600vdc rated equipment [RE-wrenches]

[Dan Rice]

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Jeremy,

The most recent PSPV documentation I have is dated 8-02-05. The cover page
shows a reprint of the label that is affixed to the front cover of the PSPV.
This label, which includes the ETL listing symbol, states "Maximum voltage
600 VDC and 250 VAC." The product description in the instructions also
states that the PSPV is ETL listed for use with OBFH touch-safe fuse holders
for systems with open circuit voltages up to 600 VDC. The question of
whether or not fuses are required depends upon a number of factors: series
fuse rating of the module used, number of parallel strings, and the type of
inverter. (Contact me off list, and I can point you to a good, concise
description of how to determine when series string fusing is required). When
series fusing is required, you're correct in using the PSPV with the OBFH
fuse holders on your grid tie systems, provided you're using the correct
fuse type and amperage and you're not exceeding 600 VDC open circuit
voltage, corrected for your lowest expected temp, and provided your
inspector concurs.

Enjoy grid tie solar. Thanks for your help with the generator question.

Dan Rice
Abundant Sun, LLC.

----- Original Message ----- 
From: "Jeremy Rodriguez" <allsolar at ris.net>
To: <RE-wrenches at topica.com>
Sent: Tuesday, April 18, 2006 10:44 PM
Subject: 600vdc rated equipment [RE-wrenches]


Wrenches,
I notice on the label of an Outback PSPV that it is not rated for 600vdc
like the PSSB yet there are 600v safetouch fuse holders available for
the PSPV. I have been quoting the PSPV with those fuse holders for grid
tie pv systems. Is this the proper way to fuse a high voltage series
string, are fuses required?

New to the grid tie market!
Jeremy
All Solar
CO, USA

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