Astrodyne TDI Mercury-Flex programmable AC/DC power supply

The Mercury-Flex programmable AC/DC power supply, from Astrodyne TDI, provides 3.8 kW of power digitally controlled as either a current or voltage source up to 400 V or 170 A. The product is a suitable rectifier for applications that require a flexible, digitally controlled industrial power supply.

It features a universal 90 to 264 VAC 50/60 Hz single-phase input and a wide choice of adjustable DC output voltage range models: 0–28, 0–56, 0–85, 0–125 and 0–400 V. Power conversion techniques deliver efficiency of up to 93%, with a power factor of 0.97 or better. Additionally, the series features a fixed 14 VDC auxiliary output, useful for powering miscellaneous user circuits.

Using the digital CAN-Bus or ethernet interface, the device can be factory preset or field programmed to operate in a constant voltage, constant current or constant power mode. The digital read-back feature provides output voltage and current values, operating temperature and protection alarm status. For higher power applications, the rectifier can be connected into parallel current sharing groups with the aid of a four-module shelf assembly, enabling designs of upwards to 228 kW in a single universal 19″ rack.