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: [email protected]
WILSONPOWERSOLUTIONS.CO.uk