SD700FL Series – Low Harmonic, Modular Variable Speed Drives with Notch Filter

Premium Low Harmonic and Modular Drive Solution

Overview

The SD700FL Variable Speed Drive enhances the advanced features of the SD700 family with an integrated input notch filter that reduces THDi to below 5%. This is achieved via parallel-connected filtering modules, fully controlled and monitored by the drive for optimized performance.

Each filtering module includes temperature sensors and a contactor that isolates the long-life capacitors when necessary. The contactor is automatically managed by the drive, adapting to motor load conditions, ensuring maximum efficiency and component protection.

Why Choose SD700FL?

• Grid-independent filtering performance:
  • Notch filter operation does not depend on grid impedance, eliminating risks of resonance often associated with passive filters.
  • Consistent low harmonic performance, even if electrical grid conditions change, making it suitable for any low harmonic application.

Key Features & Benefits

• IP54 protection without dust filters for reduced maintenance
• Operation at 50°C without power derating for reliable performance in harsh environments
• Full Frontal Access (FFA) design for easy maintenance and inspection
• Modular power stage and notch filter for flexible and scalable solutions
• Built-in RFI filter for electromagnetic compatibility
• Built-in dV/dt filter:
  • Limits voltage rise to 400V/μs–800V/μs, allowing the use of screened motor cables up to 300 m
• Conformally coated electronics:
  • Built to military and aerospace standards for enhanced durability in demanding environments