Power supplies: B&K Precision
B&K Precision is offering three new models of its high power programmable DC power supplies, models PVS10005, PVS60085, and PVS60085MR. The new PVS Series delivers output power up to 5.1 kW. The company says they deliver excellent regulation, low noise, and fast transient response times. All models provide a built-in solar array simulator (SAS) function to generate photovoltaic I-V curves. Offering high-power density in a compact 2U form factor, these DC power supplies are suitable for high voltage testing up to 1000 V, motor inverter testing, and solar array testing applications.
To maximize solar power efficiency, a solar inverter’s MPPT algorithm must be tested under various irradiance conditions. With the optional SAS software application, PVS Series users can simulate solar arrays under different weather conditions during a day to validate the effectiveness of the solar inverter. The SAS software allows for a variety of I-V curve input parameters along with user-definable irradiance profiles and a custom 1,024-point voltage and current table. This software can also monitor and log real-time voltage, current, power, MPPT efficiency, and average MPPT efficiency.
Users looking to replace multiple supplies on a bench or rack can benefit from model PVS60085MR, which offers multi-ranging operation up to 3 kW. This model shares the same voltage and current ranges of the PVS60085 and automatically recalculates voltage and current limits. Furthermore, users can select model PVS10005 for high voltage testing up to 1,000 V at 5 A. Unlike other high power supplies that require a 3-phase AC line input, these power supplies only need a single-phase mains connection.
Front panel features for the PVS Series include a bright VFD display, protection LED indicators, and numerical keypad with rotary control knob and cursors for quickly setting output levels. Each model provides internal memory storage to save and recall up to 100 instrument settings.