SUPER LOW LOSSAMORPHOUSTRANSFORMERS

A WILSON E2 AMORPHOUSTRANSFORMER CAN SAVE UP TO

02

Our Wilson e2 amorphous transformeris the industry leading super low losstransformer product. It avoids energywastage through transformer lossesand helps organisations reduce theiroperating costs and their emissions.With significant energy savings over thelifetime of a transformer, total cost ofownership considerations are almostalways favourable with a Wilson e2.

IMPROVE THE ENERGY EFFICIENCYOF YOUR SITE

CUTOPERATING

COSTS

EXCEEDS TIER 2 ECO DESIGNDIRECTIVE SPECS

SAVE ENERGYADD £££’s

TO YOUR BOTTOM LINE

ADD TO YOUR BOTTOMLINE WITH ONE SIMPLEINFRASTRUCTURE DECISIONOur Wilson e2 transformer range provides superioroperational efficiency alongside in-built voltagemanagement capabilities, achieving savings in bothenergy costs and associated CO2 emissions.

BENefits of choosinga wilson e2• Guaranteed loss savings over lifetime

• Favourable total cost of ownership (TCO)

• Cost effective 2 in 1 Voltage Management solution

• Over 700 installations with proven & reliable technology

• Meets & exceeds Tier 2 (2021) EU Eco Design specs.

• Up to £100k lifetime savings when replacing an existing transformer

• Easy, non-invasive energy efficiency measure

• 24 month guarantee for complete peace of mind

FUTURE PROOF YOUR SITE:

Core losses are continually present from the day theunit is energised, that is 24 hours a day, 365 days ayear. Wilson e2 transformers combine amorphousmetal cores with low current density conductors tocreate a super low loss transformer with significantlyreduced losses.

The result? Providing you with guaranteed, easilyquantifiable energy savings for your organisation.

CUTTING TRANSFORMER LOSSESFURTHER: AMORPHOUS METALCORE TECHNOLOGYTwo types of energy losses are inherent in the runningof distribution transformers:

LOAD LOSSES THAT VARY DEPENDINGON TRANSFORMER LOADING1NO- LOAD LOSSES THAT OCCURIN THE TRANSFORMER CORE2

03

ENERGY EFFICIENCYAT OUR CORE

exceed tier 2 eco design directive specifications coming into force in 2021OUR WILSON E2 DISTRIBUTION TRANSFORMERS ALREADY

The Wilson e2 transformer combinesamorphous core material with lowcurrent density conductors to providea distribution transformer with thelowest combined transformer losses.As a result it already exceeds the EUEco Design specifications due to comeinto force in 2021 (Tier 2).

Amorphous metal7.15 (g/cm3)

130.00

1.56 (Tesla)

0.20 Watt/kg

0.025 mm

0.86

Higher

Ribbon/foil*

360°C

Inert gas

Magentic fieldannealing

COMPARISON OF PROPERTIES

Infrared (IR) images illustrate significantly lower temperature in anamorphous metal core (right) compared with a traditional silicon steelcore (left).

PropertiesDensity

Specific resistance

Saturation flux density

Typical core loss (at 50 Hz, 1.4 Tesla)

Thickness

Space factor

Brittleness

Available form

Annealing temperature

Annealing atmosphere

Special annealing requirement

CRGO Steel7.65 (g/cm3)

45.00

2.03 (Tesla)

0.90 Watt/kg

0.27 mm

0.97

Lower

Sheet/Roll

810°C

Inert gas

-

*(Standard sizes -142.2mm, 172.2mm & 231.4mm)

CRGO CRYSTALLINE CORE e2 AMORPHOUS CORE

WHAT ARE AMORPHOUS CORETRANSFORMERS (AMT’S)?The cores of conventional transformers consist ofstacks of laminations that are made from silicon steelwith an almost uniform crystalline structure (CRGO). Intransformers with amorphous cores, a ribbon of steel iswound to form the core.

The big benefit of amorphous transformers is that amorphous steelhas lower hysteresis losses. Simply put this means that less energy iswasted as heat during magnetisation and de-magnetisation of thecore (see IR imagery below).

WHAT ARE AMORPHOUS metals?Amorphous metals are made of alloys that have no atomic order.They are made by rapid cooling of molten metals that preventscrystallisation and leaves a vitrified structure in the form of thin strips.Due to the lack of systematic structure, this type of metal has alsobeen given the name "The Metallic Glasses".

THE UK’s leadingENERGY EFFICENTTRANSFORMER

THE university of warwick

It was in reality a ‘no brainer’ toselect the Wilson e2 for tworecently completed substationupgrade projects.

”“

LOWEST COMBINED TRANSFORMER LOSSES:

COMPARE TRANSFORMER LOSSES

Since its launch the Wilson e2 has been continually developedto improve energy efficiency, and is a distribution transformerproduct with significantly reduced transformer losses thatalready exceed Tier 2 Eco Design specifications due to comeinto force in 2021.

TRANSFORMER LOSSES –A HISTORICAL GUIDETO LOSSESWhen calculating the gains associatedwith upgrading supply transformers tomodern super low loss equivalents, theage and construction of the existingunit will make a significant difference.

As a rule of thumb, the older your transformerthe worse its performance is likely to be.

How much energy (and money!) is your oldtransformer wasting away through losses? Find out from our rough guide on typical lossvalues for transformers manufactured in the last 65 years (based on a typical 1000kVAtransformer).

Transformer loss comparison. All values are given in Watts [W] and refer to full load. Figures correct at date of first publication, October 2017.

PRE 2015 STANDARD LOSS CRGO TRANSFORMERCore Losses NLL Load Losses LL

600 5350

900 7400

1150 11000

1350 12500

1575 16000

1700 21000

1800 21700

2300 24000

3000 28000

KVA WILSON e1 - Tier 1 2015 eco design compliantCore Losses NLL Load Losses LL

360 3900

510 5500

650 8400

770 10500

950 22000

1125 13140

1200 14000

1450 18000

1750 22000

WILSON e2 - Tier 2 2021 eco design compliantCore Losses NLL Load Losses LL

200 2800

300 3900

425 6000

500 7600

550 9500

625 11285

630 12000

850 15000

900 18500

315

500

800

1000

1250

1500

1600

2000

2500

TRANSformerconstruction1950s Transformer (Hot rolledsteel - typically pre 1965)

1970s Transformer (EarlyCRGO 1965 to 1985 approx)

1990s Transformer (modernstandard CRGO - from approx1985 onwards)

2015 Transformer (Tier 1 EUEco Design compliant)

Core losses(approx. [W])2870

1770

1350

770

Load Losses(approx. [W])14000

13000

12500

10500

kWh savingsWilson e2/pa48233

34304

28479

14813

£’s savingsWilson e2/pa*£5,305.63

£3,773.44

£3,132.69

£1,629.43

*based on electricity costs of £0.11/kWh **All based on 1MVA rating and 70% load.

Please note that the dates detailed above are approximate and an overlap of manufacturing techniques may beevident in transformers commissioned around these milestone periods.

EXCEEDSSTRICT TIER 2(2021) EU ECO

DESIGNSPECIFICATIONS

TRANSFORMER LOSSES COMPARISON

OLD INEFFICIENT ENERGY GUZZLING SUPPLY TRANSFORMERS?ARE YOU STILL RUNNING

04

VOLTAGE MANAGEMENTTHROUGH MV SUPPLY

Voltage Management is an energy saving techniquethat reduces these unnecessary losses by improvingvoltage to site. The Wilson e2 transformer comes within-built voltage management capabilities that allow foreasy adjustment to LV site voltage without the need ofcostly additional equipment.

NHS ESTATES MANAGER

An extremely cost effective infrastructureupgrade that not only provides guaranteedenergy savings through reducedtransformer losses but delivers substantialadditional savings through in-built voltagemanagement capabilities.

”“

HV voltage11,000V

11,000V

11,000V

11,000V

11,000V

11,000V

Tap setting7.5% (1)

5% (2)

2.5% (3)

0 (4)

-2.5% (5)

-5% (6)

LV voltage384V

394V

405V

415V

425V

436V

GUIDELINE VALUES FOR NO LOAD VOLTAGE

NHS CASE STUDY - Voltage data

Many sites in the UK are supplied by ahigher than optimal voltage that isresponsible for significant energy lossesin voltage dependent equipment.

255Before Changeover

After Changeover

Vo

ltag

e

Time

250

245

240

235

230

225

220

215

The following graph details the recorded RMS voltage forthe supply.

two AREAS OF ENERGY SAVINGS

The Wilson e2 is designed to deliver a reducedsecondary voltage (415 instead of 433V). In additionthe units feature an extended tapping range (+7.5%)designed to reduce site voltage at source without theneed for costly dedicated voltage managementequipment. This reduces plant footprint, avoidsadditional system losses and eliminates the need foradditional plant maintenance.

GUARANTEED SAVINGS THROUGH REDUCED TRANSFORMER LOSSES

SUBSTANTIAL POTENTIAL SAVINGSTHROUGH VOLTAGE MANAGEMENT

1

2

Based on a 25-year transformer lifespan, a 1000kVAWilson e2 transformer will typically save £50,000 overits lifetime when compared with a modern, Ecodesign Tier 1 compliant transformer.

Get substantial additionalsavings from voltage management AT no additional cost

05

I

F06

CD

E B

A

LK

DImensions (in mm)

Rating

1

2

2

2

2

2

3

3

4

KVA Ranktype

1368

1378

1578

1568

1723

1723

1723

1938

2082

A1620

1988

1998

1998

2080

2080

2080

2140

2147

B1760

1760

1760

1760

1760

1760

1760

1760

2712

C1320

1320

1320

1320

1320

1320

1320

1320

1500

D1340

1480

1685

1685

1800

1800

1800

1860

1865

E720

720

720

720

720

720

720

720

900

f745

755

830

830

870

870

870

970

1075

g1049

1049

1049

1049

1049

1049

1049

1049

1229

h1320

1320

1320

1320

1320

1320

1320

1320

1500

i400

400

400

400

400

400

400

400

500

j-

111

151

191

231

311

191

271

311

k-

-

-

-

-

-

191

271

311

l315

500

800

1000

1250

1500

1600

2000

2500

Dimensions & typical assembly

Representative assembly shown for 1600kVa Wilson e2 transformer

Dimensions shown are subject to tolerances (10%)

DO you Need additional technical information?PLEASE ASK US FOR SUPPORTING TECHNICAL DETAILS TODAY

J

H

G

11/415 75/28

HV LI/PF

<5% -/3

07

WILSON e2 DISTRIBUTION TRANSFORMER RANGE:• Single and three phase transformers

• 100kVA – 3000kVA

• Oil filled ONAN or synthetic ester filled KNAN with insulation class up to 36kV

• Primary voltages typically 3.3kV, 6.6kV, 11kV, 11/6.6kV dual, 33kV

• Secondary voltages typically 280V, 315V, 400V, 415V, 433V, 480V, 690V

• Off-load tap changers (on load tap changer available for Wilson e2+)

• Extended tapping range: -5% to +7.5%

• Corrugated or bolt on panel radiator tanks

• Cable box type or open bushings

• BS / IEC standards or custom specifications

TYPICAL APPLICATIONS:• Step down distribution transformers

• Step up generation transformers

• Package substations

• Unit type substations

• Data centres

• Wind farm transformers

• Solar PV farm transformers

• 6 Pulse and 12 Pulse rectifiertransformers

• Isolation transformers

• Voltage Management

• Battery Storage

TYPICAL ACCESSORIES:• Oil temperature indicator (OTI)

• Close coupled MV switchgear

• Close coupled LV cabinets/feeder pillars

• Winding temperature indicator(WTI)

• Magnetic oil level gauge (MOG)

• Forced air cooling

• Marshalling box

• Pressure relief device (PRD)

• Bi-directional rollers

• Radiator valves

• Dehydrating breather

electrical characteristicsRating

KVA kV/V4.75

4.75

4.75

4.75

5

5.5

5.5

6

6

Z

200

300

425

500

550

625

630

850

900

Po NL

2800

3900

6000

7600

9500

11285

12000

15000

18500

Po LL THD%

2672

3151

4149

4399

5001

5550

5600

6752

8100

Kg

315

500

800

1000

1250

1500

1600

2000

2500

e2 range, electricalcharacteristics & typicalapplications

exceeding tier 2 eco design directive specifications today

LV LI/PF

It was in reality a ‘no brainer’ to select the Wilson e2 for two recently completed substation upgrade projects.

Results - £22,500 annual savings 272,949 kWh reduction annually.

I found Carl and his team on site very professional. They all got on with the job, had pride in their workmanship and attention to detail. The client was certainly impressed and is looking forward to the energy savings.

Results - £25,000 annual savings 285,000 annual kWh savings.We’re happy to

recommend the Wilson e2 transformer as part of an integrated approach to energy savings.

An extremely cost e�ective infrastructure upgrade that not only provides guaranteed energy savings through reduced transformer losses but delivers substantial additional savings through in-built voltage management capabilities.

NHS University Hospital of South Manchester

Wilson Power Solutions LimitedWestland WorksWestland Square

Leeds LS11 5SS UK

T: +44 (0)113 271 7588E: info@wilsonpowersolutions.co.uk

WILSONPOWERSOLUTIONS.CO.uk