Automatic Throw Over Systems
Improve Power System Reliability

Automatic Throw Over schemes provide automatic selection of available utility or generator sources to maintain service continuity to connected loads.

Square D Engineering Services provide simple power reliability solutions to extremely sophisticated advanced automatic throw over schemes that include system integration to retrofit power systems with controls for automatic switching between Utility or Generator sources or Generator Paralleling.

• Utility Main-Tie-Main, Main-Main
• Open Transition
• Synchronized momentary open transition
• Utility-Generator schemes
• Momentary Closed Transition
• Extended Closed Transition (ramped load control)
• Maintained Parallel (import/export control)

Advantages:

• Designed by Square D Engineering team that is highly experienced with power equipment and implementing transfer controls
• Supervisory interface can be SCADA for load transfer and generator start/stop
• Compatible with PowerLogic system software that provides web-enabled information access via remote PC for energy and power quality analysis
• Controls based on industrial rated programmable controller with industry defacto standard MODBUS protocol for open system compatibility as well as capable of hot standby for redundancy
• Provides user access to transfer program and time delays
• System can include remote alarm notification to pagers and precise millisecond GPS time stamped sequence of events recording for root cause analysis
• Square D Engineering Services can offer a complete solution including system studies, turnkey installation, system integration and startup.