1. Introduction to ATS Scott Kolek – ATS Global Product Manager 2006 Annual Power Quality Meeting

2. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 2 G What is an Automatic Transfer Switch (ATS) ? An ATS is a device designed to Automatically switch (transfer) between (2) sources of power to improve the reliability of the electrical supply to a connected load. Primary Source (typically a Utility Supply or Utility Bus) (Normally Energized) Backup Source (typically a Generator Supply (Normally De- Energized)

3. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 3 ATS...An integral part of the Power Quality Solution UPS ATS TVSS PSG Automatic Transfer Switches (ATS) provide 2 sources of power to life and business critical loads, including UPS Power Quality Equipment Deregulation, Shortage, Limited Infrastructure = Unreliable & cost up Dependent on availability and reliability of electrical energy 99.9% 99.9999 Bridge the Gap (8 hours/yr downtime) (1 second/yr downtime) 99.9% 99.9999 Bridge the Gap (8 hours/yr downtime) (1 second/yr downtime) Utility Power “Digital World” Life Safety Loads Business Critical Loads Primary Power Source Backup Power Source

4. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 4 Typical Applications of ATS Utility and Engine Generator  Single unit standby applications are very common Utility and Utility  Dual utility applications are becoming more common Generator and Generator  Prime power / standby application

5. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 5 Standard Transition (No Center Position) Delayed Transition (With Center OFF Position) NOTE: “OFF” Position indicates Neither Source connected Closed Transition (Make-Before-Break Operation) NOTE: “P” Position indicates both sources paralleled for 5 cycles Standard Transfer Switch: Types

6. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 6 Standard Transition (No Center Position ) Delayed Transition (With Center OFF Position) NOTE: “OFF” Position indicates Neither Source connected Closed Transition (Make-Before-Break Operation) NOTE: “P” Position indicates both sources paralleled for 5 cycles Bypass ATS Standard ATS Bypass Transfer Switches: Types

7. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 7 GE Zenith Range of ATS - Overview ZTX Series  Residential/Light Commercial applications  40-400 Amp & 120-480 Volt ratings  2, 3, or 4-Pole ZTG series  Pre-Engineered & Standard applications requiring dependability and ease of operation  Standard & Delayed Transition  40-3000 Amp & 120-600 Volt ratings  2, 3 or 4-Pole ZTS series  Spec Grade & Custom applications  Standard, Delayed, Closed Transition  Bypass versions available with all Transition modes  40-4000 Amp ratings 120-600 Volt ratings  2, 3 or 4-Pole

8. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 8 Key Competitors & Differentiators – Europe & ME ASCO/ Emerson Socomec/ FG Wilson GE Zenith CB-Type (Schneider, Siemens, ABB) IEC Certified as tested for high duty cycles & reliability – as ATS (IEC 60947-6-1, 2005) Power Continuity under adverse conditions (overloads, fault withstand) Genset and Panelbuilder OEM focus – products & services tailored to OEM needs. IEC Rated Frequent (33A) operation. Self-cert 1998. 3 rd Party Cert to new 2005 Std + CE Mark by 12/06 Full 3 cycle SC withstands, 10x Overload switching Upstream CL fuses Req’d IEC Rated Frequent (33A) operation. 3 rd party Cert 1998 Std IEC Rated Infrequent (33B) operation Full 3 cycle SC withstands, 10x Overload switching CAT, Cummins, Kohler/SDMO all GE Zenith Partners

9. Introduction to ATS Scott Kolek Global Annual Power Quality Meeting 2006 9 ATS with UPS – Key Advantages Redundancy  Individual ATS, sized to UPS…versus large CB’s switching multiple UPS  Dedicated emergency wiring all the way from Gen(s) to UPS…versus single- point failure common bus schemes Selectivity  ATS designed to Withstand fault current vs. trip – permitting downstream devices time to isolate fault

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