[RE-wrenches] Tigo Rapid Shutdown equipment

[Thomas Hall]

Aloha Chris.
We have been working with Tigo on repairs of a 10 or 11 year old system consisting of 352 original Tigo MMES075V units on a commercial rooftop. Original installer went belly up. The 100 kW Satcon inverter needed repairs. (got it repaired !) The Tigo monitoring system was OFF-line for many years. We put in a new communication access point, and found 3 units off-line. Since that time Tigo warranted the damaged units with swappable Tigo's TS-4, helped with commissioning the new units, reprograming ALL existing units with new updates, and has been very communicative and helpful. In my opinion, still a solid product, and still working strong. Not going to work for your thought on AC coupling, but in my opinion, a good company to work with if you decide on DC.

Thomas Hall
Solar Specialty Group INC C-33998
dba Specialty Group Electric
808-854-9539<tel:808-854-9539>
thomashall at solarspecialtygroup.com<mailto:thomashall at solarspecialtygroup.com>
www.solarspecialtygroup.com<http://www.solarspecialtygroup.com>
NABCEP Certified PV Installation Professional ® 031310-92
Certified Thermographer





From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> on behalf of Dave Tedeyan <dave at sungineersolar.com>
Date: Wednesday, August 25, 2021 at 3:03 AM
To: cwarfel at entech-engineering.com <cwarfel at entech-engineering.com>, RE-wrenches <re-wrenches at lists.re-wrenches.org>
Subject: Re: [RE-wrenches] Tigo Rapid Shutdown equipment
Hi Chris,
I also am curious of others experiences. I've got one system with SMA and the TS4-R-F. No problems, but it's only 6 months old. I hear that SMA now recommends the ones made by JMS, but it looks like essentially the same thing.
Cheers,
Dave
On Tue, Aug 24, 2021, 11:22 AM Christopher Warfel <cwarfel at entech-engineering.com<mailto:cwarfel at entech-engineering.com>> wrote:

WRENCHES,

We are meeting our customer demand for more multimode systems.  All are grid interconnected. I wanted to use micro inverters to ac couple, but I have to look at the better economics of dc coupling.  I have never used a dc module level Rapid Shutdown device. In the past we have had ground mounted or used Outback's huge dc array disconnect.

My question, and please feel free to contact off list, are Tigo's TS-4 and similar devices reliable.  I know that they were not considered as reliable as an Enphase inverter for example at one time.  Thank you for any previous experience you can relay.



Chris








--
                                         Christopher Warfel
                     ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
                                                            401-466-8978
[cid:part1.422A14A7.9E5754F4 at entech-engineering.com]<http://entech-engineering.com/>

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