Variable Frequency Drives & Digital Phase Converters


Phase-Converting Variable Frequency Drives

1LHS4xxR  20 - 50 HP

Signature Series w/active front end technology. Shown w/optional pad mount kit. (#LEGS07)

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1LHS Series drives have a unique active switching input module that does not produce high levels of harmonic distortion. These drives are IEEE 519 compliant with no additional harmonic filter required. The active front end also provides the added benefit of power conditioning for the VFD. This allows the user to set the output voltage and control the pump without concern for utility power fluctuations.

1LHS Series drives utilize a single-phase active front end to convert the 460/480V single-phase input and generate 460/480V three-phase output. This innovative capability eliminates the cost of a phase converter and provides significant cost reduction by not having to derate the drive. Phase Technologies now manufactures optional integrated dv/dt and sine filters at a fraction of industry cost to further reduce expenses associated with long lead installations.

Industries served: Wells Pumps, Irrigation Pumps, Motor Control

Standard Features
  • NEMA 3R Enclosure w/Insect Guards
  • Easy Perfect Pressure™ Setup
  • 2-Year Warranty
  • 122° F (50° C) Rated
  • Easy Field Serviceability
  • IEEE 519 Compliant


Optional Add-Ons
  • MCCB & Service Rated Disconnect
  • Dv/dt Output Filter (Integrated)
  • Sine Wave output Filter (Integrated)
  • HOA & Speed Potentiometer
  • Strikesorb Surge Protection
  • 0 - 150 psi Transducer
  • Pad Mount Kit


Models: 1LHS420R 1LHS430R 1LHS440R 1LHS450R 1LHS460R 1LHS475R 1LHS4100R
General Power Specs              
Rated HP 20 HP 30 HP 40 HP 50 HP 60 HP 75 HP 100 HP
Rated Input Current 48A 72A 98A 121A 143A 170A 226A
Input Voltage 460/480V, single-phase
Rated Output Current 31A 46A 61A 77A 91A 107A 142A
Output Voltage 460/480V, three-phase
Other Specs              
Recommended Breaker Size 80A 100A 150A 175A 200A 250A 300A
Min Wire Size N/A N/A N/A N/A N/A N/A N/A
Enclosure size (H x W x D) 51 x 16 x 18" 51 x 16 x 18" 51 x 16 x 18" 51 x 16 x 18" 70 x 24 x 24" 70 x 24 x 24" 70 x 24 x 24"
Shipping Weight 165 lbs 168 lbs 172 lbs 175 lbs 245 lbs 313 lbs 391 lbs
Shipping Type Freight Freight Freight Freight Freight Freight Freight