Spreco Silentwind Technisches Handbuch

instructions for use / installation manual

SILENTWIND

Dear customer

We thank you having bought our product . You have decided on a new generation of

windgenerator. Compared to traditional windgenerators the essential advantages of

our product are safety, security, efficiency and very little noise emission. You will also

profit from our experience of more than 30 years with various windgenerators used

offshore sailing. For long distance cruising the availability of electric energy without

the possibility of grid connection is essential .

Fair winds at any time

The Spreco Team

Please note that this manual is part of the product and must be read closely. Please

study the information carefully before installing the Silentwind generator. This manual

should always be kept near the product and passed on to future owners.

This manual is addressed to the person installing the Silentwind generator. This

person should be familiar with electric wiring and the use of appropiate tools.

Otherwise the Silentwind generator should be installed by a specialist.

Contents:

1. Operation and use 4

2. Safety instructions 4

2.1. Mechanical risks 5

2.2. Electrical risks 6

2.3. Installation risks 6

3. Technical data 6

3.1. Windgenerator 6

3.1.1. Electrical data 6

3.1.2. Mechanical data 6

3.2. Charge controller 6

3.2.1 Electrical data 7

3.2.2 Mechanical data 7

3.3. Dimensions 7

3.4. Power diagram 8

4. List of enclosed parts 8

5. Operation description 9

6. Diameters of cables 9

7. Installation 9

8. Getting started 11

9. Run and stop 12

10. Charging indicator 12

11. Check ups 12

11.1. Blades 12

11.2. Screw terminals 13

11.3. Bearings / Gaskets 13

11.4. Corrosion protection 13

11.5. Mounting construction 13

11.6. Electrical system 13

12. Maintenance 13

13. Trouble shooting 14

14. Attachment / sketches 16

15. Warranty 19

16. Warranty note 21

1. Operation and use

It´s most efficient to use the regenerative electric sources of both wind and sun

combined to charge your batteries so that you can make use of daylight and wind for

24 hours. Our hybrid charge regulator is suitable for both sources. You can also

charge the batteries of an electric vehicle with this unit.

Further applications are:

Any application without grid connection, research units, traffic management systems,

emergency systems, street lamps, billboard illumination, projects in developing

countries, wireless LAN access points, holiday homes with inverters for independent

provision of electricity wherever there is no grid connection available or too

complicated to install.

The Silentwind generator is ultralight and aerodynamic so that it is possible to

connect various windgenerators in case your need for energy is high. As noise

emission is very low you can opereate the Silentwind generator in neighbourhoods

and on sailing yachts without annoying your neighbours.

Our charge regulater is suitable both for 12 and 24 volt usage and can be connected

to the Silentwind generator and solar panel.

Another advantage of the Silentwind generator ist hat it does not have any inbuilt

electronics which means that there is hardly any maintenance work on the mounted

windgenerator. The electric power is led down to the charge regulator by three

cables. The hand laminated carbon fiber blades were successfully tested in a wind

tunnel up to wind speeds of 35m/s 63 knots according to DIN EN 61400-2. Therefor

you need not worry about the Silentwind generator in any storm conditions. For

maintenance work there is an additional manual stop switch.

2. Safety instructions

Due to the high RPM and the electric energy that windgenerators generate their use

may be dangerous. Therefore carefully read the following safety instructions.

2.1. Mechanical risks

For various reasons the turning rotor system must be handled with caution. You

cannot see the end of the blades in high wind speeds so that you do not recognise

the inherent danger. Due to their aerodynamic shape the blades have very sharp

edges that may hurt you in high wind conditions. Never ever try to touch the

turning rotor system ! Never ever try to stop the turning rotor system manually.

Make sure that you install the windgenerator in a position that nobody can touch the

blades. Especially on boats ensure a sufficient height above deck.

The blades are produced from carbon fibre which is extremely solid even in high wind

speeds. Therefore keep away from the turning blades in any case. However they can

break because of ropes or other parts touching the blades in very strong winds. If

one of the blades is damaged, activate the brake function manually with the stop

switch of the charge regulator. If one of the blades is damaged, the rotor system will

be out of balance which may be a risk for the whole mounting construction. This has

to be considered before mounting the windgenerator in a safe position.

Before you install the windgenerator on a mast construction make sure that the 3-

phase wiring is disconnected from the charge regulator or fix one blade so that the

system cannot turn. You can also connect the 3 AC wires to block the system whilst

mounting. Another possibility to install the system is to screw the hub with the blades

to the shaft at the very end of the mounting procedure. The mast must be well fixed

so that it is safe in strong wind and sea conditions. Please ask a professional who is

able to assess the load that the system generates in strong wind conditions.

2.2. Elecrical risks

An idle running windgenerator can generate an AC voltage of 40 volt AC /15amp per

phase. Only connect all components if you are familiar with electric wiring. The high

voltage can cause serious injuries and fire if you do not pay attention to safety. Never

ever touch the open end of the wires. The currents on charging the batteries can

reach more than 30 A DC. The whole wiring electric components and connection

points must be able to carry a current of 40 A. Find information about suitable cable

dimensions on page 9

Warning:

Wires with insufficient diameters can cause fire.

Make sure that the wires are run so that mechanical damages cannot occur. A

damaged cable is a severe safety risk. Install a fuse to the batteries positive pole as

closel as possible to the battery. In any case a short circuit of the poles must be

avoided.

Warning:

A short circuit can cause fire and explosion. Never ever install batteries where sparks

can cause this risk. Always ensure sufficient ventilation!

The electrical installation should be carried out by persons with suitable skills who

know what they do. Before a storm the Silentwind generator should be manually

stopped with the stop switch on the charge regulator. In case of storms we

recommend to fix one rotorblade to the mast because of the risk of flying objects.

2.3. Installation risks

Only use mounting constructions that can take the load of the generator and the blast

pressure of the wind in any condition.

Working on the mounting unit should only be carried out on a calm day. Make sure

that nobody is close to the mast.

Disconnect the battery from the charge regulator when working at the system.

The turning of the blades must be avoided by fixing one blade to the mast.

3. Technical data

3.1. Windgenerator

3.1.1. Electrical data

Type of generator

Permanent magnet generator, 3 phases,

Neodymium-magnets

Rated voltage

12 VDC

Rated power

400 Watt

Rated peak power at

13,5 m/s

Start up speed

2,2 m/s

Start of charging

3 m/s

Charge indicator

Blue LED on the buttom of housing

3.1.2. Mechanical date

Safety test in wind tunnel

122 km/h without failure

Rotordiameter

1,15m

Number of blades

Weight of blades

140g/blade

Material of blades

Carbon fibre, hand laminated

RPM range

480 – 1420 RPM

weight

6,8kg (Generator)

Package dimensions

740x370x220mm weight: 9,8kg

Colour

white RAL 9010, powder coated

Warranty

36 months

3.2. Charge regulator

Charge and power management of the provided external hybrid-charge controller

Type 1: W+S 1

Maximum voltage adjustable for acid, gel and AGM batteries.

Brake mode: electronically or manually with inbuilt Stopp switch for maintenance

work (see enclosed manual)

3.2.1. Electrical data

System voltage

12/24 VDC

Max. input current windgenerator

30 A

Max. input current solar

10 A ( 100Wp)

LCD + LED displays

W, V, A, kWh, Ah, load data

3.2.2 Mechanical data

weight

1,15kg (regulator)

Package dimensions

190x120x65mm

Warranty

24 months

3.3. Dimensions

3.4. Power diagram

4. List of enclosed parts

All information is reliable. The producer does not take any resonsibility for

inaccuracies. The user of both the instructions and the product takes any

responsibility and any risk. All specifications are subject to change without notice.

5. Operation description

All windgenerators use the cinetic energy of the wind. This energy is turned into a

turning motion by the blades and thereby changed into 3 phase AC power. The

power of the energy increases in line with the wind speed exponentionally. This

means that a double wind speed generates octuple power. This must be especially

considered in storm conditions.

Our spbΩblades are produced of high-tensil carbon fibre and are hand laminated

with epoxy resin. This material provides the maximum consistency at lowest weight.

This material is also used in formula 1 and airspace industry. Therefore these CF

blades are extremely light, but resist even strongest wind conditions. They have been

successfully tested at Deutsche WindGuard – according to DIN EN 61400-2 (VDE 0

127-2) at windspeed of 122 km/h at 5480 RPM This is an equivalent of sonic velocity

at the tips of the blades. For every-day use and safety reasons we have equipped the

charge regulator with an additional electronic and manual stop switch.

6. Diameters of cables

12 Volt systems

Distance from

windgenerator to the

charge regulator in m

<11

12 –18

19 –29

30 –44

45 –68

69 –110

Cable diameter in mm2

24 Volt systems

Distance from

windgenerator to the

charge controller in m

< 11

12 –18

19 –29

30 –44

45 –70

71 –113

Cabel diameter in mm2

2.5

7. Installation

Before mounting the Silentwind generator onshore find a suitable position fort he

windgenerator. It is an ideal position if the wind flows against the blades without any

obstructions. This means that the generator is mounted as high as possible. The

height depends on the distraction of the wind by surrounding objects. You can simply

test this by fixing a 3 m long – 4cm wide plastic band at the top of a min. 4 meter

pole. You can use a 2nd band at 2 meter height. This does not apply to mounting the

generator on boats.

If the upper band flows horizontely straight or up to 30 degrees only you have found

the suitable position. In case the band shows more than 30 degrees or turns round

the mast, the position is unsuitable. This test should be carried out at moderate wind

conditions and only gives an orientation. We recommend to do various tests to get a

better assessment. You need not do this test if the windgenerator is mounted far

away from obstructions.

Note: Please note that the Silentwind generator can never be fully efficient

if it is not mounted in the prevailing wind direction or distracted by

obstructions. Therefore it is important to find a position that is not

obstructed by obstacles !

Having found the suitable position an appropriate mast with suitable equipment must

be chosen. The outer mast diameter must have 48mm and it should be inox steel or

alumine. Please also consider possible maintenance work. The mast with mounted

windgenerator should be able to take a wind blast pressure of 250Nm. Grounding of

the mast is highly recommendable. On boats you can use the central ground for mast

and engine. Ask a specialist for advice.

Once the mast is mounted you can start the relatively simple installation of the

Silentwind generator. First connect the 3 CF blades to the assembly hub (see page

17, sketch 4) with the enclosed srews (page 18, sketch 9). The enclosed nylon discs

protect against electrolytic corrosion. The fastening torque is 7-8Nm equivalent to a

weight of 7-8 kilo on a 10cm long lever arm, upright to the lever arm.

If the fastening torque is too high, this will destroy or damage the blades. If the

fastening torque is not high enough, the blades can get lose. A wrong fastening

torque is a considerable safety risk.

Regularly control the fixation of the blades !

Before fixing the blades finally move the 3 blades in a position opposite to the

running direction. The running direction is clockwise looking from the front. Then fix

the blades as described above. The blades should not be out of balane then. The

blades have been balanced statically and dynamically. In case of damage of only one

blade you can buy a single one. When ordering one blade the purchasing department

needs the exact weight of the undamaged blades.

After connecting the blades the set is fixed to the generator shaft with the enclosed

srew nut and enclosed hexagon socket srew key. After that you snap the nose cone

into place on the assembly hub. (see page 17, sketch 5,6 and 7)

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