Variable Frequency Drive (VFD, also call variable speed drive, adjustable speed drive) converts AC to DC and then from the DC creates an output voltage at an adjustable frequency to run the induction motor at variable speed from 0 to 50Hz/60Hz. The voltage generally varies from 0 to rated input voltage as the speed goes from 0 to 50Hz/60Hz. VFD also can go above 60 Hz up to 400 Hz, but the torque falls off as the speed increases. The biggest advantage that a VFD has is the ability to save money through its inherit nature to save energy by consuming only the power that's needed.
GoHz variable frequency drives include single phase input to single phase output VFD (1/2hp to 5hp), single phase to three phase VFD (1/2hp to 10hp), and three phase input & output VFD (1hp to 300hp), the lowest price starts from $149 with free shipping to global countries, include USA/Canada, UK/Germany/France/Netherlands, India/Pakistan/China/Philippines, Australia/New Zealand etc. See the VFD price list in following tables.
Single Phase Input to Single Phase Output VFD Price List
| VFD Model No. | Price (USD) | Power | Current (A) | Dimensions (mm) | G.W (kg) |
| GK3000-1S0004 | $162.49 | 1/2hp / 0.4kW | 4 | 78*148*125 | 1.2 |
| GK3000-1S0007 | $196.32 | 1hp / 0.75kW | 7 | ||
| GK3000-1S0015 | $248.61 | 2hp / 1.5kW | 9.6 | ||
| GK3000-1S0022 | $317.91 | 3hp / 2.2kW | 15 | 135*240*173 | 4 |
| GK3000-1S0037 | $449.31 | 5hp / 3.7kW | 23 | 170*314*167 | 7 |
Single Phase to Three Phase VFD Price List
| VFD Model No. | Price (USD) | Power | Current (A) | Dimensions (mm) | G.W (kg) |
| GK3000-2S0004 | $149.10 | 1/2hp / 0.4kW | 3 | 142*85*113 | 1.2 |
| GK3000-2S0007 | $159.32 | 1hp / 0.75kW | 4.7 | ||
| GK3000-2S0015 | $183.16 | 2hp / 1.5kW | 7.5 | ||
| GK3000-2S0022 | $238.14 | 3hp / 2.2kW | 10 | 184*98*135 | 2 |
| GK3000-2S0037 | $294.31 | 5hp / 3.7kW | 17 | 230*155*164 | 6.5 |
| GK3000-2S0055 | $697.22 | 7.5hp / 5.5kW | 25 | 339*231*214 | 10.5 |
| GK3000-2S0075 | $992.32 | 10hp / 7.5kW | 32 |
Three Phase VFD Price List
| VFD Model No. | Price (USD) | Power | Current (A) | Dimensions (mm) | G.W (kg) |
| GK3000-4T0007G | $199.15 | 1hp / 0.75kW | 2.5 | 184*98*135 | 2 |
| GK3000-4T0015G | $218.41 | 2hp / 1.5kW | 4 | ||
| GK3000-4T0022G | $259.10 | 3hp / 2.2kW | 6 | 230*118*153 | 3 |
| GK3000-4T0037G | $293.51 | 5hp / 3.7kW | 9.6 | ||
| GK3000-4T0055G | $396.20 | 7.5hp / 5.5kW | 14 | 280*181*183 | 6.5 |
| GK3000-4T0075G | $463.25 | 10hp / 7.5kW | 17 | ||
| GK3000-4T0110G | $593.10 | 15hp / 11kW | 25 | 339*231*214 | 10.5 |
| GK3000-4T0150G | $697.14 | 20hp / 15kW | 32 | ||
| GK3000-4T0185G | $992.18 | 25hp / 18.5kW | 39 | 423*258*230 | 17.5 |
| GK3000-4T0220G | $1264.30 | 30hp / 22kW | 45 | ||
| GK3000-4T0300G | $1497.31 | 40hp / 30kW | 60 | 500*296*276 | 30 |
| GK3000-4T0370G | $1781.14 | 50hp / 37kW | 75 | ||
| GK3000-4T0450G | $2193.10 | 60hp / 45kW | 91 | 560*320*269 | 40 |
| GK3000-4T0550G | $2591.20 | 75hp / 55kW | 112 | ||
| GK3000-4T0750G | $3197.41 | 100hp / 75kW | 150 | 618*398*306 | 50 |
| GK3000-4T0900G | $3147.60 | 125hp / 90kW | 176 | ||
| GK3000-4T1100G | $4683.11 | 150hp / 110kW | 210 | 760*485*324 | 85 |
| GK3000-4T1320G | $5960.35 | 180hp / 132kW | 253 | ||
| GK3000-4T1600G | $6499.23 | 200hp / 160kW | 304 | 1440*600*399 | 180 |
| GK3000-4T1850G | $8689.91 | 250hp / 185kW | 355 | ||
| GK3000-4T2200G | $9813.41 | 300hp / 220kW | 426 |
* Above listed price may be different with the selling price, go to the VFD shopping page to see the selling prices, and VFD can be customized.
Tips: a couple of questions before you buying a VFD:
- Does the process actually require relatively infinite speed adjustment?
- Is it going to operate as a variable torque application - with significant time at multiple operating speeds/loads?
- Is there sufficient space (in fairly close proximity to the motor) to install a VFD?
- Is the motor itself capable of operating at less-than-full speed and/or able to withstand the voltage waveform generated by the specific VFD selection?
- Can the distribution system in general (and the specific branch in particular) handle the increased harmonic content resulting from a nonlinear load (e.g. the VFD)?
If the answer to any of these is "NO", then a VFD is not the best solution, you may consider to buy a much economic soft starter instead.
Related article: GoHz Soft Starter Price List.
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