Class-leading low-harmonic VFD’s with revolutionary features such as ducted cooling and voltage-doubling.
3LH Series drives have an active switching input module that limits harmonic distortion on the power input. These drives are IEEE-519 compliant with no additional harmonic filters required. The active front end also provides the added benefit of power conditioning for the VFD. This allows the user to set and maintain output voltage even in the presence of weak utility voltage.
LH-series drives were designed specifically for the water well industry and provide features not found anywhere else. Configure a 3LH for your application with our product builder.
Superior Heat Rejection
Our innovative cooling design utilizes outside air in a compartment segregated from any sensitive electronics. This design eliminates the risk of contaminated air entering the electronics areas and ultimately prolongs the life and improves the efficiency of internal components.
Voltage Doubling
Significant Installation Cost Savings
Designed For Deep Set Wells
& Long Lead Applications
- Eliminate the need for a costly transformer
- Significantly reduce installation costs
- Smaller motor cable & well size requirements
- Voltage control for deep wells
3LH Model Comparison
Standard Features |
3LHE Enterprise Chassis Up to 50 Horsepower |
3LHS Signature Chassis Up to 200 Horsepower |
3LH Performance Chassis Up to 700 Horsepower |
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| NEMA 3R Outdoor Enclosure | |||
| Large display, readable in direct sunlight | |||
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50°C (122°F) Rated Ready to be exterior mounted, even in harsh climates |
1 |
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| Up to 50 Horsepower | |||
| Up to 200 Horsepower | |||
| Up to 700 Horsepower |
Optional Features |
3LHE Enterprise Chassis Up to 50 Horsepower |
3LHS Signature Chassis Up to 200 Horsepower |
3LH Performance Chassis Up to 700 Horsepower |
|---|---|---|---|
| Voltage Doubling | |||
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Panel Shop: Service Disconnect Make maintenance easy and meet code without an external disconnect |
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Panel Shop: HOA Switch and/or Speed Pot |
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Panel Shop: Run and Fault Indicator Lights |
2 |
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Panel Shop: dV/dT Output Filter Protect your motor, especially in long lead installs |
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Panel Shop: Sine Wave Output Filter Protect your motor, especially in extra long lead installs |
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Panel Shop: Strikesorb Surge Protection Multiple-hit protection, the best available |
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Panel Shop: System Bypass Ensure constant uptime with a bypass, includes MCCB |
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Panel Shop: Pad Mount Leg Kit Mount the VFD to a concrete pad |
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| See the 3LH Enterprise | See the 3LH Signature & Performance | ||
1. Most models are 50°C (122°F) rated, some models may be 40°C rated.
2. Enterprise models are available with a Run or Fault light, but not both.
Our product builder will help you build and price a VFD for your application based on the horsepower of your pump.
Not sure? Contact our sales department and let us help you select the right variable frequency drive for your application.
Contact UsEasy Setup
Perfect Pressure™ only requires a few minutes of setup time and is capable of controlling complicated constant pressure plumbing systems with ease and fewer instances of short cycling.
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