Huawei SUN2000-3.8KTL-USL0 User manual

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SUN2000-(3.8KTL-11.4KTL)-USL0
Power Compartment Quick Guide
Copyright © Huawei Technologies Co., Ltd. 2018. All rights reserved.
1Prerequisites
The power compartment of SUN2000-3.8KTL/5KTL/7.6KTL-USL0 and SUN2000-
9KTL/10KTL/11.4KTL-USL0 can be replaced in the same way. The following describes the
installation of the SUN2000-3.8KTL/5KTL/7.6KTL-USL0.
1. Powering off the system.
2. Before replacing the power compartment, ensure that the screw assemblies between the
maintenance compartment and mounting bracket have been tightened.
NOTE
Issue: 01
Part Number: 31509970
Date: 2018-06-22
NOTICE
•After the SUN2000 powers off, the remaining electricity and heat may still cause electric shock
and burns. After power-off, wait 5 minutes before servicing the SUN2000. Always wear
protective gloves when servicing the SUN2000.
•If the SUN2000 is connected to the battery, ensure that a shutdown command is sent from the
app. Power off the system after the SUN2000 has shut down. If no shutdown command is sent
from the app, the SUN2000 will shut down after the power grid is powered off. The SUN2000
will wait for 1 minute and restart (not grid-tied) and charge the battery, which poses an electrical
hazard when you turn off the DC switch.
•If Off-grid mode is set to Enable and Grid-tied/Off-grid mode switching is set to Automatic
switching for the SUN2000, ensure that a shutdown command is sent from the app and power
off the system only after the SUN2000 has shut down. If no shutdown command is sent from
the app, the SUN2000 will switch to the backup state after the power grid is powered off, which
poses an electrical hazard when you turn off the DC switch.
a. Send a shutdown command from the app.
b. Turn off the AC switch between the SUN2000 and the power grid.
c. Turn off the DC switch at the bottom of the SUN2000.
d. If a battery connects to the battery port of the SUN2000, power off the battery.

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4. Removing the USB cable (only for the 4G
model). 5. Removing the WLAN cable (only for the WLAN model).
2. Removing the 10-pin signal terminal. 3. Removing the 2-pin enable terminal.
1. Remove the maintenance compartment cover.
2Procedure
NOTE
Do not remove the 4G module when removing the USB cable.

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8. Remove the ground cable between the
power compartment and the maintenance
compartment.
9. Remove the external four M6 screws that
secure the power and maintenance
compartments.
6. Remove the DC cable.
7. Remove the AC cable and the fuse cable.
SUN2000-3.8KTL/5KTL/7.6KTL-US SUN2000-9KTL/10KTL/11.4KTL-USL0

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13.Reinstall the ground, fuse, AC and DC cables in sequence.
14.Reinstall the USB cable (only for the 4G model), or reinstall the WLAN cable (only for the WLAN
model).
15.Reinstall the 10-pin signal terminal and 2-pin enable terminal.
16.Reinstall the maintenance compartment cover.
12.After cables are routed, install the upper mounting kit of the new power compartment onto the
mounting bracket. Reinstall the four M6 screws to secure the power and maintenance
compartments.
10. Remove the power compartment. 11.Install the lower mounting kit of the new
power compartment onto the mounting
bracket and route cables.
HUAWEI TECHNOLOGIES CO., LTD.
Huawei Industrial Base, Bantian, Longgang
Shenzhen, People's Republic of China
Postal code: 518129
www.huawei.com