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ASSET MANAGEMENT Services and replacement solutions from MR 2013

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THE AVERAGE AGE OF INSTALLED TRANSFORMERS IS INCREASING AROUND THE GLOBE

Avg. age of 41 years

Avg. age of 36 years

Avg. age of 33 years

Avg. age of 35 years

Avg. age of 22 years

Avg. age of 31 years

Avg. age of 26 years

Average age of installed transformers in network operations (source: various) Examples: Canada, Brazil, Great Britain, Qatar, India, Japan, New Zealand

Croatia: Transformer built in 1954

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WE HAVE FIELDS OF ACTION FOR THIS

Diagnosis e.g. measurements on a tap changer and transformer

Maintenance & Repairs Around the world by trained and certified service technicians

Training Fully equipped training centers on all continents

Spare parts & Accessories e.g. innovative transformer accessories from Messko Instruments

Consultancy & Engineering Technical support throughout the entire life cycle

Retrofit & Modernization e.g. replacement solutions and actions for extending service life

Monitoring Condition-oriented equipment monitoring

Installation & Commissioning Installation, function tests and transformer component retrofitting

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DIAGNOSIS WHAT WE CAN DO

I  Increased reliability through preventive condition assessment

I  Oil diagnostics and dynamic resistance measurement (TAPSCAN® DRM)

I  Electric and dielectric measurements (DIN/IEC)

Transformers – measuring devices at Reinhausen South Africa PrimeLab at Messko Instruments

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DIAGNOSIS DYNAMIC RESISTANCE MEASUREMENT (TAPSCAN® DRM)

Measuring the direct current resistance of a complete transformer winding I  Assessment of the diverter switch operation for an

on-load tap-changer by recording the entire switching sequence

I  Comparison with recorded motor current

I  Interpretation of the curve

→Quick diagnostics using diverter switch criteria and the mechanical behavior of the OLTC (3-phase measurement possible)

→Comparison with fingerprint/earlier measurement/measurements in the MR database

→Combination with gas-in-oil analysis

→Useful method for classifying an on-load tap-changer population (aged tap changers) Our measuring instrument partner:

Ibeko AB (DV Power)

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DIAGNOSIS OIL ANALYSIS

Oil analysis for transformers and on-load tap-changers I  The Duval Triangle exists for on-load tap-changers,

but oil analysis is only informative for VACUTAP OLTCs (arcing in vacuum interrupters)

I  We are familiar with typical gas patterns for VACUTAP on-load tap-changers (resistor and reactor) and the influencing factors (load, number of switching operations, oil temperature)

I  Carbon monoxide is an indicator for thermal overload and, together with hydrogen, an indicator for oil degradation

→A Messko DGA sensor for this purpose is being launched on the market in 2013

I  All analyses by Messko PrimeLab® oil laboratory. An oil collection kit is also available.

Duval Triangle for on-load tap-changers

Typical gas pattern for "VM" vacuum on-load tap-changers without acetylene

not measurable

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MAINTENANCE AND REPAIRS WHAT WE CAN DO

I  Global service center network

I  Highly trained and certified service technicians

I  24/7 availability

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MAINTENANCE AND REPAIRS ON-SITE OR IN OUR WORKSHOPS

Premium Service Provider (PSP) I  Maintenance and repair by our specially trained

service technicians

→Training and testing for each tap changer type

→Regular retesting

→Global "PSP support points"

I  24 month warranty on all the work we do

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MAINTENANCE AND REPAIRS FOR OILTAP® I TYPE ON-LOAD TAP-CHANGERS

Why is maintenance necessary? I  Wear on mechanical components such as energy

accumulator springs (depending on type and number of switching operations)

I  Contact wear or wear difference between switching contacts and resistor contacts(depending on material, load current and the number of switching operations)

I  Carbon build-up in insulating oil caused by arcing

I  Electric strength of the insulating oil in the on-load tap-changer (both dependent on the load current and number of switching operations)

→The criteria for when an on-load tap-changer requires maintenance are the number of tap-change operations and a time interval, whichever comes first

OILTAP® M: energy accumulator spring (top) worn contact (bottom left) good-as-new contact (bottom right)

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MAINTENANCE AND REPAIRS FOR OILTAP® II TYPE ON-LOAD TAP-CHANGERS

Scope of maintenance I  Removal and installation of the diverter switch insert

I  Cleaning and inspection of mechanical equipment

I  Visual inspection of insulation distance of the diverter switch insert and oil compartment

I  Part replacement (such as springs or sets of contacts) including a diverter switch insert update

I  Replacement of switching oil (new oil with electric strength of > 50 kV/2.5 mm, in accordance with IEC 60156)

I  Determining contact wear

I  Measuring transition resistors

I  Checking the motor-drive unit, drive shaft and protective relay

I  Function test

"D" tap changer maintenance in Brazil

Transition resistors/contact wear measurement

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MAINTENANCE AND REPAIRS WORK ON NON-MR TAP CHANGERS

Maintenance or replacement? I  We have databases and technical

documentation on all of our own on-load tap-changers in addition to the following types:

-Trafo-Union, AEG and Siemens

-Westinghouse UVT, UTT and UTS

-ABB, Elprom and additional manufacturers

-MR-licensed tap changers

I  Maintenance/replacement evaluation specifically for older models in regard to costs, spare part availability, maintenance intervals, etc.

I  Quick condition assessment possible using measurements (TAPSCAN® DRM)

I  We can replace any motor drive unit brand!

"ABB" (top) and "Elprom" (bottom) on-load tap-changers from Germany

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SPARE PARTS AND ACCESSORIES WHAT WE CAN DO

I  Worldwide availability of spare parts for entire product life

I  Own workshop for repairs and special components

I  Innovative transformer accessories

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SPARE PARTS AND ACCESSORIES FOR EXTENDING THE SERVICE LIFE OF YOUR TRANSFORMERS

Before During After

We provide repairs on site or in our workshop and deliver to anywhere in the world I  Spare parts for all of the on-load tap-changers produced by MR

I  Repair or even replacement of on-load tap-changer sets from individual 'third-party tap changers', such as Elprom and General Electric

I  Special designs for replacing on-load tap-changers and motor-drive units as well as transformer accessories. The images below show the replacement of an old dial thermometer with a new 'Messko' type in a MRiB protective housing in South Africa

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ASSET MANAGEMENT SOLUTIONS: SERVICE PORTFOLIO FOR BUSHINGS

Service und Exchange of transformer components, also as project business

Service Portfolio I Measurements of bushings (tan∆, PD, capacity,…), on- or offline

I Diagnostics and recommendations I Procurement of standard- and special bushings I Exchange of bushings on-site, e.g. aged bushings to silicon bushings

I All services can be ordered separately or in connection with diagnostics / service / exchange of on-load tap-changer and transformer components

I Complete project management

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TRAINING WHAT WE CAN DO

I  Fully equipped training centers on all continents

I  Tailored training programs

I  On-site training

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TRAINING ON-SITE OR AT OUR TRAINING CENTERS

Regensburg, Germany

Sao Paulo, Brazil Suzhou, China

Kuala Lumpur, Malaysia

Training centers on all continents I  Three training levels:

Basic, Specialists, PSP

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CONSULTANCY AND ENGINEERING WHAT WE CAN DO

I  Project planning and implementation of complete solutions

I  Technical support in product life cycle

I  Development of tailored service concepts City  of  Pra+  McGraw  Tie  Transformer  115/12.47  Tie  Sub  West   Day  

    1   2   3   4   5   6   7   8   9   10   11   12   13   14  Task  list                                                          

Mobilize/set  up                                                          Tanker  stage                                                          

Acquire  manliMs                                                          Crane                                                          

Prelim  TTR/oil  sample/Meggar/PF                                                          Drain  oil  from  main                                                          Drain  oil  from  LTC                                                          

Remove  and  regasket  bushings                                                            Remove  and  regasket  radiators                                                            

Set  blankets  /  fire  cloth                                                          Internal  inspecVons                                                          

DETC  inspecVon  and  cleaning                                                          Tag  and  disconnect  LTC  leads                                                          

Set  crane/remove  LTC                                                          Set  and  place  new  LTC                                                          

Cut,  set,  tape  new  leads                                                          Check  BIL  clearances                                                          

 12  hr  vac;  fill  dry  air;  set  12  hrs                                                          Dewpoint                                                          Vacuum                                                          

Vac  fill  and  top  off                                                          Test/funcVonal  check                                                          

Wiring                                                          

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RETROFIT AND MODERNIZATION WHAT WE CAN DO

I  Modernization and retrofit solutions for transformers

I  Extension of service life and assurance of availability

I  Complete project handling

Retrofit of 'M' into 'VM', Indonesia Retrofit of Westinghouse UVT into RMV-II

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RETROFIT AND MODERNIZATION TURNKEY REPLACEMENT PROJECTS

Complete project handling by MR I  Project planning and organization

I  Technical clarification

I  Preparation of all components

Example 1: Great Britain

Replacement of English Electric type OLTC including design of a special attached tank for Scottish &

Energy (90MVA, 132kV power grid transformer)

Example 2: Lithuania

Replacement of RS-4 type OLTC (Elprom). Complete project management by MR. Customer: ELGA (6.3MVA, 115kV transformer from Togliatti)

Retrofit in Great Britain

Retrofit in Lithuania

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RETROFIT AND MODERNIZATION TURNKEY REPLACEMENT PROJECTS

Example 3: Brazil

Replacement of FKT-MI1000 type OLTC (Toshiba) with VACUTAP® VM-II-650Y for the Copel power company in Brazil (150MVA, 220kV transformer from Fuji)

Example 4: USA

Turnkey replacement of LRT200 type OLTC (General Electric, bolt-on tap-changer) with VACUTAP® RMV-II for the Delmarva Power power company on the US East Coast (22.4MVA, 69kV transformer)

→ Turnkey replacement includes project management, measurements on the transformer (before/after), oil treatment and associated work.

→ In addition, old transformer accessories are replaced with maintenance-free 'Messko' versions

Retrofit in Brazil

Retrofit in the USA

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RETROFIT AND MODERNIZATION "SMART" REPLACEMENT SOLUTIONS

VM LUE (VACUTAP® VM diverter switch insert) Replacement of the "M" type diverter switch insert (oil) with a "VM" type (vacuum)

Also for licensed tap changers (such as Alstom)

More than 100 diverter switch inserts already replaced

OILTAP® MSE and VME

A 340 A on-load tap-changer with a special adapter head for replacing a Bulgarian on-load tap-changer of RS3, RS4 or RS9 type.

RMT slide-in retrofit

Replacement solution for the UTT type from Westinghouse slide-in solution with 1,320A, 300 – 600V maintenance-free to 500,000 switching operations

SeAh Besteel, South Korea

OILTAP® MSE RMT-I slide-in

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INSTALLATION AND COMMISSIONING WHAT WE CAN DO

I  Retrofitting transformer components

I  Performance of correct function

I  Documentation and approval

TRAFOGUARD® commissioning in India ConEd phase shifter commissioning (New York) in 2013

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INSTALLATION AND COMMISSIONING RETROFITTING TRANSFORMER COMPONENTS

Attaching and commissioning Example 1: Control device upgrade in Australia

Modernization with TAPCON® 240 with DNP 3.0 communications protocol in order to enable remote communication using centralized network operation. Customer: BHP Billiton (15MVA, 66kV transformers)

Example 2: Replacement of motor-drive units in Germany

Replacement and commissioning of two motor-drive units including monitoring systems at the Gundremmingen nuclear power plant. Customer: e.on/RWE, 1,000MVA machine transformer, 27/420kV)

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MONITORING WHAT WE CAN DO

I  Monitoring of key system components

I  Automatic error detection and trend analysis

I  Condition-oriented operational management

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MONITORING INTEGRATED SMART MODULE

Monitoring modules integrated into motor-drive unit I  collection of information from different sensors

I  conversion of signals and data transmission

I  tailored to customer requests – perfect as retrofit solution

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ASSET MANAGEMENT SERVICE FROM REINHAUSEN

Used around the globe I  Complete project handling from analysis to the final report

I  Solutions from experts from a single source

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