Keysight (Agilent) N8954A Autoranging System DC Power Supply, 500 V, 90 A, 15000 W

The Keysight N8954A is a 15 kW autoranging system DC power supply delivering 0–500 V and 0–90 A in a single-output, 3U rackmount chassis. Unlike conventional supplies limited to one voltage-current combination at full power, the N8954A autoranging architecture enables multiple operating points across its full 15,000 W range, functioning as multiple supplies in one unit. Fully programmable with integrated voltage and current measurement, it accepts 360–440 VAC input (nominal 400 VAC) and integrates over-voltage, over-current, and over-temperature protection.

The supply connects via LAN (LXI Core), USB, GPIB, and analog interfaces, with a built-in web server enabling remote browser-based control. Operating range spans 0 °C to 45 °C and up to 2000 m altitude. Multiple N8954A units parallelize using master/slave control to achieve combined output exceeding 100 kW, programmed as a single logical supply without individual unit configuration.

The BV0003B Power Supply app ships standard. LabVIEW drivers support integration with NI-VISA, NI-488.2, and Microsoft Visual C++ environments. Operating and Service Guides, datasheets, technical overviews, application notes, and 3D STEP models are available.

Technical Specifications

• Output Power: 15,000 W (15 kW) maximum


• Voltage Range: 0 to 500 V (programmable)


• Current Range: 0 to 90 A (programmable)


• Input Power: 360–440 VAC (nominal 400 VAC)


• Output Configuration: Single output with autoranging


• Measurement: Built-in voltage and current metering


• Protection: Over-voltage, over-current, and over-temperature


• Operating Temperature: 0 °C to 45 °C


• Operating Altitude: Up to 2000 m


• Form Factor: 3U rackmount (5.25 inches)

Key Features

• Autoranging topology maintains full 15 kW across all voltage-current combinations


• Programmable control with LAN (LXI Core), USB, GPIB, and analog interfaces


• Web server interface for remote access via standard browser


• Parallel operation with built-in master/slave control for systems exceeding 100 kW


• Storage temperature range: –20 °C to 70 °C


• Operating humidity: 80% RH

Typical Applications

• Automated test equipment (ATE) requiring variable voltage-current profiles


• Multi-rail power delivery where a single supply must service diverse load requirements


• High-power testing scenarios benefiting from flexible V-I combinations


• Parallel-configured systems demanding coordinated master/slave operation

Compatibility & Integration

• Included software: BV0003B Power Supply app


• LabVIEW drivers for NI-VISA, NI-488.2, and Microsoft Visual C++ environments


• Documentation includes operating guides, service guides, datasheets, technical overviews, application notes, and 3D STEP models