GEMotors

SeriesE-404-Pole Synchronous Generators

10 to 40 MW6.6 - 13.8 kV 50/60 Hz

1

Experience Matters In Renewable Energy

We’ve manufactured generators for over 100 years.GE Motors has the capability to design and manufactureelectrical rotating machines for the most stringent applicationrequirements. This century of achievement has built a richtradition of technical excellence, quality and reliability.

IndustryPower Generation - Renewable Energy

ApplicationsThe Series E-40 has been specifically designed in response to thegrowing demand for renewable power generation. It incorporatesall the features to address the application and operationalconditions demanded by this industry. Series E-40 generatorsare customized for steam turbine applications in a rangeof 10-40 MW.

GE AdvantagesRugged & Compact Design. Easy Installation. Reliable Operation.

• Shipped assembled allows for safe and fast installation.

• Compact construction, small foundation and better cost.

• Self aligned spherical seat bearings are supported by a robust frame construction.

• Top or bottom totally enclosed water to air cooler (TEWAC) configurations.

• The rigid mechanical configuration (shorter distance between bearings) allows for low vibration levels.

• Follows critical industry trends for simple, modular and integrated designs.

• Durability and reliability of the traditional GE insulation system is legendary.

2

Construction

Frame

The stator frame is made of weldedsteel construction and manufacturedwith thick steel plates to preventdistortion during operation. Robustand rugged, these frames aredesigned to withstand the weight ofremovable stator core, bendingstresses and deflections. The framesare designed to minimize vibrationsand noise levels. The frame bore andbearing assembly surfaces aremachined to ensure a uniform air gapbetween the rotor and stator, therebyminimizing the unbalanced magneticpull. These frames are designed towithstand the extreme stresses dueto short circuits.

Cylindrical rotor assembly on balancemachine before insertion into the stator.

Removable core rigid stator assemblyready to be mounted in the stator frame.

3-dimensional computer generated designsare used to help produce consistent high-quality components.

Removable Core StatorThe removable core stator assemblyconsists of segmented and insulatedlaminations of cold-rolled low-losssilicon steel, clamped between sub-stantially built side plates. Followingthe punching operation the lamina-tions are de-burred (if necessary)and stacked to ensure minimal losses.Laminations of 19 mils thick with C4or C5 insulation are standard. Thecore is built inside a structural cage,which is then inserted into the frameand tightened with bolts. Steel I-beam spacers spot welded to lowcarbon steel laminations form radialventilation ducts along the corelength. When core building is com-plete, the whole assembly is clampedunder pressure with studs. After afinal dimensional check, the nuts andcompression plates are welded inplace while maintaining pressure.No weld is applied to the laminatedcore to ensure minimal core losses.

Rotor

The rotor core is made of piled lami-nations. This kind of rotor configura-tion allows an increased in airflowthrough the field winding. The shaft ismade of forged steel. The machined

shaft is inserted inside the rotor coreand fixed by interference. For ratingsup to 20 MW, air enters the rotorcore by means of holes punched onthe rotor lamination. For ratingsabove 20 MW, there are no holes inthe lamination but the shaft ismachined in such a way that thereis airflow in the core. The shaftconstruction for this case is called“fluted” or “scooped”. Two axial fansare mounted on the shaft providingsufficient airflow to maintain themachine temperature within thelimits specified according to thegenerator class (B or F Rise).

Insulation

3

Coil Insulation

The homogeneous nature of the mica compositeinsulation ensures a uniform ground insulationdielectric strength superior to mica flake tapesand wrappers.

Heavy glass tape is a protectivearmor against mechanicalshock and abrasion.

Once assembled, the coils are inserted into the statorslots and the end connections are brazed and taped.GE’s Coil Lock bracing system supports the coils andmakes the entire structure more rigid.

Special care is taken at the coillead termination during tapingto assure the filling of all voidsat this critical point.

The slot sections of coils aremolded under heat and pressureto bond the strands and turnstogether assuring dimensionalaccuracy of the finished coil.

The binding agent used is GE’s thirdgeneration epoxy resin, selectedand tested to IEEE-429 for chemicalcompatibility, thermal / dimensionalstability, and electrical properties.

A semi-conducting paint is applied tothe slot portion and graded beyondthe core to provide corona protection.

Mica composite, epoxy resin andvacuum-pressure impregnation (VPI)provide a perfect insulation system.

The advanced insulation system onall large machines will reward youwith many years of reliable opera-tion. GE’s insulation systems aredesigned to minimize the effect oflocalized electrical stress and reducethe effects of partial discharge whileincreasing machine life and reliability.Components are carefully chosenfor compatibility with the systemas a whole. The insulation systemis subjected to rigorous testingaccording to applicable IEEE, IEC andNEMA standards. All wound statorsundergo global vacuum-pressureimpregnation (VPI) treatment.This process utilizes automatedcapacitance monitoring to ensurethat each stator winding is fully

impregnated with epoxy resin.After curing, it binds the statorcomponents into a solid and rigidstructure with excellent dielectricstrength, dimensional stability, andmechanical strength. It also increasesthe resistance of the winding tothermal shock, moisture and othercontaminants. Copper

Conductor

Ground Wall Insulation

Turn Insulation

Strand Insulation

Even stator coil spacingmaintains the electrical andmechanical integrity of themachine.

Excitation

Brushless ExcitationSystemThe exciter is a three-phase AC gen-erator with a rotating three-phasebridge rectifier to give DC output.

The exciter stator core is made oflaminated, cold rolled and coldannealed steel, held together bysteel endplates.

The DC field coils are wound in aconcentric pattern using formersand inserted in the slots of thepolar pieces.

After which, the whole assemblyundergoes a complete VPI (VacuumPressure Impregnation) treatment.

The exciter rotor armature consistsof a three-phase winding system.The core consists of low-loss var-nished laminations that are stackedand held with end plates and woundwith enamel covered round copperwire. The whole assembly thenundergoes a complete VPI.

The rectifier hub includes liberallyrated diodes. The leads from thearmature are connected directly tothe hub, and the two DC output leadsfrom the hub are connected to themain field and clamped to preventmovement. The exciter armature andrectifier hub are bolted directly to aflange machined as an integral partof the shaft. The complete exciterand rectifier hub assembly isenclosed in a steel sheet cover, with aremovable plate to give access to therectifier hub on stopped conditions.

As a protection for the diode bridgeunder normal conditions,a discharge resistoris supplied inparallel with therectifier hub.

Complete brushless exciter mountedon the rotor shaft.

4

5

Bearings

The generators are designed with a water-to-aircooling system in either a top or bottom configu-ration. Air is circulated inside the machine by twointernal fans and the rotor. The radial ducts in thestator core, the design of the end windings and acareful review of the air path, ensure tempera-ture uniformity in all parts of the machine.

There are two sleeve bearings, eachmounted by a rabbit fit on a stiff end-plate. In-board air seals are providedto supplement the oil seals to preventany oil leakage into the machineenclosure.

The void between the oil seal and airseal is maintained at atmosphericpressure to eliminate the possibilityof low pressure, caused by coolingair, drawing in oil. Each bearing lineris made from steel, lined with whitemetal and is split on the horizontalcenterline.

The standard two-bearing arrange-ment allows 0.5 inch axial displace-ment. A low-pressure oil supply isrequired and is normally taken froma separate oil system.

Each bearing has a sump and usuallyan oil ring for lubrication during run-down. Oil throwers on the shaft andoil seals on the bearing housing areprovided to prevent oil leakage andcontamination.

Stub pipes are usually supplied (oneinlet and one outlet per bearing) fit-ted with an orifice plate on the oilinlet to control the oil flow rate.By arrangement these pipes can beconnected to provide a single inletand a single outlet to the machinefrom carbon or stainless steels.

Both bearing liners are insulated fromthe bearing housing. A removable linkis provided to ground the drive endbearing and to facilitate testing ofthe bearing insulation.

Proximity probes (with proximitor ortransmitters) and a key phasor areavailable options.

CoolingSystem

Permanent MagnetGenerator (PMG)PMG supplies continuous powerto the exciter through the voltageregulator to maintain up to 300%shortcircuit current from the alterna-tor during a fault condition. It pro-vides full exciter power, regardlessof the alternator voltage. It is alsoa separate voltage source for useoutside of the generator set.

Options & Accessories

6

Automatic VoltageRegulation (AVR)AVR regulates reactive power deliv-ered by the generator to the system.AVR’s regulate voltage in a “droopmode” (default) where voltagedroops from 100% to 95% set pointas load increases from 0% to 100%.This allows paralleled generators toshare reactive power. They also reg-ulate voltage in “cross-current mode”where it is held constant. AVR’s com-municate and exchange “voltageerrors“ utilizing microprocessors witha fast response time and PWM (pulsewidth modulation) power stage.These communications come in fourregulating modes with a bumplesstransfer between modes:

• AVR (automatic voltage regulation)

• PF (power factor) regulation

• VAR (reactive power) regulation

• Field Current (manual mode) regulation Voltage Soft-start Build up

Other functions of the AVR include:

• Voltage Soft-start Build up

• Prevention of generator operation during a continuous overload

• Sequence of Events Recording & Oscillography which is useful during commissioning diagnostics

Neutral GroundResistor (NGR)The NGR acts to limit generator faultcurrent to a low level when a phase-to-ground fault occurs. It also servesto protect the generator from exces-sively high magnetic stresses andtemperatures caused by high faultcurrents. The NGR is time-rated.

AVR

EXCITERARMATURE

BRUSHLESSEXCITER

SYNCHRONOUSGENERATOR

ROTORFIELD

STATORWINDINGS

CT

PT

GCBSYSTEM

BUS

NGR

1000A

EXCITERFIELD

OINTNPUT

AUTOMATIC VOLTAGE REGULATOR(DECS UNIT OR EQUIVALENT)

CT

PT

FIELDOUTPUT

PMGPOWER IN

IDC

(3A

to 1

5A)

DIODERECTIFIER

10 or 30

0 8

EXE

PERMANENT MAGNET

GENERATOREXCITER

FIELD(PERM. MAGNET)

PMGARMATURE

10 or 30

CT1 (1)NEUTRALCURRENT

13,800:120/240 V10A/10 sec

50/5A, C10HEATER

RS

Accessories

• Partial Discharge Sensor Kits

• Air RTD (Resistance Temperature Detectors)

• Space Heaters 50/60 Hz,up to 550 volts

• Large Oversized Fabricated Steel Main Terminal Box - Frame Mounted

• Fabricated Steel Neutral Terminal Box - Frame Mounted

• Surge Arrestors and/or Surge Capacitors

• Current and Potential Transformers

• Vibration monitoring equipment

• Water leakage detector

• Couplings

• Every machine is equipped with Resistance Temperature Detectors (RTD) to monitor stator winding temperature.

• Generator control andprotection panel - optional

• Medium voltage switchgear - optional

Custom conduit box complete with lightningarresters, surge capacitors and currenttransformers.

GE MotorsRod. SP101 Campinas-Monte Mor, Km 3.8

CEP 13-64-654 Campinas SP BrazilTel: 55 (19) 8122 5598 / 2102 8520

55 (11) 8224 3365

www.gemotors.com.br

8 2008 General Electric Company All Rights Reserved.GE and g are trademarks of General Electric Company.

DEA-M1050 0808

The Right ChoicePower Solutions TeamExperienced application engineers are available to solve your toughestgenerator system problems.

Installation, Start-up & Commissioning• Experienced engineers/technicians

available to support site erection, installation and commisioning.

• Long term service agreements including remote monitoring and maintenance assistance.

• Parts center support your local needs and assure your up-time requirements.

• Permanent Short Circuit TestUp to 130% of rated stator current

• No Load Saturation Test Up to 125% of rated stator volts

Testing

Test CapabilityGE Motors has world-class onsite testfacilities. Extensive experience in theperformance of rotating machinerywith all forms of fixed and variablespeed drives has been accumulated.

Each machine is tested at the factorybefore shipment for installation in thefield, thus reducing set-up time

• In-Process TestingRotor impedance; surge test; AC dielectric tests, prior VPI

• Running Tests According to International Standards:NEMA MG1/IEEE 115, IEC 60034-1 & 60034-2 or ABNT 5052

• Short Circuit Ratio (SCR) – from test data

• Mechanical Run Including vibration analyses using velometers and displacement sensors “shaft probes”; dynamic balancing and probe track run out

• Efficiency – Losses segregation method

• Insulation & Polarization Index

• Dielectric Tests In the stator, rotor and brushless

• Over Speed Test Up to 120 % of rated speed

• Lubricating System Functional Tests

Synchronous Hydro Generators Horizontal & Vertical ApplicationsPower: 2,000 – 37,500 kVA Speed: 150 – 900 RPM Voltage: 3,000 – 13,800 Volts Frequency: 50 & 60 Hz

GE Energy

2

We’ve manufactured generators for over 100 years.GE has the capability to design and manufacture electrical machines for the most stringent application requirements. This century of achievement has built a rich tradition of technical excellence, quality and reliability.

IndustryPower Generation – Hydro Energy

ApplicationThis line of synchronous generators has been specifically designed in response to the growing demand of small hydro plants. It incorporates a full range of features to address the applications and operational conditions demanded by this industry. This product line is customized for horizontal & vertical hydro turbine applications in a range of 2,000 – 37,500 kVA, 150 - 900 RPM.

GE AdvantagesRugged & compact design. Easy installation. Reliable operation.

• Shipped assembled or disassembled, based on customer request

• Compact construction with a small foundation

• The rigid mechanical configuration (shorter distance between bearings) allows for low vibration levels

• Follows critical industry trends for simple, modular and integrated designs

• Proven GE insulation system makes for a durable and reliable machine

• Modularized construction for fast and easy site installation

• Rotor designed to meet higher runaway speeds specific to hydro applications for Francis and Kaplan turbines

Experience Matters

3

Construction

Frame The stator frame is made of welded steel construction and manufactured with thick steel plates to prevent distortion during operation. Robust and rugged, these frames are designed to withstand the mass of a stator core, bending stresses and deflections. The frames are designed to minimize vibrations and noise levels. The frame bore is machined to ensure a uniform air gap between the rotor and stator, thereby minimizing the unbalanced magnetic pull. These frames are designed to withstand the extreme stresses due to short circuits.

Each machine is designed to be assembled on a robust concrete foundation or steel base. A minimum of four lifting points is provided in the generator to facilitate this process. Larger or heavier machines, which are shipped disassembled, are reassembled over the foundation at the site, as a part of the field installation process.

The frame is fabricated from structural steel plates to ensure an extremely robust and rigid support structure. The generator can be designed for open enclosure and totally enclosed water-to-air cooled. The exciter and rectifier hub are mounted at the non-drive end (NDE) enabling easy access for maintenance purposes.

Stator Core The stator core assembly consists of segmented and insulated laminations of cold-rolled low-loss silicon steel, clamped between substantial side plates. Laminations are stacked up with a controlled burr in order to ensure minimal losses. Lamination steel is selected based on project requirements. The core is built inside a structural cage, which is then inserted into the frame and attached through weldments. Steel I-beam spacers spot welded to low carbon steel laminations form radial ventilation ducts along the core length. When core building is complete, the whole assembly is clamped under pressure with studs. The nuts and compression plates are welded in place while maintaining pressure.

Laminated PolesThe rotor has laminated poles fitted with strip or wire wound field coils and supplied with an amortisseur winding on the outer pole face.

Laminated SpiderThe rotor spider is made of thin laminations, clamped with axial studs. According to design needs, there are axial holes to improve the air ventilation through the rotor. The laminated poles are attached to the spider with dovetails.

Solid SpiderThe rotor spider and shaft are obtained from a one-piece machined carbon steel forging. According to design needs, there are axial holes to improve the air ventilation through the rotor. The laminated poles are fixed on the spider by using dovetails on the pole bottom.

Rim SpiderThe rim is made of forged steel. The rim is shrunk on to a large web that is attached to the shaft by means of a hub and a key, then pole bodies are attached to the rim via a number of radial bolts.

Two axial or radial fans (according to design characteristics) are mounted on the shaft to provide airflow to maintain the machine temperature within the limits specified. The fans are used to provide double-ended ventilation, helping ensure an even temperature distribution across the field and stator windings.

RotorThree types of rotor construction can be utilized in this product line: a laminated spider with dovetailed poles, a rim spider with bolted poles, or a solid spider with dovetailed poles.

Rotor with shaft-mounted out board exciter

4

Even stator coil spacing maintains the electrical and mechanical integrity of the machine.

Insulation

Mica composite, epoxy resin and vacuum-pressure impregnation (VPI) provide a robust and reliable insulation system.

The advanced insulation system on all large machines will typically reward you with years of reliable operation. GE’s insulation system is designed to minimize the effect of localized electrical stress and reduce the effects of partial discharge while increasing machine life and reliability. Components are selected to ensure reliability of the system as a whole.

The insulation system can meet applicable standards. All wound stators undergo global vacuum-pressure impregnation (VPI) treatment. Curing binds the stator components into a solid and rigid structure with excellent dielectric strength, dimensional stability and mechanical strength. It also increases the resistance of the winding to thermal shock, moisture and other contaminants.

The binding agent used is GE’s third generation epoxy resin, selected and tested to IEEE-1776 for chemical compatibility, thermal/dimensional stability, and electrical properties.

The coil turns in the slot section are bonded using heat and pressure to achieve dimensional accuracy of the finished coil.

The mica composite insulation is designed for uniform ground insulation dielectric strength.

Above 6000 volts, a semi-conducting paint is applied to the slot portion and graded beyond the core to provide corona protection.

A protective armor of heavy glass tape is used for protection against mechanical shock and abrasion.

Copper Conductor

Ground Wall Insulation

Turn Insulation

Strand Insulation

Coil Insulation Once assembled, the coils are inserted into the stator slots and the end connections are brazed and taped. GE’s coil lock bracing system supports the coils and makes the entire structure more rigid.

5Brushless exciter complete with rectifier hub

Excitation

Brushless Excitation System The exciter is a three-phase AC generator with a rotating three-phase bridge rectifier.

The exciter stator core is made of laminated, hot rolled or cold rolled steel, held together by steel endplates.

The DC field coils are wound in a concentric pattern using formers and mounted on the frame poles.

The whole assembly undergoes a varnish treatment.The exciter rotor armature consists of a three-phase winding system. The core consists of steel laminations that are stacked and held with end plates and wound

with enamel covered round copper wire. The whole assembly then undergoes a varnish treatment.

The rectifier hub includes liberally rated diodes. The leads from the armature are connected directly to the hub, and the two DC output leads from the hub are connected to the main field and clamped to prevent movement.

The exciter armature and rectifier hub are assembled by interference onto the shaft. The complete exciter and rectifier hub assembly is enclosed in a steel sheet cover. For ease of maintenance, a removable plate gives access to the rectifier hub.

As a protection for the diode bridge under normal conditions, a varistor is supplied in parallel with the rectifier hub.

Collector Ring with Brushes The brushes are electrographite type, open terminal. The quantity of brushes is determined taking into account the current density required for an efficient working of the excitation system. The brush holders are selected in order to provide the required contact pressure between the brushes and the collector rings.

The collector rings are low carbon steel material, providing thermal conductivity required to keep the system at the temperature level according to applicable standards. There are two kinds of collector rings: smooth (standard) and grooved rings (for special cases).

6

Bearings

BearingsVertical

There is a standard arrangement for the bearings configuration: thrust and guide bearing at NDE side and only guide bearing at DE side.

NDE thrust bearing is assembled into a housing, which is bolted at the upper endshield, and the upper endshield is bolted against the stator frame.

NDE guide bearing works in contact with a thrust block, which is the piece that connects the rotor shaft to the thrust bearing surface, by means of a key connection in the shaft.

High-pressure oil lift systems are frequently supplied at NDE thrust bearing to allow easy start-up (due to the high pressure at the thrust bearing surface) and also better installation and maintenance handlings.

NDE thrust bearing is insulated from the thrust bearing housing. A removable link is provided to ground the drive end guide bearing and to facilitate testing of the thrust bearing insulation.

DE guide bearing is assembled at the lower endshield, together with its support, and it works in contact with a track built in the rotor shaft.

Lower endshield is bolted against the stator frame, and it is positioned at the inner side of the stator frame.

All the components assembled at the lower endshield (DE guide bearing, supports and covers) are split, in order to permit the assembling process (due to rotor shaft flange diameter, usually larger than DE guide bearing inner diameter). The access to those pieces is done by means of openings in the lower endshield, which is closed after the assembly process is finished.

Horizontal

There are normally two sleeve bearings, each mounted on a pedestal that is bolted to the base. Each bearing liner is made from steel, lined with white metal and is split on the horizontal centerline. The standard two-bearing arrangement (which can be varied, by agreement, to suit the type of coupling used) assumes a limited end-float coupling, and non-locating bearings are provided. (Typical end-float is ± ½ inches).

Thrust bearing can be provided on the DE or NDE side, according to requirements.

Oil throwers on the shaft and oil seals on the pedestal are provided to prevent oil leakage and contamination. High-pressure oil lift systems are frequently supplied at each bearing to allow for easy installation and maintenance.

NDE bearing liner is insulated from the bearing housing. A removable link is provided to ground the drive end bearing and to facilitate testing of the bearing insulation.

7

Cooling System

Enclosure and Ventilation The generator is designed for open enclosure (WPI, IP23/24) or totally enclosed air-to-water (TEWAC/CACW) cooling system (top or bottom cooling).

Air is circulated inside the machine by two internal fans and the rotor. The radial ducts in the stator core, the design of the end windings and a careful review of the air path, ensure temperature uniformity in all parts of the machine.

Top Mounted Cooling

Bottom Mounted Cooling

Cooling circuit for vertical generators

8

Options and Accessories

Permanent Magnet Generator (PMG)PMG supplies continuous power to the exciter through the voltage regulator in order to maintain up to 300% short circuit current from the alternator during a fault condition. It provides full exciter power, regardless of the generator voltage.

Neutral Grounding Resistor (NGR)The NGR acts to limit generator fault current to a low level when a phase-to-ground fault occurs. It also serves to protect the generator from excessively high magnetic stresses and temperatures caused by high fault currents. The NGR is time-rated.

AVR

EXCITERARMATURE

BRUSHLESSEXCITER

SYNCHRONOUSGENERATOR

ROTORFIELD

STATORWINDINGS

CT

PT

GCBSYSTEM

BUS

NGR

1000A

EXCITERFIELD

SETPOINTINPUT

AUTOMATIC VOLTAGE REGULATOR(DECS UNIT OR EQUIVALENT)

CT

PT

FIELDOUTPUT

PMGPOWER IN

IDC

(3A

to 1

5A)

DIODERECTIFIER

10 or 30

0 8

EXE

PERMANENT MAGNET

GENERATOREXCITER

FIELD(PERM. MAGNET)

PMGARMATURE

10 or 30

CT1 (1)NEUTRALCURRENT

13,800:120/240 V10A/10 sec

50/5A, C10HEATER

RS

AVR

EXCITERARMATURE

BRUSHLESSEXCITER

SYNCHRONOUSGENERATOR

ROTORFIELD

STATORWINDINGS

CT

PT

GCBSYSTEM

BUS

NGR

1000A

EXCITERFIELD

SETPOINTINPUT

AUTOMATIC VOLTAGE REGULATOR(DECS UNIT OR EQUIVALENT)

CT

PT

FIELDOUTPUT

PMGPOWER IN

IDC

(3A

to 1

5A)

DIODERECTIFIER

10 or 30

0 8

EXE

PERMANENT MAGNET

GENERATOREXCITER

FIELD(PERM. MAGNET)

PMGARMATURE

10 or 30

CT1 (1)NEUTRALCURRENT

13,800:120/240 V10A/10 sec

50/5A, C10HEATER

RS

Automatic Voltage Regulation (AVR)The AVR utilizes a fast response microprocessor to control its AC to DC converter power stage output that provides excitation to the generator to regulate the difference between the generator stator voltage reference set point and feedback signal to zero. Reactive power sharing during parallel operation of generator with other generators or a power system is achieved by the use of droop compensation where the voltage feedback signal is increased by typically 0% to 5% as lagging reactive load current increases from 0% to 100%. The following four operating control modes with a bumpless transfer between modes are available to suit the site requirements: • Sequence of events recording

& oscillography, which is useful during commissioning diagnostics

• AVR automatic voltage regulation (with switchable reactive power droop compensation for basic parallel operation)

• Generator PF power factor control (for connection to large power system)

• Generator VAR reactive power control (for connection to large power system)

• Brushless exciter field current (manual mode) regulation

Other functions of the AVR include: • Voltage soft-start build up • Minimum and maximum excitation

and stator current limiters

9

Accessories• Partial discharge sensor kits

• Bearing RTD (Resistance Temperature Detector)

• Space heater 50/60 Hz

• Large oversized fabricated steel main terminal box – frame mounted

• Fabricated steel neutral terminal box – frame mounted

• Surge Arrestors and/or Surge Capacitors

• Current and Potential Transformers

• Vibration monitoring equipment

• Water leakage detector

• Couplings

• Generator control and protection panel – optional

• Medium voltage switchgear – optional

Remote Monitoring and DiagnosticsGE’s comprehensive industrial machine monitoring strategy is designed to enhance the capabilities of industrial customers to reduce downtime and identify industrial machine failure before it happens. Elements of GE’s solution include:• Continuous technical support

through the GE Monitoring and Diagnostic (M&D) Center

• GE engineers with remote access to motor condition data can identify potential failures of industrial machines

• Advanced technology products designed to easily retrofit existing customer equipment and provide the highest levels of protection and reliability

• Installation and commissioning – prompt comprehensive service built upon GE’s years of field engineering experience, OEM product knowledge, and access to product information

Terminal box with lightning arresters, surge capacitors and current transformers

Features

GE can provide a complete motor monitoring solution:• Comprehensive motor condition

monitoring

• Text message/email alerts

• 24-hour monitoring support

• 24-hour engineering support

• Warehoused condition data

• Web-based access for customer visualization of data

• Wireless transmission of data

GE offers several options for the remote monitoring of your industrial asset. The parameters identified herein are configurable based on customer/application need. GE is committed to complete customer satisfaction and will work to ensure the monitoring package chosen will serve the customer’s individual needs.

Benefits

• Wireless network reduces installation (cabling) costs

• Predictive maintenance intervals streamline maintenance schedules based on actual operating conditions

• Reduced maintenance costs

• Increased machine productivity

• Increased operating efficiency

• Minimize risk of catastrophic damage to equipment

• Quick installation with minimal disruption to operations

• Minimal footprint - installs on any accessible DIN rail

Testing

The Right Choice

Test CapabilityGE has world-class test facilities. Extensive experience in the performance of rotating machinery with all forms of fixed and variable speed drives has been accumulated.

Each machine is tested at the factory before shipment for installation in the field, thus reducing set-up time.

Power Solutions TeamExperienced application engineers are available to solve your toughest generator system challenges.

Installation, Start-up & Commissioning• Experienced engineers/technicians available to

support site erection, installation and commissioning

• Long term service agreements including remote monitoring and maintenance assistance

• Parts center supports your local needs and helps assure your up-time requirements.

• In-Process Testing Rotor impedance, surge test; AC dielectric tests, prior to VPI

• Running Tests According to International Standards: NEMA MG1/IEEE 115, IEC 60034-1 & 60034-2 or ABNT 5052

For more information, please contact your GE sales representative.

GE Energy800 541 7191

www.gemotors.com

© 2011 General Electric Company. All rights reserved.GE and GE Monogram are trademarksof General Electric Company.

GEA18285

• Short Circuit Test Up to 130% of rated stator current

•No Load Saturation Test Up to 125% of rated stator volts

• Short Circuit Ration (SCR) From test data

•Mechanical Run Including vibration analyses using velometers; dynamic balancing

• Efficiency Segregated loss method per IEEE 115

• Insulation Resistance & Polarization Index

•Dielectric Tests In the stator, rotor and brushless exciter

• Lubrication System Functional tests