Y&H Grid Tie Inverter 600W Stackable DC30-55V PV Input AC110V MPPT Pure Sine Wave Micro Inverter fit for 30V 36V Solar Panel/36V Battery

As with many of my reviews this is my personal opinion none of my reviews are compensated in any way shape or form. This product works great, the quality is good and the features are pretty awesome. it has indicators for every function, a hard to find feature and even harder at this price point, very impressive. The seller/manufacturer customer service is outstanding! I recommend this product.UPDATE:This GTI has performed perfectly, I have external cooling fans on a smart switch that turns on/off daily. I use a Victron MPPT controller to keep input voltage around 36-42 volts DC depending on how sunny is the day. On a daily basis it produces around 3-4+ Kw again depends on how is the day but here in TX is very sunny I do have some early morning partial panel shade but other than that the little system has pumped over 200 kilowatts into the grid (I have an agreement with the electric company). The internal fans will only come on when the Amperage reaches around 13 Amps occasionally during peak hours maybe for 1 minute or less. I'm very pleased with the quality of this product and I'm looking forward to get the 1Kw GTI soon. Update, added 2 more panels and I'm pushing up to 700 watts at 15-19 amps (during the months of June-July) out of that it uses around 600-650 watts due to losses, but still working great, just make sure the voltage is within spec. I'm very happy with this gadget.

This unit (GWV-600W) has design issue.The upper switching transistors on right don't get air flow, it's basically blocked by the input DC connector.As a result the upper transistor fries after a while, deemed the unit unusable.Over the last 6 years I replaced 4 units (I'm using two in my solar), two of them I'm sure about the failure, for the other two I assume this was the failure.Until the designer fix this, these units not recommended for new design.Meanwhile, my solution: I bend open the upper cover (next to the DC input) which enable air flow. Seems to help on the unit I did this two years ago.

Device got very hot which prompted me to put a meter on the input and output sides. For every 2 watts that goes in only one comes out.

I have 800W of solar panels supplying this inverter. During the day it goes from 0 to about 500W loading. Above 300W's the internal fans kick in occasionally and over 400W they stay on in a room temp of 75f. I added an external computer fan that blows air on the cooling vanes which keeps the internal fan mostly off even under high loads. According to several meters measuring the DC in and AC out I am averaging 92% efficiency under 125W load and 94-95% efficiency over that. So far has done a great job and I am waiting to see how it handles the summer sun when the solar panels will keep a larger and longer loading pattern on it.

I owned this grid tie inverter for one and a half years and I would like to report the following:1- The efficiency, measured by me during a one year period, was never better than 80%.2- After one an a half year of service, the device stopped working.3- Looking in the inside of the inverter, I found the craftmanship to be very poor, in line with the price paid.

I'm actually using this with a buck converter and V2L adapter to pull power from my EV back into the grid to save money during peak rates.

Hi.I bought this item some months age. Due to my job, I had to delay the installation. Finally, I placed it last week. It worked good for one week, but today in failed.I opened the box, one capacitor was damaged.How can I return this item?Update 11/20/2017.The guys will take care about the repair.The device works great after that. I ordered another one for a second tie grid.

Works just as advertised, maybe to well. My three 100 watt solar panels wired in series produces 63 open volts so this unit will not work. It must not see more than 60 volts. I was forced to only use two panels in series. Later I added another panel so I have two pairs of panels wired in series parallel giving me 250 watts in full sun.