Variable frequency drives, UPS systems, and renewable energy inverters require AC filter capacitors capable of maintaining long-term electrical performance under challenging environmental conditions. The WAM Series AC Filter Capacitors are engineered to deliver reliable filtering performance, high endurance, and extended operational life in applications exposed to temperature fluctuations and humidity.

Built with a self-healing metallized polypropylene film structure, the capacitors provide stable electrical characteristics and enhanced reliability throughout their service life. For outdoor installations and severe humidity environments, THB-qualified versions offer additional protection and durability.

Key Features

• High Reliability Design:Developed for demanding variable frequency motor drive applications.
• THB-Tested Performance:Operates for 1,000 hours at 85°C, 85% RH, and rated voltage.
• Extended Service Life:Up to 100,000 hours under typical operating conditions.
• Self-Healing Technology:Enhances reliability and prolongs capacitor lifespan.
• Metallized Polypropylene Film Construction:Provides stable electrical performance and low losses.
• Designed for AC Filter Circuits:Suitable for motor drives, UPS systems, and inverter applications.
• THB Version Available:Recommended for outdoor installations and high-humidity environments.

Technical Specifications

• Operating Temperature: -40°C to +105°C
• Rated Voltage: 180–350 Vac
• AC Voltage: 250–480 Vac
• Maximum Continuous DC Voltage: 300–600 Vdc
• Capacitance Range: 33–60 μF
• Capacitance Tolerance: ±5%, ±10%
• Withstand Voltage: 5UN / 3000 Vac
• Insulation Resistance: >3000 s
• Dissipation Factor: <20 × 10^-4
• Standard Compliance: IEC 61071 (GB/T 17702)

Typical Applications

• Variable Frequency Drives (VFDs)
• Motor Drive Systems
• UPS Equipment
• Solar Photovoltaic Inverters
• DC/AC Power Conversion Systems
• LCL Filter Circuits
• Industrial Power Electronics

The WAM Series provides a reliable AC filtering solution for designers and manufacturers seeking long service life, stable electrical performance, and enhanced durability in motor drive and power conversion applications. For outdoor installations or severe humidity conditions, THB-qualified versions offer additional environmental protection.