GWInstek introduces APS-7000 series programmable AC power supplies. The APS-7000 series has power characteristics of linear structure design, including low noise, low THD and highly stabilised output power that are ideal for product development and verification of low noise input power or stereo, video and audio device applications, etc. The maximum rated voltage is 0 ~ 310Vrms, 25.2Arms, 100.8A peak current and the output frequency range is 45 ~ 500.0Hz. Users can easily increase the output voltage from 0Vrms to 600Vrms and the output frequency from 45Hz to 999.9Hz by purchasing options without sending equipment back to GW Instek. One of the popular alternative energy solutions on the market is to use the inverter to convert DC to AC and the converted AC is then sent to the grid or products require electricity. For example, AC produced by the PV inverter is sent to the grid or equipment requires electricity. Although the grid is simulated to verify that the inverter connects to the grid, general AC power sources cannot withstand the feedback energy of the DUT. Therefore, additional power consumption resistors are needed to prevent the AC power source from being damaged. On the contrary, the APS-7000 series has the ability to absorb reverse current, so additional current consumption resistors are not needed. The input terminal of the APS-7000 series is designed to isolate from the simulated AC current output terminal, therefore users do not need an additional isolation device to protect DUT. The APS-7000 series is suitable for simulating the power grid and performing characteristic tests of the inverter output, including synchronised phase and frequency. Reverse current and power detected by the APS-7000 series are displayed in red readings to facilitate the user's test observation. APS-7000 series uses simulation mode and sequence mode to provide single step or sequential power changes; and to simulate voltage drift test and frequency drift test.
