HIGH-RELIABILITY DESIGNS FOR ECONOMICAL DATA CENTERS

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1 HIH-RLIABILITY DSINS FOR CONOMICAL DATA CNTRS Design Features that Add Reliability to Data Centers while Reducing Costs per kw Michael Mosman, P Vice President, Chief Technology Officer Baltimore, MD

2 Discussion Topics Raise the System Voltage Transform Big, Close and Wet liminate Stranded Capacity Protect More with Less

3 Raise the System Voltage Voltage makes a big difference in the amount of copper. ach of these ductbanks can carry 2500 kva. 480 VOLT, 3-PHAS, 4-WIR 4160 VOLT, 3-PHAS, 3-WIR 4000 AMP, 75 LON (8) STS: (4) 750kCM XHHW in 4 PVC 600 of 4 PVC 2720 of 750kCM CU WIR 6 CU YD of CONCRT (64) 600 V TRMINATIONS 500 AMP, 75 LON (3) 500kCM 5kV XLP in 5 PVC 75 of 5 PVC 180 of 500kCM CU SHILDD CABL 2 CU YD of CONCRT (6) 5 kv TRMINATIONS $72,000* $10,000* * INCL. LABOR, MATRIAL, O&P (YOUR MILA MAY VARY)

4 Raise the System Voltage A progression of design and construction techniques From this To this

5 Raise the System Voltage A little bit of transformation buys a lot of copper. UTILITY SRVIC SRVIC TRANSFORMR UTILITY SRVIC MAIN SWBD SSNTIAL LOAD UPS MAIN SWR DISTRIBUTION TRANSFORMRS SSNTIAL LOAD CRITICAL LOAD TYPICAL 480 VOLT SYSTM 2500 kva TRANSFORMR 2000 kw, 480V A, 480V MAIN SWBD 1000 kva, 480V UPS $1,250,000 SRVIC TRANSFORMR UPS CRITICAL TYPICAL 4I60 VOLT SYSTM LOAD 2500 kva TRANSFORMR 2000 kw, 4160V A, 4160V MAIN SWR (2) V TRANSFORMRS 1000 kva, 480V UPS $1,050,000

6 Transform Big, Close and Wet Close-coupled, liquid-filled, indoor unit-substations save money. High efficiency Biodegradable, high flashpoint fluid Integrated primary & secondary protection Dual primary selection

7 Transform Big, Close and Wet Hardened data center (HDC) transformers are the most reliable. High primary impulse levels with both insulation and wire spacers Incorporated protection CTs Welded and braced secondary leads Immersed vacuum fault interrupters and source selection switches Immersed tap changers

8 Transform Big, Close and Wet (1) 4160V PDU in a closet replaces (5) 480V PDUs on raised floor 1000kVA 4160V 230/400V PDU with 1500kVA continuous overload capability (without cooling fans) and 99.5% efficiency Secondary feeder #1 overhead Protective relay and power meter Secondary bushings, two sets (cabinet not installed) Cooling vent (from computer room) Containment basin (partially installed) Primary feeder U Dual primary bushings (cabinet not installed) Secondary feeder #2 under slab

9 Transform Big, Close and Wet Next eneration MV PDU 1.5/2 MVA, 4160 V

10 liminating Stranded Capacity What Is Stranded Capacity? Future capacity earmarked for growth is NOT stranded capacity. Red-lined portion of capacity is NOT stranded capacity. Unit A Unit B A B Dual-Corded Load Stranded capacity IS the unused capacity of one system which is not available to serve another system s load. Stranded capacity cannot be eliminated by simply deferring equipment deployment. 1 2 Reserved capacity for redundancy is NOT stranded capacity.

11 liminating Stranded Capacity Traditional system configurations may have stranded capacity. UTILITY UTILITY MAIN SWB MAIN SWB NORMAL LOAD SSNTIAL SWB SSN SWB A SSNTIAL LOAD NORMAL LOAD SSN SWB B SSNTIAL LOAD A SSNTIAL LOAD B STS CRITICAL LOAD A CRITICAL LOAD PARALLL-RDUNDANT SINL-CORDD CRITICAL LOAD DUAL RDUNDANT (N+N) CRITICAL LOAD B

12 liminating Stranded Capacity New Iso-Parallel configuration eliminates stranded capacity. UTILITY UTILITY MAIN SWB 1 NORMAL LOAD SSN SWB 1 SSNTIAL LOAD 1 MAIN SWB 2 MAIN SWB 3 SSN SWB 2 SSNTIAL LOAD 3 IP BUS CRITICAL LOAD 2 ISOLATD-PARALLL RDUNDANCY SSN SWB 3 SSNTIAL LOAD 2 IP CHOK CRITICAL LOAD 1 UTILITY CRITICAL LOAD 3

13 liminating Stranded Capacity Advantages of an IP design All loads shared equally by all modules No single point of failure No designated redundant modules Higher module efficiency Modules operate independently Faults isolated to one module Loads always on UPS

14 Protect More With Less Traditional MV Protection Scheme OVRCURRNT PROTCTION (6) 587Z DIFFRNTIAL PROTCTION (2) 587Z

15 Protect More With Less conomical Protection Scheme COMBIND DIFFRNTIAL AND OVRCURRNT PROTCTION

16 Products That Lead to conomical Reliability Medium voltage arc-containing switchgear FR3 liquid cooled transformers Iso-Parallel configured UPS systems Multi-function protective devices

17 For more information, please contact: 1500 S. dgewood Street, Baltimore, MD Phone (410)