Sungrow SG125HV-30, Руководство пользователя

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5 Electrical Connection User Manual
44

a b
c
Fig. 5-5 Dimensions of Terminal (Single-hole terminal)

(Double-hole terminal) Dimensions: a
≤
43mm / 10.5mm
≤
b
≤
12.5mm / c
≤
16mm / d=25.4mm
a b
c d
Fig. 5-6 Dimensions of Terminal (Double-hole terminal)
5.3.3 PV Input Connection
During the PV string input connection, the DC current of each string
should be gathered together by a combiner box (or other combining
devices) and then connected to the inverter.
DC Cable Requirements
Select DC cables according to the following factors:

The maximum operating temperature of the cable should no less than 90
°
C(+194
°
F).

The current rating of the cable should be selected in accordance with the
maximum short circuit current of the PV arrays connected to the inverter.

The voltage rating of the cable should no less than 1500V.

The Conductor type can be copper wire or aluminum wire.

If the aluminum cable is selected, in order to ensure a reliable electrical
connection, use the the copper and aluminum conversion terminal to avoid
direct contact between the DC copper bar and the aluminum cable.