Buy Variable Frequency Drives Online in Australia
What is a variable frequency drive (VFD)?
A variable frequency drive (VFD) is an electronic motor controller that changes the speed of an AC induction motor by varying the frequency and voltage supplied to it. VFDs deliver soft starting, adjustable speed control, energy savings on variable-torque loads and built-in motor protection. AIMS Industrial supplies Invertek TECDriveAC and TTA series drives in single-phase and three-phase configurations across IP20, IP55 and IP66 enclosure ratings.
What is a VFD used for?
VFDs are used on pumps, fans, compressors, conveyors and mixers — any application where motor speed needs to vary or where the high starting current of direct-on-line starting must be avoided. On variable-torque loads like pumps and fans, VFDs can reduce energy consumption substantially compared with throttling or damper control.
How do you size a VFD?
Match the VFD's kilowatt rating to the motor's kilowatt rating and the supply voltage (single-phase 240V or three-phase 380-480V). For high-inertia or high-overload applications, the VFD is typically sized one frame above the motor. Confirm the enclosure IP rating matches the installation environment — IP66 is required for direct outdoor or washdown use.
VFD Selection — Quick Reference (Invertek Range)
Variable Frequency Drives (VFDs) control AC induction motor speed via PWM output. Selection turns on supply voltage (single 240V vs three-phase 415V), motor kW rating, enclosure protection (IP rating), and whether a built-in isolator is needed for safe maintenance.
| VFD Model | Input Supply | IP Rating | Best For |
|---|---|---|---|
| TECDriveAC — Single Phase 240V Input | 1Ph 240V → 3Ph motor output | IP20 (panel mount) | Domestic/light commercial supply running 3-phase motor — workshop default |
| TECDriveAC — 3Ph 380-480V IP20 | 3Ph 415V | IP20 (panel mount) | Switchboard install — protected indoor environment |
| TECDriveAC E3 — IP66 | 3Ph 380-480V | IP66 (sealed) | DIRECT MOTOR MOUNT — no enclosure needed, outdoor + washdown |
| TTA P2 — IP55 | 3Ph 380-480V | IP55 (dust/water resistant) | Industrial environments, moderate exposure |
| TTA E3 — IP66 + Switched | 3Ph 380-480V | IP66 (sealed) | Harsh industrial, washdown, integrated mains isolator for safe maintenance |
Energy savings: 20–50% typical on variable-torque loads (pumps, fans) per the Affinity Laws (power varies with cube of speed). Soft start: dramatically reduces starting current vs DOL (Direct On Line), protects motor + electrical infrastructure. Sizing: match VFD kW ≥ motor kW; for high-inertia or high-overload, oversize by 1 frame. Applications: pumps, fans, compressors, conveyors, mixers. Companion: electric motors, Invertek brand range, electric motor guide.
Variable Frequency Drives (VFDs)
AIMS Industrial supplies Invertek variable frequency drives for controlling the speed of AC induction motors in industrial and commercial applications. VFDs deliver energy savings, smooth motor starting, adjustable speed control and motor protection in a compact, reliable package.
TECDriveAC Series
The TECDriveAC range covers single phase 240V input (for single phase supply environments) and three phase 380–480V input configurations. Available in IP20 (panel mount) and IP66 (sealed enclosure) protection ratings, suiting indoor switchboard installations through to outdoor and wash-down environments. The E3 IP66 version allows direct motor-mounting without a separate enclosure.
TTA Series
The TTA series provides three phase 380–480V drives in P2 IP55 and E3 IP66 configurations with both switched and non-switched options. The robust IP66 enclosure is rated for harsh industrial environments including dust, moisture and hose-down cleaning. Switched variants integrate a mains isolator for safe maintenance without additional switchgear.
Applications
VFDs are used across pumps, fans, compressors, conveyor drives, mixers and any application where motor speed control or soft starting is required. Starting current is dramatically reduced compared to direct-on-line starting, which protects both equipment and electrical infrastructure. Energy savings of 20–50% are typical in variable-torque applications such as pumps and fans.
Buying Guide
Match the VFD to your motor's kW rating and supply voltage. Ensure the enclosure IP rating suits the installation environment. For applications in dirty or wet locations, IP66 drives eliminate the need for a separate control panel enclosure. Contact our team for sizing and compatibility assistance.