The Diamond Plusâ„¢ 1100 UPS Series is an optimal solution for protecting power equipment. As a true on-line three phase double conversion UPS system, customers can be assured that their needs are met for back-up power . With energy costs ever increasing in the marketplace, the DiamondPlusâ„¢ 1100 provides a reduced Total Cost of Ownership with its compact footprint, high energy efficiency and flexible modular design, among other factors. With reliable back-up power in place, our customers can have complete piece of mind.