Enhanced AC power supplies have wide output frequency range

Telonic Instruments has added Kikusui’s PCR-MA enhanced AC power supply series to its portfolio.

Models in the PCR-MA range provide output power from 500 to 4000W in a voltage range from 0 to 310V rms. The wide output frequency range covers 40 to 500Hz, which includes the aviation frequency of 400Hz. Additionally, the unit can also supply DC (±0-438V).

Unlike many AC sources, the output waveform is generated using pulse width modulation (PWM) and digital signal processing (DSP), meaning that the sine wave is very low in distortion (unlike the near-square wave output of some other manufacturers), explains Telonic Instruments.

Output voltage and frequency are infinitely variable, with the output on or off. The output start phase can be set along with many over-voltage/current safety features. Another feature is the auto-ranging function.

Single phase input and an input voltage range that runs from 100 to 240V enable all the mains voltages in the world to be replicated including: 120V 60Hz; 230V 50Hz. Software supplied with the power supply allows detailed recording of load details.

Control can be front panel, remote via Ethernet/LXI or USB plus an RS232C option. There is also a web-browser for internet control.

Inrush currents can often stump AC converters, but these units can drive up to three times their rated rms current for a limited time. This is particularly useful in starting motors, points out Telonic.

The range consists of the PCR500MA (500VA), PCR1000MA (1kVA), PCR2000MA (2kVA) and PCR4000MA (4kVA) models.

Telonic Instruments Ltd are Kikusui’s authorised dealer in the UK and Southern Ireland.

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