组件串并联配置计算器

计算规则：

组串电压 = Vmp × 串联数　　并联电流 = Imp × 并联数

Voc 合计 = Voc × 串联数（须 ≤ 系统电压上限）　　最大电路电流 = Isc × 1.25 × 并联数

String voltage = Vmp × series count; parallel current = Imp × parallel count; total Voc = Voc × series count (must not exceed the system voltage limit); max circuit current = Isc × 1.25 × parallel count.

组串保险丝提示：并联数 ≥ 3 时，相邻组串的故障反向电流可能超过组件熔断耐受，通常需要每串加装保险丝（以组件串联保险额定为准）。

With 3 or more parallel strings, module series fuses are typically required for reverse-current protection.

免责 / Disclaimer：工程估算，低温 Voc 校正与最终配置以厂家温度系数与 NEC 690 为准。

Engineering estimates only — verify cold-temperature Voc per manufacturer coefficients and NEC 690.