Keysight (Agilent) N8951A Autoranging System DC Power Supply, 80 V, 510 A, 15000 W

The Keysight N8951A is a 15 kW autoranging system DC power supply engineered for high-demand automated test equipment (ATE) applications requiring flexible, efficient power delivery. Operating from 400 VAC input (360–440 VAC range), this single-output supply delivers up to 80 V and 510 A with autoranging capability - enabling dynamic voltage and current combinations at full 15000 W output. This eliminates the need for multiple fixed-output supplies in complex test scenarios.

Technical Specifications

• Maximum voltage: 80 V


• Maximum current: 510 A


• Output power: 15000 W


• Output range: 0–80 V, 0–510 A


• Voltage programming accuracy: 0.1% of full-scale


• Current programming accuracy: 0.2% of full-scale


• Voltage measurement accuracy: 0.1%


• Current measurement accuracy: 0.2%


• Output ripple and noise: 320 mV (voltage), 25 mV (noise) AC Input


• Input voltage: 400 VAC


• AC range: 360–440 VAC


• Power factor: > 0.99 Physical


• Form factor: 3U rack mount


• Dimensions: 483 × 133 × 610 mm


• Weight: 30.9 kg

Key Features

• Autoranging output provides wide voltage–current combinations maintaining full 15000 W across the operating envelope


• Built-in measurement for voltage and current monitoring


• Parallel operation capability: up to 4 units (60 kW total), or six 15 kW units in prewired rack configuration (90 kW total); master–slave control for unified programming


• Protection circuits include over-voltage (OVP), over-current (OCP), and over-temperature (OTP) safeguards


• Programmable operation via LAN (LXI Core), USB 2.0, GPIB, and analog interfaces


• Remote access through integrated web server and standard control protocols

Typical Applications Automated test systems requiring high dynamic power delivery, parallel redundancy configurations, and multi-range output flexibility. Ideal for battery charging, power component testing, and load simulation in production test environments.

Compatibility & Integration LXI Core–compliant Ethernet, USB 2.0, GPIB, and analog control enable integration into existing ATE architectures. Web server access supports remote configuration and monitoring. Units operate as independent supplies or paralleled arrays with synchronized master–slave control.