JA Solar's 395W photovoltaic panel typically operates with an open-circuit voltage (Voc) ranging between 40-45 volts and a maximum power voltage (Vmp) around 32-38 volts under standard test conditions (STC). These specifications may vary slightly depending on the specific product series and cell configuration, such as whether it uses monocrystalline PERC cells or bifacial technology.
For precise voltage parameters:
1. Check the technical datasheet of JA Solar's JAM60S20-395/MR model (a typical 395W product)
2. Consider temperature coefficients - voltage decreases by approximately 0.3%/°C as panel temperature rises
3. System designers should account for voltage compatibility with inverters (most modern inverters accept 600-1500V DC inputs)
Pro tip: Always verify the "Vmpp" (Voltage at Maximum Power Point) when designing solar arrays, as this determines how many panels can be connected in series without exceeding inverter voltage limits. A typical 395W panel's Vmpp of ~34V would allow 17-18 panels in series for a 600V system.
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