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High-frequency power for complex applications
Keysight NC5-class Pro three-phase AC power supplies include the AC6900H Series. They go beyond basic power, with high-frequency models that generate power output at frequencies up to 5 kHz. The high-frequency capabilities are critical in applications like high-precision harmonic analysis, enhanced renewable energy testing, avionics, and industrial systems. Like our Essential models, our Pro models include a built-in multimeter, harmonic analyzer, and power analyzer, but the added frequency makes them ideal for testing state-of-the-art avionics equipment that requires testing with frequencies beyond 400 Hz. Choose one of our popular configurations or configure one specific to your application.
Elevated avionics test
Test military and aerospace systems that use power at frequencies beyond 400 Hz. For example, MIL-STD-704 can require testing up to 800 Hz and beyond for certain aircraft.
High-frequency simulation
With frequency up to 5 kHz and high power, you can simulate variable frequency AC systems used in electric aircraft to reduce weight and boost efficiency.
Motor drive and inverter test
Ideal for testing high-speed motors and inverters, ensuring accurate analysis of frequency response, control, and efficiency in aerospace and industrial applications.
Accurate harmonic analysis
Harmonic analysis up to the 50th order ensures precise detection and evaluation of power quality issues caused by nonlinear loads and electrical disturbances.
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Maximum frequency
5000 Hz
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Maximum power
3000 VA to 18000 VA
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Maximum current per output
40 A to 240 A
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Maximum voltage per output
452 V
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DC Power
3 kW to 18 kW
Most popular configurations
NC5-class Three-Phase AC Power Source, 5000 Hz
NC5-class Three-Phase AC Power Source, 5000 Hz
NC5-class Three-Phase AC Power Source, 5000 Hz
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Frequently asked questions
A single-phase AC power supply and a three-phase AC power supply differ in power delivery, efficiency, and application. A single-phase power supply has one alternating current (AC) waveform, making it suitable for low-power applications such as household appliances, office equipment, and small industrial tools. It operates at a standard voltage of 120V or 230V and typically supplies power at 50 Hz or 60 Hz, depending on the region. However, it has more voltage fluctuations, leading to less efficiency in powering large loads.
In contrast, a three-phase AC power supply consists of three alternating current waveforms, each 120 degrees out of phase, providing continuous and balanced power. This design reduces voltage dips, ensuring smoother operation, higher power efficiency, and greater stability. Three-phase power supplies are used in high-power applications, including industrial automation, manufacturing plants, electric motors, and aerospace testing, where stable and reliable power is crucial.
A three-phase AC power supply offers superior efficiency, stability, and power capacity, making it ideal for industrial, commercial, and compliance testing applications. It provides continuous, balanced power output, reducing voltage fluctuations and ensuring smooth operation of high-power equipment.
Compared to single-phase systems, it delivers higher power efficiency with minimal energy loss, allowing for greater load handling without oversized conductors. Three-phase power supplies support adjustable frequencies (50 Hz to 400 Hz), making them suitable for applications in aviation, defense, and motor control systems.
They also include harmonic analysis and filtering capabilities, minimizing electrical noise and improving power quality to meet regulatory standards like IEC 61000-3-2. Their ability to simulate power transients, voltage sags, surges, and frequency variations ensures compliance with IEC, MIL-STD-704, and DO-160 testing requirements.
By reducing electrical stress on components, three-phase systems extend equipment lifespan, lower maintenance costs, and enhance overall reliability. Their advanced features make them essential for EMC compliance testing, power electronics validation, and industrial automation, ensuring devices function optimally under real-world power conditions.
A three-phase AC power supply can be used for electromagnetic compatibility (EMC) compliance testing, ensuring electronic devices meet international regulatory standards such as IEC 61000-3-2, IEC 61000-4 series, MIL-STD-704, and DO-160. EMC compliance testing assesses a device’s ability to operate without generating or being affected by electromagnetic interference (EMI). A three-phase power supply is particularly useful in power quality, harmonic emissions, voltage fluctuations, and immunity testing, which are critical for compliance with these regulations.
Three-phase power supplies allow precise simulation of real-world power conditions, including voltage sags, surges, flicker, frequency variations, and transient disturbances (IEC 61000-4-11). They also support harmonic analysis up to the 50th order, which is essential for limiting harmonic distortions in industrial and commercial applications as required by IEC 61000-3-2.
In MIL-STD-704 and DO-160 testing for aerospace and defense applications, three-phase power sources are used to replicate aircraft power conditions, ensuring equipment can withstand electrical transients, frequency variations, and power interruptions.
Additionally, a three-phase AC power supply provides high stability and accuracy, reducing voltage fluctuations that could affect test results. It allows for adjustable frequency operation (50 Hz to 400 Hz), making it suitable for aviation, defense, and high-power electronic testing. Its ability to simulate real-world grid conditions and transient disturbances makes it indispensable for EMC compliance testing across multiple industries, ensuring electrical devices function correctly within regulated electromagnetic environments.