[RE-wrenches] TL Inverters & Rapid Shutdown

[Randy]

Hi Wrenches,

We are being forced to adopt 690.12 Rapid Shutdown requirement based on
several explanations given to our industry:

1.       otherwise we would be ignoring the life safety and put our fire
fighters lives in peril 

2.     This product can be constructed from readily available,
over-the-counter code compliant components.  This (is) to be the intent of
CMP4 when compiling the NFPA 70.

 

We do not want to act like an industry that appears to be fighting against
safety. And we know there are a few products that are code compliant,
micro-inverters (don't comply with 705.12 (D) (6) because there are no
products), Solaredge, and Tigo (is it approved?) yet this is not how we
choose products.  

 

And the SMA SPS inverter is not going to work in a 690.12 environment
without complications as far as I can see. 

 

Appreciate comments that might support the right decision.

 

Thanks,

Randy

 

Randy Sadewic

Cell:    505 570-0137

 <mailto:Randy at PositiveEnergySolar.com> Randy at PositiveEnergySolar.com

 

http://positiveenergysolar.com/admin/content/uploads/PES-logo-3.jpg

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of Steve Jefferson
Sent: Tuesday, October 07, 2014 8:33 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] TL Inverters

 

The first gen of TL's did have a somewhat tight window for the DC window.

 

However, the new SBxxxxTL-US-22 (3kW - 7700kW, with secure power supply)
Start Voltage is 125, MPPT is 175-480 (max of 600Vdc)

 

Also, for larger needs, the STP (12kW - 24kW)  start voltage is 150, MPPT is
300-800V (max of 1000Vdc).

 

SMA America, LLC

Steve Jefferson

Service Line Supervisor

3925 Atherton Ave

Rocklin, CA 95765 - 3714

U.S.A.

Tel:  +1 916 625 3185 (direct)

Fax: +1 916 625 0871

Mobile: +1 916 622 4253

Email:  <mailto:Steve.jefferson at SMA-America.com>
Steve.jefferson at SMA-America.com

 <http://www.sma-america.com/> www.SMA-America.com

 

 <http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be>
cid:image001.png at 01CF1CFA.FE18BEB0

 

This email and any attachments thereto may contain SMA America, LLC
confidential, privileged and private material for the sole use of the
intended recipient. Any review, copying, or distribution of this email (or
any attachments thereto) by others is strictly prohibited. If you are not
the intended recipient, please contact the sender immediately and
permanently delete the original and any copies of this email and any
attachments thereto. Thank you.

 

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of Mark Byington
Sent: Tuesday, October 07, 2014 6:59 AM
To: RE-wrenches at lists.re-wrenches.org
Subject: Re: [RE-wrenches] TL Inverters

 

 

Just a word of caution to those not having experience with SMA TL inverters
- the larger units (7-11 kW) have an extremely narrow input DC voltage
window.  Depending on your module voltage and string design, all you need is
a module or two to be shaded to fall out of the MPPT input voltage range.
The smaller units (3-5 kW) with the Secure Power Supply don't have this
problem.  We no longer use these larger SMA TL inverters unless we can do
maximum string length (e.g. strings of 8 for SunPower 96-cell) and there is
zero shade at the site.

 

I believe SMA is in the process of adding larger units to the line that has
the Secure Power Supply.  They added the 6 kW unit earlier this year, and
just announced the 7 kW unit with Secure Power Supply.

 

Mark Byington

Cobalt Power Systems, Inc.

 

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20141009/f530c605/attachment-0002.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.png
Type: image/png
Size: 30736 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20141009/f530c605/attachment-0005.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 6339 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20141009/f530c605/attachment-0002.jpg>