Huawei SUN 2000 Series User Manual page 44

SUN2000-4.95KTL-JPL0
User Manual
Figure 5-11 Installing a DC input power cable
If polarity of the DC input power cables is reversed, do not turn off the DC switch
immediately or unplug positive and negative connectors. Failing to do so may cause the
device damage, which is not covered under any warranty. Wait until the solar irradiance
declines at night and the PV string current drops below 0.5 A. Then, turn off the DC switch,
remove the positive and negative connectors, and rectify the connection of the DC input
power cables.
----End
Follow-up Procedure
Before removing the positive and negative connectors, ensure that the DC SWITCH is set to
OFF.
To remove the positive and negative connectors from the solar inverter, insert an open-end
wrench into the notch and press the wrench with an appropriate force.
Figure 5-12 Removing a DC connector
Issue 03 (2020-06-03) Copyright © Huawei Technologies Co., Ltd.
5 Electrical Connections
38