltage. A 17 A conductor is far easier to handle than a 65 A one, so the wiring effort moves from copper to insulation. At 300 V and 17 A the product is 5100 W, which equals the rating. Your real operating point must still stay inside it.
Energy flow, inrush and shutdown
Before you connect a load, define how energy moves. This source only supplies power, so it does not replace a bidirectional battery emulator or a regenerative supply. Also confirm the inrush current and the shutdown behavior of the device under test. Then set the overvoltage and current limits from its requirements.
Safe setup for the Keysight N8761A DC power supply
Treat 300 V with respect. Use appropriate insulation and guarding, check polarity before you enable the output and follow the discharge procedure in the Keysight user guide. Have a qualified engineer review the setup first. The chain runs from the AC facility supply through the unit and protected DC cabling to the device under test. Measurement instruments sit alongside.
Where it fits
Teams use the Keysight N8761A DC power supply for converter inputs, DC-powered assemblies and controlled load tests in power electronics development. Production screening and endurance runs are also common. Rent it for a validation campaign, or ask for a purchase quote when the work repeats. In either case, request a quote from Lost in HCM and ask for a photo of the AC-input label and option list. The power supply category holds related units, the Keysight website describes the maker’s range, and you can contact SMK Vietnam with listing questions.
N8761A questions
What current can the N8761A deliver at 300 V?
The 17 A rating multiplies with 300 V to the 5100 W rating, so both maximums fit together. Still, check your own test point on the Keysight data sheet.
Does a 300 V setup need extra insulation?
Yes. Higher-voltage setups need proper insulation and guarding, and an engineer should review the cabling before the first power-up.
Can I join two supplies in series or parallel?
That is a configuration-specific function. Follow the manufacturer’s instructions, and ask Lost in HCM before you plan it.
















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