[RE-wrenches] max PV voltage in Canada

[Jerry Caldwell]

Thank you Rob,
So instead of using specific weather data & temperature coefficients, they use one derate factor for the whole country?  Is the system maximum voltage 600V?

I found the following from a presentation online, but no quick easy answer for my question:

Voltage Rating [50-006]
• 50-006 Voltage Rating of Photovoltaic
Source Circuits
Voc x 125%
• Rated open circuit voltage
• Temperature affects Voc of modules.
• Based on ambient temperature of -40°C.

Best,
Jerry Caldwell




________________________________
From: Rob Harlan <mendosol at mcn.org>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Sent: Monday, August 31, 2009 12:27:15 PM
Subject: Re: [RE-wrenches] max PV voltage in Canada

Re: [RE-wrenches] max PV voltage in Canada 
Jerry,
This might address what you are asking: 
Rule # 50-006 of the Canadian Electrical Code increases the voltage rating of the photovoltaic source circuit by 25% above the STC rated open circuit voltage.  This would apply to the photovoltaic output circuits as well. 
Hope that helps,
Rob
Rob Harlan
Executive Director
Solar Energy Society of Canada
Northern Alberta Chapter
(780) 439-5608
office at solatalberta.ca




On 8/31/09 11:41 AM, "Jerry Caldwell" <solarcowboy at yahoo.com> wrote:

> Dear Wrenches,
> 
> Anyone know off the top of their head what the maximum PV array voltage is per 
> the Canadian Electric Code?  Are there any published voltage restrictions for 
> behind the fence installations (for Ontario in particular)?
> 
> Cheers,
> Jerry Caldwell
> 
> 
> 
>       
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