540 W PERC solar panel with 345 cells. Voc 46.9 V · Isc 14.76 A · TcVoc -0.27%/°C.
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5 panels found · 3695 panels excluded
535 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.9 V | 46.8 V | 0.2% |
| Vmpp | 38.9 V | 38.8 V | 0.3% |
| Isc | 14.76 A | 14.65 A | 0.7% |
| Impp | 13.89 A | 13.79 A | 0.7% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
545 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.9 V | 47 V | 0.2% |
| Vmpp | 38.9 V | 39 V | 0.3% |
| Isc | 14.76 A | 14.86 A | 0.7% |
| Impp | 13.89 A | 13.98 A | 0.6% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
530 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.9 V | 46.7 V | 0.4% |
| Vmpp | 38.9 V | 38.8 V | 0.3% |
| Isc | 14.76 A | 14.56 A | 1.4% |
| Impp | 13.89 A | 13.67 A | 1.6% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
550 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.9 V | 47.1 V | 0.4% |
| Vmpp | 38.9 V | 39.1 V | 0.5% |
| Isc | 14.76 A | 14.97 A | 1.4% |
| Impp | 13.89 A | 14.07 A | 1.3% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
555 W
PERC| Parameter | Original | Replacement | Deviation |
|---|---|---|---|
| Voc | 46.9 V | 47.2 V | 0.6% |
| Vmpp | 38.9 V | 39.2 V | 0.8% |
| Isc | 14.76 A | 15.07 A | 2.1% |
| Impp | 13.89 A | 14.17 A | 2.0% |
| TcVoc | -0.27 %/°C | -0.27 %/°C | ±0.000 %/°C |
| TcPmax | -0.34 %/°C | -0.34 %/°C | ±0.000 %/°C |
String Compatibility Calculator
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How the Algorithm Works
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Voc
46.9 V
Vmpp
38.9 V
Isc
14.76 A
Impp
13.89 A
TcVoc
-0.27 %/°C
TcPmax
-0.34 %/°C
Pmax
540 W
Cells
345
Bifaciality
70%
Length
2384 mm
Width
1096 mm
Thickness
35 mm
Weight
32.5 kg
The RECOM RCM-540-SDMS1 is a 540 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 |
|---|---|---|---|
| 530 W | 46.7 V | 14.56 A | |
| 535 W | 46.8 V | 14.65 A | |
| 545 W | 47 V | 14.86 A | |
| 550 W | 47.1 V | 14.97 A | |
| 555 W | 47.2 V | 15.07 A |
The most critical specs to match are: cell count (must be exactly 345), Voc close to 46.9 V (within ±5%), and temperature coefficient TcVoc close to -0.27%/°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 RECOM RCM-540-SDMS1.