520 W TOPCon solar panel with 64 cells. Voc 46.77 V · Isc 13.57 A · TcVoc -0.25%/°C.
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2 panels found · 3708 panels excluded
515 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.77 V | 46.57 V | 0.4% |
| Vmpp | 39.84 V | 39.61 V | 0.6% |
| Isc | 13.57 A | 13.53 A | 0.3% |
| Impp | 13.05 A | 13 A | 0.4% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
510 W
TOPCon| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.77 V | 46.37 V | 0.9% |
| Vmpp | 39.84 V | 39.39 V | 1.1% |
| Isc | 13.57 A | 13.49 A | 0.6% |
| Impp | 13.05 A | 12.95 A | 0.8% |
| TcVoc | -0.25 %/°C | -0.25 %/°C | ±0.000 %/°C |
| TcPmax | -0.29 %/°C | -0.29 %/°C | ±0.000 %/°C |
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Voc
46.77 V
Vmpp
39.84 V
Isc
13.57 A
Impp
13.05 A
TcVoc
-0.25 %/°C
TcPmax
-0.29 %/°C
Pmax
520 W
Cells
64
Bifaciality
80%
Length
1958 mm
Width
1134 mm
Thickness
30 mm
Weight
27.5 kg
The TCL Zhonghuan TCL-MR520DT182-64NS 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 |
|---|---|---|---|
| TCL-MR510DT182-64NS | 510 W | 46.37 V | 13.49 A |
| TCL-MR515DT182-64NS | 515 W | 46.57 V | 13.53 A |
The most critical specs to match are: cell count (must be exactly 64), Voc close to 46.77 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 TCL Zhonghuan TCL-MR520DT182-64NS.