Evaluation of XW charge control [RE-wrenches]

[William Miller]

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Kirpal:

Thanks for your comments.  This reminds me of a potential design defect of 
the XW charge controller:  The manual indicates that you must put the unit 
in standby before disconnecting the unit or damage could result.  If indeed 
failure to activate standby mode on disconnect will damage the unit, we 
consider this a design flaw.  It is likely that untrained customers will 
fail to navigate to the standby mode and instead just activate the circuit 
breaker disconnect.

To prevent this, we are installing these controllers with two pole 
breakers-- one pole for input and one for output.  With this configuration, 
the unit is entirely disconnected with one action, hopefully preventing damage.

William Miller




At 12:56 PM 2/22/2008, you wrote:
>Wiliam....one other advantage is the integrated ground fault
>protection.......makes for cheaper and quicker
>installation....especially as all PV systems will be required to have
>GFP included.....keep us posted.....we still have not done any XW
>systems......waiting for more feed back so i appreciate yours......
>
>Sunny REgards,
>Kirpal
>Renewable Energy Systems


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