Installing The Dc Input Power Cable - Huawei SUN2000-90KTL Quick Manual

Installation Procedure (Using the Terminal Clamp)
After the AC output power cable is installed, seal the cable gland.
4.5

Installing the DC Input Power Cable

The SUN2000 provides 12 DC
input terminals, which are
controlled by its two DC switches.
DC SWITCH 1 controls DC input
terminals 1–6 (MPPT1–3) and DC
SWITCH 2 controls DC input
terminals 7–12 (MPPT4–6).
When DC inputs are not fully configured, the input terminals should meet the following requirements:
1. Evenly distribute DC input power cables on the DC input terminals controlled by the two DC switches.
2. Maximize the number of connected MPPT circuits.
For example, if the number of input routes is 6–11, the recommended DC input terminals are as follows:
Number of Terminal Selection
PV Strings
6 Connects to routes 2, 4, 6, 8, 10,
and 12.
8 Connects to routes 1, 2, 4, 6, 8, 9,
10, and 12.
10 Connects to routes 1, 2, 4, 6, 7, 8, 9,
10, 11, and 12.
Number of Terminal Selection
PV Strings
7 Connects to routes 2, 4, 6, 8, 9, 10,
and 12.
9 Connects to routes 1, 2, 4, 6, 7, 8, 9,
10, and 12.
11 Connects to routes 1, 2, 3, 4, 6, 7, 8, 9,
10, 11, and 12.
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