Motors I Automation I Energy I Transmission & Distribution I Coatings. Transmission & Distribution Line of Products and Solutions

Transcrição

1 Motors I Automation I Enery I Transmission & Distribution I Coatins Transmission & Distribution Line of Products and Solutions

2 Welcome to WEG Transmission & Distribution 1 lare roup composed of five units which work in an interated manner, searchin for the best solutions for each customer From a small electric motor plant in Santa Catarina, WEG has become an industry focused on syneretic electro-electronic solutions present worldwide. The companies of the roup are oranized into five major businesses - Transmission & Distribution, Enery, Automation, Motors and Coatins - and reflect a true interation in the supply of full solutions to any industry. 100 countries in all continents can count on WEG s presence, with technical-commercial teams and manufacturin plants strateically located WEG has 14 industrial parks in Brazil. Blumenau, Guaramirim, Gravataí, Itajaí, Linhares, São José, Joaçaba, Manaus, São Bernardo, São Paulo, Indaiatuba, Mauá and Jarauá do Sul - the company s headquarters with two industrial parks. It also has plants abroad (Arentina, Austria, South Africa, USA, Mexico, China, India and Portual), and commercial offices in the five continents, with presence in over 100 countries and over 26 thousand employees. 33,000 MVAs/year represent the manufacturin capacity of WEG Transmission & Distribution. This capacity is the reflection of a production process hihly verticalized, providin flexibility and short delivery time Focused on the industry, as well as on the eneration, transmission and distribution, WEG Transmission & Distribution has five manufacturin plants (three in Brazil and two in Mexico). The portfolio is composed of Products (a wide rane of transformers, besides hih voltae equipment), Full Solutions (from turnkey conventional substations to mobile substations and transformers) and Services (which encompass retrofittin and repowerin of transformers). This diversity represents an annual manufacturin capacity of approximately 15,000 units and 33 GVAs.

3 O caminho de sucesso empresarial de Werner Ricardo Voit, Eon João da Silva e Geraldo Werninhaus começou em16 de setembro de 1961, quando os três fundaram a Eletromotores Jarauá. Anos mais tarde, a empresa criada por um eletricista, um administrador e um mecânico viria a anhar uma nova razão social, a Eletromotores WEG SA. O nome é a feliz junção das iniciais dos três fundadores. A trajetória da empresa ao lono destes anos é marcada pelo êxito. Uma das maiores fabricantes de equipamentos elétricos do mundo, a WEG atua nas áreas de comando e proteção, variação de velocidade, automação de processos industriais, eração e distribuição de eneria e tintas e vernizes industriais. The WEG Group in the World No país, o rupo tem sua sede e principais unidades industriais em Jarauá do Sul/SC. Suas demais fábricas estão espalhadas por Rio Grande do Sul (Gravataí), Santa Catarina (Blumenau, Guaramirim, Itajaí e Joaçaba), São Paulo (São Paulo, São Bernardo do Campo e Hortolândia), Amazonas (Manaus), Espírito Santo (Linhares). No exterior, a WEG possui unidades fabris na Arentina, México, Portual, África do Sul, China e Índia, além de instalações de distribuição e comercialização nos EUA, Venezuela, Colômbia, Chile, Alemanha, Inlaterra, Bélica, França, Espanha, Itália, Suécia, Austrália, Japão, Cinapura, Índia, Rússia e nos Emirados Árabes Unidos. Produzindo inicialmente motores elétricos, a WEG começou a ampliar suas atividades a partir da década de 80, com a produção de componentes eletroeletrônicos, produtos para automação industrial, transformadores de força e distribuição, tintas líquidas e em pó e vernizes eletroisolantes. Cada vez mais a empresa está se consolidando não só como fabricante de motores, mas como fornecedor de sistemas elétricos industriais completos. O caminho de sucesso empresarial de Werner Ricardo Voit, Eon João da Silva e Geraldo Werninhaus começou em 16 de setembro de 1961, quando os três fundaram a Eletromotores Jarauá. Anos mais tarde, a empresa criada por um eletricista, um administrador e um mecânico viria a anhar uma nova razão social, a Eletromotores WEG SA. O nome é a feliz junção das iniciais dos três fundadores. A trajetória da empresa ao lono destes anos é marcada pelo êxito. Uma das maiores fabricantes de equipamentos elétricos do mundo, a WEG atua nas áreas de comando e proteção, variação de velocidade, automação de processos industriais, eração e distribuição de eneria e tintas e vernizes industriais. No país, o rupo tem sua sede e principais unidades industriais em Jarauá do Sul/SC. Suas demais fábricas estão espalhadas por Rio Grande do Sul (Gravataí), Santa Catarina (Blumenau, Guaramirim, Itajaí e Joaçaba), São Paulo (São Paulo, São Bernardo do Campo e Hortolândia), Amazonas (Manaus), Espírito Santo (Linhares). No exterior, a WEG possui unidades fabris na Arentina, México, Portual, África do Sul, China e Índia, além de instalações de distribuição e comercialização nos EUA, Venezuela, Colômbia, Chile, Alemanha, Inlaterra, Bélica, França, Espanha, Itália, Suécia, Austrália, Japão, Cinapura, Índia, Rússia e nos Emirados Árabes Unidos. Produzindo inicialmente motores elétricos, a WEG começou a ampliar suas atividades a partir da década de 80, com a produção de componentes eletroeletrônicos, produtos para automação industrial, transformadores de força e distribuição, tintas líquidas e em pó e vernizes eletroisolantes. Cada vez mais a empresa está se consolidando não só como fabricante de motores, mas como fornecedor de sistemas elétricos industriais completos. O caminho de sucesso empresarial de Werner Ricardo Voit, Eon João da Silva e Geraldo Werninhaus começou em16 de setembro de 1961, quando os três fundaram a Eletromotores Jarauá. Anos mais tarde, a empresa criada por um eletricista, um administrador e um mecânico viria a anhar uma nova razão social, a Eletromotores WEG SA. O nome é a feliz junção das iniciais dos três fundadores. A trajetória da empresa ao lono destes anos é marcada pelo êxito. Uma das maiores fabricantes de equipamentos elétricos do mundo, a WEG atua nas áreas de comando e proteção, variação de velocidade, automação de processos industriais, eração e distribuição de eneria e tintas e vernizes industriais. No país, o rupo tem sua sede e principais unidades industriais em Jarauá do Sul/SC. Suas demais fábricas estão espalhadas por Rio Grande do Sul (Gravataí), Santa Catarina (Blumenau, Guaramirim, Itajaí e Joaçaba), São Paulo (São Paulo, São Bernardo do Campo e Hortolândia), Amazonas (Manaus), Espírito Santo (Linhares). No exterior, a WEG possui unidades fabris na Arentina, México, Portual, África do Sul, China e Índia, além de instalações de distribuição e comercialização nos EUA, Venezuela, Colômbia, Chile, Alemanha, Inlaterra, Bélica, França, Espanha, Itália, Suécia, Austrália, Japão, Cinapura, Índia, Rússia e nos Emirados Árabes Unidos. Produzindo inicialmente motores elétricos, a WEG começou a ampliar suas atividades a partir da década de 80, com a produção de componentes eletroeletrônicos, produtos para automação industrial, transformadores de força e distribuição, tintas líquidas e em pó e vernizes eletroisolantes. Cada vez mais a empresa está se consolidando não só como fabricante de motores, mas como fornecedor de sistemas elétricos industriais completos. Headquarters and Manufacturin Plants (Brazil) Manufacturin Plants (other countries) Branches O caminho de sucesso empresarial de Werner Ricardo Voit, Eon João da Silva e Geraldo Werninhaus começou em16 de setembro de 1961, quando os três fundaram a Eletromotores Jarauá. Anos mais tarde, a empresa criada por um eletricista, um administrador e um mecânico viria a anhar uma nova razão social, a Eletromotores WEG SA. O nome é a feliz junção das iniciais dos três fundadores. WEG Manufacturin Plants Transmission & Distribution Blumenau/SC, Brazil. Itajaí/SC, Brazil. Gravataí/RS, Brazil. Huehuetoca, Mexico. Guaramirim/SC, Brazil. Tizayuca, Mexico. Other Manufacturin Plants of the Group Jarauá do Sul/SC, Manufacturin Plant I, Brazil. J arauá do Sul/SC, Manufacturin Plant II, Brazil. Joaçaba/SC, Brazil. Linhares/ES, Brazil. WEG Museum, Brazil. São José/SC, Brazil. Manaus/AM, Brazil. San Francisco, Arentina. Córdoba, Arentina. Buenos Aires, Arentina. Minneapolis, USA. Johannesbur, South Africa. Nanton, China. Hosur, India. Maia, Portual. Viena, Austria. São Bernardo do Campo/ SP, Brazil. São Paulo/SP, Brazil. Mauá/SP, Brazil.

4 Excellence in technoloies of power supply Industrial Processes Technoloy and Verticalization... pae 05 Products Transformers (oil and dry-type) and Disconnectors... pae 08 Services Retrofittin and Repowerin... pae 10 Substations Conventional Substations and Mobile Solutions...pae 12 Reliability Commitment and Quality...pae 14 Supplies Experience and Know-how... pae 16 4 Line of Products and Solutions

5 Industrial processes A verticalized productive process, combined with the customization of projects, is an advantae WEG Transmission & Distribution offers. Those advantaes provide the customers with more flexibility and shorter delivery time, besides ensurin a hih quality standard durin the manufacturin staes. Modern machinery and qualified technical teams ensure a wide rane of products, addin value to every solution developed. Enineerin Wire drawin Cut and assembly of the core WEG applies its own technoloy, fully developed by its technical staff. They are enineers and technicians constantly enaed in researchin, developin and desinin new projects, so as to offer the customers products with hih levels of reliability, efficiency and durability. In this specific structure, the latest technical concepts and computer tools are available, combined with the capacity and experience of the WEG technical team. The copper, aluminum and transposed cables (CTCs) are made by WEG itself and the production capacity is 1,800 t/ month. The manufacturin line of transposed cables uses copper wire insulated with varnish and/or thermostabilized material (Class E 120 º C). Usin this type of cable improves the mechanical and electrical quality of the windins, ensurin endurance to short circuit efforts, reduction of eddy current losses in the windins and shorter lead time. It evenly distributes the current between the wires of the turns and allows a more compact construction, reducin the mass of the transformer. In the manufacture of the core, WEG follows the core-type concept and the assembly is done with orientedrain silicon steel laminations, and the step-lap standard may be used, which reduces noise, losses with no load and losses with excitin current. The fastenin system of the core was developed to ensure that the laminations remain toether, ivin support to the windins. This project uarantees excellent resistance to short circuit forces and safety in the transportation of the transformers. Line of Products and Solutions 5

6 Industrial processes Windin Assembly room of the active part Vapour phase The windin area complies with the strictest quality standards, combinin cleanliness, state-of-theart materials and hih levels of control, which provides accuracy from the project to the execution. This is a closed environment with hih control of temperature and air relative humidity. The windin process can be accomplished by horizontal or vertical winders (platform and pit). The assembly of the active part is performed in an isolated room with controlled temperature. All those factors provide better cleanliness, improvin the process quality. In order to dry the active part, WEG uses a controlled steam dryin system. WEG manufacturin plants have vapor phase equipment manufactured by Micafil (Switzerland). This well-known method for dryin active parts of lare power transformers and reactors makes the treatment process fast and efficient, maintainin their durability. Process verticalization. Flexible and short delivery time. 6 Line of Products and Solutions

7 Tank manufacture Heat exchaner manufacture Test laboratory Specific area of 7,800 m² for the manufacture of tanks and structural components painted with WEG coatins for different processes, dependin on the necessity/paintin plans, accordin to the conditions of the environment where the product will be used. The heat exchaners are manufactured in an area of 3,150 m 2 with an automatic part manufacturin line, developed with Swiss technoloy (Schlatter) in a partnership with WEG toolin department. The heat exchaner plant has a production capacity of 400 t/month and has tanks for specific treatments, providin the product with special features and increased protection. Desined accordin to the latest concepts of hih voltae technoloy, WEG laboratories are used to perform routine, type and special tests, followin both national and international norms and standards. Technical staff. Experience and competence toether. Line of Products and Solutions 7

8 One product for every need Oil Transformers Reduction of weiht and dimensions, types of insulatin oils, loner lifespan and monitorin systems are just some of the items evaluated by WEG s technical team in order to develop oil transformers that provide the customer with the best solution. The portfolio includes a complete line of distribution and power transformers up to 550 kv, with either mineral oil, reducin the equipment cost, or veetal oil, sinificantly reducin environmental impacts. Oil Transformers Distribution transformers Industrial transformers Underround-type and submerible transformers Power transformers and reactors Transformers for furnaces and for rectification systems

9 Dry-Type Transformer The transformers insulated with epoxy are the best option to meet the demand for transformers that provide more safety, use less space and reduce installation and maintenance costs. This product line offers solutions for all kinds of environments. The vacuum encapsulation process and the quality of the resin prevent partial dischares and sinificantly increase the useful life of the transformer. They are available with outputs from 300 to 20,000 kva, in voltae classes up to 36.2 kv, with deree of protection up to IP55. Disconnectors Offerin more and more complete solutions, WEG also has a line of Disconnectors. Their function is to ensure the insulation of equipment, sections of lines or substations, allowin the visual confirmation that the insulated sement is de-enerized. They are available in voltae levels from 15 to 550 kv, with current levels from 630 to 4,000 A and short circuit levels up to 50 ka/1s (other voltaes, current and short circuit levels* upon consultation). * T he current and short circuit levels are not applied to all equipment and all voltae levels. Dry-Type Transformer Disconnectors

10 Retrofittin and repowerin services Receivin Disassembly and analysis Retrofittin and repowerin With WEG quality standard, your service requests will be answered by our sales force with lobal presence. Retrofittin and Repowerin at the Plant in Power Transformers up to 550 kv Technical Scope of the Service For repairs and repowerin, a full assessment of the transformer operatin conditions is carried out, includin operational risks, capacity to withstand overloads and estimated remainin useful life. Transformers of any brand can be redesined and rebuilt usin the same technoloy applied in the manufacture of WEG transformers. Older transformers almost always allow the redesin with increased power, with the main benefit of lower cost compared to the price of new equipment. All this work is carried out by experienced teams specialized in assemblies in the field. Main Services Disassembly in the field for transportation Receivin tests Openin of the equipment in the plant Disassembly of the active part Analysis/inspection of coils and complete rewindin Sheet metal shop, sandblastin and paintin services Disassembly and/or manufacture of new core Replacement or inspection, cleanin and testin of the accessories Complete assembly of the equipment Testin accordin to ABNT 5356/5380 Disassembly for transportation Assembly, installation and commissionin of the equipment 10 Line of Products and Solutions

11 Tests Transportation Installation, commissionin and assisted start-up Repair in Field The repair of transformers in the field is one way to ensure cost-effectiveness when the equipment is installed in remote places or places with difficult access. The road conditions, and even the installations, often make the removal troublesome. The work in the field reduces lead time and eliminates complex and expensive transportation and loistics costs. Structure for Repairs in Field WEG has several tools and equipment necessary to prepare the site for the services, involvin personnel and manufacturin resources, so as to ensure the same quality standards as of the projects executed at the factory. The field service team performs technical inspections, disassemblies and assemblies (transformers, laminations, coils) and carries out routine hih-voltae testin, ensurin the reliability of the equipment before connectin it to the power line. Low investment and warranty of new product. Line of Products and Solutions 11

12 Solutions customized for your company Conventional Substations Full turnkey solutions The substation department has an experienced and skilled team responsible for providin turnkey substations - from prospection, definition of a specific solution for the customer and project manaement and administration, to manufacture and assembly. It has proven experience, havin already delivered and powered up over 250 substations in all voltae levels up to 550 kv. WEG analyzes and executes HV and MV projects, such as: Electric, electromechanic and civil Studies of DC / Selectivity / Ground-rid / Protection / Systemic Supervisory System / Demand Control WEG offers the customers contracts on a turnkey basis for hih voltae substations, mobile substations and mobile transformers in all market sectors (industries, utility companies, eneration - hydro, thermal and wind). Another advantae is the interface with the other products it manufactures: HV devices (disconnectors, circuit breakers, sure diverters, CTs, PTs) HV and MV/LV transformers (oil and dry types) Panels - control/protection and auxiliary services Cubicles - control/feeder bay protection Supervisory system Generators Experienced staff and enineerin specialized in developin efficient and optimized projects.

13 Mobile Transformers and Substations Practical solutions to restore power Developed with the latest components of the market, the Mobile Solutions (Transformers and Substations) ensure dynamic operation and aility, bein easy to install wherever necessary. They are used for emerencies and scheduled maintenances in power transformers and substations, allowin the jobs to be carried out without interruptin the power supply. Main Benefits Mobility and flexibility in emerency situations Reduction of enery supply interruptions System reliability Easy preventive and corrective maintenance Different transformin and switchin ratios Reduction of investments in spare equipment Optimization of size and weiht of equipment Temporary supply for seasonal loads, new consumptions and events Count on the leader in this kind of solution to develop the riht product for your needs.

14 Reliability Keepin the credibility and thrust of the customers is essential. Quality, Technical Assistance and Loistics are basic factors for the success of any business. It is the combination of those factors with the technoloical capacity which makes WEG a remembered and reconized brand on the market.

15 Quality System WEG Transmission & Distribution has the ISO 9001/2000 certification ranted by the Bureau Veritas Certification. The department of Quality Enineerin coordinates the execution of internal and external audits, as well as the WEG Quality and Productivity Proram, aimin at identifyin opportunities for improvements in processes and products, so as to ensure the continuous development of their quality. Warranty and Technical Assistance WEG offers warranty aainst manufacturin and part faults of its transformers, when operated under normal operatin conditions, with expiration dates as follows: Series products: 18 months from the issue of the invoice or 24 months from manufacturin date Enineered products: 12 months from the issue of the invoice or 18 months from manufacturin date It also provides its customers with full after-sales services, includin supervision of assembly, commissionin and start-up. In Brazil there are over 40 accredited technical assistants, formin the larest network of technical assistance in transformers of the country. Lead Time and Loistics WEG offers shorter lead time due to its vertical structure and a specific loistics department for land, air and sea transportation.

16 Supplies Power Transformers, Retrofittin and Repowerin Services Nokian Capacitors (Scotland) Transformer 225 MVA kv 2 Itaipu Binacional Sinle-Phase transformer 256 MVA kv - 60 Hz (Brazil) Sinle-Phase transformer 275 MVA kv - 50 Hz (Parauay) 3 VA Tech (Ecuador) Transformer MVA kv (2 units) 4 Anvil Minin (Democratic Republic of the Cono) Autotransformer 150 MVA kv (2 units) 5 COPEL (Brazil) Transformer 155 MVA kv (2 units) 6 Solar Turbines (USA) Transformer 75 MVA kv 7 Enería Latina (Chile) Transformer 100 MVA kv (2 units) Transformer 100 MVA kv 8 ISA/CTEEP (Brazil) Sinle-phase transformer MVA kv (4 units) 9 CHESF (Brazil) Sinle-phase transformer 185 MVA kv (4 units) 10 Compañia Minera Zaldivar (Chile) Transformer 60 MVA kv 11 Duke Enery (Brazil) Transformer 200 MVA kv 12 GE Hydro (Brazil) Transformer 311 MVA kv (4 units) 16 Line of Products and Solutions

17 Supplies Power Transformers, Retrofittin and Repowerin Services, Furnaces and Rectification Systems CESP (Brazil) Transformer 178 MVA kv 14 Eskom (South Africa) Transformer 80 MVA kv (5 units) 15 Tractebel Eneria - Suez Group (Brazil) Sinle-phase transformer 248 MVA kv 16 Eletronorte (Brazil) Transformer 150 MVA kv 17 Colbún (Chile) Transformer 150 MVA kv 18 Furnas (Brazil) Reactor MVA kv 19 Aços Villares (Brazil) Furnace transformer 75 MVA + 20% - 23 kv, 50 ka 20 Danieli Automation (Italy), installed in Syria Furnace transformer 72 MVA + 20% - 33 kv, 50 ka 21 Danieli Automation (Italy), installed in Brazil Furnace transformer 100 MVA + 20% - 33 kv, 60 ka 22 Danieli Automation (Italy), installed in Macedonia Furnace transformer 100 MVA - 33 kv, 61 ka 23 Ferbasa (Brazil) Furnace transformer MVA + 30% - 15kV, 81.4 ka 24 Cia Mineira de Metais (Brazil) Rectifier 44.5 MVA - 15 kv, 115 Line of Products and Solutions 17

18 Supplies Disconnectors, Conventional and Mobile Substations FURNAS (Brazil) Vertical break disconnector kv 26 CTEEP (Brazil) Horizontal semi-pantoraph disconnector kv 27 CHESF (Brazil) Vertical break disconnector kv 28 CEMIG (Brazil) Vertical semi-pantoraph disconnector kv 29 Eletronorte (Brazil) Vertical break disconnector kv 30 Eletrosul (Brazil) Vertical break disconnector kv 31 ISA/CTEEP (Brazil) Embu substation kv, 400 MVA and interal diital system 32 Vale (Brazil) Substation 242 kv, 180 MVA 33 Nestlé S.A. (Brazil) Substation 138 kv, 20 MVA and transmission line 34 Usina Sta. Terezinha (Brazil) Substation kv, 62.5 MVA 35 CEMAT - Grupo Rede (Brazil) Mobile substation 25 MVA - 145R72.5 kv R36.2/15/15R7.2 kv 36 AES Sul Distribuidora Gaúcha de Eneria S.A (Brazil) Mobile transformer 30 MVA - 145R72.5 kv R15 kv 18 Line of Products and Solutions

19 Products, Services, Solutions and Reliability Excellence in technoloies of power supply.

20 WEG Worldwide Operations ARGENTINA WEG EQUIPAMIENTOS ELECTRICOS San Francisco - Cordoba Phone: info-ar@we.net WEG PINTURAS - Pulverlux Buenos Aires Phone: tintas@we.net AUSTRALIA WEG AUSTRALIA Victoria Phone: info-au@we.net AUSTRIA WATT DRIVE - WEG Group Markt Piestin - Viena Phone: watt@wattdrive.com BELGIUM WEG BENELUX Nivelles - Belium Phone: info-be@we.net BRAZIL WEG EQUIPAMENTOS ELÉTRICOS Jarauá do Sul - Santa Catarina Phone: info-br@we.net CHILE WEG CHILE Santiao Phone: info-cl@we.net CHINA WEG NANTONG Nanton - Jiansu Phone: info-cn@we.net COLOMBIA WEG COLOMBIA Bootá Phone: info-co@we.net FRANCE WEG FRANCE Saint Quentin Fallavier - Lyon Phone: info-fr@we.net GERMANY WEG GERMANY Kerpen - North Rhine Westphalia Phone: info-de@we.net GHANA ZEST ELECTRIC GHANA WEG Group Accra Phone: info@zesthana.com.h INDIA WEG Electric India Banalore - Karnataka Phone: info-in@we.net WEG INDUSTRIES INDIA Hosur - Tamil Nadu Phone: info-in@we.net ITALY WEG ITALIA Cinisello Balsamo - Milano Phone: info-it@we.net JAPAN WEG ELECTRIC MOTORS JAPAN Yokohama City - Kanaawa Phone: info-jp@we.net MEXICO WEG MEXICO Huehuetoca Phone: info-mx@we.net VOLTRAN - WEG Group Tizayuca - Hidalo Phone: NETHERLANDS WEG NETHERLANDS Oldenzaal - Overijssel Phone: info-nl@we.net PERU WEG PERU Lima Phone: info-pe@we.net PORTUGAL WEG EURO Maia - Porto Phone: info-pt@we.net RUSSIA and CIS WEG ELECTRIC CIS Saint Petersbur Phone: info-ru@we.net SOUTH AFRICA ZEST ELECTRIC MOTORS WEG Group Johannesbur Phone: info@zest.co.za SPAIN WEG IBERIA Madrid Phone: info-es@we.net SINGAPORE WEG SINGAPORE Sinapore Phone: info-s@we.net SCANDINAVIA WEG SCANDINAVIA Kunsbacka - Sweden Phone: info-se@we.net UK WEG ELECTRIC MOTORS U.K. Redditch - Worcestershire Phone: info-uk@we.net UNITED ARAB EMIRATES WEG MIDDLE EAST Dubai Phone: info-ae@we.net USA WEG ELECTRIC Duluth - Georia Phone: info-us@we.net ELECTRIC MACHINERY WEG Group Minneapolis - Minnesota Phone: VENEZUELA WEG INDUSTRIAS VENEZUELA Valencia - Carabobo Phone: info-ve@we.net For those countries where there is not a WEG own operation, find our local distributor at Grupo WEG - Transmission & Distribution Business Unit Jarauá do Sul - SC - Brazil Phone: wtd@we.net Cod: Rev: 01 Date (m/y): 07/2013 The values shown are subject to chane without prior notice.