What “Variable Frequency Drive with Single-Phase Input” means on an RFQ
Single-phase input VFDs are chosen when the supply is 1φ but the motor is 3φ — derating and DC-bus ripple limits matter more than the brochure kW.
RFQ data that locks voltage and power class
State supply voltage, available amps, motor kW/FLA and whether the site can ever get a 3φ upgrade; that forks frame size and series.
Control functions that change field behaviour
Confirm input current, DC choke need and whether the control mode is simple V/f for a pump/fan or vector for higher torque.
Site, EMC and protection notes
Rural panels need honest ambient derating and surge protection; single-phase farms often sit at the end of a weak feeder.
How Boray series map to this topic
Shortlist BR100 / BR110 frames that accept 1φ input at the required motor kW; do not assume every 3φ catalog rating applies on 1φ.
Next step with Boray
Send the nameplate photo, duty description and site photos for “Variable Frequency Drive with Single-Phase Input”. Engineering will confirm series and options.
