Wind turbine

[0151]

been asked to quote for connection of a 10kw single phase. its a hong kong effort and has a 2 core 10mm 30mtr long flex coming from it. my question to you is doest the column require earthing and would a 10mm be ok and would i take it to the MET.

I personallt think it does but not that up to date on DC and if for some bizzare reason it may effect the unit.

my 2nd question is although the flex is a tough rubber the customer is going to bury it but should it be enclosed in ducting for mechanical protection?

thanks

carl

 

[binky]

Not sure about the first bit, but buried cables should definetly be mechanically protected or SWA

 

[Riggy]

Carl,

I'd bond the column as extraneous.

I'd definitely run the cable in a duct.

What voltage dc is this thing operating at?

 

[ProDave]

How much did the turbine cost?

Are you installing it mechanically? or just connecting it.

I would earth the column with an earth rod, not from MET, particularly if it's a PME installation.

What sort of controls does it have at the house end?

 

[NozSpark]

How much did the turbine cost?Are you installing it mechanically? or just connecting it.

I would earth the column with an earth rod, not from MET, particularly if it's a PME installation.

What sort of controls does it have at the house end?

What's the point of that,,, wouldn't the column base be burried in the ground???

 

[BS3036]

Probably bolted to concrete base.

 

[SPECIAL LOCATION]

been asked to quote for connection of a 10kw single phase. its a hong kong effort and has a 2 core 10mm 30mtr long flex coming from it. my question to you is doest the column require earthing and would a 10mm be ok and would i take it to the MET.I personallt think it does but not that up to date on DC and if for some bizzare reason it may effect the unit.

my 2nd question is although the flex is a tough rubber the customer is going to bury it but should it be enclosed in ducting for mechanical protection?

thanks

carl

?

What do Manufactures instructions say.....

 

[revjames]

?What do Manufactures instructions say.....

Instructions? who looks at the instructions? Probably the first place to check but usually the last.

These things usually are connected to an inverter and transformer to change the DC into usable AC of the correct voltage and some kind of regulator and meter to send any excess to the grid. I think you get 30p/unit for excess power returned to the grid as some kind of incentive for 'green' power.

 

[0151]

thanks for replys guys

its cost about

 

[Dane]

thanks for replys guysits cost about

 

[Andy™]

paying

 

[Lurch]

Think the last time I worked it out it would take 30 odd years for the average household to make it pay. I sort of gave up thinking about it at that point.

 

[revjames]

So its generating AC, then being rectified and then going into an inverter? whats the point in that?

 

[Andy™]

unless the blades spin at an exact speed to get 50hz, its no good, so is changed to DC then back to AC at 50hz

 

[revjames]

I see so the inverter rectifies the output from the turbine and then switches the DC via the IGBT's to give the 50Hz at 230V. Clever these Japanese....

 

[DJ1]

A rectified DC output from the turbine seems very odd, I have not come accross a turbine that does not produce a 3 phase AC output.

To rectify to DC at the turbine then supply a DC-AC inverter has huge efficiency losses.

Normally any grid tied unit has the 3 phase AC output hard wired to a Voltage regulator/inverter which connects to mains electric.

Sounds to me the unit above is not a correctly spec'ed up job.

 

[steptoe]

perhaps its the chinesenglish manual here thats got it wrong.