jacob.wesley.smith
New Member
Hello,
I currently have 30 335W panels (Yingli YL335D-36b) that I picked up for $30 a piece on facebook marketplace. I'm installing them on my roof and concerned about being over amperage for Tigo Optimizers. I know I need RSD, and the optimizers seem to be ~$800 more for the whole system, and as a data geek, I like the prospect of knowing exactly what my system is doing.
I'm planning on running all 30 panels to a 6000xp inverter. Due to the topography of our roof, they will be on 3 different strings - I'm hoping that I can combine 2 of the 3 strings by way of using the optimizers. However, I think that may bring my voltage up too high.
6000xp max PV Voltage: 500V
Indianapolis adjusted lowest temperature Voc for 10 panels: 509 V (I'm potentially okay with this and just turning off PV in the event of super cold (once a decade) weather)
Isc: 9.8 amp
So, my previous plan (prior to looking at Tigo data sheet) was to combine 10 panels in series, then parallel that with another 10 to stay right around 500 V max, with ~19.6 amps. However, it looks like the Tigo optimizer has a max of 15 amp.
Am I correct that doing 10s2p for the panels would lead to too much amperage going through the later optimizers and causing them to fail / be unsafe?
The simplest solutions seems to be to run 4 strings, but then I would need either a second 6000xp or a separate charge controller that went straight to the battery that the inverter could pull from.
Any advice on reasonable steps? I have only purchased the solar panels and 6000xp so far, so open to other options for what to look at.
Overall goal of the system is to replace ~half of our energy consumption; more in summer, less in winter. (aka, not fully off grid, nor do I want to mess with making it able to backfeed the grid, hence the 6000xp as the inverter of choice to pull from grid if we use more than the system has available).
Thanks!
I currently have 30 335W panels (Yingli YL335D-36b) that I picked up for $30 a piece on facebook marketplace. I'm installing them on my roof and concerned about being over amperage for Tigo Optimizers. I know I need RSD, and the optimizers seem to be ~$800 more for the whole system, and as a data geek, I like the prospect of knowing exactly what my system is doing.
I'm planning on running all 30 panels to a 6000xp inverter. Due to the topography of our roof, they will be on 3 different strings - I'm hoping that I can combine 2 of the 3 strings by way of using the optimizers. However, I think that may bring my voltage up too high.
6000xp max PV Voltage: 500V
Indianapolis adjusted lowest temperature Voc for 10 panels: 509 V (I'm potentially okay with this and just turning off PV in the event of super cold (once a decade) weather)
Isc: 9.8 amp
So, my previous plan (prior to looking at Tigo data sheet) was to combine 10 panels in series, then parallel that with another 10 to stay right around 500 V max, with ~19.6 amps. However, it looks like the Tigo optimizer has a max of 15 amp.
Am I correct that doing 10s2p for the panels would lead to too much amperage going through the later optimizers and causing them to fail / be unsafe?
The simplest solutions seems to be to run 4 strings, but then I would need either a second 6000xp or a separate charge controller that went straight to the battery that the inverter could pull from.
Any advice on reasonable steps? I have only purchased the solar panels and 6000xp so far, so open to other options for what to look at.
Overall goal of the system is to replace ~half of our energy consumption; more in summer, less in winter. (aka, not fully off grid, nor do I want to mess with making it able to backfeed the grid, hence the 6000xp as the inverter of choice to pull from grid if we use more than the system has available).
Thanks!