KVA 50% L d T t l LWes Patterson, DOE Negotiating Committee, 04 Nov 2011KVAvs50%LoadTotalLossMVDT© ABBMonth DD, YYYY | Slide 11No wound core–MVDT-3phALLdesigns20-45BIL(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)1...2...34...STD-10%-20%-30%-40%3...Upper limit fromdesign considerations40%-50% reduction-50%dEL5Unrestricted lossesdEL5© ABBMonth DD, YYYY | Slide 21No wound core–MVDT-3phALLdesigns46-95BIL(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)1...2...34......STD-10%-20%-30%-40%-50%Upper limit fromdesign considerations40%-50% reductiondEL5Unrestricted lossesdEL4© ABBMonth DD, YYYY | Slide 31No wound core–MVDT-3phALLdesigns96-200BIL(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)1...2...34......STD-10%-20%-30%-40%-50%Upper limit fromdesign considerations40%-50% reductiondEL5Unrestricted lossesdEL5Unrestrictedlosses© ABBMonth DD, YYYY | Slide 4Scratch Sheets1No wound core–MVDT-3phALLdesigns20-45BIL(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)1...2...34...STD-10%-20%-30%-40%3...-50%Unrestricted losses© ABBMonth DD, YYYY | Slide 61No wound core–MVDT-3phALLdesigns46-95BIL(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)1...2...34......STD-10%-20%-30%-40%-50%Unrestricted losses© ABBMonth DD, YYYY | Slide 71No wound core–MVDT-3phALLdesigns96-200BIL(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)1...2...34......STD-10%-20%-30%-40%-50%Unrestricted lossesUnrestrictedlosses© ABBMonth DD, YYYY | Slide 8Reference DataMVDTALLdesigns (including out-of-scope)KVA (xaxis) vs 50% Load Total Loss (yaxis)-axis)vs50%LoadTotalLoss(y-1In the 12 monthsample period(1006 – 1106) only(3) 1ph designedwere producedwereproduced21ph standards mustbe determined bytheoretical methods3...4...© ABBMonth DD, YYYY | Slide 10MVDT-3phALLdesigns (including out-of-scope)KVA (xaxis) vs 50% Load Total Loss (yaxis)-axis)vs50%LoadTotalLoss(y-Note alignment with 3⁄4 ruleUpper trend of lossesNotealignmentwith3⁄4rule- from 100KVA thru 20MVA3⁄4 rule© ABBMonth DD, YYYY | Slide 11MVDT-3phALLdesigns (including out-of-scope)KVA (xaxis) vs 50% Load Total Loss (yaxis)1No wound core–1ABB designs arestep-lapKVA(x-axis)vs50%LoadTotalLoss(y-axis)not producedanywhere in US2...3...Note alignment with 3⁄4 rule2...3...4...Upper trend of lossesNotealignmentwith3⁄4rule- from 100KVA thru 20MVALower trend of lossesWound core is not used in MVDT due to physical limitations of the size of the coreIn the US the typical MVDT is 15kV, 95BIL, 1500KVAThis is physically equivalent to a liquid-filled transformer about 2000KVA. In liquid-3⁄4 ruleThisisphysicallyequivalenttoaliquidfilledtransformerabout2000KVA.Inliquidfilled this has been shown to be above the effective limit for manufacture with woundcore construction – stacked core is better (performance and economics).Outside the US wound core is just being introduce in the MVDT markets. But inthese market the nominal unit size is 20kV, 75BIL, 400KVA (physically equivalent toa 750KVA liquid-filled).It is recommend that the MVDT national standard be based on an analysis© ABBMonth DD, YYYY | Slide 12ItisrecommendthattheMVDTnationalstandardbebasedonananalysisEXCLUDING WOUND COREMVDT-3phALLdesigns (including out-of-scope)KVA (xaxis) vs 50% Load Total Loss (yaxis)-axis)vs50%LoadTotalLoss(y-Note alignment with 3⁄4 rule- holds within each BILgroup- thru 20MVA3⁄4 rule3⁄4 rule3⁄4 rule3⁄4rule© ABBMonth DD, YYYY | Slide 131No wound core–MVDT-3phALLdesigns (including out-of-scope)KVA (xaxis) vs 50% Load Total Loss (yaxis)not producedanywhere in US2...3...KVA(x-axis)vs50%LoadTotalLoss(y-axis)1ABB designs arestep-lapNote alignment with 3⁄4 rule- holds within each BILgroup4...2...3...g p- thru 20MVA3⁄4 ruleLower limit of lossesL li it f lL li it f l3⁄4ruleLowerlimitoflossesLowerlimitoflossesLowerlimitoflosses© ABBMonth DD, YYYY | Slide 14MVDT-3phALLdesigns<3000KVA(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)axis)vs50%LoadTotalLoss(yUnrestricted losses= 1.20 x 95BIL-STD96-200BIL STD= 1.04 x 95BIL46-95BIL STD20-45BIL STD= 0.9 x 95BIL© ABBMonth DD, YYYY | Slide 15MVDT-3phALLdesigns<3000KVA(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)axis)vs50%LoadTotalLoss(yUnrestricted losses= 1.20 x STDUnrestricted losses= 1.15 x STDUnrestricted losses=1.40x STD96-200BIL STD= 1.04 x 95BIL46-95BIL STD20-45BIL STD= 0.9 x 95BIL© ABBMonth DD, YYYY | Slide 161No wound core–MVDT-3phALLdesigns<3000KVA(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)1ABB designs arestep-lap2...not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)3...4...Unrestricted losses= 1.20 x 95BIL-STD96-200BIL STD= 1.04 x 95BIL46-95BIL STD20-45BIL STD= 0.9 x 95BIL© ABBMonth DD, YYYY | Slide 171No wound core–MVDT-3phALLdesigns<3000KVA(including out-of-scope)KVA (x-axis) vs 50% Load Total Loss (y-axis)1ABB designs arestep-lap2...not producedanywhere in US2...3...KVA(xaxis)vs50%LoadTotalLoss(yaxis)3...4...Unrestricted losses= 1.20 x STDUnrestricted losses= 1.15 x STDUnrestricted losses=1.40x STD96-200BIL STD= 1.04 x 95BIL46-95BIL STD20-45BIL STD= 0.9 x 95BIL© ABBMonth DD, YYYY | Slide 18