© ABB

Month DD, YYYY | Slide 1 

# Pole Mounted Transformers

Weight Wes Patterson, DOE Negotiating Committee, 17 Oct 2011© ABB

Month DD, YYYY | Slide 2 1 A power relation

exists between

weight and losses in

two dimensions

- change in KVA

- change in

technology with a

KVA

2

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# MVLF

– in

- scope PPI Poles and all DOE designs (by Phase)

50% Load Total Loss (x

- axis) vs Weight (y

- axis)

A 30% reduction

in watts loss results in

a 15% increase in weight

All black lines are parallel

so the 1ph relation holds

for 3ph

There is a power relation

between watts loss and weight

- with DOE data at 25 and 150 KVA

- with all PPI data There is a power relation

between loss watts reduction

and weight increase

- based on DOE data

- but confirmed with PPI data

Each grouping of

dots is a different KVA© ABB

Month DD, YYYY | Slide 3 

# MVLF

– 1ph

– 10,15,25,37.5,50,75 KVA

50% Load Total Loss (x

- axis) vs Weight (y

- axis)

1 Zoom to 1ph, 10

- 75

KVA only

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Month DD, YYYY | Slide 4 

# MVLF

– 1ph

– 10,15,25,37.5,50,75 KVA

– M3 only

50% Load Total Loss (x

- axis) vs Weight (y

- axis)

1 Zoom to

1ph, 10

- 75 KVA

M3 only

2 For M3 only

– a

30% reduction in

loss results in an

83% increase in

mass

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Month DD, YYYY | Slide 5 

# MVLF

– Poles

Average Weight variation by KVA / BIL

1 Weight increase

with a) increase in

KVA and b)

increase in BIL

2 within a given BIL

rating the weight

change roughly

follows the 3⁄4

scaling rule

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360 

### DOE Scope

414 682

824 842 1152

1502 1540 1931

2010

1782 1850 1387

1287 1238 382 630 1517© ABB

Month DD, YYYY | Slide 6 

# MVLF

– Poles

MVA distribution (KVA x

- axis, BIL y

- axis, MVA bubble) DOE Scope

1 The market is

dominated by 95

BIL at 25 KVA and

75 KVA

2 but the regulation

must cover thru 200

BIL and

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4 Note: out

- of

- scope

are mainly exports

and are included to

illustrate the

situation with no

regulation© ABB

Month DD, YYYY | Slide 8 

# MVLF

– 1ph only

50% Load Total Loss (x

- axis) vs Weight (y

- axis)

1 Zoom to 1ph only

2

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4

---© ABB

Month DD, YYYY | Slide 9 

# MVLF

– 1ph

– M3 only

50% Load Total Loss (x

- axis) vs Weight (y

- axis)

1 Zoom to

1ph

– M3 only

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Month DD, YYYY | Slide 11 1 NOTE: includes

exports

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# MVLF

– all PPI Poles and all DOE designs

Efficiency (x

- axis) vs Weight (y

- axis)© ABB

Month DD, YYYY | Slide 12 1 NOTE: includes

exports

2 Eliminated the 1500

KVA 3ph for better

clarity of the pole

market

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# MVLF

– all PPI Poles and DOE designs (excl 1500 KVA)

Efficiency (x

- axis) vs Weight (y

- axis)© ABB

Month DD, YYYY | Slide 13 1 NOTE: includes

exports and both

1ph and 3ph

2 Note the power

relation between

losses and weights

3

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4

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# MVLF

– all PPI Poles and all DOE designs

50% Load Total Loss (x

- axis) vs Weight (y

- axis)© ABB

Month DD, YYYY | Slide 14 1 NOTE: includes

exports

2 Note the power

relation between

losses and weights

3

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4

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# MVLF

– all PPI Poles and all DOE designs (by Phase)

50% Load Total Loss (x

- axis) vs Weight (y

- axis)© ABB

Month DD, YYYY | Slide 15 1 Check the fit to the

3⁄4 rule

2

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4

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# MVLF

– in

- scope PPI Poles and all DOE designs (by Phase)

KVA (x

- axis) vs Weight (y

- axis)

– the 3⁄4 Rule

3⁄4 Rule 3⁄4 Rule© ABB

Month DD, YYYY | Slide 16 1 Check the fit to the

3⁄4 rule

2

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3

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4

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# MVLF

– all PPI Poles and all DOE designs (by Phase)

KVA (x

- axis) vs Weight (y

- axis)

– the 3⁄4 Rule

3⁄4 Rule

3⁄4 Rule© ABB

Month DD, YYYY | Slide 17 1 Check the fit to the

3⁄4 rule

2

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3

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4

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# MVLF

– in

- scope PPI Poles and all DOE designs (by Phase)

KVA (x

- axis) vs 50% Load Total Loss (y

- axis)

– the 3⁄4 Rule

NOTE: The current standard has

the smaller KVA’s artificially lower 3⁄4 Rule

3⁄4 Rule© ABB

Month DD, YYYY | Slide 18 

# MVLF

– all PPI Poles and all DOE designs (by Phase)

KVA (x

- axis) vs 50% Load Total Loss (y

- axis)

– the 3⁄4 Rule

NOTE: this follows the 3⁄4 rule

down thru the smaller KVA

The current standard has the

smaller KVA’s artificially lower

3⁄4 Rule 3⁄4 Rule 1 Check the fit to the

3⁄4 rule

– it’s a better

fit with the exports

included !!!

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