diy solar

diy solar

Unboxing of Deye 16K Hybrid Inverter

Shit… I have 31Kwh of batteries being delivered Monday and I thought that was a lot at 225Kg!
Each Battery is 277 KG each and the total of 1,939 KG and that's one hell of a freaking heavy. A dolly will not cut it, need a hand pallet truck to move it ?
 
These perhaps: https://www.alibaba.com/product-detail/Felicity-Brand-48V-300AH-home-use_1600076854773.html


The link is for a Battery without the Smart BMS and WILL NOT communicate with the Deye/Sol-Ark in close loop communication and lower quality cell. They STOP manufacturing this model since last year. The price listed on most Alibaba listing are deceptive with low ball price to lure you into buying. Buyer beware.

Click here for the Felicity 48 Volt 15kWh LiFePO4 with BMS, CAN & RS485 with BYD 6000 cycle LFP cell $4,595.00 ON SALE

1673035111275.png


1673035723914.png
 
Last edited:
107.52KW of LFP Battery backup power.
1673217426196.png

Solid built quality like a tank.
1673217330254.png
Laser welded busbar with #2 interconnect wire. Transparent acrylic cover for protection.
1673217759289.png
250A fused installed on BMS to battery terminals post.
1673217940151.png
Connectors for Balance wire and temperature sensor are silicone glued to prevent loose connection.
1673218137714.png
Hidden cable raceway for a clean look
1673218207375.png
250A double ganged breaker
1673218279340.png
BMS circuit board and IO terminals. With 250A breaker and 250 Fuse, that's double protection ?
1673218344969.png
CAN Bus/ModBus RS485 communication and DIP switch.
1673218409982.png
 
Last edited:
4 level stacking 4 compressed 300A BYD LFP prismatic cell in a module. In a 16S1P configuration. The castor with brakes makes moving this heavy battery around a breeze.
1673218692363.png
Current capacity of 5*200A*51.5V=51.2KW + the 7 new battery pack will have a whopping 158.72KW of LFP Backup power. That's more battery juice than 2*Tesla Model Y long range ?
1673218902163.jpeg
 
Last edited:
You've been a busy beaver this weekend. That's a lot of uncrating and moving around of those heavy beasts.
I can't handle this crates, they are just to freaking heavy for me. I've to hire another moving company to move from the front of the house to the garage in the back and un-crate them.

Initial delivery from the CFS warehouse after the unloading in Long Beach Port, CA
1673219921488.png
All 7 creates at the front driveway. The delivery drivers just won't unload it at my back alley garage ?
1673220023941.png
The guys from the Movers are great. They drive to the back garage to unload.
1673220148194.png
Instead of removing all the plywood panels, they found a easier way by removing base0 and unbolt. Then pull the whole wooden crate from the top. It still takes 2 guys two hours. But they get the job done. ?
1673220328654.png
 
I spent about 20 - 30 minutes uncrating each of mine. It was funny when they delivered mine they were laying in the back of a van. 2 guys said it took 10 guys to get them in, I assume 5 for each battery? So they asked me how many people I had to help. I said the 3 of us are enough. So we slid them over the rear and tilted them down to the ground. Then we crab walked them up the driveway about 10 - 15 feet until they were under the carport. Done. I undid the tabs on each corner to get the panels off and then undid the bolts on the side brackets to get the batteries out. But at about 350 lbs they are heavy puppies, good thing they don't hang on the wall!
 
Just a recap of the Growatt ATS 11400T-US Combo ATS (Auto Transfer Switch) / Split-phase Autotransformer rated at 11.4KW that I've purchased from Signature Solar for $498.00. I selected this unit over the $329.00 5KW unit due to the high 11.4K passthrough rating. However, the 11.4KW is less than the Deye 16K AC output. The extra for the Auto Transfer Switch functionality is not much of a use for my application as a Solar Generator to my current configuration of 2 units of Deye 8K operating in Parallel. The idea was to provide a Gas generator like Backup without the use of dirty, noisy and slow 1 mins Auto Transfer Switch. The 16K will be install with a Transformer Interlock kit at the entrance 200A main breaker fed by the Gird provider, with a large 107KW of LFP battery bank. If the current 51KW battery bank reach to 20% SOC shutdown, it will simply pull power from the 16K that is acting as a simulated Gird that is capable of providing 7 days of backup power.

Having tested the Growatt 11.4K and calculated how it implement the passthrough power, I decided to modify the unit to produce a much higher passthrough.

1673240208436.png

1673240123303.png

Here is a PIC of the internal of the unit when I first received it. The units implement the ATS with a pair of expensive ABB contactor (they are sold on FleaBay for more than a hundred bucks). Below are pics of the motification.

1673241379691.png

The Growatt implement a 3 pole 80A MCB for the Spilt-phase output for safety will shutdown the output if the are any overcurrent or overvoltage protection of the new Split-phase LOAD panel. This will eliminate the issues of energizing the 120V circuit when the Neutral is lost as was raised by Ian from Watt24; with the use of the SolarEdge Autotransformer.

1673241537414.png

The pair of ABB implement the Auto Transfer Switch from Grid failure to ESP (Critical Load) of the Hybrid Inverter. This is of no use for my application and is restrict the Single-phase 240V L1-L2 passthrough with a 63A limit.
1673241794474.png

The schematic of the Growatt with dual GRID and EPS input.

1673241960841.png
 
Here's the modification.

Bye Bye ABB
1673242411346.png
1673242354690.png

Implemented a 80A breaker and rewiring the input wire with the correct sizing per Cerro Wire Amperage rating chart

1673242761053.png
Here's the final result of the mod, the Growatt will now able to provide a AC sing-phase L1-L2 240V * 80A = 19,200W ~ 19.2KW and that exceed the 16KW from the Deye 16K.
1673242528923.png
 
Just a recap of the Growatt ATS 11400T-US Combo ATS (Auto Transfer Switch) / Split-phase Autotransformer rated at 11.4KW that I've purchased from Signature Solar for $498.00. I selected this unit over the $329.00 5KW unit due to the high 11.4K passthrough rating. However, the 11.4KW is less than the Deye 16K AC output. The extra for the Auto Transfer Switch functionality is not much of a use for my application as a Solar Generator to my current configuration of 2 units of Deye 8K operating in Parallel. The idea was to provide a Gas generator like Backup without the use of dirty, noisy and slow 1 mins Auto Transfer Switch. The 16K will be install with a Transformer Interlock kit at the entrance 200A main breaker fed by the Gird provider, with a large 107KW of LFP battery bank. If the current 51KW battery bank reach to 20% SOC shutdown, it will simply pull power from the 16K that is acting as a simulated Gird that is capable of providing 7 days of backup power.

Having tested the Growatt 11.4K and calculated how it implement the passthrough power, I decided to modify the unit to produce a much higher passthrough.

View attachment 128634

View attachment 128633

Here is a PIC of the internal of the unit when I first received it. The units implement the ATS with a pair of expensive ABB contactor (they are sold on FleaBay for more than a hundred bucks). Below are pics of the motification.

View attachment 128637

The Growatt implement a 3 pole 80A MCB for the Spilt-phase output for safety will shutdown the output if the are any overcurrent or overvoltage protection of the new Split-phase LOAD panel. This will eliminate the issues of energizing the 120V circuit when the Neutral is lost as was raised by Ian from Watt24; with the use of the SolarEdge Autotransformer.

View attachment 128638

The pair of ABB implement the Auto Transfer Switch from Grid failure to ESP (Critical Load) of the Hybrid Inverter. This is of no use for my application and is restrict the Single-phase 240V L1-L2 passthrough with a 63A limit.
View attachment 128639

The schematic of the Growatt with dual GRID and EPS input.

View attachment 128640
So, when your modifications are complete, would your passthrough then be 16K?
 
So, when your modifications are complete, would your passthrough then be 16K?

First let's clarify the "Pass through" terminology with respect to the Deye 16K/Sol-Ark 15 in general. If you read the Data sheet of the 16K/15K, they are rated 200A pass through on AC Grid.

For my Application, the 200A AC Passthrough has no relevance for my application as a Backup Generator to the current 2 Parallel 8K, as the 16K is NOT Grid Tie at all. The 16K being a Single-phase L-120V N-120V, the Growatt will provide the Neutral wire for off-grid to support the 120V Split-phase Load. To understand how the any autotransformer work, it will accept a 240V single-phase input and through the physical Copper winding transformer with split winding with a 180 phase L1-120V L2-120V and the Neutral that carries no voltage for the return path of "used" electron that flows from the "Hot" L1/L2 wire back to the transformer. The transformer on the Growatt provides 41A*120V on the L1-N = 5,000W ~ 5KW and the same on the L2-N leg. The transformer will Balanced the uneven load from L1 & L2 automatically. (that's the beauty of a Low Frequency Transformer!) As for the L1-L2 240V, the Growatt will simply passthrough from the Sing-phase 240V L-N input directly to the L1-L2 240V of the output of the 80A triple pole MCB breaker. The Deye 16K limitation is 16KW while the Sol-Ark 15K is 12KW. Now that I've modify the Input L-N of the Growatt to match the output with 80A*240V = 19,200W ~ 19.2KW

With reference to the above explanation, the answer to your question is YES, the modified Growatt passthrough output now exceed the specs of the 16KW with a 19.2KW. Physically, the limit of the Deye 16K is 16KW as implemented in the hardware and the Sol-Ark 15K is limited to 12KW respectively.

The Deye 16K will provide a LOAD out put of 16KW matching the current 2 Deye 8K in Parallel with a 16KW on LOAD.

Had I know earlier, the Growatt 5000W unit cost $320 bucks will work the same after modification which is cheaper saving an extra 180 bucks. Oh well I learn something new. ?
 
Last edited:
To accomplished the mod, the following parts are required, there is the link for the AC 120V/240V 80A 50HZ~60HZ MCB and 3 AWG stranded copper THHN rated wire

Caution, DO NOT INSTALL ANY DC rated MCB breaker, you're working with high current mod. Do not try if you're not familiar or comfortable with electrical system. I posted this modification to document the implementation for a off-grid Generator project.
 
Last edited:
To accomplished the mod, the following parts are required, there is the link for the AC 120V/240V 80A 50HZ~60HZ MCB and 3 AWG stranded copper THHN rated wire

Caution, DO NOT INSTALL ANY DC rated MCB breaker, you're working with high current mod. Do not try if you're not familiar or comfortable with electrical system. I posted this modification to document the implementation for a off-grid Generator project.
Sounds like you know what your doing, but you're going to have to provide a detailed step by step. I won't attempt this unless I know every single step. So far I just have a general idea of what you're doing.
 
That transformer has a sticker right on the front that says it is rated for 5 kva. Also having the neutral leg going through a breaker is unnecessary and in fact adds an extra point of failure that could cause problems.
Are you sure this is not all going to end in tears?
 
That transformer has a sticker right on the front that says it is rated for 5 kva. Also having the neutral leg going through a breaker is unnecessary and in fact adds an extra point of failure that could cause problems.
Are you sure this is not all going to end in tears?
I was thinking the same thing but, since I'm not sure and I don't want to look like an idiot. What I can gather from his explanation is that after his modification the 5kva transformer only acts as the Neutral point rather something that provides 1 or the other 120v leg. But again my understanding is probably rubbish. I hope he can clarify further.
 
Back
Top