ABB Synchronous Generators

PowerIT Synchronous Generators for Diesel and Gas Engines

The global power in synchronou synchronous s generators ABB is the world’s leading leading supplier supplier of synchronous motors motors and generators, generators, with more than a century of experience in manufacturing AC machines for industrial use. Our products are designed for high reliability and efficiency, and our know-how and experience, combined with the resources of ABB’s global organization, organization, have made us the preferred supplier for many applications. We are a major supplier of brushless synchronous generators for diesel and gas engines. Our generators are in use all over the world, producing power in electric utilities and district heating plants, industrial plants, the marine and offshore sectors, and similar applications. In every case we work with our customers, using our application-specific application-sp ecific know-how to ensure that their specific needs are met.

IndustrialIT As a key element of its business strategy, ABB has committed to a broad

ABB (www.a (www.abb.com) bb.com) is a leader in power

Industrial IT

and aut om omati ati on te techn chn ol olog ogies ies th that at

program of product development and positioning under the

umbrella. This initiative is geared towards increasing integration of ABB

enable utility and industry customers to

products as the ‘building blocks’ of larger solutions, while incorporating

improve performance while lowering

functionality that will allow multiple products to interact seamlessly as

environmental impacts. The ABB Group

components of real-time automation and information systems.

of companies operates in around 100 countries and employs about 120,000

Motors, generators and drives represent fundamental building blocks in

people.

IT

the Industrial architecture.

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ABB / Synchronous Generators GB 02-2004

Generating added value ABB’s brushless synchronous generators are typically used in decentralized power plants where the prime mover is a medium or high speed four-stroke reciprocating engine. By providing extensive support to our customers – who are mostly engine manufacturers, electrical system suppliers, generator set packagers or power plant operators – we seek to generate added value for them.

We understand the importance of flexibility and on-time delivery, and we provide expertise in integrating generators with the surrounding parts of the overall power generation system. By leveraging our economies of scale and using highly standardized modular construction methods, we are able to deliver consistently high quality. We naturally work in compliance with the ISO 9001 and ISO 14001 quality and environmental standards.

Output range at different speeds ....................... 4 Modular construction .......................................... 5 Cooling and protection ........................................ 6 Windings ............................................................... 8 Insulation ............................................................ 10 Stator ................................................................... 12 Rotor ................................................................... 13 Excitation and regulation systems ................... 14 Bearings .............................................................. 16 Accessories ........................................................ 17 Final testing ........................................................ 18

Recognizing our responsibilities Environmental sustainability is of vital importance to our company, and we are committed to responding to demands for enhanced environmental solutions. In particular, our products are designed to provide high levels of efficiency over a long service life with low overall life cycle costs.


The ABB Group is also working hard in the field of corporate social responsibility – which it sees as the commitment by business to contribute to sustainable economic development, working with employees, their families, the local community and society at large to improve the quality of life.

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Performance by design Output range at different speeds

AMG 400- 630 5

4

3

560 500

2

450

1

2 00

] A V M [ t u p t u O

630

400

3 00

4 00

500

600

700

800

900

1000 1100 1200 1300 1400 1500 1600 1700 1800

1900

Synchronous Speed [rpm]

AMGe 355 to 500

AMG 710- 2500

3.5

70

2500 3.0

500

2.5

60

2000

50

] A V M [ t u p t 400 u O

2.0

1.5

40

] A V M [ t u p t u O

1600

30

1250 20

1.0

1120

900

355 0.5

10

1400 1500 1600 1700 1800

1900

2 00

710

3 00

4 00

500

600


Design standards The electrical design is based on the relevant IEC or NEMA standards and mechanical design on the relevant ISO standards. In marine or offshore applications the additional design criteria of the applicable classification society are followed. These societies include ABS, BV, CCS, CR, DNV, GL, KR, LR, NK, RINA, and RS.

Efficiency Our generators are designed for high efficiency, with losses minimized through the effective use of materials, state-of-the-art insulation and optimization of rotors, stators and fan designs. This benefits users like power plant operators as high efficiency helps to save money, cuts operating costs and means more electricity for the same investment.

Vibration tolerance Generators coupled to reciprocating engines are always exposed to engine induced vibration, especially when the generator and engine are built on a common base frame. We use sophisticated design tools to analyze the impacts of external torsional and linear vibrations on the generator. This work is 4

700

800

900

1000 1100 1200 1300 1400 1500 1600 1700 1800

1900


based on information from engine or generator set builders about the natural frequencies or global vibration modes – like base frame horizontal and vertical bending or torsion along the longitudinal axis – to help ensure troublefree operation. The generators withstand linear vibration up to the limits specified in the relevant ISO standard (typically 10 - 20 mm/s), which significantly exceeds the vibration originating from the generator itself (max 2.8 mm/s during final testing).

Recommended protections The generators are built to withstand abnormal situations such as unbalanced load, overcurrent or overload in accordance with the relevant IEC or NEMA standards. However, in order to avoid damage to the generator in situations where the permissible values are exceeded, the following protections are recommended: 

Thermal overload in stator winding



Network short-circuit



Stator interwinding short-circuit



Stator earth fault



Overvoltage



Unbalance load or shorted turns in same phase



Underexcitation or loss of synchronism



Undervoltage and intermittent loss of voltage



Monitoring of temperature detectors


Modular construction

ABB's R&D engineers work closely with engine manufacturers, using FEM and dynamic animation techniques to determine various vibration models, test critical parts and verify that hazardous mechanical resonances do not occur in the generator.

Modular design combined with a high degree of standardization means shorter manufacturing times. This benefits customers in terms of faster lead times.

Mounting All our synchronous generators are designed for horizontal mounting. They are supplied as integral units, even up to the highest sizes and outputs. They therefore require no further assembly on site, which means that installation times are substantially reduced. The most common mounting arrangements are: IM code

Description

IM1001 - two end-shield bearings, cylindrical shaft end, feet down IM1101 - two end-shield bearings, cylindrical shaft end, raised feet IM1205 - one end-shield bearing, flanged shaft end, feet down IM1305 - one end-shield bearing, flanged shaft end, raised feet IM2001 - two end-shield bearings, cylindrical shaft, flange at D-end IM7201 - two pedestal bearings, cylindrical shaft end, feet down IM7301 - two pedestal bearings, cylindrical shaft end, raised feet


Frame construction The smaller generators feature a three part modular frame consisting of the stator housing and two end housings. The end housings are precision machined and finally bolted or welded to the stator housing, ensuring perfect alignment and sufficient rigidity to withstand engine induced vibrations. End-shield type bearings are mounted on the end housings. The larger generators are built in a self-supporting full frame and equipped with integral pedestal bearings.

Corrosion protection Our generators are designed and built to withstand the applicable environmental conditions. Screws, washers, all surfaces made of steel, aluminum alloy, cast iron and all insulation materials are treated in accordance with the chosen paint system. Selection of a suitable paint system gives reliable anti-corrosion protection even under the most severe environmental conditions. For moderate indoor conditions the standard finish is a two-pack epoxy paint that is moisture-proof in accordance with the relevant standards. Solvent free paints are used wherever possible in order to minimize environmental impacts.

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Cooling and protection There are three commonly used cooling arrangements: open air, air-to-water and air-to-air.

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An open air cooled generator (IC0A1)

A totally enclosed generator (IP 54) using an

with drip proof protection (IP23).

air-to-water heat exchanger (IC8A1W7).

Open air cooling

Air-to-water closed circuit cooling

Open air cooling can be used where the air in the immediate environment is relatively clean and there is adequate air circulation. The cooling air is typically drawn in through air filters, passed through the active parts of the generator, and then exhausted back to the environment. If the engine room ventilation system cannot compensate for the temperature gradient caused by the hot air, the generator air outlet can also be ducted to allow the air to be exhausted outdoors. Open air cooling is the most typical solution for stationary indoor power plants.

The cooling air circulates in a closed circuit through the active parts of the generator and then through an air-to-water heat exchanger. This configuration passes hardly any heat to the surrounding environment, and represents an ideal solution for situations where closed circuit cooling is required due to installation outdoors, installation in a hazardous area, or whenever the quality of the surrounding air is not otherwise suitable for direct cooling. It is also ideal for installations in engine rooms with limited ventilation, such as ships.


Protection The enclosures feature protection in classes IP21, IP22, IP23, (drip proof), or IP44, IP54, IP55 and IP56 (totally enclosed), or equivalent NEMA protection classes. Generators are also available for hazardous areas in accordance with IEC/ATEX or NEC definitions.

A totally enclosed generator (IP 54) using an air-to-air heat exchanger (IC6A1A1).

Air-to-air closed circuit cooling The cooling air circulates in a closed circuit through the active parts of the generator and through an air-to-air heat exchanger. This solution is generally used in situations where a closed circuit cooling system – such as air-to-water cooling – is required but water is not readily available. This cooling arrangement requires an additional shaft mounted or electric fan to ensure sufficient air flow through the cooler.


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Windings

Form wound coils are used for medium or high voltage stators. High voltage coils include a semiconducting layer to decrease the electrical field at the slot surface.

Stator winding and insulation classes Low voltage windings up to 690 V are made of random wound enameled copper wire. All materials used including the vacuum pressure impregnation resin exceed thermal class H (180 C) requirements. Class H temperature rise is standard, with Class F or B rise also available. °

Medium and high voltage windings up to 15 000 V are made of form wound rectangular copper wire insulated with multiple layers of glass-fiber reinforced mica-tape. A variable

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number of layers of insulating tape can be applied to the copper coil depending on the dielectric barrier defined by the voltage output. All materials used including the vacuum pressure impregnation resin exceed thermal class F (155 C) requirements. Class F temperature rise is standard, with Class B rise also available. After insertion into the corresponding slots, the coils are firmly held in place by means of soft wedges and surge ropes at the coil heads prior to vacuum pressure impregnation. The completed process assures long and trouble free service. °


The automated manufacturing process uses ABB robots and is located in an environmentally controlled area, ensuring that each medium or high voltage coil is produced with uniform and consistent quality for the highest reliability.

Rotor and exciter windings Rotor and exciter windings are made to match the insulation class of the stator. This ensures high reliability and a long service life even with asymmetric loads and exceptional conditions. The rotor windings are made of pre-formed enameled rectangular copper wire. Proper supports between adjacent windings


are used to ensure stability up to the rated overspeed. The windings are vacuum pressure impregnated. Exciter windings are made of enamelled copper wire. Proper glass fiber supports are used in the exciter rotor to ensure stability up to the rated overspeed. The windings are also vacuum pressure impregnated.

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Insulation

MCI insulation system ABB uses the MICADUR ® Compact Industry (MCI) insulation system, which is based on the vacuum pressure impregnation (VPI) method. The vacuum pressure impregnation and curing of the completely wound and connected stator winding with a specially formulated epoxy resin ensures a sealed and homogenous insulation system, resulting in low dielectric strength, excellent heat transfer and elimination of hazardous internal partial discharges. ABB has been using the MCI system for more than 25 years. In that time it has been used on tens of thousands of our larger machines, which are operating successfully all over the world. No primary insulation failures due to thermal ageing have been experienced. Thermal lifetime tests performed on the MCI system also show that its endurance substantially exceeds IEC and IEEE requirements. MCI insulated windings require very little maintenance. Usually it is sufficient to ensure that the cooling ability of the winding is not reduced by the ingress of moisture or dirt during periods when the generator is not operating.

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Surge withstand level (kV-peak)

70 60 50 40 30 20 10 0 0

2

4

6

8

10

12

14

Rated voltage Un (kV)

The VPI process features:

High vacuum cycle – removing air and moisture from the voids and pores of the insulation.  Highly stable epoxy resin – ensuring superior protection under the most difficult environmental conditions (against lubricants, diesel oil, moisture, common solvents, chemically aggressive gases, abrasive dust, tropical climate etc.).  High pressure cycle – forcing the resin into even the smallest pores.  Oven curing - after the VPI process has been completed, stators and rotors are cured in an oven at high temperature. This produces very strong and stable insulation, exhibiting high mechanical and electrical strength. This is especially important in order to resist inadvertent high stresses from out-of-phase synchronization, transients and short circuits. 

Even the largest wound stators and rotors are impregnated as complete units. This ensures that both the insulation and the mechanical properties of the windings are excellent – which means that they can withstand prime mover induced vibrations and the mechanical stresses caused by transients such as short circuits.


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Stator The stator frame forms a rigid steel structure that has been designed to withstand vibrations induced by the prime mover.

Frames up to size 1120 are of modular type. The stator core is welded into a cylinder, after which the end-modules with feet are welded or bolted to the stator core. The bearings are flange-mounted on the end-shields. For larger generators, full frames incorporating both the stator core housing and feet, are used. The bearings are mounted on pedestals integrated

with the frame, allowing installation of the generator as a fully assembled single unit. The stator core itself is built of stacked, high-grade, low-loss laminated electric sheet steel, insulated on both sides with a heat-resistant inorganic coating. Radial cooling ducts ensure uniform and effective cooling of the stator.

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Rotor The characteristics of the rotor play a crucial part in achieving the best possible levels of electrical and mechanical performance. As a result, ABB continues its development work to optimize rotor designs.

State-of-the-art rotor technology provides higher efficiency and improved reliability.

Shaft The rotor comprises a shaft, a hub for larger machines, and salient poles. The shaft is manufactured of forged or rolled steel and machined to exact specifications. Rotors for frame sizes 1250 and greater are normally equipped with a separate hub which is shrink-fitted onto the shaft. The shaft ends are normally cylindrical or flanged.

Poles The poles are normally manufactured from 2 mm laminated steel sheet. The sheets are pressed together with inserted steel bars which are welded to the end plates. The pole structure is integrated or the poles ABB / Synchronous Generators GB 02-2004

are secured to the shaft or hub by bolts from above or below, or by means of dovetails. The poles are fitted with a copper or brass damper winding. All rotor assemblies are vacuum pressure impregnated (VPI) as complete units for excellent insulation and mechanical strength. After impregnation, the complete rotor assembly is dynamically balanced on two planes. 13

Excitation and regulation systems All ABB synchronous generators have brushless excitation controlled by state-of-the-art automatic voltage regulators. The generators are self-excited, and do not require any external source of excitation power.

Terminal Boxes The integrated terminal box is located on top as standard and can be designed to allow cable entry from either the right or left side. For models up to AMG1120 the standard method of cable entry is from below, for AMG1250 or larger, from the side. Optionally, separate terminal boxes mounted on the side of the generator are available, featuring busbars outside the generator frame and allowing connections from any specified direction. For auxiliary and instrument cables separate auxiliary terminal boxes may be supplied as required.

Typical main components: 1. Brushless exciter

Rotor with three phase armature winding and rotating full-wave diode bridge rectifier feeding main rotor field windings with DC current  Stator with DC winding. The current to the stator is supplied by AVR  Complete exciter is mounted inside generator frame with easy access through removable inspection covers. 

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(AVR) Both analog and digital AVRs are available, type used depending on level of performance and variety of functions required. AVR is either mounted directly inside generator terminal box (small generators) or supplied on a mounting plate designed for installation inside generating set control panel (large generators). Typical features of AVRs (depending on type of AVR selected):  Voltage regulation in island mode with droop-type reactive load sharing 2. Automatic voltage regulator


Analog and digital AVRs are available for a perfect match with the application requirements. Installation on mounting plates or inside generator terminal box.

Power factor control in parallel operation with grid  Excitation for sustained short circuit  Soft start  Over-voltage protection  Underfrequency protection  Under/over-excitation protection  Voltage matching  Rotating diode condition monitoring  Field winding thermal overload protection  Back-up arrangements with either manual control or redundant double AVRs with automatic or manual change-over 


3. Excitation power source

Voltage transformer, and current transformers for excitation in short-circuit conditions, or  Auxiliary winding in stator, or  PMG (permanent magnet generator) mounted outboard of the NDE bearing 

4. Current transformer for actual value measurement 

Used for reactive load control in either droop or power factor control modes

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Bearings The choice of bearing arrangement and type is based on factors such as load carrying capacity, speed of rotation, type of prime mover coupling, and client choice. Operating conditions such as ambient temperature, air cleanliness, vibrations, shock and inclination (marine and offshore platforms) affecting the bearing are also taken into account.

Flange sleeve bearings (standard for AMG 710-1120, optional for AMG400 to 630) Sleeve bearings are flange-mounted on the end-shield. Sleeve bearings withstand a high level of vibration. They offer excellent quality and performance, as well as first-class reliability when driven by engines: 

Antifriction bearings (standard for AMG 400-630) The bearing assembly is of the deep-groove ball type. The DE bearing is blocked while the NDE bearing is directly prestressed on the shaft.

housing, the bearing assembly is highly suitable for static as well as radial and axial dynamic loads. 

A grease nipple is provided to ease periodical changing of the grease in the bearing assembly. Excess grease is ejected into a container that is easily accessible for cleaning. NDE bearings are insulated to prevent shaft current circulation.

Excellent heat transfer through the contact surface of the shells makes them especially suitable for high speed applications.



Under normal operating conditions (lubrication, alignment, vibration, temperature and environment) and without undue external load, the bearings are designed for a life expectancy in excess of 50 000 hours.

Because the bearing shells are seated in the

They are of the split type and easy to maintain.

Provided that the operating conditions are carefully followed, their life expectancy is practically infinite. To prevent bearing damage from circulating currents, all NDE bearing housings are electrically insulated by means of non conducting PTFE film. The bearings are typically self-lubricated by oil ring. The lubricating oil is picked up by the oil ring and transferred directly to the shaft. In the case of high ambient temperature or

Accessories We offer a large selection of accessories to meet our customers’ requirements. Certain accessories are included as standard, depending on the size and type of generator. For nonlisted accessories, please contact us.

Measuring and monitoring Pt-100 resistance temperature detectors in stator slots  Pt-100 resistance temperature detectors in stator core or teeth  Pt-100 resistance temperature detectors in bearings  Pt-100 resistance temperature detectors for hot or cooled air  Thermometers for cooling circuit or bearings for local or remote monitoring  Leakage detectors for water cooled generators  Vibration probes for sleeve bearings  SPM nipples for antifriction bearings 

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Protection  Air

filters at air inlet, standard or SOLAS  Anti-condensation heaters  Differential protection current transformers  Earth fault voltage transformers  Surge arrestors  Surge capacitors  Slip rings for rotor earth fault protection  Diode failure monitoring unit  Ex accessories for hazardous areas  Bearing insulation

Excitation and Voltage Control  Analog

voltage/power factor regulators Digital voltage/power factor regulators  Manual back up regulators with manual or automatic switchover  Automatic back up regulators with manual or automatic switchover  Regulator installed on mounting plate or in free standing cubicle 



Permanent magnet pilot exciters (PMG)


inclined operating position (marine applications) an external cooling circuit for the oil may be necessary, unless the oil comes direct from the engine cooled lube oil system.

Flange mounted sleeve bearing

Integral pedestal sleeve bearings (standard for AMG1250-2500) These bearings have the same fundamental features as flange sleeve bearings, except that they are mounted on a pedestal that is integrated into the stator frame. Generators with integral pedestal bearings are as easy to mount and align as generators with flange mounted bearings. The generators are delivered ready assembled and require no further assembly on site.

Integral pedestal sleeve bearing

The air gap between the stator and rotor is also factory set and does not need any further adjustment during coupling with the prime mover. The bearings are lubricated by oil ring. An external cooling circuit for the oil is typically necessary, unless the oil comes directly from the engine cooled lube oil system.

Terminals

Cooling

Mounting

Integrated air insulated connection box  Separate air insulated terminal box  Separate phase insulated terminal boxes  Separate phase segregated terminal boxes  Termination kits for phase segregated terminal boxes  Cable glands  MCT Cable  Auxiliary terminal boxes



CuCu, CuNi or stainless steel, single or double tube, fresh or sea water heat exchangers for air-towater closed circuit cooling  Aluminum or stainless steel airto-air heat exchangers with shaft mounted secondary fans or electric fans for air-to-air closed circuit cooling





Hold down bolts  Locking pins  Jacking screws  Shims  Sole plates  Anchor bolts  Separate steel frames  SAE flange

Handling Shaft end modifications Flanged (for single bearing machines)  Cylindrical  Conical 

Lubrication systems 

External lube oil cooling and circulation units



Jack-up pumps


Hazardous area modifications Overall design for EEx nA/Ex n; EEx e/Ex e; EEx p/Ex p (all ATEX certified), or CI1 Div2 requirements  Purging and pressurization systems  Main or auxiliary terminal boxes to match hazardous area requirements 

Lifting beams  Shaft extensions for rotor removal  Seaworthy packing  Impregnated seaworthy packing  Tarpaulin packing 

Documentation Local language documentation  CD ROMs or printed 

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Final testing

Numerous tests are performed on the generator components as they progress from one manufacturing stage to the next. These tests include quality monitoring, inspections and insulation reliability evaluations. A set of final tests is performed once all the parts and components have been integrated, in order to verify that the generator meets or exceeds the customer’s requirements. All tests are performed according to IEC-34 unless otherwise specified. Testing to NEMA MG 1, IEEE-115 or marine classification society requirements is available upon request.

Routine tests

Type tests and additional tests

The routine test program is performed

Type tests are performed in addition

on every generator and is included in the price of the generator.

to the routine tests. They are normally

Visual inspection  Air gap measurement and sleeve bearing clearance check (larger generators)  Insulation resistance measurement before dielectric test Winding resistance measurement   Checking of temperature detectors and space heaters  Terminal markings and direction of rotation  Axial play for unlocked bearings  Bearing run  Vibration measurement  No load point  Short circuit point  Testing of the automatic voltage regulator  Overspeed test  Auxiliary check  Insulation resistance measurement  Dielectric tests  Insulation resistance measurement 

after dielectric test

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performed on one machine in a series of generators not previously manufactured, or at the request of the customer. Some tests may incur an additional cost. No-load curve  Short circuit curve  Heat run test (temperature rise test)  Losses and efficiency  Transient and subtransient reactance measurement  Voltage wave form analysis 

Special tests Special tests may be performed to verify the performance in special conditions. They may, for example, be based on customer specifications or classification society requirements. Such tests may include: 

Determination of reactances and time constants



Measurement of shaft voltage



Voltage wave form measurement



Sound level measurement.


A reliable partner Customer focus is an integral part of ABB’s internal processes. It starts from the very first contact, extends through manufacturing and delivery and continues with after sales service available around the world.

Application Engineering In addition to its standard product range, ABB is also a leading supplier of customized generators. Our engineering department can design generators that meet the customer’s requirements in every respect. This flexibility has made us a recognized leader in supplying tailored solutions.

Documentation Every generator is supplied complete with all necessary operating and maintenance manuals. This documentation should be studied prior to installation and operation. The machine should be inspected and maintained on a regular basis in order to ensure continuous and reliable operation.

facilities to download documentation relating to their generator, monitor the progress of their unit through manufacturing, and even witness tests on-line.

After Sales Services ABB has built a global presence through its worldwide organization and network of c arefully selected partners. As a result customers almost anywhere in the world can easily contact our manufacturing, engineering, marketing and service support. This global reach is especially important for customers in the marine sector with generators installed onboard ships. We aim to provide active support to all our customers at every stage of the project and beyond.

Online tools ABB uses the Internet to provide information and communicate with its customers. Extensive information about the entire range of synchronous generators is available at www.abb.com/motors&drives An advanced online Project Management Tool – eSolutions – presently available for larger generators, provides customers with a number of functions, including


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Reliable and efficient power. Worldwide

▲

AMG 400 generator for

a marine application in Norway, Caterpillar engine.

▲


a power plant application in Angola, MAN B&W engine.

▲

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▼


oil&gas application in Algeria,

marine application in Norway,

Caterpillar engine.

Mitsubishi engine.


▲


a power plant in Sudan, Rolls-Royce engine. Photo courtesy of MAN B&W

▲


▼

AMG 1600 generators in a

a power plant in Iraq,

power plant in Grand Cayman,

MAN B&W engine.

MAN B&W engines.

▼

AMG 900 generators in

a power plant in USA, Wärtsilä engines.


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Motors and generators for every application ABB produces one of the world’s most comprehensive ranges of motors and generators. These high quality units are supplied to manufacturers of series built machines and users of highly specialized and demanding industrial applications.

From 0.055 kW to 60 MW – a comprehensive range of motors and generators for all industrial applications.

Our range runs from a 0.055 kW standard motor to a 70 MW generator, encompassing low and high voltage, induction and synchronous, and AC and DC motors and generators. ABB motors and generators are designed for all industrial applications, and a complete range of options and auxiliary equipment is available.

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Our products meet all widely used standards and are approved for use in hazardous areas. Protection classes include flameproof, nonsparking, increased safety, dust ignition protection and pressurized. ABB is at the forefront of innovation , development and new applications.


ABB on the Internet We provide extensive information about our range of synchronous generators on the Internet. Visit our website at www.abb.com/motors&drives


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. d n la in F ni d te ni r P . 4 0 0 22 0 , y O s ic h p ar G a s a a W / A M IL W

ABB Oy Electrical Machines P.O.Box 186 FI-00381 Helsinki Finland Tel. +358 (0 )10 2211 Fax +358 (0)10 22 22675

ABB Automation SAS Rue du Général de Gaulle Champagne sur Seine FR-77811 Moret-sur-Loing France Tel. +33 (0) 1 6074 6500 Fax +33 (0)1 6074 6565

http://www.abb.com/motors&drives

S/ U B er u h c or B

4 0 0 2 2 0 B G sr ot ra e n e G s u o n or h c n y

ABB Synchronous Generators

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