SD700 Series – High-Performance Variable Speed Drives

The Core of the SD Family

The SD700 Variable Speed Drive represents the foundation of the SD family, covering a wide power range from 1.2 kW to 2,000 kW and voltage ranges from 230 VAC to 690 VAC, with up to 24-pulse configurations. Designed to meet the needs of general industry and marine applications, SD700 offers IP20 and IP54 mechanical designs, making it one of the most flexible and comprehensive drive series available.

With 11 frame sizes, the SD700 family covers the full power spectrum, ensuring continuous operation in the most demanding environments, and making it a secure investment for both new and retrofit projects.

Key Features & Advantages

• Extensive Power Range: From 1.2 kW to 2,000 kW, fully on-site tested to ensure optimal performance for both small and MW-rated motors.
• Wide Voltage Range:
  • 230 V, 380–500 V, 525 V, and 690 V AC
  • Suitable for weak electrical grids and variable voltage operations.
• Mechanical Designs:
  • IP20 and IP54 enclosures, ensuring long-lasting electronics protection.
• Multi-pulse Options:
  • 12/18/24-pulse systems to meet specific THDi (Total Harmonic Distortion) requirements.
• Built-in Input Chokes (3% impedance):
  • Standard feature to filter grid anomalies and reduce harmonic distortion (THD).
• Standard EMC Input Filter (C3 according to EMC 61800-3):
  • Mitigates electrical disturbances generated by inverter and rectifier stages.
• Braking Options:
  • Internal and external braking units to dissipate regenerated energy during braking cycles.
• Built-in Ultra-Fast Fuses (Frames 5 and above):
  • Protection against unexpected overcurrents for enhanced safety.
• Low dV/dt Design:
  • Protects motor windings and reduces insulation stress.
• GL Certification (Germanischer Lloyd):
  • Certified for marine applications, including vessels, shuttle tankers, cruise ships, and ferries—offering reliability, flexibility, and low maintenance for maritime environments.