[RE-wrenches] SMA AFCI events and ferrite cores
Harry Mahon
Michael.Mahon at sma-america.com
Fri Apr 8 16:40:10 EDT 2022
Bill -
SMA is continuously working to improve the accuracy of our AFCI detection and minimize impacts on system operation of this important safety function.
Intentionally degrading the signal coming into the Sunny Boy for the AFCI detection to act on is not recommended.
The most up to date FW for both the US-40 and US-41 lines provide for automatic restarts from AFCI events. An error message will be logged for each event and feed-in will be suspended, but the inverter will go back into production. If these events occur with high regularity, PLEASE treat this as a true arc fault and carefully investigate the system.
The SMA Online Service Center hosts a large number of articles in the knowledge base for perusal (login is not required, but some articles will be hidden without login).
Please contact the SMA America Service Line for inverter/site specific troubleshooting recommendations and or login to the Online Service Center to view Knowledge Articles:
https://my.sma-service.com
SMA-America service line: Service at SMA-America.com and 1-877-697-6283 (6am-5pm PT, Mon-Fri)
Best regards -
Mike
Michael Mahon
Senior Technical Trainer, Solar Academy
SMA America
3925 Atherton Rd
Rocklin, CA 95765
Mobile: +1 916 918 9412
www.SMA-America.com
Solar Academy website
Upcoming SMA America Solar Academy webinars: English and Spanish
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-----Original Message-----
From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of frenergy via RE-wrenches
Sent: Thursday, March 31, 2022 8:49 AM
To: Tump via RE-wrenches <re-wrenches at lists.re-wrenches.org>
Cc: frenergy <frenergy at psln.com>
Subject: [RE-wrenches] SMA AFCI events and ferrite cores
Wrenchers,
In searching the list I saw ferrite cores discussed for EMP and Enphase but a tech at SMA just told me I can put the DC conductors through ferrite cores to prevent false AFCI events in their SB-40 and
-41 inverters. Is this a thing? are folks doing this with success? Any tricks to installation?...seems straight forward.
Thanks,
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
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