CETC CETC-375M/120, Руководство по установке, Страница: 23 / 27

光伏组件安装手册
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盒中集成了旁路二极管。二极管不容易坏。
In systems with more than two modules in series, when one part of the module is shielded
and the other part is exposed to sunlight, excessive reverse current can flow through the partially
or completely shielded cell, causing the cell to overheat and even damage the module. The use of
by-pass diodes in the assembly protects the assembly from this excessive reverse current. All
modules rated greater than 55 w have bypass diodes integrated in the junction box. Diodes don't
break easily.

在调试或维修太阳能系统时要保护自己免遭电击。
Protect yourself from electric shocks while tuning or repairing a solar system.
9.2 调试
Debug
使用之前测试系统的所有电气和电子部件，并遵守随部件和设备提供的说明指导书。
Use all electrical and electronic modules of the previously tested system and follow the
instructions provided with the modules and equipment.
 串联组件连接到系统前的测试
Lends a test before connecting a tandem module to the system
使用数字万用表（推荐 fluke 系列）检查串联组件的开路电压。测量值应等于单个组件开路电
压的总和。您将在所用类型组件的技术说明书中找到额定电压。如果测量值比预期值低很多，请按
照下文中“低电压故障排除”中的说明进行处理。
Use a digital multimeter (Fluke series is recommended) to check the open circuit voltage of
the series modules. The measured value shall be equal to the sum of the open circuit voltages of
the individual modules. You will find the rated voltage in the technical specification for the type of
module used. If the measured value is much lower than the expected value, follow the instructions
in "Troubleshooting low Voltage" below to resolve the problem.
 检查每个串联电路的短路电流
Check the short-circuit current of each series circuit
可以通过将数字万用表（推荐 fluke 系列）连接到串联组件的两端直接测量，或使用 PV 灯等
负载进行粗测。注意，电流表的额定刻度或负载的额定电流应该大于串联组件额定短路电流的 1.25