Redundant Power for Racks With Clustered 1U Servers

September 6, 2016 Tripp Lite
Tripp Lite

At capacities of 5kW and above, the most practical way to provide redundant power to 208V server racks has been to connect redundant 3-phase rack PDUs to redundant power supplies in each server. Until now…

Traditional Dual 3-Phase PDU Solution vs. 3-Phase ATS PDU Solution

Challenge: Provide redundant power to a rack that has clustered 1U servers

Traditional Dual PDU Solution Tripp Lite
ATS Solution
Two 3-phase rack PDUs feed
single phase 208V loads
3-phase rack ATS feeds
single phase 208V loads
Two power supplies per server One power supply per server; the Tripp Lite ATS provides redundant power to each server power supply, so a second power supply is not required.
Two power cords per server One power cord per server
The Tripp Lite Advantage
  • Simplified network management with a single ATS per rack to monitor
  • Fewer power supplies to purchase
  • 2–4% gain in efficiency, depending on the power supply used(1)
  • Reduced electricity costs
  • Reduced cooling costs
  • Fewer power cords to purchase
  • Simplified cable management
  • Improved airflow, allowing servers to run cooler and last longer
  • Improved service access


    From desktop to critical infrastructure, Tripp Lite products and solutions power and connect the computers, networking equipment and electronic devices that form the foundation of our digital world. Headquartered in Chicago since 1922, Tripp Lite has offices and partners worldwide.

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