Installing Dc Input Power Cables - Huawei SUN2000-55KTL Series Quick Manual

5. Route the AC output power cable through the AC OUTPUT connector at the bottom of
the enclosure.
6. Connect the AC output power cable to the terminal block, and then tighten the nut using
a torque wrench that has an extension rod.
•
Ensure that AC terminations provide firm and solid electrical connections. Failing to do so may
cause SUN2000 malfunction and damage to its components, even start thermal events .
•
If the AC output power cables are subject to a pulling force because the inverter is not installed
stably, ensure that the last cable that bears the stress is the PE cable.
a. Three-core cable (excluding the ground cable)
7. Tighten the thread-lock sealing nut.
8. Clear debris from the maintenance compartment.
4.4

Installing DC Input Power Cables

Selecting DC Input Terminals
NOTE
The SUN2000 provides two DC switches,
named as, DC SWITCH 1 and DC SWITCH 2.
DC SWITCH 1 controls the first to fourth sets of
DC input terminals, whereas DC SWITCH 2
controls the fifth to eighth sets of DC input
terminals.
b. Four-core cable (including the ground cable)
Number
SUN2000
of Inputs
1 Connects to set 1.
2 Connects to routes 1 and 5.
3 Connects to routes 1, 3, and 5.
4 Connects to routes 1, 3, 5, and 7.
5 Connects to routes 1, 2, 3, 5, and 7.
Connects to routes 1, 2, 3, 5, 6, and
6
7.
Connects to routes 1, 2, 3, 4, 5, 6,
7
and 7.
Connects to routes 1, 2, 3, 4, 5, 6, 7,
8
and 8.
9