Components,Systems and Servicefor Wind Turbines.

With 4,000 employees HYDAC is one of the leadingmanufacturers of fluid technology, hydraulicsand electronics worldwide.We help our customers developwind energy systems from concept to completion.Our knowledge and application experienceis your asset.HYDAC products and solutionscan be found in thousandsof wind energy systems worldwide:Complete systems and filtrationconcepts for lubrication andhydraulics as well ascooling systems for gear drivesand generators.

Global yet local.With 40 subsidiaries,more than 500 distributorsand service centersHYDAC is a reliable partner.Worldwide.

Your reliable partnerfor wind turbines.

Solution packages.One supplier.One contact.

Wherever you need us,we're there to help youfind the best solution.

For every application,from componentsto a complete system.

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Worldwide approvals

HYDAC Head office in Sulzbach/Germany

Condition monitoring of oil cleanlinessand oil ageing in hydraulic and lubrication oilsMeasuring technologyCooling and filter systemsfor wind turbines (nacelle)Extending service life and optimisingoperational safety throughhigh-quality filtration systemsHydraulic systems and componentsfor safety and yaw brakesPitch controlIn-plant technology:Test rigs for gearboxes and other functions

We take care of:

Condition monitoringof oil cleanlinessand oil ageing in hydraulicand lubrication oilsWith optimised sensors youcan monitor the condition ofhigh-quality components inwind turbines.By monitoring the oil cleanlinessin the gearbox using automaticparticle counters, wear and tearcan be detected at an early stageand damage can be avoided.

Contamination Sensor CS 1000

MonitoringParticle counter CM WindPermanent monitoring system(particle measurement) to monitorhydraulic and lube oils (also whenaffected by air bubbles) to ISO4406:1999Online monitoring e.g.via modem or a control boxin the nacelleEarly indication of wearin the gearbox

Aqua-SensorAS 1000

HYDACLab®

ageing sensor

Pressure transmitter HDA 4000(monitoring yaw brake)

HYDAC measuringtechnologyHYDAC manufacturessensors for measuring- pressure- temperature- flow- contamination- fluid level

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Pressure switch EDS 3000(monitoring the lubrication oil)

Temperature switch ETS 3000(monitoring the cooling circuit)

Level sensor ENS 3000(monitoring oil level in gearbox)

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Cooling and filter systems (nacelle)

System advice and design(also for extreme climates to -40 °C)Gearbox lubricationGearbox coolingGenerator coolingCombined cooling of gearbox and generatorInverter cooling

Gearbox cooling:Motor pump unit with filtrationFlow rate: < 150 l/minPressure: < 14 barViscosity: < 20,000 CSt

Generator /inverter cooling:water station

Cooling system: gearbox (oil / air cooler)

Cooling of the gearbox oil is via a plate heat exchanger which issupplied by a water / glycol mixture also used to cool the generator.Heat is then dissipated via a heat exchanger.

Gearbox / generator cooling: CoolerFlow rate: < 350 l/minPressure: < 16 bar dynamicFluid: Oil or water / glycol

Integral pressure andthermally-controlledbypass valveon the cooler

Many years of expertise in transmission oil andhydraulic oil filtration in wind turbine applications.We design optimised units for:inline filtration (integral to the lube system)offline filtrationbreather filtersin accordance with AGMA 6006

Filtration

Offline Filter OLF 5/4

2-Stage-Element Betamicron®,10 µm / 50 µm filter and bypass-valve,integrated in one service-friendlycomponent

Electronic cloggingindicator Type GWfor wind turbines

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Example of oil system taken from AGMA 6006

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AccessoriesFor the completionof hydraulic systems.Mounting elementsfor componentsand lines, particularlythe cabling in the tower

Hydraulic systemsand componentsSystem advice and designPitch controlBrake functions- Safety brake- Yaw brakeYaw adjustmentNacelle hoodLocking cylinder

Brake functions, locking cylinder, nacelle hoodBrake functions, tip-brake

Lube oil unit for main bearing

Bladder accumulator as energy reserveto cater for peaks in demand

Piston accumulator for pitch adjustment (pistonposition indicator and pressure transmitter onthe gas side)

Monitoring of accumulator gas pressure

Compact power unit for brake functions Valves and blocks

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Pitch Control

Cylinder for pitch controlwith integrated position tranducer, built-on control blockwith control valve and piston accumulatorfor emergency function

Hydraulic cylinders for pitch controlHydraulic seals: sealing system with low frictionCoating: sea-water resistantEnd position damping: self adjusting

In-plant Technology:Lube oil supply for gearbox test rig and other functions

Lube oil supply for gearbox test rigTank capacity: 2,000 lPower: 2 x 11 kWFlow rate: 2 x 300 l/minOperating pressure: max. 12 barMedium: Mineral oil HLP 46, Polyglycol PG 320

Complete test rig for gearboxesWith filter pump transfer unit for filling, cleaningand filtering during test run.Process and cleanliness data is recorded and logged.All from HYDAC.

Filter pump transfer unitfor filling and cleaninggearboxes, complete withparticle counter

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HYDAC does not just manufacture components but combines these togetherexpertly to produce specific complete systems. Reliable technology, high qualitystandards and extensive testing and inspection procedures guarantee the efficiencyof HYDAC system solutions.

HYDAC China

HYDAC USA

Systems andservice – worldwide.

Assembly hall for coolers, motor pump units

As a specialist in systemsand fluid service,HYDAC SERVICENTERoffers individual concepts:from cleaning tocomplete maintenancepackages and action-plansfor system optimisation.Our aim is to increasemachine availability, reducesystem failures andto increase productivity.

Service and optimisation

Industriegebiet66280 Sulzbach/SaarGermany

Phone:+49 (0)6897/509-01

Fax:+49 (0)6897/509-577

Internet: www.hydac.comE-Mail: windenergy@hydac.com

Head OfficeHYDAC INTERNATIONAL

GMBH

Global presence.Local expertise.www.hydac.com

HYDAC Headquarters

HYDAC Companies

HYDAC Distributors and Service Partners

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