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Line reactors on VFD line inputs protect drives from current spikes and reduce harmonics. On VFD outputs, reactors or filters are recommended when controlling non-inverter-duty motors. For motor wiring up to 100 feet, a line reactor is acceptable; from 100 to 1,000 feet, an output filter is recommended.
AC Variable Frequency Drives Accessories
Category Selection
AC Line Reactors & Output Filters
Input line reactors protect the AC drive from transient overvoltage conditions typically caused by utility capacitor switching. Input line reactors also reduce the harmonics associated with AC drives and are recommended for all installations.
Output line (load) reactors protect the motor insulation against AC drive short circuits and IGBT reflective wave damage, and also allow the motor to run cooler by "smoothing" the motor current waveform. They are recommended for operating "non-inverter-duty" motors, and for any motors where the length of wiring between the AC drive and motor is less than 100 feet.
For AC Drive-to-Motor wiring distances over 100 feet, use of the VTF series output filter is recommended.
Braking Units and Resistors
Braking resistors are used to increase the braking torque of the AC drive, for frequently repeated ON-OFF cycles of the AC drive, or for decelerating a load with large inertia.
Larger AC drives also require that dynamic braking units be used in conjunction with the appropriate braking resistors.
Software, Comms & I/O Modules
Drive configuration and programming software allows the user to connect to a VFD from a PC for fast, convenient setup and/or programming of a built-in PLC, and offline storage of (multiple) configuration parameters.
Option cards are available to increase the available I/O or add communications capabilities.
Replacement Fans
Replacement cooling fans for drives are direct replacements, dimensionally and electrically equivalent to the original part. Fan electrical loading is included in the input amperage ratings of the drives, and the DC voltage to power the fans is provided internally by the drives.
Remote Keypads, Disconnects, Mounting & Accessories
An assortment of accessories to complete your VFD installation includes:
- Conduit box kits that bolt to the bottom of a VFD to provide conduit entry and a/ NEMA 1 rating without the need to install in a separate enclosure
- Flange mounting kits to extend the heat sinks on the back of the drive through the rear of the enclosure
- EMC shield plates allow motor lead shields to be grounded at the drive
- NEMA 4X disconnect switch provides local on/off control to the GS20X drive
- Remote keypads
- Bezels
- Cables
- Backup power supplies
- Memory modules
- DIN rail mounting adapters
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