[RE-wrenches] Exploding RSD Unit
Christopher Warfel
cwarfel at entech-engineering.com
Wed Sep 1 08:01:15 EDT 2021
Is this the same concept as Tigo? (and others)
On 8/31/2021 5:15 PM, Jerry Shafer wrote:
> With outback fire raptor has been successful, it has a power supply
> and if you shut the inverter or use the button either will shut off
> the RSD. This is all it is no optimizer, no data, no bypass for shade
> just RSD.
> Jerry
>
> On Fri, Aug 27, 2021, 8:48 AM James Jarvis <jj at aprsworld.com
> <mailto:jj at aprsworld.com>> wrote:
>
> So who has a good reliable off grid RSD? It all looks like failure
> prone garbage to me.
>
> Thank you,
>
> -James Jefferson Jarvis
> APRS World, LLC
> +1-507-454-2727
>
> (Sent from my phone. My apologies for spelling errors and brevity.)
>
> On Fri, Aug 27, 2021, 05:02 Tump <tump at swnl.net
> <mailto:tump at swnl.net>> wrote:
>
> I would once again say that; we as an industry can influence
> not only the writing of the code but with what we are /buying/
> OR /not buying./
> If the devices we are required to install to make things “more
> safe & reliable”, at the cost of our livelihoods &
> reputations, we all need to make the folks that are building
> the RSD crap and those who require installation of
> questionably safe & reliable crap aware of these problems.
> WE can thru either going to the code development meetings AND
> NOT buying or installing this stuff. Not too easy when a huge
> amount of solar is rooftop installs. As many of the installers
> in the NE know its not a single level ranch were installing
> this stuff on, short season & man lift required.
> Tell your supplier why you are not buying that brand, let
> your supplier & folks on the list what manufacture has good
> reliable products AND tech support that we can understand, who
> we can get in a timely fashion, and get the satisfaction of a
> prompt replacement. IF we don’t sell it they won’t have a job
> or a market.
>> On Aug 26, 2021, at 2:09 PM, Jeremy Coxon
>> <jcoxon at sunwindpowerinc.com
>> <mailto:jcoxon at sunwindpowerinc.com>> wrote:
>>
>> Carl,
>>
>> Did you get any kind of joy out of APSmart on that failure?
>>
>> I will say that their tech support guy did at least try to be
>> helpful, but the language barrier was really really steep and
>> their distribution channels are less than ideal. Their
>> response to a request for compensation was that they would
>> not be profitable if they had to pay for truck rolls for such
>> a low cost item. I really don’t think they GET IT. We’ve
>> been in business for over 16yrs and this one failure could
>> easily have ended that run.
>>
>> I cannot imagine we’re alone here. I was told by AP that
>> their failure rate was 0.2%. Now, I come from a reliability
>> engineering background in petro chemical/ big pharma where a
>> 0.2% failure rate would be catastrophic. Can you imagine
>> that 2 out of every 1000 pills made could cause death? We
>> engineered secondary systems and multiple quality checks to
>> contain catastrophic consequences for components that had
>> know failure rates higher than acceptable values. A simple
>> solution to this fire initiation issue would be a metal
>> enclosure instead of plastic casing. That still doesn’t
>> really solve the problem of extra connections though.
>>
>> Best Regards,
>> Jeremy Coxon NABCEP # 091308-21
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>
>
>
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--
Christopher Warfel
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
401-466-8978
<http://entech-engineering.com>
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