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ACCRTM

More Amps

More Confidence

Electrical Markets Division

3M is a diversified technology company serving customers and communities with innovative products and services.

� Established in 1902

2 © 3M 2012. All Rights Reserved

� Established in 1902

� 2011 Worldwide Sales: $30 billion

� 80,000 Employees

� Over 40,000 Products

� Products sold in 200 countries, 66% outside USA� Offices in more than 60 countries� Laboratories in 34 Countries� Manufacturing in 35 Countries


3M Electrical Markets DivisionServing the electrical industry for over 60 years

� High voltage splice and termination kits

� Medium voltage splice and termination kits

� Low voltage solutions


� Wildlife outage protection products

� Tapes and mastics

� 3M ACCR


What is 3M™ ACCR?

� A high voltage, overhead transmission conductor…

� …designed as a drop-in replacement for ACSR and other conventional conductors on existing, thermally limited lines ….


conventional conductors on existing, thermally limited lines ….

� …allowing utilities to use existing structures…

� …capable of carrying 2 or more times the current…

� …reliably for decades.


Improving Performance of a Proven Conductor Design

• Strength: 1275 MPa• Density: 7.8 g/cm3

• Coefficient of Thermal Expansion: 12.0 x 10-6/oC

• Strength: 1380 MPa• Density: 3.3 g/cm3

• Coefficient of Thermal Expansion: 6.3 x 10-6/oC

Coated Steel Core Wires:

Hardened

ACSR

Aluminum Composite Core Wires:

HardenedAluminum Zirconium

ACCR


• Rated to 93 oC • Rated to 210 oC continuous, 240 oC for 1,000 hours

1350 H19 AluminumConductor Wires

� A Century of Proven Reliability

� Ampacity limited by sag & conductor temperature

Aluminum ZirconiumConductor Wires

� Same reliable design as ACSR

� Reduced sag & higher temperature rating � ~2 times higher ampacity

� All Aluminum core improves corrosion resistance and conductivity


ACCR Composite Core Wire

Infiltrated withpure, ductilealuminum

~ 20,000 ContinuousAluminum Oxide Fibers

Aluminum MatrixComposite Wire


Fiber Properties:Lightweight and StrongLow thermal expansionExtremely stable and heat resistant

Composite Wire Properties:Strength of steel with half the weightCoefficient of Thermal Expansion half of steelSuperior stability & corrosion resistance


Conductor Temperature: 50°C

Sag Limit:85

oC

850 amps

Conductor Temperature: 85°C

20

25

Hei

ght (

met

ers)

Conductor Temp: 125°CConductor Temp: 240°C

Sag Limit:240

oC

1798 amps

3M ACCR Maximizes Ampacity ofThermally Constrained Lines

3M ACCRACSR


850 amps

400 m span 400 m span

10

15

0

5

Hei

ght (

met

ers)

1798 amps

MinimumClearance

Assumes ACSR and 3M ACCR at 396 m ruling span, initial tension 2,948 kg @ 15º C, max. loading @ -1º C, no ice, 0.5 kg/m2 wind; ambient conditions: 0.6m/s wind, 35º C, perpendicular wind direction, 0.5 emissivity and solar absorption.


Resistance

Diameter Weight StrengthStrength / Weight

DC @ 20°C

AC @ 75°C Ampacity

Metric Units mm N/m N % Ohms /km Ohms /km amps

Ostrich 300

ACSR 17.3 6.0 56,500 0.1859 0.2272 492

ACCR 17.2 4.9 53,800 0.1826 0.2240 953

ACCR vs ACSR -0.4% -18.2% -4.7% +16 % -1.8% -1.4% +94 %

Hawk 477

ACSR 21.8 9.6 86,700 0.1167 0.1430 659

ACCR 21.6 7.8 85,400 0.1153 0.1414 1,292

Property Comparison: 3M ACCR vs. ACSR


ACCR vs ACSR -0.7% -18.8% -1.5% +21 % -1.3% -1.2% +96 %

Drake 795

ACSR 28.1 15.9 140,100 0.0702 0.0862 907

ACCR 28.6 13.6 143,200 0.0658 0.0808 1,874

ACCR vs ACSR +1.9% -14.9% 2.2% +20 % -6.2% -6.4% +107 %

Curlew 1033

ACSR 31.6 19.4 162,800 0.0541 0.0692 1,047

ACCR 31.7 16.6 158,400 0.0534 0.0655 2,154

ACCR vs ACSR +0.1% -14.7% -2.7% +14 % -1.4% -5.4% +106 %

Bittern 1272

ACSR 34.2 20.9 151,684 0.0445 0.0563 1,184

ACCR 34.3 19.3 171,256 0.0450 0.0552 2,465

ACCR vs ACSR +0.3% -7.5% 12.9% +122% +1.7% -1.6% +108%

Ampacity at 25°C, 2.0 ft/s (0.6 m/s) wind, 0.5 emissivity a nd absorptivity at sea level., using IEEE Std. 738-1993.


ACCR Avoids Tower Rebuilds• Lower weight and thermal expansion of ACCR reduces sag without increasing loads on towers

Saves Time and Money --- Easier• Significantly reduced construction costs• Much shorter outages

Value to UtilityACCR AdvantageACCR Maximizes Ampacity• Typically doubles ampacity of ASCR lines• Provides significantly more ampacity than other high capacity conductors for most lines

Maximizes Value of Existing Lines• More Revenue from more power (200 amp upgrade on 220 kV line can deliver energy worth $3M/year)

• Flexibility to accommodate changing power flows• Quick access to renewables• Increased grid robustness and reliability


• Much shorter outages• Less impact on communities & environment• Reduced or no permitting

ACCR is Extremely Robust• Resistant to heat, cold, corrosion, NO2, UV

• Resistant to fatigue and creep• Modulus matches ACSR (low strain under load)

ACCR Works Everywhere• Deserts, wetlands, coasts, & mountains• Congested cities & long water crossings• Heavy ice and wind loads

ACCR is Reliable• >90 installations around the world• 11 years of very reliable field history

Confidence• 100% successful installations

Electrical Markets DivisionTransmission Upgrade Cost Comparison

100% ampacity upgrade of 17 mile, double circuit 220 kV line

$1.4

$1.6

$1.8

$2.0

$2.2

$2.4

$2.6

Build parallel line with ACSR 1033 kcmil (823mm2) Curlew

Conductor(inc. connectors)

Structures Stringing Substation Land & Permitting

ConstructionOutage

Million US Dollars per Mile

$2.2M/mi

$1.9M/mi


ParallelLine

ACSRRebuild

3M ACCR

$ 0

$0.2

$0.4

$0.6

$0.8

$1.0

$1.2

Rebuild line with twin bundled ACSR 1033 kcmil (823mm2) Curlew

Reconductor with 3M ACCR 1622 kcmil (823mm2) Pecos

$119,000

$238,000

$755,000

$1,546,000

$1,332,000

$63,000

$180,000

$300,000

$150,000

---

---

$180,000

---

---

$150,000(right-of-way unavailable)

No outagebut several

years to build

24 monthoutage

Two 2-month outages

Notes: 1)Total costs reported by utility, some component costs estimated

$1.0M/mi


3M ACCR Delivers More Amps and More Confidence Than Alternative Conductors

� Metal high capacity conductors (ACSS, GAP, ACIR/Invar)

– generally deliver more power by reducing sag due to thermal expansion

– Ampacity gains are modest (30-60% typical).

� Polymer composite conductors (ACCC, ACFR)

– Low thermal expansion and low weight, but ampacity increase has other limitations:

� Conductor operating temperature must be limited to avoid polymer degradation

Lower modulus can cause excess sag under ice loading


� Lower modulus can cause excess sag under ice loading

– Conductor is supported by a single polymer rod with numerous failure modes including high temperature, UV light exposure, moisture, NO2, and compression cracking

– Multiple failures have occurred during installation and operation

� 3M ACCR delivers more ampacity because…

– the aluminum composite core reduces conductor weight and thermal expansion

– the aluminum composite core increases conductivity

– the composite core and AlZr conductor wires are very heat tolerant

– the conductor has less sag than ACSR under ice loads

and 3M ACCR has proven to be reliable in the field


3M Provides More than a Conductorto Ensure a Successful Upgrade

� Stable materials of construction

� Robust, proven conductor design

� Complete system of accessories

� Extensive testing in lab and field


� Manufactured with rigorous quality control

� Engineering support provided to optimize line design

� Crew training and on-site support provided to ensure successful installations

� Backed by 3M’s 110 year reputation for innovation & quality


AFL Compression-Type Hardware

• Design & installation is very similar to conventional ACSR accessories

• ACCR accessories somewhat larger to carry more current

• Sourced from industry leading companies

Complete System of Proven Accessories


PLP Helical Rod-Type Hardware

AFL Compression-Type Hardware• Sourced from industry leading companies

• Provided by 3M as part of a complete solution


Extensive Product Testing

ConductorMechanical Design

Conductor

Long-term Confidence

Conductor strengthDead-end strengthJoint strengthStress-Strain behaviorStiffnessThermal expansion

CreepAeolian VibrationDampingGallopingImpactCorrosion ResistanceLightning ResistanceFault currentShotgun

Accessory DesignDE StrengthJoint StrengthCurrent Cycle DampersRepair SleeveGallopingAeolian VibrationCorona RIVSpacer


ConductorElectrical DesignConductor resistance

ShotgunSuspension slip & strengthHardware TemperatureDE Sustained Load – RT, ETThermal/Current CyclingInstallation

Sheave TestingTorsion

SpacerRepair SpliceSuspension - turn angleSuspension - unbalanced loadSuspension - ET profile

High Temperature PerformanceValidate sag / tension calculationsValidate stability of conductor and accessories

during thermal cycling

Conductor Test Results available at 3M.com/accr


3M Manufacturing Quality

� Proven 3M quality systems including Six Sigma

� Manufactured in 3M ISO registered facilities

� Extensive Quality Control testing--- every inch of every wire tested

� Partnered with industry leaders


� Partnered with industry leaders

� Successfully completed numerous customer audits


� Experienced, global team to support customer’s engineering work

– Engineers in North America, Europe, Asia, South America

� Provide design data in common, easy-to-use design software

– PLS Cad, Sag 10, TLS Pro

– validate sags, tensions, clearances

� 3M proprietary software optimizes conductor selection

3M Line Design Support


� 3M proprietary software optimizes conductor selection


Installation Support

� Installing ACCR is similar to installing ACSR & easier than ACSS

� Installation procedures are tested and validated


� Installation procedures are tested and validated

� 3M provides complete bill of materials and list of required tools

� 3M trains installation crews and stays with the project until it’s complete

� 100% successful installations


High Value Applications for 3M ACCR

� Large ampacity upgrades (50% or more) on existing lines– ACCR is often the best alternative for larger ampacity increases (50% or more)– ACCR is typically used to upgrade existing lines. It has been used for new construction to

overcome issues with tower heights or long spans

� Lines where rebuilding or adding towers is difficult:– congested cities, mountains, & wetlands– structures with other utilities attached beneath the transmission conductors (underbuild)– restricted access or difficult permitting (private land, environmentally protected areas)

� Long spans such as water crossings


� Long spans such as water crossings

� Upgrades that must be completed quickly or with short outage windows

� Clearance violations that require quick resolution

� ACCR will work for any voltage line, but provides most value for 69 – 400 kV lines– Lower voltage lines with shorter spans typically don’t benefit from ACCR’s low sag properties– Lines above 400 kV are more often voltage limited than thermally limited

� ACCR is well suited for almost any environmental condition– High or low temperatures– Heavy wind or ice loads– Corrosive environments such as coastal regions or industrialized areas


RTE

RWE /Amprion

E.ON

REN

50 Hertz

Asia Pacific

Shanghai Power (2)

Chongqing Power (3)

Guangdong Shenzen Power

Henan Zhengzhou Power

Henan Ping Mining

Southern Company (6)

PEPCO (4)

Xcel Energy(3)

BC Hydro (2)

Altalink

US Dept. of Energy

• WAPA (4)

• BPA

AEP

PG&E

Duke Energy

Dominion Power

Allegheny Power

Central Maine Power/Iberdrola

PSG&E

Platte River Power

Silicon Valley Power(3)

Palo Alto (2)

Guadalupe Valley Power

3M ACCR has been Successfully Installed by Leading Utilities Around the World

MOESK

Irkutsk Energo (3)

ZSMK (3)

Romerovo RSK

Volgada Energia

Perm

North America

Europe


South & Central America

CPFL

Electropaulo

CTEEP

Ecelsea

EDP Bandeirante

Grand Bahamas

Henan Ping Mining

Hubei Huangshi Power

Yunnan Dai Electric

Guangxi

Meralco (2)

Tata Power (3)

Chita Energo

Middle East / Africa

SNE, The Congo

PG&E

National Grid U.S.

APS


� Xcel Energy, Minneapolis, MN

� 46 kV, 477 Kcmil (238 mm2)

� Riverside Plant

� Operating flawlessly since 2001

First ACCR Installation Electrical Markets Division



Validated that Field Performance Matched Predicted Performance


� Sag/Tension vs Temperature� Thermal Cycling� High Temp Performance of conductor & accessories Oakridge National Lab

Conductor Test Facility

6.7

6.4

6.1

Oakridge 675 Outdoor Sag Test599 ft (183 meter) Span

20

21

22


6 conductor tests completed 2002 - 2009

6.1

5.8

5.5

5.2

4.9

4.6

4.3

4.0

3.7

Sag (m

eters)

12

13

14

15

16

17

18

19

20

0 50 100 150 200 250Temperature (degrees C)

Sag

(fe

et)

Predicted Sag

Measured Sag


Corrosive EnvironmentElectrical Markets Division

� Hawaii Electric Company (HECO)

� 115 kV, 477 Kcmil (238 mm2)

� Pole 810 to Pole 818, Kahuku

� Operating flawlessly since 2002, years beyond expect life for steel


ACSS

ACCR


Heavy Wind & Ice LoadingElectrical Markets Division

� Western Area Power Administration, Fargo, ND

� Jamestown to Fargo

� 230 kV, 795 Drake

� Operating flawlessly since 2002



Project Overview:� Customer: Xcel Energy� Project: Black Dog to Blue Lake� Location: Minneapolis, MN� Length & Voltage: 10-mile (16 km), 115 kV line

Challenge:� Upgrade line to peaking plant through rare, protected wetland

and National Wildlife Refuge� No motorized vehicles allowed, no midspan access� Tight timeline

Environmentally Sensitive Area, Tight TimelineElectrical Markets Division


� Tight timeline

Solution: 3M ACCR 795 kcmil (418 mm2)

Results: � Achieved ampacity objectives without major construction in

National Wildlife Refuge– Used only existing towers– 4.4 mile (7.3 km) single pull across protected area

� Saved $1 million in constructions costs� Saved months of permitting & reduced upgrade time by 67%� Operating reliably since 2005

“ Without 3M ACCR we would have had to replace existing towers to accommodate larger sized conventional conductors. Use of the new conductor allowed us to boost capacity on the line while avoiding major construction in an area with sensitive wetlands”. – Doug Jaeger, transmission vice president for Xcel Energy


Upgrade Line Recently Upgraded with ACSSProject Overview:• Project: Phoenix Metro Trunkline upgrade• Customer: Arizona Public Service• Location: Phoenix, AZ• Length & Voltage: 5.5 mile (8.9 km), 230 kV

Challenge:• Provide capacity to fast-growing, congested area,

including airport, and downtown sports stadium• Demand exceeds capacity from recent ACSS upgrade• Neighborhoods, schools, highways, distribution lines


• Neighborhoods, schools, highways, distribution lines under the line or along route

Solution: 3M ACCR 1272 kcmil-T13 Pheasant (642 mm2)• selected after reviewing 3 HTLS technologies

Results:• 2100 amps continuous, 2400 amps emergency• Used existing structures without tower modifications• Avoided new rights-of-way & environmental permitting• Minimized installation time (3 weeks)• Minimized disruption to neighborhoods & nearby

facilities• Operating reliably since April 2006

I don’t even want to think what the overload would have been, or the impact of that, if we were still using the old lines,” – Paul Richards, construction projects manager for APS, in The Arizona Republic, 9/25/06


Upgrade Grid Reliability

Project Overview:

• Customer: Platte River Power Authority (PRPA)• Project: Timberline-Harmony• Location: Fort Collins, Colorado• Year Installed: 2007• Length & Voltage: 15 conductor miles (24 km), 5 circuit

miles (8 km); 230 kV

Solution: 3M ACCR 954-T13 Cardinal (490 mm2)


“The Timberline-Harmony line is an important part of the grid between Denver and Cheyenne, and we chose 3M ACCR as a way to safeguard against overloading when demand is high.” – Mike Dahl, Division Manager Electric Operations, Platte River Power Authority

Results:

• Increased capacity to meet the N-1 reliability requirements • Performed as required in heavy loads and emergency

conditions during 2008 tornado• Used only the existing, relatively new towers• Eliminated the need for permitting and other requirements

necessary for new towers• Preserved the sightline and avoided impacting nearby bike

path and railroad

Electrical Markets DivisionRefurbish Old Transmission LineProject Overview:� Customer: National Grid

� Project: A127/B128

� Location: Massachusetts near Worcester

� Length & Voltage: 67 miles, double circuit ,115 kV

� Existing conductor: 4/0 copper installed in 1924

Solution: 3M ACCR 477-T16 Hawk (238mm2)

Results:� Replaced deteriorated copper conductor

� Eliminated potential clearance violations


� Eliminated potential clearance violations

� Increased ampacity by approximately 20%

� Minimized tower reinforcement & replacement

� Minimized environmental impact & outage window

Electrical Markets DivisionLarge Ampacity Upgrade in Environmentally Protected AreaProject Overview:� Customer: Georgia Power (Southern Company)

� Project: Kraft-McIntosh

� Location:. Savannah, GA

� Length & Voltage: 100.2 conductor miles (161.3 km), 33.4 circuit miles (53.8 km); 230 kV

Solution: 3M ACCR 1622 TW-T13 Pecos (823mm2)


Results:� Doubled capacity of lines while maintaining clearance

� Used existing towers with few modifications

� Maintained existing right of way (additional right-of-way was not available)

� Minimized impact on wet land

� Installed quickly within the outage window (Only one circuit could be out at a time - 10 weeks in the spring and 10 weeks in the fall)

� Saved $15-20 million dollars


Project Overview:� Customer: PEPCO� Location: Dickerson, Maryland� Length: 100 conductor miles� Voltage: 230 kV

Challenge:� Upgrade 2 critical lines in during limited power

outage

Large Ampacity Increase in Populated Area


Solution: 3M ACCR 1590 Lapwing (800 mm2)3M ACCR 1033 Curlew (525 mm2)

Results:� Installation met all project objectives� Additional projects planned� Operating reliably since 2011� Additional projects planned


Long-span Water CrossingsProject Overview:� Customer: BC Hydro/BCTC� Project: Vancouver Island Transmission

Reinforcement, Montague and Samsun Crossings� Location: Vancouver Island� Length & Voltage: 2 miles (3.2 km), 230 kV

Challenge:� Upgrade double circuit 230 kV line with several long

water crossings in remote location� Includes 5,800 ft (1.8 km) single span



� Includes 5,800 ft (1.8 km) single span� Extremely difficult to replace existing towers or add

new towers� Challenging weather conditions

Solution: 3M ACCR 788 kcmil (400mm2)

Results:� Very challenging upgrade completed as planned� Reduced environmental impact and construction costs

by re-using existing towers� Preserved the existing sightline� Operating reliably since 2008

Electrical Markets DivisionBC HydroVancouver, Canada

• Flooding collapsed tower on bank of Fraser River putting key 230 kV line out of service

• 3M designed, qualified, manufactured, delivered, & helped install a custom conductor in 4 months that eliminated need for tower


Electrical Markets DivisionLarge Ampacity Upgrade in Congested CityProject Overview:� Customer: Shanghai Electric Power Company Ltd� Project: YangGao to XinZhou� Location: Shanghai, China. � Length & Voltage: 60 Conductor Miles (96.6 km);

10 circuit miles(16.1 km); 115 kV

Challenge:� Increase capacity to meet growing peak demand in

central Shanghai for 2010 World Expo



central Shanghai for 2010 World Expo� Limited outage window for upgrade� Limited access for pull sites


Results:� Doubled growing� Used only existing towers� Installed in 18 days � Provided fast, cost-effective option for delivering

additional energy� Operating reliably since 2007

“Based on the October 14 line energizing, 3M ACCR works well. After passing a real project’s running test, we believe 3M’s ACCR will have a brilliant future in field application and will help us enhance the city transmission network.” – Mr. Pan, Shanghai Power Yanggao Project designer.

Electrical Markets DivisionLarge Ampacity Increase in Congested CityProject Overview:� Customer: TATA Power� Project: Borivali to Malad� Location: Mumbai, India� Length & Voltage: 5 miles (8 km), 110 kV double

circuit, twin bundled

Challenge:� Urgent need for capacity increase 2 years after prior

upgrade



upgrade� Unauthorized 2-story hutments built under power lines

– Create clearance issues– Unauthorized local huts complicated installation

Solution: 3M ACCR 300 T-16 kcmil (150 mm2)

Results:� Capacity increased from 900 amps to 2,000

emergency� Resolved sag issue� Installation completed without disturbing hutments� 1st installation completed 2009, 2nd installation in 2010


Upgrade in Congested City withLimited Outage WindowProject Overview:

� Customer: Manila Electric Company (MERALCO)

� Project: Novalishe-Kaybiga Line

� Location: Manila, Philippines

� Length & Voltage: 7.22 conductor miles (11.55 km), 2.1 circuit miles (3.4 km); 115 kV

Solution: 3M ACCR 795 T-16 (418 mm2)


Results:� Increased line capacity to meet growing demand

� Upgrade completed at night to avoid peak load and minimize disturbance on major city road

� Much faster and less expensive than original plan to replace poles and install bundled 795 ACSR

� Avoided difficult right-of-way issues

� Completed in 2010, 2nd project underway


Upgrade River Crossing

Project Overview:� Customer: Companhia de Transmissao de Energia

Eletrica Paulista (CTEEP)� Project: Jup-Tri Paraná River crossing � Location: Border of São Paulo and Mato Grosso do Sul

States, Brazil� Length & Voltage: 2 miles (3.2 km) double circuit 138 kV

Challenge:� Increase ampacity with minimal environmental impact� Long river crossing using only the existing towers



� Long river crossing using only the existing towers� High wind loads and temperature

Solution: 3M ACCR 300 kcmil (150 mm²)

Results:� Increased ampacity 220% with existing towers� Conductor Installation completed in 6 days� Operating flawlessly since January 2009

“The 3M ACCR unique features were essential for us to choose 3M as the supplier for this transmission line. We needed a product that could accomplish the TL needs, while being reliable and cost effective.” says CTEEP engineering manager Caetano Cezario Neto.


Upgrade Line in Wetlands & Environmentally Sensitive Area

Project Overview:� Customer: CPFL Piratininga

� Project: Henry Borden Jabaquara 1-2 and 3-4

� Location: Cubatão, São Paulo, Brazil

� Year Installed: 2010

� Length & Voltage: 50 Conductor miles (80 km), 7.5 circuit miles (12 km); 138 kV

Solution: 3M ACCR 780-T10 (150 mm2)


Results:� Installed conductor with the same mechanical

characteristics as the old conductor

� Avoided environmental impacts of building a new line through a marshy flood plain

� Reduced installation time to upgrade ampacity

� Performed the upgrade while keeping one circuit live

� Minimized crew time in places with challenging access or critical areas

“We would have required two sets of foundations in that difficult terrain, taking an estimated 10 months to complete. The ACCR stringing needed only 4 months, with no construction time”. – Paulo Ricardo Bombassaro Engineering Director of CPFL Piratininga


Project Overview:

� Customer: AES Electropaulo

� Project: Bandeirantes - Itaim Line Location: Sao Paulo, Brazil

� Length & Voltage: 1 mile, double circuit, 88 kV

Solution: 3M ACCR 795TW T13 Condor

Results:

� >100% ampacity increase

� Night time Installation completed in 2011

Ampacity Upgrade in Congested City



Ampacity Upgrade in Large City

Project Overview:� Customer: MOESK

� Project: Ochakovo-Odintsovo Line

� Location: Moscow, Russia

� Line Length: 13.3 km (8.26 miles) x 2 circuits

� Voltage upgraded from 110 kV to 230 kV

Challenge:� Large Temperature Variations



� Large Temperature Variations

� Heavy Ice & Wind

Solution: 3M ACCR 477-T16 Hawk (238 mm2)

Results:� Increased ampacity 98% using existing towers

� Saved Time

� Minimum impact on surrounding area

� Operating reliably since 2008

Electrical Markets DivisionProject Profile: Capacity Increase

Project Overview:� Customer: Chita Energo� Project: Line 65 – 65 Reconductoring� Location: Chita, Russia� Length & Voltage: 1.7 km (1.5 miles) x 2 circuits,

110 kV

Challenge:� Use existing towers and maintain clearance over

under-build� Extremely cold temperatures



� Extremely cold temperatures

Solution: 3M ACCR 477-T13 Flicker (238mm2)

Results: � Upgrade completed as planned using existing

towers� Operating reliably since December 2007

39


Project Profile: Load Growth Due to Renewables

Project Overview:� Customer: E.ON Netz GmbH� Project: Ostermoor - Marne� Location: Brunsbüttel, Germany� Length & Voltage: 0.9 km, 110 kV line

Challenge:� Significantly increase transmission capacity to

support load growth created by renewable energy (on-shore wind farms)

� Underbuild 20 kV line owned by other utility



“Up to now we are very content with the measured sag values vs. the prediction; the predicted values fit the measured ones very well..” - Reinhold Kliegel, head overhead line technology, E.ON Netz GmbH

� Underbuild 20 kV line owned by other utility


Results:� Installation and operation without any problems� Achieved accurately predicted sag� Operational since December 2009


Conductor Qualification & Pilot Line on Backbone GridProject Overview:� Customer: RTE

� Location: Brittany, France

� Project: Avoine-Distré

� Length & Voltage: 1.2 km double bundled, double circuit 400 kV double line. 15 km (9 miles) of conductor

Challenge:� Qualify conductor for challenging applications in


� Qualify conductor for challenging applications in France’s backbone transmission grid

� Long spans (400 m), high tension

Solution: 3M ACCR 1033 T-28 TW (528mm2)

Results:� 3M ACCR successfully passed rigorous qualification

testing

� Installation competed flawlessly in 2010

� 2nd project scheduled



> 90 Installations Worldwide> 11 Years Field Experience100% Successful Installations

42


Evaluating ACCR for Your Grid

� What are the biggest transmission challenges you face at this time?

� Do you have any thermally constrained lines?

� Do any of your projects include?

– Large ampacity increases– Limited outage window to complete upgrade– Need for quick access to renewables– Lines through congested cities


– Lines through congested cities– Difficult to reach terrain (mountains, wetlands, preserves)– Long span crossings (rivers, valleys,…) – Clearance or compliance issues

� Let 3M engineers help you evaluate ACCR as a potential solution

– Quickly screen projects for feasibility– Recommend optimum solution– Assist on engineering studies and cost estimates Project Input

Form available at 3M.com/accr


Be Informed, Be Confident

� 3M Team is always available to answer your questions and assist with lined designs

� 3M.com/accr gives you easy access to extensive information whenever you need it

– Conductor performance properties, specifications, and test data– Accessory information


– Accessory information– Design software wire files– Installation guidelines– Customer installation case studies

� Confer with utilities who have installed ACCR

� Visit an ACCR installation to answer your construction questions

� Visit 3M to see how we design, make, test and deliver ACCR

3m.com/accr

ACCRTM

More Amps

More Confidence

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