SMA WB 3000-21 Installation - Manual (Page 38)

6 Electrical Connection SMA Solar Technology AG
38 WB3-5TL-21-IA-en-10 Installation Manual
6. Connect the negative DC connectors of input A with
the negative DC connectors of input B.
6.4.3 Connecting the Rectifier
Requirements:
☐ The rear DC inputs on the inverter must be bridged.
☐ The positive connection cable of the rectifier must be fitted with a positive DC connector.
☐ The negative connection cable of the rectifier must be fitted with a negative DC connector.
Destruction of the inverter due to overvoltage
If the open-circuit voltage of the plant exceeds the maximum input voltage of the inverter, the inverter
can be destroyed by overvoltage.
• Install overvoltage protection between the inverter and the rectifier.
• If the open-circuit voltage of the plant exceeds the maximum input voltage of the inverter,
do not connect any DC cables to the inverter and check the design of the plant.