A variable frequency drive is utilized for adjusting a flow or pressure to the actual demand. It controls the frequency of the electrical power supplied to a pump or a fan. Substantial power savings can be achieved when using a variable frequency drive inverter.
It is a system for controlling the rotational speed of an alternating current electric motor. It controls the frequency of the electrical power supplied to the motor. A variable frequency inverter is a specific type of adjustable-speed drive.
Automatic frequency control consist of a primary electrical circuit converting the alternating current into a direct current, then converting it back into an alternating current with the required frequency. Internal energy loss in the automatic frequency control is rated 3.5%.
Variable frequency inverters are mostly used on pumps and machine tool drives, compressors and in ventilation systems for large buildings. Variable frequency motors on fans save energy by allowing the volume of air moved to match the system demand.
Reasons for employing both automatic frequency control can both be related to the functionality of the application and saving energy.
At Gator Products we hold stock and supply three ranges of Senlan variable frequency inverters. Various applications each require a unique VSD range to account for their specifications and design.
Senlan SB200 Series – V/F type drive ideal for pumps and fan type applications (variable torque)
- 400VAC 3P Input to 400VAC 3P Output in power band 1.5kW to 400kW
Senlan SB70G Series – Vector Flux drive ideal for constant torque or high torque at low speed applications
- 230VAC 1P Input to 230VAC 3P Output in power sizes 0.55, 0.75, 1.5 and 2.2kW
- 400Vac 3P Input to 400VAC 3P Output in power sizes 0.55kW to 1100kW
Senlan SB150 Series – An economy range of VSD’s available in the following formats
- 230VAC 1P Input to 230VAC 3P Output in power output sizes of 0.4, 0.75 and 1.1kW
- 400VAC 3P Input to 400VAC 3P Output in power output sizes of 0.4, 0.75, 1,5, 2.2 and 4.0kW