Sungrow SG320HX, Руководство пользователя

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– Surge protective devices (SPD) for the AC combiner box and on the LV side of the
transformer are recommended to be connected in the "3+1" manner, as shown in the
figure below. The Min. continuous operating voltages of M1 - M4 are 680 Vac.
– The string serial communication box EMU200 requires an external power supply of
220 Vac, so a power supply port and an input port (including switches) should be re-
served in the LV power distribution room of the boost transformer.
5.6.2 Requirements for OT/DT Terminal
OT/DT terminals (not included in the delivery scope) are required for fixing AC cables to the
terminal block. Purchase the OT/DT terminals according to the following requirements.
OT/DT Terminals of Phase Wire (One Wire per Phase with Multi-core Cable)
• Specification: M12
OT/DT Terminals of Phase Wire (Two Wires per Phase with Multi-core Cable)
• Specification: M12
User Manual 5 Electrical Connection