What does inverter do for VFD constant pressure booster pump?

• Run at variable speed based on actual water usage
• Reduce pump operating noise
• Reduce energy costs
• Adjust pressure setting
• Extend pump lifetime
• Reduce the size requirement of pressure tanks
• Lower maintenance costs and shorter downtime
• Reduce motor harmonics
• Stabilize current demand 
• Lower power demand on soft startup
• Adjust torque limits

Reference source: 

https://www.edcscotland.co.uk/pages/what-is-a-vsd

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