4.1。电线说明......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 18-4.2。连接PGND电缆..................................................................................- 18-4.3。PV连接.................................................................................................................- 20-4.4。电池连接........................................................................................................................................................................................................................................- 21-4.5。Load connection................................................................... - 22 - 4.6.Grid connection.................................................................... - 24 - 4.7.外部通信接口....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................按钮和指示灯.....................................................................................................................................................................................................................................................................................................................................................》 35-