VFDs for generator-powered motor starting
When your motor is powered from a generator, a properly selected VFD reduces inrush current and improves startup stability. This is critical for pumps, fans, compressors, and process equipment sensitive to voltage dips.
Related collections: for pumps, for fans, for motors.
How to choose a VFD for operation from a generator
Use a generator power margin of at least 25-35% above drive nominal power, and 40-50% for hard-start applications. Check input voltage/phase compatibility, undervoltage protection limits, and acceleration ramp settings.
| Model | Brand | Power | Input | Typical use |
|---|---|---|---|---|
| AC10-T3-1R5G-B | Veichi | 1.5 kW | 3x380 V | Pumps, fans, general industrial |
| VFD055E43A | Delta Electronics | 5.5 kW | 3x380 V | Variable load operation |
| GD20-004G-4 | INVT | 4 kW | 3x380 V | Industrial automation |
| 132F0026 | Danfoss | 0.75 kW | 3x380 V | Energy-efficient systems |
| FR-D740-036SC-EC | Mitsubishi Electric | 1.5 kW | 3x380 V | Reliable startup and protection |
Popular brands for generator startup tasks
Based on 12-month sales data: Veichi, Delta Electronics, INVT, Danfoss, Mitsubishi Electric.
Useful preset pages: single-phase 220V, three-phase 380V, vector control drives.
Filter by key parameters
Quick filters: 0.75 kW, 1.5 kW, 2.2 kW, 1x220 V, 3x380 V.
FAQ
What generator margin is recommended for a VFD?
Typically 25-35% above drive nominal power, and up to 40-50% for hard-start loads.
Can a VFD run with fluctuating generator voltage?
Yes, if protection thresholds and acceleration ramps are configured correctly.
V/F or vector control for generator supply?
V/F is often enough for pumps and fans; vector control is preferred for demanding torque conditions.
Why does the generator drop during startup?
Most cases are caused by insufficient generator reserve or too aggressive acceleration settings.
Warranty, support, payment and delivery
We help with model selection, generator compatibility checks, and commissioning support. Nationwide delivery across Ukraine with VAT invoicing available.
