KVA 50% L d T t l L

Wes Patterson, DOE Negotiating Committee, 04 Nov 2011

KVA vs 50%

Loa

d

T

o

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al Loss

MVDT

© ABBMonth DD, YYYY | Slide 1
MVDT-3ph ALL designs 20-45BIL (including out-ofKVA (x-axis) vs 50% Load Total Loss (y-axis) KVA (x axis) vs 50% Load Total Loss (y axis)

1 ... 2 ...33 ...

Upper limit from

design considerations

40%-50% reduction





Unrestricted losses



dEL5

© ABBMonth DD, YYYY | Slide 2
MVDT-3ph ALL designs 46-95BIL (including out-ofKVA (x-axis) vs 50% Load Total Loss (y-axis) KVA (x axis) vs 50% Load Total Loss (y axis)

1 ... 2 ...3

...

Upper limit from

design considerations

40%-50% reduction











Unrestricted losses 

dEL4

© ABBMonth DD, YYYY | Slide 3
MVDT-3ph ALL designs 96-200BIL (including out-oKVA (x-axis) vs 50% Load Total Loss (y-axis) KVA (x axis) vs 50% Load Total Loss (y axis)

1 ... 2 ...3

...

Upper limit from

design considerations

40%-50% reduction

Unrestricted losses







Unrestricted losses



© ABBMonth DD, YYYY | Slide 4
Scratch Sheets
MVDT-3ph ALL designs 20-45BIL (including out-ofKVA (x-axis) vs 50% Load Total Loss (y-axis) KVA (x axis) vs 50% Load Total Loss (y axis)

1 ... 2 ...33 ...

Unrestricted losses

© ABBMonth DD, YYYY | Slide 6
MVDT-3ph ALL designs 46-95BIL (including out-ofKVA (x-axis) vs 50% Load Total Loss (y-axis) KVA (x axis) vs 50% Load Total Loss (y axis)

1 ... 2 ...3

...

Unrestricted losses

© ABBMonth DD, YYYY | Slide 7
MVDT-3ph ALL designs 96-200BIL (including out-oKVA (x-axis) vs 50% Load Total Loss (y-axis) KVA (x axis) vs 50% Load Total Loss (y axis)

1 ... 2 ...3

...

Unrestricted losses Unrestricted losses

© ABBMonth DD, YYYY | Slide 8
Reference Data
MVDT ALL designs (including out-of-scope) 

KVA (x-axis) vs 50% Load Total Loss (y axis) vs 50% Load Total Loss (y-axis

1 In the 12 month 

sample period (1006 – 1106) only (3) 1ph designed 

were produced were produced

2 1ph standards must 

be determined by theoretical methods

3 ...

4 ...

© ABBMonth DD, YYYY | Slide 10
MVDT-3ph ALL designs (including out-of-sc

KVA (x-axis) vs 50% Load Total Loss (y axis) vs 50% Load Total Loss (y-axis

Note alignment with 3⁄4 rule

Upper trend of losses

Note alignment with 3⁄4 rule- from 100KVA thru 20MVA 

3⁄4 rule

© ABBMonth DD, YYYY | Slide 11
MVDT-3ph ALL designs (including out-of-sc

KVA (x axis) vs 50% Load Total Loss (y axis

1 ABB designs are 

step-lap

KVA (x-axis) vs 50% Load Total Loss (y-axis

Note alignment with 3⁄4 rule

2 ...3 ...

Upper trend of losses

Note alignment with 3⁄4 rule- from 100KVA thru 20MVA 

Wound core is not used in MVDT due to physical In the US the typical MVDT is 15kV, 95BIL, 1500This is physically equivalent to a liquid-filled trans

3⁄4 rule

This is physically equivalent to a liquid filled transfilled this has been shown to be above the effecticore construction – stacked core is better (perforOutside the US wound core is just being introducthese market the nominal unit size is 20kV, 75BILa 750KVA liquid-filled). It is recommend that the MVDT national standard 

© ABBMonth DD, YYYY | Slide 12

It is recommend that the MVDT national standard 

EXCLUDING WOUND CORE
MVDT-3ph ALL designs (including out-of-sc

KVA (x-axis) vs 50% Load Total Loss (y axis) vs 50% Load Total Loss (y-axis

Note alignment with 3⁄4 rule- holds within each BIL g p rou- thru 20MVA

3⁄4 rule

3⁄4 rule 3⁄4 r

3⁄4 rule

© ABBMonth DD, YYYY | Slide 13
MVDT-3ph ALL designs (including out-of-scKVA (x axis) vs 50% Load Total Loss (y axisKVA (x-axis) vs 50% Load Total Loss (y-axis

1 ABB designs are 

step-lap Note alignment with 3⁄4 rule - holds within each BIL group

2 ... 3 ...

g p

- thru 20MVA

3⁄4 rule Lower limit of losses L li it f l 3⁄4 rule Lower limit of losses Lower limit of losses 

© ABBMonth DD, YYYY | Slide 14
MVDT-3ph ALL designs <3000KVA (including out-

KVA (x-axis) vs 50% Load Total Loss (y axis) vs 50% Load Total Loss (y-axis)

Unrestricted losses= 1.20 x 95BIL-STD

96-200BIL STD= 1.04 x 95BIL

46-95BIL STD

20-45BIL STD= 0.9 x 95BIL

© ABBMonth DD, YYYY | Slide 15
MVDT-3ph ALL designs <3000KVA (including out-

KVA (x-axis) vs 50% Load Total Loss (y axis) vs 50% Load Total Loss (y-axis)

Unrestricted losses= 1.20 x STD

Unrestricted losses= 1.15 x STD

46-95BIL STD 20-45BIL STD = 0.9 x 95BIL

© ABBMonth DD, YYYY | Slide 16
MVDT-3ph ALL designs <3000KVA (including out-KVA (x-axis) vs 50% Load Total Loss (y-axis)

1 ABB designs are 

step-lap

2 ...

KVA (x axis) vs 50% Load Total Loss (y axis)

3 ... 

Unrestricted losses= 1.20 x 95BIL-STD

96-200BIL STD= 1.04 x 95BIL

46-95BIL STD

20-45BIL STD= 0.9 x 95BIL

© ABBMonth DD, YYYY | Slide 17
MVDT-3ph ALL designs <3000KVA (including out-KVA (x-axis) vs 50% Load Total Loss (y-axis)

1 ABB designs are 

step-lap

2 ...

KVA (x axis) vs 50% Load Total Loss (y axis)

3 ... 

Unrestricted losses= 1.20 x STD

Unrestricted losses= 1.15 x STD

46-95BIL STD 20-45BIL STD = 0.9 x 95BIL

© ABBMonth DD, YYYY | Slide 18