The Pacific Power 3550AZX-8 is a regenerative 4-quadrant AC/DC power source and load that functions simultaneously as an AC voltage source, DC power supply, current source, and Power Hardware-in-the-Loop (PHIL) interface. Rated at 55 kVA / 55 kW, this instrument delivers precise waveform control across multiple output configurations—single, split, and three-phase modes—with dual independent channels or full three-phase capability. The unit recovers over 90% of energy to the utility grid during regenerative operation, minimizing facility power consumption during testing cycles.
Technical Specifications
Output Power & Voltage
• Rated Power: 55 kVA / 55 kW (36.7 kVA in split-phase mode)
• AC Output: 0-225 VAC (L-N) / 0-415 VAC (L-L) low range; 0-440 VAC (L-N) / 0-760 VAC (L-L) high range
• DC Output: 0-335 VDC low range; 0-650 VDC high range
• Constant power operation from 52% AC or 50% DC of full-scale voltage
Current Ratings
• AC: 130 ARMS maximum per phase (low voltage); 75 ARMS per phase (high voltage, three-phase)
• DC: 100 ADC maximum per phase (low voltage); 75 ADC per phase (high voltage)
Frequency & Control
• Frequency Range: DC, 1–1000 Hz, with extended mode to 10 kHz
• Accuracy: ±0.005% (50 ppm); 0.01 Hz resolution
• Phase Angle: 0–359.9° programmable (B, C phases); 0.1° resolution
• Three DSP architecture for advanced signal processing
Waveforms & Transients
• Standard: Sine, square, triangle
• Advanced: Total harmonic distortion (THD) control, arbitrary waveforms (up to 200), harmonics, and interharmonics
• Transient modes: List, pulse, step (200 programs); voltage slew rate to 12.0 V/ms
Control & Connectivity
• User Interface: Full-color touchscreen LCD with table and graph display modes
• Software: SmartSource Suite remote control platform; PPSC Manager web-based interface
• Interfaces: USB, LAN (LXI), RS232, GPIB; IVI instrument drivers
– Key Features
• Dual voltage range operation with automatic transition and constant power capability
• High energy recovery efficiency (>90%) for reduced operational costs
• Three independent output channels (split or three-phase configurations)
• Programmable transient profiles and arbitrary waveform generation
• Multi-protocol connectivity for laboratory automation and remote operation
– Typical Applications
• Product development and validation testing
• Compliance and regulatory testing
• Power Hardware-in-the-Loop (PHIL) simulation and grid emulation
• Battery charging and discharging characterization
• Power converter and drive testing across variable voltage and frequency conditions
– Compatibility & Integration
The 3550AZX-8 integrates with existing test environments via standard LXI, GPIB, RS232, and USB protocols. IVI driver support enables rapid integration into LabVIEW, Python, and C-based test frameworks. Web-based PPSC Manager provides centralized control and data logging for multi-unit deployments.
