Hi,
I have a ten year old system with badly degrading canadian solar 250 Watt panels. Inverters still performing great. I am looking into replacing all panels with
Tiger Neo N-type 72HL4-(V) 585 Watt panels.
Can anyone advise if I can safely use 11 panels in a single string for each inverter? My installer seems hesitant to put more than 10 and I cannot figure out why there might be an issue with putting 11 - they claim its over the 6000Watts for the inverter but production in Malaysia will never reach rated output anyway.
This is my inverter:
2 x SB 6000TL-21 from sma (one for each string of 24 250 Watt panels):
Input (DC)
Max. DC power (at cos ϕ = 1) 6280 W
Max. input voltage 750 V
MPP voltage range / rated input voltage 210 V … 500 V/380 V
Min. input voltage / start input voltage 125 V / 150 V
Max. input current input A / input B 15 A / 15 A
Max. input current per string input A / input B 15 A / 15 A
Number of independent MPP inputs / strings per MPP input 2 / A:2; B:2
Output (AC)
Rated power (@ 230 V, 50 Hz) 6000 W
Max. AC apparent power 6000 VA
Nominal AC voltage / range 220 V, 230 V, 240 V / 180 V to 280 V
AC grid frequency / range 50 Hz, 60Hz / -5 Hz to +5 Hz
Rated power frequency / rated grid voltage 50 Hz / 230 V
Max. output current 26.1 A
Power factor at rated power 1
Adjustable displacement power factor 0.8 overexcited … 0.8 underexcited
Feed-in phases / connection phases 1 / 1
The panels I am looking at have those specs (see attachment):
Power: 585W
Optimum Operating Voltage (Vmp): 43.53V
Optimum Operating Current (Imp): 13.44A
Open Circuit Voltage (Voc): 52.47V
Short Circuit Current (Isc): 14.07A
Module Efficiency: 22.65%.
From what I can see 11 panels will be below MPP range (11×43.53=478.83V) so I am not sure if there is another limiting factor I need to consider. Any input will be greatly appreciated!
I have a ten year old system with badly degrading canadian solar 250 Watt panels. Inverters still performing great. I am looking into replacing all panels with
Tiger Neo N-type 72HL4-(V) 585 Watt panels.
Can anyone advise if I can safely use 11 panels in a single string for each inverter? My installer seems hesitant to put more than 10 and I cannot figure out why there might be an issue with putting 11 - they claim its over the 6000Watts for the inverter but production in Malaysia will never reach rated output anyway.
This is my inverter:
2 x SB 6000TL-21 from sma (one for each string of 24 250 Watt panels):
Input (DC)
Max. DC power (at cos ϕ = 1) 6280 W
Max. input voltage 750 V
MPP voltage range / rated input voltage 210 V … 500 V/380 V
Min. input voltage / start input voltage 125 V / 150 V
Max. input current input A / input B 15 A / 15 A
Max. input current per string input A / input B 15 A / 15 A
Number of independent MPP inputs / strings per MPP input 2 / A:2; B:2
Output (AC)
Rated power (@ 230 V, 50 Hz) 6000 W
Max. AC apparent power 6000 VA
Nominal AC voltage / range 220 V, 230 V, 240 V / 180 V to 280 V
AC grid frequency / range 50 Hz, 60Hz / -5 Hz to +5 Hz
Rated power frequency / rated grid voltage 50 Hz / 230 V
Max. output current 26.1 A
Power factor at rated power 1
Adjustable displacement power factor 0.8 overexcited … 0.8 underexcited
Feed-in phases / connection phases 1 / 1
The panels I am looking at have those specs (see attachment):
Power: 585W
Optimum Operating Voltage (Vmp): 43.53V
Optimum Operating Current (Imp): 13.44A
Open Circuit Voltage (Voc): 52.47V
Short Circuit Current (Isc): 14.07A
Module Efficiency: 22.65%.
From what I can see 11 panels will be below MPP range (11×43.53=478.83V) so I am not sure if there is another limiting factor I need to consider. Any input will be greatly appreciated!
