515 W TOPCon solar panel with 108 cells. Voc 39.78 V · Isc 16.06 A · TcVoc -0.25%/°C.
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151 panels found · 4188 panels excluded
510 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.6 V | 0.5% |
| Vmpp | 33.75 V | 33.55 V | 0.6% |
| Isc | 16.06 A | 16 A | 0.4% |
| Impp | 15.26 A | 15.2 A | 0.4% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
520 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.9 V | 0.3% |
| Vmpp | 33.75 V | 34 V | 0.7% |
| Isc | 16.06 A | 16.22 A | 1.0% |
| Impp | 15.26 A | 15.29 A | 0.2% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.7 V | 0.2% |
| Vmpp | 33.75 V | 33.7 V | 0.1% |
| Isc | 16.06 A | 15.64 A | 2.6% |
| Impp | 15.26 A | 14.69 A | 3.7% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.7 V | 0.2% |
| Vmpp | 33.75 V | 33.7 V | 0.1% |
| Isc | 16.06 A | 15.64 A | 2.6% |
| Impp | 15.26 A | 14.69 A | 3.7% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.7 V | 0.2% |
| Vmpp | 33.75 V | 33.7 V | 0.1% |
| Isc | 16.06 A | 15.64 A | 2.6% |
| Impp | 15.26 A | 14.69 A | 3.7% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.7 V | 0.2% |
| Vmpp | 33.75 V | 33.7 V | 0.1% |
| Isc | 16.06 A | 15.64 A | 2.6% |
| Impp | 15.26 A | 14.69 A | 3.7% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
500 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.83 V | 0.1% |
| Vmpp | 33.75 V | 33.17 V | 1.7% |
| Isc | 16.06 A | 15.96 A | 0.6% |
| Impp | 15.26 A | 15.08 A | 1.2% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.7 V | 0.2% |
| Vmpp | 33.75 V | 33.7 V | 0.1% |
| Isc | 16.06 A | 15.64 A | 2.6% |
| Impp | 15.26 A | 14.69 A | 3.7% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
505 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.9 V | 0.3% |
| Vmpp | 33.75 V | 33.3 V | 1.3% |
| Isc | 16.06 A | 16.16 A | 0.6% |
| Impp | 15.26 A | 15.17 A | 0.6% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
495 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.7 V | 0.2% |
| Vmpp | 33.75 V | 33.7 V | 0.1% |
| Isc | 16.06 A | 15.64 A | 2.6% |
| Impp | 15.26 A | 14.69 A | 3.7% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
500 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.9 V | 0.3% |
| Vmpp | 33.75 V | 33.9 V | 0.4% |
| Isc | 16.06 A | 15.7 A | 2.2% |
| Impp | 15.26 A | 14.75 A | 3.3% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
500 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 39.78 V | 39.9 V | 0.3% |
| Vmpp | 33.75 V | 33.9 V | 0.4% |
| Isc | 16.06 A | 15.7 A | 2.2% |
| Impp | 15.26 A | 14.75 A | 3.3% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
String Compatibility Calculator
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Panel Matcher
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How the Algorithm Works
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Voc
39.78 V
Vmpp
33.75 V
Isc
16.06 A
Impp
15.26 A
TcVoc
-0.25 %/°C
TcPmax
-0.29 %/°C
Pmax
515 W
Cells
108
Bifaciality
80%
Length
1962 mm
Width
1134 mm
Thickness
30 mm
Weight
27.3 kg
The GCL-NT12R/54GDF 515 is a 515 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.
Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.
| Model | Power | Voc | Isc |
|---|---|---|---|
| GCL-NT12R/54GDF 505 | 505 W | 39.45 V | 15.94 A |
| GCL-NT12R/54GDF 510 | 510 W | 39.6 V | 16 A |
The most critical specs to match are: cell count (must be exactly 108), Voc close to 39.78 V (within ±5%), and temperature coefficient TcVoc close to -0.25%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.
A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.
If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original GCL-NT12R/54GDF 515.