Huawei SUN2000-3.8KTL-USL0 Quick Manual page 8

2. Connect the AC output power cable for critical load.
Installing the PV Input Power Cable
4.4
• Ensure that the PV module output is well insulated to ground.
•
Ensure that the PV input power cable is correctly connected and that the voltage does not
exceed 500 V DC. Otherwise, the SUN2000 will be damaged.
•
The output wiring terminals of PV modules or connected optimizers may have hazardous
voltages. Touching the terminals may cause electric shock. Before connecting PV input power
cables, ensure that the DC SWITCH of the SUN2000 is OFF and that the DC input terminals of
the SUN2000 have no voltage.
NOTICE
•
The ground cable at the PV side (GND) is connected to the ground point on the PV module
support, ensuring reliable connection between the PV module frame and the SUN2000 ground
point.
•
Ensure that the positive and negative cables of PV strings are connected to the PV positive (+)
and negative (–) terminals respectively.
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