The YCPQA-9901 Power Quality Analyzer performs comprehensive online monitoring of electrical network parameters, including voltage, current, and power measurements. This advanced instrument conducts both long-term and short-term surveys to assess power quality, measure circuit loss, evaluate power correction equipment performance, and develop harmonic pollution reduction strategies.

• 8.4-inch high-luminance LED backlight TFT color LCD with excellent sunlight visibility
• Windows-style graphical interface with intelligent assistance system for real-time operational guidance
• Comprehensive parameter measurement: current, voltage, active power, reactive power, apparent power, and power factor
• Advanced harmonic analysis for 2-63 harmonics with graphical spectrum display
• Three-phase voltage and current waveform simultaneous display
• Sequence component, unbalance, flicker, voltage fluctuation, and frequency measurements
• International standard compliance calculations for voltage deviation, frequency deviation, and harmonic analysis
• Wavelet data processing for event analysis including voltage dips, swells, and transient events
• Circuit loss measurement capability
• Large internal memory with optional USB storage expansion
• Wide input voltage range (AC 85V-450V) with 8-hour lithium battery backup

The instrument features floating-point Digital Signal Processing (DSP) for simultaneous data processing without time errors, combined with a 32-bit 260MHz high-speed ARM9 CPU that enables standalone operation without requiring a PC or laptop.