Description
Autoranging lets one supply cover several test voltages without a rack of different units. The Keysight N8946A DC power supply is an N8900 Series system rated 200 V, 140 A and 10000 W. Lost in HCM lists it for rental and sale, and it arranges repair intake on request.

Where the 10 kW envelope bends
Voltage and current are separate limits, and rated power caps what you can draw at once. Divide 10000 W by your test voltage to find the current ceiling. At 200 V that gives 50 A, while at 100 V it gives 100 A. However, the full 140 A is available only up to about 71 V.
So a 48 V rail can reach 140 A, which is roughly 6.7 kW. Write down your real operating points before you ask for a quote. Then check each one against the Keysight data sheet.
Specifications of the Keysight N8946A DC power supply
| Instrument type | N8900 Series autoranging system DC power supply |
|---|---|
| Maximum output voltage | 200 V |
| Maximum output current | 140 A |
| Maximum output power | 10000 W |
| AC input | 400 VAC, three phase |
| Interfaces | LAN, USB, GPIB and analog |
Typical jobs for the Keysight N8946A DC power supply
- Powering converter inputs and DC-fed assemblies during development.
- Running repeated power-on checks and endurance cycles on a factory station.
- Feeding ECU, lighting or motor-control electronics during functional tests.
It is a DC source only. Because of that, do not expect it to act like a battery emulator or a regenerative supply, and confirm the energy flow of your device first.
Getting the unit ready
The listed input is 400 VAC, three phase. Also, the factory-installed AC-input option has to match your site, so ask Lost in HCM for a photo of the label and the option list. Control runs over LAN, USB, GPIB or analog. Before you automate a line, try the driver on one representative station.
Current at this level needs heavy conductors, so ask an engineer to review conductor rating and connection resistance. Then check polarity while the output is off, and set protection limits from the needs of the device under test. The Keysight user guide covers sensing and discharge steps.
Rent it for a project or buy it
A rental of the Keysight N8946A DC power supply suits a validation campaign, an urgent replacement or a production ramp. However, a team that repeats the same test every week may prefer to buy. If the unit needs repair, Lost in HCM starts from the serial number, a fault description and photographs. It treats repair and traceable calibration as separate jobs. In addition, SMK Vietnam shows the listing but does not stock, price or service anything.
So to begin, request a quote from Lost in HCM with your dates, voltage and current pairs and delivery city. Similar models are listed under power supplies. For data sheets, see the Keysight website, and for questions contact SMK Vietnam.
N8946A questions
How much current can it give at 100 V?
About 100 A. Roughly 100 A, since rated power caps voltage times current at 10 kW.
Which power feed does it need?
The listing shows 400 VAC, three phase. Confirm the installed AC-input option against your site before you order.
Can I get a photo of my exact unit?
The listing photo is a family image. Ask Lost in HCM for the label photo and option list of the unit it quotes.
















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