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 A Quick GuideTotal Cost of Ownership calculator

tool (ver. 1.1)

ABB Transformers, 2015

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TCO Tool * A Quick Guide

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Background of TCO and TCO tool

The use of Total Cost of Ownership -ethod (also known as Total

Ownership Cost -ethod) allows anufacturers to tailor the

desi/n to the uni0ue econoic situation of each transforer user$

and allows the user to evaluate ultiple desi/ns in order to find out

the optial solution for his need

The eas",to,use ABB Transforer TCO Tool supports custoers

to deterine$ !ased on their own situation and future scenario$ the

ri/ht loss capitalisation values to !e used in their in0uir" to !e

passed to the anufacturers

The tool also helps in coparin/ different alternative transforer

offers$ calculates the onetar" savin/s and evaluates theenvironental ipact and therefore supports the related decision

akin/ and increases the awareness

Current version 1.1. supports in addition to n/lish lan/ua/e also

Chinese$ Geran$ rench and panish lan/ua/es

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TCO tool is an universal easy-to-use tool for

3eterinin/ the transforer loss capitali4ation values (5A5 and

5B5 factors)

Coparin/ transforers with different first cost and loss values

fro the followin/ aspects

Total cost of ownership with pa"!ack tie on ar/inal cost

Consuption of ener/"

CO% eission ipact (in k/ of CO%) with analo/ue to the

nu!er of trees needed to copensate the e6tra eissions

caused !" the trafo with lower efficienc"

Calculation forulas are !ased on 7C #&&8#,%& (current draft)on applica!le parts (the results are full" applica!le with 575

transforers as well)

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TCO Tool * A Quick Guide7nterface * inputs 1

i,!uttons forhelp

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TCO Tool * A Quick Guide7nterface * inputs %

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i,!uttons forhelp

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TCO Tool * A Quick Guide7nterface * coparison and results

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Peak efficiency inde!"#C$ is the hi/hestefficienc" that thetransforer can reachat an optia loadin/point. 7t is calculated!ased on the 7Cdefinition of efficienc".

Total cost ofo%ners&i' is the suof the initial purchasecost and the netpresent value of the

cost of losses durin/the lifetie. 7n thiscalculation$ differencesin other lifec"cle costcoponents such asinstallation$aintenance$ possi!leout,tie anddecoission costsare not included.

Total lifetime savingsdurin/ the lifetie ofthe transforer in

selected currenc" whencoparin/ the :;owesttotal cost5 and thetransforer 6.

Pay(ack time in years for the ar/inalinvestent on thehi/her efficienc" whencoparin/ the :;owesttotal cost5 and thetransforer 6. iplepa"!ack calculationethod.

#nergy savings 'eryear and total - Theaount of ener/"saved when selectin/the :;owest total cost5instead of transforer6.

CO2 emissionreduction 'er year -The aount of CO%eission avoided intons when selectin/ the:;owest total cost5

instead of transforer6. Calculated usin/ the/lo!al avera/e CO%eission of 9h /enerated.

CO2 a(sor'tionca'a(ility of trees -The nu!er of treesneeded to offset thehi/her CO% eissionscaused !" atransforer with lowerefficienc" !ased on the

avera/e annuala!sorption capa!ilit" of%% k/ of CO% !" asin/le tree.

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TCO Tool * A Quick GuideTCO Tool * interface * !asic reportin/ (pdf print)

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TCO Tool * A Quick Guide?otes and rearks

Cooling losses

Coolin/ losses of a transforer e0ual the power consuption of

the coolin/ e0uipent of the transforer. 7n case of coolin/ with

natural oil and air flow (O?A?)$ the coolin/ losses are 4ero due to

the fact that no additional power for pups or fans is needed

>ith transforers with forced oil flow (OA$ O3A or O>) thepups for oil are usuall" ener/ised at no load condition of the unit.

Therefore$ for a t"pical case the coolin/ losses at no load () for

those transforers e0ual the power consuption of the oil pups

 

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