Supplmental Home grid power Project

[jzeveney]

System online 03/31/2008

400Watt Wind Generator, Battery Room, Invert room.  

http://www.zeveney.com/IMG_6574.JPG

Battery Bank

Current configuration 10 6V Interstate BIMP golf cart batteries ($35 each)

http://www.zeveney.com/IMG_6575.JPG

Also showing AIMS 5000Watt inverter modified sine-wave

Inverter power is brought into home through this.  

http://www.zeveney.com/IMG_6576.JPG

This is my home built transfer relay box.  Notice the transformer.  The transformer is powered by the active inverter which energizes the 4 DPDT relay's each pole rated at 30amp.  This allows me to transfer up to eight circuits in real-time.  Should the inverter shut down the relay's automatically open and transfer power back to the utility company.

[ghurd]

 10 megs for 3 photos?

I was looking for the transfer relay.  Didn't find it.

G-

[Old F]

Jzeveney

I am thinking of doing something similar

Where did you get your relays ?

And are you planning  to monitor battery  state of charge so when the batteries  reach set state of discharge It will trade to grid power and trade back when they are recharged

Sound like your having fun

Old F

[jzeveney]

Sorry about the large files.

Here are the smaller versions

This is the relay box.

http://www.zeveney.com/IMG_6576_sml.jpg

Batteries & inverter

http://www.zeveney.com/IMG_6575_sml.JPG

Wind Generator

http://www.zeveney.com/IMG_6574_sml.JPG

Z

[jzeveney]

I purchased the relays from

http://www.mcmaster.com

Part number 7384k43  $23.22 Each

They are working great today.

And are you planning  to monitor battery  state of charge so when the batteries  reach set state of discharge It will trade to grid power and trade back when they are recharged.

Yes. Currently the inverter has a low Battery voltage shutdown around: 10.0 Volts this is to low I think. but that could be the at load voltage I don't know yet.

10Volts will damage the batteries so yes I want to create something which will turn the inverter off when the battery bank drops to 6.20 Volts no load.  I don't know yet what that equates to during inverter load.  I'm plaining to run a 175 amp load tomorrow and monitor the bank voltage before and during the inverter load.

I'm currenlty running 5 pair of 6V deep cycle bats. 6.2 is 25% discharged and should help maintain battery life.  (So I've read.) I may go as low as 6.1 but I'm taking it one step at a time.  

Z