AC power sourceB&K Precision introduced model 1657, an AC power source. It delivers up to 1500 VA in two selectable output voltage ranges of 135 VAC or 270 VAC, at frequencies from 45 Hz to 450 Hz. With a standard 19" rack-mountable design, this new AC power source is suitable for automated test environments and provides a complete solution for industrial product testing applications in design and manufacturing. The company asserts settable voltage and frequency parameters in AC sources are an absolute necessity for input voltage margin testing at 50 Hz and 60 Hz, or in avionics testing where equipment is operated at the 400 Hz range. The power source offers a universal line output terminal and built-in PFC to provide an input power factor of 0.99 at full load. Voltage and frequency parameters are set via the front panel’s control knob, paired with a bright VFD display that continuously displays the output voltage, current, power, and frequency with a 0.1 V/0.01 A/1 W/0.01 The unit provides automatic protection against overload, short circuit, and overtemperature conditions indicated by an alarm LED, as well as a convenient output On/Off switch for additional safety.

B&K Precision