Specifications Parameter Category Details Manufacturer & Series Schneider Electric, VarSet Plus (PFX Series) Complete Model Number PFXSTW6700WAD Product Type Automatic Power Factor Correction Capacitor Bank (Wall-Mounted) Rated Reactive Power (Qc) 67 kvar (total, at 400V, 50Hz) Supply Voltage 400V AC, 3-phase + Neutral, 50/60 Hz Rated Current Approximately 97 A (calculated from Qc = √3 * V * I). Number of Steps / Step Configuration This is a multi-step bank. The exact number and size of steps (e.g., 6 x 10 kvar + 1 x 7 kvar) are defined by the model code. PFXSTW6700 indicates a total of 67 kvar. Step Switching Technology Contactor-based switching (standard, economical). Some series offer thyristor-switched (TSC) options for rapid, wear-free switching. Integrated Controller Yes. Typically features a digital controller with display showing power factor, current, voltage, harmonics, etc. Automatically controls step switching. Harmonic Suppression Capacitors are typically equipped with detuning reactors (e.g., 7% or 14% impedance) to prevent resonance with network harmonics and provide some protection against harmonic distortion. Enclosure Wall-mounted metal enclosure (indicated by W). Protection rating typically IP31 (indoor use). The AD suffix may specify door type (e.g., with window) or color. Installation Designed for wall mounting or floor-standing (with optional legs). Ambient Temperature Typically -25°C to +55°C for operation. Standards & Certifications IEC 60831-1/2, EN 60831-1/2, CE. Typical Applications Industrial plants, commercial buildings, data centers, and any facility with a significant inductive load (motors, transformers, lighting ballasts) where poor power factor leads to increased electricity costs and reduced network capacity.