AC Power For Business-Critical Continuity™ Liebert ® STS2 Static Transfer Switch2 The Cornerstone of High-Availability Power Systems
The Power to Protect Your Critical Operations For maximum availability applications, the Liebert Static Transfer Switch2 (STS2) 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. Liebert is the market leader in dual-bus power systems, building the world’s most reliable UPS and Static Transfer Switch products.
True Front-Access Design All mechanical and electronic components of the Liebert STS2 are accessible from the front of the unit for installation and service—no side or rear access required. This gives you several immediate benefits: Greater freedom in system design. The Liebert STS2 can be placed adjacent to or in back of other equipment. It can also be placed against a wall or partition. Simplified installation, with ample space for cable connections through top and bottom access plates.
Optimized Transfer Option Enhances Cost-Efficient System Operation Liebert offers a patented optimized transfer option for the Liebert STS2 that greatly improves operation when used in primary side switching applications. Figure 1 Standard STS2 transfer Figures 1 and 2 show results for the standard STS2 vs. the optimized STS2 for the same condition (alternate source lags 120 degrees) respectively.
Figure 2 Optimized STS transfer Liebert’s transfer control does more than balance the flux. Due to our unique approach to the optimized transfer algorithm, transfer time should not be the only performance measure for this new optimized switch. Liebert’s method, whenever possible, also seeks to minimize voltage disturbances while maintaining transformer flux balance. It takes both voltage disturbance and volt-second balance into consideration.
Liebert STS2 Communication and Product Options Liebert STS2 has a wide choice of monitoring and communications options to keep you connected to your critical power protection system. Seismic Anchors — To ensure stability for the unit in the event of seismic activity, anchors are available for securing the unit to a concrete floor to meet seismic Zone 4 requirements.
Critical Space Support from Emerson Network Power Service Total Service Capability Remote Monitoring — Always There, Always Alert Emerson Network Power Service provides a Basic, Essential and Preferred level of maintenance and service that allows you to select the complement of critical power system services that best fits your requirements. These programs include guaranteed four-hour response time, emergency service and preventive maintenance.
Ensuring The High Availability Of Mission-Critical Data And Applications. Specifications Heat Amp Output Rating (KW) Liebert Corporation Uncrated Dimensions (WxDxH) (inches) (mm) 100 0.8 30x32x77 762x813x1956 250 1.37 30x32x77 400 2.04 38x32x77 600 3.08 800 1000 Uncrated Weight (lbs) (kg) Shipping Dimensions1 (WxDxH) (inches) (mm) 780 354 48x44x82 1016x1194x2082 762x813x1956 780 354 48x44x82 965x813x1956 1200 544 48x44x82 38x32x77 965x813x1956 1200 544 4.
