Gianluca StanicTechnical DirectorMarelli Motori

Italy

The Generator Experience:Innovative Solutions for Sustainable

Hydropower Plants

MARELLI MOTORI S.p.A.

• The largest Italian electric machines manufacturer• Over 100 years of experience: continuous

innovation based on solid tradition• Core business consists of design and

manufacturing of small to medium size electric rotating machines for industrial, marine, oil and gas, hydro electric applications

• HQ in Arzignano, Vicenza (Italy)• World Wide Presence (South

Africa, Asia, USA, UK, Germany)

MARELLI MOTORI S.p.A. Headquarter and Shop…

Layout:

Total Area: 160.000 m²

Total covered Area: 53.000 m²

comprising of:

• Shopfloor: 43.000 m²

• Offices: 3.300 m²

• Other: 6.700 m²

Arzignano, VICENZA, Italy

…and Our Base in South Africa

Marelli Electrical Machines South Africa (Pty) Ltd JOHANNESBURG - South Africa

Hydropower: an Opportunity for Africa

World Europe Africa

Installed Power [GW]4720.3

(100%)

1283.6

(27.2%)

126.6

(2.7%)

Hydropower [GW]957.5

(100%)

267.8

(28%)

22.9

(2.4%)

Energy Consumption per capita [kWh/person]2510

(yearly)

4844

(yearly)

533

(yearly)

Source: ENERDATA, 31st December 2008

Hydropower could be a precious opportunity to

increase the life quality in Africa

MM is Familiar with Water Turbines…

PELTON

FRANCIS

KAPLANTURGO

OSSBERGER

More than 550 plants powered by Marelli Motori

Worldwide

…with a Specific Product Line…

Hydro Generators:• Synchronous and Induction Generators - Verticaland Horizontal• From 2 to 22 poles• From 10 kW to 8 MVA• From 220 V to 15 kV

To cover the Mini-Micro Hydro Power Requirements

.. as a Part of a Power Plant

HORIZONTAL FRANCIS

VERTICAL PELTON

HORIZONTAL PELTON

Vertical GeneratorTechnical Features

AIR TO WATER

EXCHANGER (low noise)

SLEEVEBEARINGS TO CARRY

HYDRAULIC THRUSTS

ROTOR FIELD RINGS

Smart Monitoring (vibrations, temps, etc.)

Horizontal GeneratorTechnical Features

H.V. TERMINAL

BOX

PMG (fast transient

response)

Special Design Technical Features

FLYWHEEL(increased inertia

time constant)SLEEVE

BEARING

SPECIALSHAFT

Hydropower – Testing Capabilities

Full testing capabilities for both horizontal and vertical generators:

380V - 15kV, up to 100Hz & 10MVA

• Routine Tests• Noise• Vibrations• Impact Tests• System Test• Transient

PerformanceVerifications

FULL LOAD TEST (vertical)

Horizontal Pelton

AIR TO WATER EXCHANGER

SLEEVE BEARINGS

Horizontal Francis + Flywheel

FLYWHEEL

A/W EXCHANGER

SLEEVE BEARINGS

Vertical Kaplan Turbine

COUPLING WITH GEARBOX ANTI FRICTION BEARINGS

DIRECT COUPLINGSLEEVE BEARINGS

BLADE

REGULATOR

Horizontal Francis

Arsiero - ItalyArsiero - Italy

Horizontal and Vertical Francis

Vertical Francis

Horizontal Pelton

Horizontal Francis

Vertical Pelton + Horizontal Francis

GENERATOR WITH FRANCIS TURBINE AND FLYWHEEL

VERTICAL GENERATOR

WITH PELTON TURBINE

Parallel Units

Horizontal Kaplan - Gearless

EMERGENCY DOOR

AUXILIARY FAN

Other Plants

Eupen - BelgiumEupen - Belgium

Serie: MJT 500 SA 6 - Power: 700 kVA - Speed: 1000 rpm - Voltage: 400VSerie: MJT 500 SA 6 - Power: 700 kVA - Speed: 1000 rpm - Voltage: 400V

Serie: MJT 400 SA 6 - Power: 270 kVASpeed: 1000 rpm - Voltage: 400 VSerie: MJT 400 SA 6 - Power: 270 kVASpeed: 1000 rpm - Voltage: 400 V

Serie: MJT 315 SB 4 - Power: 250 kVASpeed: 1500 rpm - Voltage: 400 VSerie: MJT 315 SB 4 - Power: 250 kVASpeed: 1500 rpm - Voltage: 400 V

Other Plants

Global Presence - After Sales

Hydro applications require an efficient After Sales Service Assistance

Eco Friendly Policy

Environment preservation is vital for generations to come: Marelli Motori adopt specific procedures to assure eco friendly products

• Ecologic Lubricants• Special Constructions reduce the noise level

• Recyclable Materials

Sustainable Energy to Improve Life Quality

MJT 200 MB 4400 V, 50 Hz

60 kVA

Kiremba, BURUNDI

HPA 2010

Thank You