Ampair Turbines Ltd

Ampair AWT20 20kW Wind Turbine

The Ampair 20kW is the largest model in our range and has become the market leader in its size.

Impressive energy production

Robust engineering

Simple, elegant design

Configurations for on-grid or off-grid use

MCS WT0118/01Small Wind Turbines

The Ampair 20kW

Annual Energy Production (AEP)

Our 20kW turbine, the largest of the Ampair range, combines practical and robust engineering with a sleek look. The turbine itself is a three blade, up-wind machine with a blade pitch mechanism, auto furl and a dump load to manage power production and protect the turbine in extreme weather. Other design considerations include a direct drive generator to minimise the number of moving parts and high specification components to ensure longevity.

The Ampair 20kW has been independently tested under the UK’s Microgeneration Certification Scheme (MCS) and emerges as a high yielding machine. The graph below depicts the annual energy production (AEP) in relation to the annual average wind speed at the turbine head.

performance

(Chart data drawn from MCS summary report)

Reference Annual Energy (RAE): 28,095 kWh

‘As energy prices continue to rise well above the rate of inflation, the cost savings potential of a small wind turbine becomes ever more valuable’

Low Wind Start-Up. High Wind Protection.

David Sharman - Managing Director

Noise Profile

The Ampair 20kW has the following noise profile:

• 45dB(A) at 100m*

• 40dB(A) at 178m*

• Noise Slope: 1.47 dB/m/s (change in sound levels per m/s change in wind speed)*

*Data from MCS Summary Reports, sound power levels at the turbine hub as measured in an 8m/s wind.

The Ampair 20kW has a cut in speed of 2.7m/s. Easy start-up is achieved by the pitch mechanism, which automatically pitches the blades at the optimum level to be driven by the wind.

This same pitch mechanism then operates as a safety feature in high winds, protecting the turbine from over production or over-speeding.

As wind speed increases to excess levels, the blades will begin to pitch out of the wind slightly, reducing their efficiency and slowing the rotor to maintain the power production at the rated power. This will not only ensure a long product lifespan but when accompanied with other protection features such as dump loading & auto-furling, guarantees safe and lasting power generation.

Turbine Profile

• 3 bladed rotor, 10.2m diameter

• Permanent magnet generator

• Direct drive

• Upwind orientation, passive yaw

• Power management: passive blade pitch, auto furl mechanism and dump load with electro-magnetic brake

• 840kg turbine head weight

• Suitable for 240V grid tie or stand alone

• 2.7 m/s cut in wind speed

design

Rotor The rotor has a swept area of 81.67m2.

A passive pitching mechanism adjusts

blade orientation to regulate rotor

speed in response to wind conditions.

The pitching mechanism ensures the

blades remain in balance during the

process.

Blades

Made from a carbon/glass fibre compos-

ite, the rotor blades are recognised as one

of the strongest and most durable type

available.

Paint OptionsChoose your colours. We offer

light grey, gloss white, off white

and light green. Blade sets can

also receive a gloss black finish. If

you want something extra we will

do our best to provide.

Nacelle

Bearings

Magnets

Seals

We use some of the worlds strongest Rare Earth

Magnets (Ne-Feb-Br) available; maximising power production capability.

Throughout the machine we

use high quality seals to

protect our bearings and

other components. The

generator itself is completely

sealed from the natural

environment, giving a long

trouble free turbine life span

even in the harshest

conditions.

We only use the highest quality branded bear-

ings. The bearings have been selected to last the

machine lifespan.

Yaw The turbine is mounted on bearings

allowing it to yaw freely in combination

with the tail rudder.

CoatingsAll main structural components are hot-dip galvanised or interzinc primed

for enhanced corrosion protection.

We are one of the few manufacturers who use

galvanised steel nacelles. This design means the

nacelle is extremely robust.

RudderIn normal wind conditions the rudder turns the turbine to face

into the wind. However as the tail boom is mounted slightly

off centre in high winds the rudder enables the furling action

which prevents over-speeding.

Ampair Turbines Ltd.

3 Carmavy Road, Crumlin, Northern Ireland, BT29 4TF

Tel: +44 (0) 28 9445 2437 Email: sales@ampair.com

www.ampair.com

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