USVF-23D | US Electric Single Phase to Three Phase Inverter 1/2 hp 230V

USVF-23D | US Electric Single Phase to Three Phase Inverter 1/2 hp 230V

The USVF-23D is a single-phase to three-phase inverter designed to operate standard 208/230V three-phase AC motors using a 230V single-phase input. It replaces the KB Electronics KBVF-23D and is ideal for powering three-phase machinery such as mills, lathes, and drill presses in environments with single-phase power availability.

Key Specifications

• Horsepower: 1/2 HP
• Voltage: 230V
• Amperage: Max 2.4 Output Amps @ 230V

Product Features & Fitment

This inverter delivers 100% three-phase power output with over 200% starting torque, enabling reliable motor startup and operation. It includes a speed potentiometer for adjustable speed control and jumper selections for forward-stop-reverse and enable-automatic-manual modes. The unit supports both 50Hz and 60Hz motors with convenient jumper settings and features sinewave-coded PWM for efficient, quiet motor operation at a 16 kHz switching frequency.

For installation, the motor must be wired directly to the inverter terminals, bypassing any existing motor starters or switches to prevent damage. The speed potentiometer must be connected; otherwise, the motor will not run and may be damaged. The inverter should be powered through an electric power disconnect. Note that motor amperage must not exceed the inverter’s rated output, and fan-cooled (TEFC) motors require load reduction at lower speeds to prevent overheating. This inverter is not recommended for air compressor applications.

Cross Reference

• KB Electronics KBVF-23D

Warranty

• Users Manual
• Brochure