Agilent/Keysight AC6903H

The Keysight AC6903H is a three-phase AC power source and integrated power analyzer delivering 3 kVA of precise, stable power for electronic device and system testing. It combines AC, DC, and AC plus DC output modes in a single unit, with built-in multimeter, harmonic analyzer, and power analyzer functions. The instrument generates custom AC waveforms and simulates power line disturbances - outages, surges, and sags - making it ideal for avionics and specialty applications requiring compliance with RTCA DO-160 and MIL-STD-704 standards.

Technical Specifications

• Power capacity: 3 kVA total


• Output modes: AC, DC, or AC plus DC


• AC voltage (RMS): 1–160 V (Low range), 2–320 V (High range)


• DC voltage: 1.4–226 VDC (Low range), 2.8–452 VDC (High range)


• Peak voltage: ±227.5 V (Low range) or ±455 V (High range)


• Frequency: DC to 5 kHz; 50/60 Hz input


• Current (RMS): 30 A / 15 A (single-phase/three-wire), 10 A / 5 A (three-phase four-wire)


• Current limiting: Instantaneous peak limiting; maximum limit based on RMS value


• Line regulation: ±0.1%


• Load regulation: ±0.1–0.2 V (≤100 Hz), ±0.3–0.6 V (≤500 Hz), ±1–2 V (≤1 kHz)


• Temperature coefficient: 100 ppm/℃ Measurement Functions


• Voltage & current: AC, DC, AC plus DC, peak values


• Power: Real, apparent, and reactive


• Power factor and crest factor


• Harmonic analysis: Voltage and current harmonics up to 50th order with amplitude and phase


• Total harmonic distortion (THD)

Key Features

• Single-phase, single-phase three-wire, and three-phase four-wire configurations


• Power line disturbance simulation for environmental testing


• Output sequencing for protocol-specific test execution


• Waveform generation with harmonic synthesis


• Transient response compensation (FAST or MID modes)

Typical Applications Avionics equipment testing, power supply validation, environmental stress screening, and compliance verification against aerospace standards.

Compatibility & Integration Supports standard three-phase and single-phase connections; operates from 50/60 Hz mains input.