The Schneider Electric WATSNA63/2 2P 63A is a Power Monitoring Relay from the Accusine/PowerLogic family, specifically designed for active harmonic filtering applications. This device is a 2-pole active harmonic filter with a rated current of 63A, engineered to improve power quality by mitigating harmonic distortion in electrical networks.
Specifications
Parameter Specification
Product Range Accusine / PowerLogic (Active Harmonic Filter Series)
Device Type Active Harmonic Filter (AHF)
Model WATSNA63/2
Configuration 2-Pole (2P)
Nominal Current Rating 63 Amperes (A) RMS per phase
System Voltage Typically 120/240V AC (single-phase/split-phase)
Frequency 50/60 Hz (±5%)
Harmonic Compensation Range Up to 50th harmonic (2.5kHz)
Response Time <1 ms (typical)
Compensation Capacity • Harmonic Current: Up to 63A RMS
• Reactive Power: Up to 19.8 kVAR (240V)
• THDi Reduction: Can reduce to <5% (depending on system)
Efficiency Typically >97% at full load
Cooling Method Forced air cooling with fan
Switching Frequency Typically 16-20 kHz (IGBT based)
Communication Interfaces • RS-485 (Modbus RTU)
• Ethernet (optional)
• Display & Control Panel
Protection Features • Overcurrent
• Overvoltage/Undervoltage
• Overheating
• Short-circuit
• Auto-restart
Environmental Ratings • Operating Temperature: 0°C to +45°C
• Storage Temperature: -25°C to +70°C
• Humidity: 0-95% non-condensing
• Altitude: Up to 1000m without derating
Enclosure Rating Typically IP20 (for indoor installation)
Mounting Wall-mounted or panel-mounted
Dimensions (W×H×D) Approximately 400×600×250mm (varies by exact model)
Weight Typically 25-35 kg
Standards Compliance IEC 61000, IEEE 519, UL, CE