Power IT Liquid Filled Transformers. IEC standard, small and medium, rated power 2000kVA, HV 36kV

Transcription

1 Power IT Liquid Filled Transformers IEC standard, small and medium, rated power 2000kVA, HV 36kV

2 Even our standard solutions are special In almost every place where people live and work you will find at least one transformer. But as long as it keeps working and supplying power to the escalator in the department store, the hotel lift, the office computer, the oven in the local bakery, the farm machinery or the petrochemical plant nobody gives it a second thought. However, transformers are one of the most important units in every production process. Without them the core activities of nearly every business and factory would come to a standstill with serious financial consequences. After nearly 100 years developing and manufacturing transformers we are well aware of this dependency. This is why we never compromise on the performance, security or reliability of our products. Nor on design, materials, manufacturing methods, environmental protection or recycling. Our objective is to support you and to add value to your activities by offering a comprehensive range of top quality transformers. We also provide top class service and support. With this approach we can tailor the most appropriate technical solution to every problem. A high quality solution with better service and support, better for the environment and yet with greater availability and a lower total cost ownership than our competitors. All over the world in underground railways, in amusement parks and every place where people work or live you will find ABB transformers at work. ABB invites you to find the optimal solution to your application and to see with your own eyes that even our standard solutions are special.

3 Mission ABB is a global leader in power and automation technologies that enable utility and industry customers to improve performance while lowering environmental impact. Introduction to ABB ABB is the worlds leading supplier of Distribution Transformers. We offer: Introduction to Industrial IT Industrial IT is ABB's name for a powerful commitment to solutions for Real-Time Automation and Information. Industrial IT guides every step ABB takes going forward in technology, business processes, and more. All ABB Distribution Transformer products are Industrial IT certified, which guarantees structured, easy accessible and online documentation. It can be viewed on its own but also as a part of a larger system. All technologies (Dry/Liquid) All standards (IEC, ANSI, etc) Applications up to 72,5 kv Facts and figures (approx) Production facilities around the world: 30 Countries with Sales and Services centers: 140 Number of units sold yearly: Quality statement Working with us, you have access to a worldwide network of factories and facilities serving you locally with a full range of products and solutions. Our warranty provides one ABB quality and service. Working together gives you access to production facilities using Industrial IT and the most up to date technologies, providing the highest quality for standard and specialty products as well as solutions. Our production facilities are ISO 9001/14001 certified. Our aim is to deliver your distribution transformers fast, on time and conform to your specifications. ABB 3

4 Construction features Description ABB Distribution Transformers manufacture a wide range of oil and dry type transformers. This brochure describes three phase oil type distribution transformers up to 2000 kva and 36kV. They are used to step down three-phase high voltage to low voltage for power distribution, mainly in urban areas and for industrial applications. Our standard transformers are designed for use in moderate climates and can be installed both outdoors and indoors. The loading capability is designed to comply with IEC 354. Distribution transformers can be hermetically sealed (the tank is completely filled with oil) or equipped with an oil conservator. Tanks are constructed with flexible corrugated walls (fins), which enables sufficient cooling of the transformer. The corrugated walls also compensate for the changes in the oil volume during operation. An advantage of the hermetically sealed transformers is that oil is never in contact with the atmosphere thus avoiding periodic oil analysis. Our transformers are adaptable for pole mounting or assembly in substations. Standard features Hermetically sealed: Corrugated tank HV and LV DIN bushings Off-circuit tap changer Oil drain valve Oil filling plug on the cover Lifting lugs Earthing terminals Rating plate Mineral oil (inhibited or uninhibited) Overpressure valve ABB technology Common Technology (CT) Our transformers are manufactured to provide you with a high quality and reliable transformer. ABB have developed a Common Technology (CT) platform, which defines design standards, equipment and processes used in all our factories. Use of this Common Technology enables us to guarantee our customers a high quality and consistent product. The key production features of our small and medium distribution common technology are: oval core step lap automatic cutting and stacking of core legs windings directly wound on the core legs or mandrels with 2 HV coils in parallel (smallest units) epoxy diamond dotted paper insulation between LV layers tapered or full width layer insulation in HV windings What we achieved is: standardisation of products automation of production stable process and quality high reliability higher LV insulation level Additionally, for transformers with a conservator: Magnetic oil level indicator Buchholz relay Oil filling plug on the conservator Dehydrating breather Other product types with different dimensions and technical specifications can be designed and manufactured on request. 4 ABB

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6 Core The magnetic circuit is of the three-column type with mitred joints. It is manufactured with firstrate, grain oriented magnetic, cold-rolled silicon steel laminations. The mounted core is clamped down in order to reduce vibrations and minimize noise levels. Further noise level and no load losses decreasing are achieved by step lap core construction. Core design is an important factor of any transformer s efficiency. The geometric core arrangement and the materials chosen determine the losses and noise levels. Grain oriented transformer sheet steel is used in the core construction. It is cut by the most modern, fully automated core cutting machinery and assembled into limb and yoke sets. This results in high dimensional accuracy, excellent space factor, and low loss values. By using step-lap technology, the no-load currents can be reduced improving the drawbacks associated with reactive power compensation. Windings The windings are made of two components, conductor material and the insulation material. The conductors used are a high grade electrolytic copper or aluminium. They are insulated with pure cellulose or double enamel. The HV windings are wound either with round, double enamel insulated, or rectangular, paper insulated wire. The LV windings are wound with rectangular paper insulated wire, enameled wire or foil. The windings are designed to meet the customer s insulation level requirements and also to withstand the short circuit forces as outlined in IEC The neutral points of LV windings are brought up to the tank cover. 6 ABB

7 Off-circuit tap changer The tappings of the HV winding, are connected to the off-circuit tap changer located horizontally between the yoke and the tank cover. The handle is located on the cover and should only be operated when the transformer is de-energized. The design prevents setting the off-circuit tap changer to intermediate positions. The mechanism can also be padlocked during normal transformer operation. Insulating liquids The mineral oil both inhibited and uninhibited types - with its electrical and chemical characteristics is in compliance with the IEC Standards and is P.C.B. and P.C.T. free. ABB provides and promotes its own solution as well. BIOTEMP is biodegradable, vegetable-oil-based dielectric insulating fluid used in electrical transformers. The product reduces environmental threats posed by transformer insulating oil spills. On special requests other fluids are available. ABB 7

8 ...manufactured, assembled, tested and painted in the factory Tank and cover Tank walls are made of corrugated cooling surfaces. The bottom plate, side and frames are of welded construction. The welds are tested for oil tightness. All protection device flanges, bushings, tap switch drive and lifting lugs are fitted on the tank cover. The cover is bolted to the tank frame. The underbase channel is welded to the base plate and the rollers are suitable for either longitudinal or transverse movements. Single pole 3-phase transformers are delivered with flat base as standard, but optionally can be equipped with underbase channel beams where bi-directional wheels are a requirement. The complete tank is tested and approved according to CENELEC HD S1 standard. Special type lifecycle tests of more than cycles simulating over 30 years operation were carried out with positive results. Painting and surface treatment All metal parts are carefully sand-blasted. The initial protective coating is made up of a single coat of one pack epoxy paint. The final paint coating is made up of several coats of paint. Alternatively, hot dip galvanized transformers can be supplied for use in heavy corrosion areas. All units are painted in RAL 7033 but other colours are available on request. Detailed painting procedures for different environmental conditions are also available. Options and accessories Plug-in bushings on HV side Dial type thermometer with or without contacts Oil level indicator Pressure relief valve with or without contacts Multifunction protection device Cable boxes Off-circuit tap changer with 3-7 positions (9 on request) Thermometer pocket Skid base or bi-directional rollers Integrated pole brackets on tank Arcing horns Dual voltage transformers Galvanized tank 8 ABB

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10 Quality and testing Our production facilities where all ABB transformers are manufactured are certified acc to ISO 9001 and ISO At the end of the manufacturing process the transformers are individually tested in accordance with the IEC Standards. The routine tests are: Voltage ratio and phase displacement IEC Insulation resistance IEC Applied voltage test (insulation to ground) IEC Induced voltage test (winding insulation) IEC No load loss test IEC Winding resistance IEC Impedance and load loss test IEC Control wiring, auxiliary operation. Upon request, witnessed type/special tests can be carried out: Insulation lighting impulse test IEC Temperature rise test IEC Sound level test IEC Partial discharge test IEC Specially designed reinforced transformers suitable for pole mounting, protected with arcing horns are tested in accordance with to SFS 2646 steep wave execution! 10 ABB

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12 References ABB has thousands of liquid filled transformers at work all over the world in many different applications, such as utilities, windmills, compact substations and industrial transformers. ABB is different offering the best and most reliable products acc to meet the demanding requirements of all our customers. We offer our customers: Quality guaranteed by the most modern technology, equipment, processes and constantly improved in ABB R&D centres all over the world Speed the shortest delivery time within days instead of weeks Production and management processes based on the newest Industrial IT factory concept to allow control production every minute in the real time Focus Factories concept specialized factories that are focused on specific product ranges to deliver consistent quality and competitive products across the globe. 12 ABB

13 Outline drawing 1 Thermometer pocket 2 Tap-changer handler 3 Oil drain valve 4 Rating plate 5 Lifting lug 6 LV bushings 7 HV bushings 8 Filling plug 9 Roller ABB 13

14 Technical Data HV uk kva NLL LL losses L W H oil weight total weight Lwa (75 C) comb. appr. appr. appr. appr. appr. kv % W W mm mm mm kg kg db A - A' B - C' A - C' C - C' A - A' B - C' A - C' C - C' Wheelbase (D): 520mm Wheel diameter: 125mm A - A' B - C' A - C' C - C' A - A' B - C' A - C' C - C' Wheelbase (D): 520mm Wheel diameter: 125mm A - A' B - C' A - C' C - C' A - A' B - C' A - C' C - C' Wheelbase (D): 520mm Wheel diameter: 125mm A - A' B - C' A - C' C - C' A - A' B - C' A - C' C - C' Wheelbase (D): 520mm Wheel diameter: 125mm A - A' B - C' A - C' C - C' A - A' B - C' A - C' C - C' Wheelbase (D): 520mm Wheel diameter: 125mm 14 ABB

15 HV uk kva NLL LL losses L W H oil weight total weight Lwa (75 C) comb. appr. appr. appr. appr. appr. kv % W W mm mm mm kg kg db B - A' A - A' B - C' A - C' C - C' B - A' A - A' B - C' A - C' C - C' Wheelbase (D): 670mm Wheel diameter: 125mm A - A' A - C' A - A' A - C' Wheelbase (D): 670mm Wheel diameter: 125mm B - A' A - A' B - C' A - C' C - C' B - A' A - A' B - C' A - C' B - A' A - A' B - C' A - C' C - C' B - A' A - A' B - C' A - C' Wheelbase (D): 670mm Wheel diameter: 125mm B - A' A - A' B - C' A - C' B - A' A - A' B - C' A - C' Wheelbase (D): 670mm Wheel diameter: 125mm ABB 15

16 HV uk kva NLL LL losses L W H oil weight total weight Lwa (75 C) comb. appr. appr. appr. appr. appr. kv % W W mm mm mm kg kg db B - A' A - A' B - C' A - C' B - A' A - A' B - C' A - C' Wheelbase (D): 820mm Wheel diameter: 160mm B - A' A - A' B - C' A - C' B - A' A - A' B - C' A - C' Wheelbase (D): 820mm Wheel diameter: 160mm B - A' A - A' B - C' A - C' B - A' A - A' B - C' A - C' Wheelbase (D): 820mm Wheel diameter: 160mm A - A' A - C' A - A' A - C' Wheelbase (D): 820mm Wheel diameter: 160mm Above data are only examples to give an overview of possible standard transformers. Transformers can be optimized with respect to capitalised losses for optimization of Total Cost of Ownership (TCO). ABB 16

17 Distribution transformers offered by ABB Liquid filled distribution transformers: - up to 72,5 kv - single phase and three phase - ground mounted, pole mounted or pad mounted Dry transformers: - Open Wound - Vacuum Cast Coil - RESIBLOC Services offered by ABB Distribution Transformers - Environmental Services - PCB Elimination Services - Installation and Commissioning - Training - Testing and maintenance - Retrofits, Revamping and up-grading - Spare parts procurement - Technical information available from abb.com/distributiontransformers Transformers for special applications like: - Railway application - Marine: propulsion and distribution - Carrier Vessel Nuclear - Rectifier Transformers - Variable Speed Drive - Excitation Transformers - HVDC Converter - Transformers for windmills - Autotransformers - Grounding/Earthing Transformers - Neutral Earthing Reactors - Current Limiting Reactors - Arc Furnace - Boostertransformers 17 ABB

18 Leaflet Ident. no. 1LAC Printed in Germany ( COW) ABB Transformers Power Technologies Division Affolternstrasse, Zurich Switzerland Note: We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document. We reserve all rights in this document and in the subject matter and illustrations contained therein. Any reproduction in whole or in parts is forbidden without ABB s prior written consent. Copyright 2004 ABB All rights reserved.