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• 1. What power ratings are available for frequency inverters?
• 2. How is the motor connected to the 1-phase frequency inverter?
• 3. When is the 87 Hz characteristic curve used in the inverter?
• 4. Are there favourable single-phase frequency inverters in the range?
• 5. At what frequency does the motor require a forced cooling fan?
• 6. How can the engine noise be reduced?
• 7. Can several motors be operated with one frequency inverter?
• 8. What is the difference between a U/F control and a vector control?