Hi All,
Have been running 1 Growatt SPF 5000 SE off 5400W of panels now for over 5 months. Have decided to expand my system to 2 inverters in parallel and have some questions that I can't find answers to.
New system:
2 x Growatt SPF 5000 SE both powering same loads using parallel kits, 16 x 540w panels, 12 kWh LIfepo4 battery (self built)
Solar array: 2 strings, 1 for each inverter, each string is 8 panels in series. Each inverter will have 4320w (8 x 540w) 12.9A @ 330vDc. Each string on seperate 15 amp fuse.
Battery: will be connected to both inverters (will expand battery in future) Each inverter (2) has a C class breaker between it and the battery. All cables are equal length.
No Utility connection.
240v AC Output: Each inverter is connected to a seperate breaker.
My questions that are not so clear in the user manual:
Parallel setup, Single phase
Step 1. On the AC output side
User Manual: "Ensure all breakers in Line wires of load side are open and each neutral wires of each unit are connected together"
Breakers I have are 2 pole each, break both active and neutral.
Question 1: Do I need to connect both neutrals and Actives together before the individual breakers? or just the Neutrals?
Step 4. AC input.
User Manual: "Switch on all AC breakers of Line wires in AC input. Its better to have all inverters connect to utility at the same time. If not, it will display warning 15."
Question 2: Can I start up the inverters using Solar array or Batteries as I have no AC input? If needed I can start up on AC by running some extension cables, but would prefer not to.
Thanks in advance.
Nick
Have been running 1 Growatt SPF 5000 SE off 5400W of panels now for over 5 months. Have decided to expand my system to 2 inverters in parallel and have some questions that I can't find answers to.
New system:
2 x Growatt SPF 5000 SE both powering same loads using parallel kits, 16 x 540w panels, 12 kWh LIfepo4 battery (self built)
Solar array: 2 strings, 1 for each inverter, each string is 8 panels in series. Each inverter will have 4320w (8 x 540w) 12.9A @ 330vDc. Each string on seperate 15 amp fuse.
Battery: will be connected to both inverters (will expand battery in future) Each inverter (2) has a C class breaker between it and the battery. All cables are equal length.
No Utility connection.
240v AC Output: Each inverter is connected to a seperate breaker.
My questions that are not so clear in the user manual:
Parallel setup, Single phase
Step 1. On the AC output side
User Manual: "Ensure all breakers in Line wires of load side are open and each neutral wires of each unit are connected together"
Breakers I have are 2 pole each, break both active and neutral.
Question 1: Do I need to connect both neutrals and Actives together before the individual breakers? or just the Neutrals?
Step 4. AC input.
User Manual: "Switch on all AC breakers of Line wires in AC input. Its better to have all inverters connect to utility at the same time. If not, it will display warning 15."
Question 2: Can I start up the inverters using Solar array or Batteries as I have no AC input? If needed I can start up on AC by running some extension cables, but would prefer not to.
Thanks in advance.
Nick