Programmable AC power supplies with DC output

3rd September 2018
Alex Lynn

The Preen AFV-P Series of programmable AC power sources with DC output and precision measurement capabilities has been introduced by Saelig Company. These compact power sources come in four power levels: 600, 1,250, 2,500, and 5,000VA, providing clean power with THD less than 0.3% at 50/60Hz. 

They deliver a continuously variable output voltage of 0-310VAC and frequency of 40-500Hz (optionally 15-1000Hz). They are ideal for commercial, defence and aerospace test applications that range from design verification, quality assurance, ATE to mass production. 

The AFV-P series provides comprehensive programmable features (step/ramp/transient) and a total of 1200 test steps in 50 built-in memory sets, as well as a transient generation functionality that allows simulations of voltage variations, surges, sags, dropouts, and frequency disturbances for simulating global AC power conditions. 

With advanced PWM technology, the AFV-P series can deliver up to 4.5 times peak current from its rated output, which is ideal for motor-type tests of inrush current. Users can adjust the starting and ending phase angle from zero to 360°.

Measurement features in the AFV-P series include RMS voltage, RMS current, true power, apparent power, power factor, crest factor, and reactive power. An intuitive five inch touch screen with an additional rotary knob control allows quick adjustments and configurations of voltage, current and frequency. The AFV-P series can also be remotely controlled via standard interfaces. Free control software and a LabVIEW driver are available for easy programming and remote operation.

Product features

  • Compact and high power density: 600V to 2,500VA (2U case) and 5,000VA (4U case).
  • AC source with DC output extends applications to include DC testing.
  • Wide output voltage of 0-310V; output frequency 15-1000Hz
  • THD < 0.3 % when output power is under 100Hz.
  • Inrush current: capable of delivering up to 4.5 times of peak current.
  • Start/End phase angle: define the start and end phase angle from 0 to 360°.
  • Current foldback feature: constant output current when output voltage varies.
  • STEP and RAMP function for voltage and frequency variation tests.
  • TRANSIENT generation provides users an easy setup for power line disturbance (PLD) simulation.
  • Set and view parameters easily via five inch touch panel or rotary knob.
  • Free control software and LabVIEW driver for programming and remote control.
  • High slew rate: less than 300µs for 0 to 90% output voltage.

Housed in an attractive 2U or 4U rackmount case, the AFV-P series of AC/DC power supplies are designed and built by Preen AC Power Corp.

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