Schneider Electric / Conzerv EM6400 Power Meter

The Schneider Electric Conzerv EM6400 is a three-phase multifunction power and energy meter engineered for detailed electrical parameter measurement and load management across industrial, commercial, and utility installations. It replaces analog meters with precision digital metering in a compact form factor, integrating into custom panels, switchboards, switchgear, gensets, motor control centers, and UPS systems.

Technical Specifications

Measurement Capabilities
The EM6400 delivers true RMS measurements across all electrical parameters: per-phase voltage (line-to-neutral and line-to-line), current, demand, active power (W), apparent power (VA), and reactive power (VAr). Integrated energy totals include kWh, kVARh, and kVAh. Four-quadrant energy measurement captures bi-directional, absolute, and net energy flow. Advanced diagnostics include neutral current, frequency, power factor (signed, four-quadrant), load percentage, voltage and current unbalance, phase angle, on-hours, run-hours, and interruption counts. Harmonic analysis extends to the 15th harmonic with individual component measurement and total harmonic distortion (THD) for both voltage and current per phase. Phase-wise load percentage relative to full scale (%A FS), average current (Iavg), and average voltage (Vavg) are logged continuously. Accuracy Performance
Active energy accuracy meets Class 1.0 per IEC 62053-21 and Class 0.5S per IEC 62053-22. Reactive energy conforms to Class 2 per IEC 62053-23. THD and harmonic accuracy achieve Class 5P per IEC 61557-12. Standalone measurements specify ±0.5% for current, voltage (L-N and L-L), and power; ±0.05% for frequency; and ±0.01 for power factor. Electrical Specifications
Auxiliary supply range: 44 to 300 V ac/dc, 45–65 Hz. Input voltage range: 80 to 600 V ac line-to-line nominal (35 to 600 V ac L-L operating); 110 V ac nominal line-to-neutral (35 to 277 V ac L-N operating). Rated current options: 5 A or 1 A. Current measurement range: 50 mA to 6 A. Maximum permanent overload: 750 V ac L-L. Impulse voltage withstand: 6 kV (1.2/50 µs, IEC 60060). Surge withstand: 4 kV IEC 61000-4-5. Fast transient: 4 kV IEC 61000-4-4. ESD immunity: 15 kV air discharge, 8 kV contact discharge (IEC 61000-4). Communications
RS-485 interface for remote data acquisition and system integration.