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Schneider NW-BM85C002
Schneider NW-BM85C002

ABB NVAR-45

Product Name:​ Three-Phase Dry-Type Self-Healing Noise-Filtering Capacitor (also referenced as varistor/dV-dt suppression accessory in drive cabinets)
Product Introduction:​ A 45 kvar metalized polypropylene capacitor with non-inductive winding, intended for VFD output dV/dt smoothing, harmonic current absorption and power-factor correction on 380–480 V AC buses.
Category:
Description
Technical Specifications:
  • Rated capacitance power:​ 45 kvar
  • Voltage:​ 480 V AC nominal (usable 380–480 V, 50/60 Hz)
  • Dielectric:​ Metalized polypropylene film, dry, self-healing
  • Topology:​ 3-phase delta internal
  • Parasitic:​ Very low ESL (non-inductive layout)
  • Temp range:​ −25 °C to +55 °C (derated above)
  • Enclosure:​ IP20, steel/aluminum can
  • Connection:​ Bolt terminals, busbar mounted
    Functional Features:​ Absorbs IGBT switching spikes, reduces motor terminal voltage rise rate, suppresses bearing EDM currents, self-heals on local breakdown.
    Working Principle:​ High-frequency impedance path shunts PWM harmonics to ground/neutral; metal layer vaporizes locally on fault and re-insulates.
    Installation:​ Mount near VFD output, secure torque on terminals, discharge resistors must remain connected, keep clearance for convection.
    Usage Notes:​ Verify residual voltage before handling; inspect annually for bulging; replace if capacitance drops >10 % of nameplate.
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