520 W TOPCon solar panel with 132 cells. Voc 46.6 V · Isc 14.2 A · TcVoc -0.23%/°C.
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7 panels found · 4332 panels excluded
510 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.6 V | 46.2 V | 0.9% |
| Vmpp | 38.7 V | 38.5 V | 0.5% |
| Isc | 14.2 A | 14.05 A | 1.1% |
| Impp | 13.44 A | 13.25 A | 1.4% |
| TcVoc | -0.23 %/°C | -0.23 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
530 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.6 V | 47 V | 0.9% |
| Vmpp | 38.7 V | 38.9 V | 0.5% |
| Isc | 14.2 A | 14.35 A | 1.1% |
| Impp | 13.44 A | 13.62 A | 1.3% |
| TcVoc | -0.23 %/°C | -0.23 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
540 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.6 V | 47.4 V | 1.7% |
| Vmpp | 38.7 V | 39.1 V | 1.0% |
| Isc | 14.2 A | 14.49 A | 2.0% |
| Impp | 13.44 A | 13.81 A | 2.8% |
| TcVoc | -0.23 %/°C | -0.23 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
540 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.6 V | 47.68 V | 2.3% |
| Vmpp | 38.7 V | 39.79 V | 2.8% |
| Isc | 14.2 A | 14.34 A | 1.0% |
| Impp | 13.44 A | 13.57 A | 1.0% |
| TcVoc | -0.23 %/°C | -0.23 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.28 %/°C | ±0.010 %/°C |
530 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.6 V | 47.81 V | 2.6% |
| Vmpp | 38.7 V | 40.24 V | 4.0% |
| Isc | 14.2 A | 14.22 A | 0.1% |
| Impp | 13.44 A | 13.17 A | 2.0% |
| TcVoc | -0.23 %/°C | -0.23 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.28 %/°C | ±0.010 %/°C |
520 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.6 V | 47 V | 0.9% |
| Vmpp | 38.7 V | 40.1 V | 3.6% |
| Isc | 14.2 A | 13.4 A | 5.6% |
| Impp | 13.44 A | 13 A | 3.3% |
| TcVoc | -0.23 %/°C | -0.25 %/°C | ±0.020 %/°C |
| TcPmax | -0.29 %/°C | -0.3 %/°C | ±0.010 %/°C |
500 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.6 V | 45.55 V | 2.3% |
| Vmpp | 38.7 V | 38.35 V | 0.9% |
| Isc | 14.2 A | 13.93 A | 1.9% |
| Impp | 13.44 A | 13.04 A | 3.0% |
| TcVoc | -0.23 %/°C | -0.27 %/°C | ±0.040 %/°C |
| TcPmax | -0.29 %/°C | -0.35 %/°C | ±0.060 %/°C |
String Compatibility Calculator
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Voc
46.6 V
Vmpp
38.7 V
Isc
14.2 A
Impp
13.44 A
TcVoc
-0.23 %/°C
TcPmax
-0.29 %/°C
Pmax
520 W
Cells
132
Length
2094 mm
Width
1134 mm
Thickness
30 mm
Weight
25 kg
The Sun Earth DXM8-66H 520W is a 520 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 |
|---|---|---|---|
| DXM8-66H 510W | 510 W | 46.2 V | 14.05 A |
| DXM8-66H 530W | 530 W | 47 V | 14.35 A |
| DXM8-66H 540W | 540 W | 47.4 V | 14.49 A |
| DXM8-66H 550W | 550 W | 47.8 V | 14.62 A |
| DXM8-66H 555W | 555 W | 48 V | 14.69 A |
The most critical specs to match are: cell count (must be exactly 132), Voc close to 46.6 V (within ±5%), and temperature coefficient TcVoc close to -0.23%/°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 Sun Earth DXM8-66H 520W.