[RE-wrenches] micro-inverters
frank -bz products
bzp at brick.net
Wed Sep 14 12:24:53 PDT 2016
Re 190's.
Not much to learn from dissecting a swollen 190. Most of the time the
swelling is caused by electrolytic capacitors that have failed. Some
very high current capacitors actually have brackets to bolt them down to
minimize swelling.
Frank BZP.
BZ Products INC.
8801 Gravois Rd.
St.Louis MO 63123 USA
314-644-2490
www.bz-products.net
On 9/14/2016 1:58 PM, Benn Kilburn wrote:
> You guys should really cut one of those swelled up ones and share the
> photos with us :)
>
> Benn Kilburn
> SkyFire Energy Inc.
> 780-906-7807
>
> On Sep 14, 2016, at 11:14 AM, Jerry Shafer <jerrysgarage01 at gmail.com
> <mailto:jerrysgarage01 at gmail.com>> wrote:
>
>> The 190's had component issues which case them to balloon up
>> Jerry
>>
>>
>> On Sep 14, 2016 10:11 AM, "William Miller" <william at millersolar.com
>> <mailto:william at millersolar.com>> wrote:
>>
>> Colleagues:
>>
>> We have M190s fail in beach installations. Some have had the
>> cases swell up like there is a tumor inside. I haven't cut them
>> open to see what's inside because they need to go back to
>> manufacturer.
>>
>> William
>>
>> On Sep 14, 2016, at 9:32 AM, Jerry Shafer
>> <jerrysgarage01 at gmail.com <mailto:jerrysgarage01 at gmail.com>> wrote:
>>
>>> Mike
>>> I also work near the ocean, its all around me here in Hawaii, we
>>> have had the 190's fail but not to environmental conditions and
>>> very few issues with 215's. Do you have any pics of the damage
>>> as l have seen very little salt issues.
>>> Jerry
>>>
>>>
>>> On Sep 13, 2016 9:11 PM, "Mike Nelson"
>>> <mdelectricsolar at gmail.com <mailto:mdelectricsolar at gmail.com>>
>>> wrote:
>>>
>>> I've had so many Enphase failures it's kind of ridiculous.
>>> We install most of our systems near the ocean so corrosion
>>> has played a big factor. The newer micro inverters are
>>> holding a much better, 215 and 250's. I have learned over
>>> the years that SMA makes the best product, and I mostly
>>> stick with them. Sometimes micro inverters are requested or
>>> really fit the installation particulars, so I still use them
>>> occasionally. I haven't yet tried solar edge.
>>>
>>> Michael D Nelson
>>> MD Electric & Solar, Inc.
>>> 707-684-0064 <tel:707-684-0064> mobile
>>> 707-884-1862 <tel:707-884-1862> office
>>> www.mdelectricsolar.com <http://www.mdelectricsolar.com>
>>> Sent from my iPhone
>>>
>>> On Sep 13, 2016, at 6:23 PM, Rebecca Lundberg
>>> <rebecca.lundberg at gmail.com
>>> <mailto:rebecca.lundberg at gmail.com>> wrote:
>>>
>>>> Esteemed wrenches,
>>>>
>>>> I'm hoping the experience of this list can help give us a
>>>> broader perspective on the current market performance and
>>>> as a secondary concern, tech support (or lack thereof),
>>>> from solar micro-inverter manufacturers.
>>>>
>>>> Are others having much trouble with micro-inverters? We
>>>> have had repeated issues with several different brands on
>>>> our systems in Minnesota:
>>>> - 8 Enphase systems with mostly M210 and M215, have had to
>>>> repeatedly go back to sites to replace units. The new
>>>> replacement ones seem to be lasting better (we sure hope
>>>> they will). Enphase is harder to contact in recent years,
>>>> but we're happy they at least provide a predictable
>>>> stipend. Are you also having to replace a lot of this brand
>>>> of product? Are the newer models holding up better?
>>>>
>>>> - We gave a new inverter busbar design concept a try
>>>> (tenKsolar) and though the micro-inverters were supposed to
>>>> take turns and be 'redundant,' the ones with APS
>>>> micro-inverters needed 100% replacement and the ones with
>>>> Lead Solar micro-inverters have a problem where if one of
>>>> them fails it appears to send a signal to all the rest so
>>>> the entire busbar stops working -- in action it's far from
>>>> redundant. When we purchased the tenKsolar Rais Inverter
>>>> Bus (RIB) the spec sheet didn't tell us what brand of
>>>> micro-inverter they would use as the OEM so we couldn't
>>>> research the viability of the product or company or
>>>> warranty stipend (or lack there-of) of the micro-inverter
>>>> OEM. We assumed it was a tenKsolar product and they would
>>>> provide warranty replacements, service, and tech support,
>>>> but our experience has been far from that. When something
>>>> goes wrong tenK says 'it's not our product that's failing'
>>>> because they don't actually manufacture the micro-inverter
>>>> (it's an OEM), the micro-inverter company says 'it's not
>>>> our product' because tenKsolar has it wired and used in a
>>>> very unique manner specific to the tenKsolar product, so
>>>> both manufacturers are backing away from any
>>>> responsibility. A 25-year warranty on the inverter busbar
>>>> is a great concept but if/when something goes wrong there
>>>> is no support and no apparent warranty at all except maybe
>>>> they will send us a new component that needs several hours
>>>> of work to re-install, so either the installer does the
>>>> warranty work for free or the customer has a very
>>>> unexpected expense to get their system back up and running
>>>> a year or two after it was installed; we think both
>>>> scenarios are unacceptable (from our installer perspective
>>>> :-), do any of you have experiences you can share here?
>>>>
>>>> I'm wondering if the climate in MN makes us an anomaly.
>>>> Based on these micro-inverter experiences we feel like the
>>>> Rapid Shutdown rule has forced us to use dc optimizers on
>>>> residential applications whether we want to or not -- is
>>>> that pretty much what all of you are doing too?
>>>>
>>>> Rebecca Lundberg
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