For maximum availability applications, Liebert STS2 static transfer switch provides an automatic, seamless transfer between your critical load and the outputs of two independent UPS systems in a dual-bus power configuration. If the primary UPS should fail, the switch will automatically transfer the loads to the alternate UPS.
Features
- Automatic switching for dual bus loads
- Patented Optimized Transfer option
- Matches first generation Liebert STS1 footprint while optimizing conduit landings
- Accepts existing Liebert STS1 ancillary accessories and sidecar cabinets
- Offers primary or secondary side switching
- 100% rated, fuseless design
- Top and bottom cable entry/exit
- Unity communication network card
Benefits
- Ideal replacement for first generation Liebert STS1 switches
- Operates efficiently
- Optimized transfer algorithm ensures smooth, safe power switching
- Internal CANBUS protocol: high-bandwidth communication between system components via twisted-pair cables.
- Triple redundant logic with dual power feeds.
- Standard on-unit monitoring and optional centralized monitoring capability provide continuous system visibility.
- When applied as primary side switching, cost are lower due to requiring only one power distribution unit, a lower current due to 480V vs. 208V, and lower installation and wiring cost.