Integrated Expandable DC Power System Delivers Up To 3900W

31st October 2006

ES Admin

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UNIPOWER has introduced an ultra-compact, high-power integrated DC power system designed to offer users a flexible and reliable power source for applications requiring 12, 24 and 48V. As standard, the Gravitas X75 system is a 1RU shelf which holds up to three hot-swappable rectifier modules producing up to 1960W at –54.4 or 1650W at +27.2 or 13.6VDC. 2+1 redundancy with up to 1300W output is possible.

The expanded system adds an additional “expander” shelf making the total height 2RU. The expanded system holds up to six rectifier modules capable of providing up to 3900W. It can be operated with up to 5+1 redundancy at up to 3250W. Each rectifier is cooled by a fan at a speed which is a function of load and temperature.

The new X75 incorporates a high degree of intelligence offering remote control programmed via a PC Web Page over an Ethernet LAN. The controller manages the system rectifiers, monitors the system parameters and has alarms for system failures. These include rectifier problems, AC input alarm and over-voltage and over-temperature conditions.

AC input is a wide 85 to 264V and up to five circuit breaker protected DC outputs or up to 10 GMT fuse protected outputs are available with the base system. A battery string breaker and a low-voltage battery disconnect are standard.

The expander shelf is supplied with the capability to link both shelves and comes with bus bar links to parallel the outputs. The base and expander shelf can be operated as a battery back-up, single feed power system.