Huawei SUN2000-4.95KTL-JPL0 Quick Manual page 7

4. Install DC input power cables for SUN2000-4.95KTL-NHL2.
•
Ensure that the PV module output is well insulated to ground.
• Use the positive and negative Staubli MC4 metal terminals and DC connectors supplied with
the SUN2000. Using incompatible positive and negative metal terminals and DC connectors
may result in serious consequences. The caused device damage is not covered under warranty.
• The DC input voltage of the SUN2000 cannot exceed the maximum input voltage under any
condition.
•
Before installing DC input power cables, label the cable polarities to ensure correct cable
connections.
• If the polarities of the DC input power cables are reversed, do not operate the DC switch or
the positive/negative connector immediately. Failing to do so may cause device damage,
which is not covered under warranty. Wait until the night when solar irradiance declines and
the PV string current drops to below 0.5 A. Then set the DC switch to OFF, remove the
positive and negative connectors, and correct the polarities of the DC input power cables.
Assembling DC connectors
Positive metal
terminal
Negative metal
terminal
Ensure that cable
polarities are
correct.
Installing DC Input Power Cables
If the original DC input power cables are not long enough, add DC input extension cables.
DC input terminals
PV-CZM-19100 (Staubli)
Ensure that the cables
cannot be pulled out
after being crimped.
Use the wrench
shown in the figure
to tighten the locking
nut. When the
wrench slips during
the tightening, the
locking nut has been
tightened.
6
Positive connector
Negative
connector
Click
PV-MS-HZ
open-end
wrench (Staubli)