Chroma 66203 Digital Power Meter

Overview

The Chroma 66203 is a 3-channel digital power meter designed for single-phase and multiple-phase AC power measurements. It uses state-of-the-art DSP technology with 16-bit analog/digital converters sampling at up to 200 kHz, providing industry-leading accuracy and speed for power analysis applications.

Each channel operates independently, making it ideal for multi-point measurement scenarios such as PV inverter efficiency testing. The 66203 supports flexible wiring configurations (1P2W, 1P3W, 3P3W, 3P4W) and meets international standards including ENERGY STAR, IEC 62301, and ErP requirements.

Key Features

• 3 independent measurement channels with simultaneous operation
• Voltage ranges: 15, 30, 60, 150, 300, 600 Vrms
• Current ranges: 0.005 to 20 Arms with 5 mA minimum
• DC to 10 kHz frequency range
• 0.1 mW power resolution
• GPIB and USB interfaces for remote control and data logging
• 7-segment LED front panel readouts
• THD and harmonic distortion measurements up to 50 orders
• Inrush current and accumulated energy measurements
• User-defined PASS/FAIL criteria with automatic indication
• High accuracy over wide range with dual current shunt design
• Support for external shunt and CT sensors for extended current ranges
• Flexible wiring mode support: 1P2W, 1P3W, 3P3W, 3P4W

Applications

• PV inverter efficiency testing and characterization
• Multi-point power measurement in complex systems
• DC input and three-phase AC output measurements on power electronics
• Production and quality control testing
• R&D and validation of power conversion efficiency
• ENERGY STAR and ErP compliance verification