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Engineering guide

VFD vs VSD: Same Drive Family, Different Buyer Language

This guide compares VFD and VSD only through Boray catalog names: Variable Frequency Drive, Vector Inverter, Pump AC Drive, Solar Pump Inverter, and Soft Starter labels. It avoids specs, certifications, and prices.

VFD in Boray Catalog Names

The Boray catalog names VFD directly in entries such as BR100 Variable Frequency Drive, FD500 Distributed Inverter, BR300-IP54 Smart Water Pump VFD, and SD300 VFD for Outdoor Pumps. These labels show where the catalog uses VFD terminology.

VSD as a Buyer-Side Term

The catalog does not list a product name containing VSD. Instead, it uses Variable Frequency Drive and Vector Inverter names, such as BR110 Universal High-Performance Vector Inverter and AD1000PLUS High-Performance Vector Inverter, to describe related drive families.

Where VFD and VSD Language Overlap

When a buyer uses VFD and VSD for the same drive family, Boray catalog names can still differ. BR100 Variable Frequency Drive is a VFD name, while BR110 Universal High-Performance Vector Inverter is an inverter name. FS200 Series Intelligent Pump AC Drive and FS300 Series Intelligent Pump AC Drive use drive-oriented naming.

When the Terms Are Not Interchangeable

If the requirement is soft starting rather than drive control, use Boray soft starter names: GE300 Online Soft Starter Without Bypass, ST300 Online Soft Starter Cabinet, ST200 Online Intelligent Soft Starter Without Bypass, and ST100 Bypass Soft Initiator. These are not named VFDs in the catalog.

How to Choose by Catalog Name

Use BR100 Variable Frequency Drive or BR110 Universal High-Performance Vector Inverter when the buyer says VFD or VSD for general drive control. Use solar pump inverter names such as BR600-P Solar Pump Inverter, BR500-P Solar Pump Inverter, FD600 High Protection Solar Pump Inverter, or BR110-P Universal High-Performance Solar Vector Inverter when the application is solar pump control.

Apply this to your project

Send the motor ratings, duty and site conditions and Boray will specify the series.

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