Water Systems
Constant-pressure drives and pump controls for wells, irrigation and municipal water systems.
Built In The USA
Proudly American Made
Every Phase drive is engineered, assembled and tested at our Rapid City, South Dakota headquarters — with the industry’s fastest lead times.
BABA Compliant · Build America, Buy America
Knowledge Base
Know Your Equipment
Phase ConversionWhat Is Phase Conversion?How single-phase power is converted to utility-quality three-phase. Compare static, rotary, and Phase Perfect® digital converters — and when to use a VFD.Read More →Power QualityVoltage Balance: Life or Death for Your MotorVoltage imbalance overheats and destroys three-phase motors. Learn how to measure it (NEMA formula), why heat halves motor life, and how digital conversion restores balance.Read More →Solutions · Water SystemsPerfect Pressure™ Constant Pressure ControlPerfect Pressure™ holds water systems at a steady setpoint with a 4-step VFD wizard — no PID tuning, no short cycling, no external controller. See how it works.Read More →Power QualityLow Harmonics & IEEE 519What harmonics are, why they damage power systems, and how Phase Technologies' LHX Series drives limit harmonic distortion for IEEE 519 compliance.Read More →