GC-1000 blowing string fuses [RE-wrenches]

[Bill Brooks]

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Jim,

My guess is the fuses are wearing out. It gets hot on that combiner board.
Also, make sure that the fuse holders are bent together (tight). Loose
holders will also contribute to high temperatures and early failures.

Bill.

-----Original Message-----
From: Jim Grundy [mailto:eenergy33 at aol.com] 
Sent: Tuesday, September 06, 2005 2:21 PM
To: RE-wrenches at topica.com
Subject: GC-1000 blowing string fuses [RE-wrenches]

Hello Wrenches,

    I have an AES GC-1000 that has been in the field operating with no 
trouble for about four years.  Recently, it started blowing the 10 amp
string fuses. 
 It is connected to 8 Solarex MSX-120 modules.  The string current should 
never near the 10 amp fuse rating.  After replacing the blown fuse, and
testing 
all PV and grid specs, the unit restarts and operates fine for a few more 
weeks.  I have not been able to see any correlation to temperature, high 
insolation, etc.

Any thoughts or similar experiences to share would be appreciated.

Thanks,

Jim Grundy
NABCEP Certified Solar PV InstallerT
Elemental Energy
1750 Clark Rd
E. Montpelier, VT   05651
(802)-476-3441 P
(802)-476-5680 F
(802)-272-8933 C
EEnergy33 at aol.com

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