Variable Frequency Drives & Digital Phase Converters


Three-Phase Active Front End Variable Frequency Drives

3LHS4xxxR 125 - 200 HP

3LHS Signature Series, VFD’s utilize active front end (AFE) technology to strictly comply with low harmonic standards, regenerate power back on the grid, and control unbalanced three phase without over sizing.

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3LH 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 and Aux Power outputs. This allows the user to set the output voltage and control both the pump and pivot without concern for utility power fluctuations.

An optional Voltage doubling 3LH Series drive utilizes a three-phase active front end to boost the 208/240V input and generate 460V three-phase output. This innovative capability eliminates the cost of a transformer and provides significant cost reduction in submersible or long lead applications by reducing the size of down-hole motor cables. Phase Technologies now manufactures optional 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 (LEGS08)


Models: 3LHS4125R 3LHS4150R 3LHS4200R
General Power Specs      
Rated HP 125 HP 150 HP 200 HP
Rated Input Current 172A 198A 250A
Input Voltage 460/480V, three-phase
Rated Output Current 172A 198A 250A
Output Voltage 460/480V, three-phase
Other Specs      
Recommended Breaker Size 200A 300A 400A
Enclosure size (H x W x D) 42 x 71 x 24" 42 x 71 x 24" 42 x 71 x 24"
Shipping Weight 472 lbs 541 lbs 623 lbs
Shipping Type Freight Freight Freight


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