Powering On The System - Huawei SUN2000L User Manual

SUN2000L-(2KTL-5KTL)
User Manual

6.2 Powering On the System

Prerequisites
Before turning on the AC switch between the SUN2000L and the power grid, check that the
AC voltage on the power grid side of the AC switch is within the specified range.



Procedure
Step 1 If a battery connects to the battery port, turn off the battery Auxiliary Power ON/OFF switch,
and then turn off the battery Circuit Breaker switch.
Step 2 Turn on the AC switch between the SUN2000L and the power grid.
Step 3 Turn on the DC switch between the PV string and the SUN2000L if there is any.
Step 4 Turn on the DC switch at the bottom of the SUN2000L.
Step 5 Set the SUN2000L parameters on the app. For details, see
FusionHome
Step 6 (Optional) Measure the temperatures at DC terminals and battery terminals using a point-test
thermometer.
Under normal operation conditions of the SUN2000L, the temperature rise at DC terminals
should remain below 30° C at all time.
Step 7 Observe the LEDs to check the SUN2000L operating status.
Issue 02 (2017-12-12)
If the DC is on and the AC is off, the SUN2000L reports a Grid Failure alarm. The
SUN2000L starts normally only after the fault is rectified.
If the AC is on and the battery is off, the SUN2000L reports a Battery Abnormal alarm.
If the SUN2000L is connected to the battery, after turning on the AC switch:
If the DC switch is turned on within 1 minute, the SUN2000L will run properly in
grid-tied mode.
If the DC switch is not turned on within 1 minute, the SUN2000L will enter the nighttime
grid-tied mode. Then, after the DC switch is turned on, the SUN2000L will shut down and
then restart to run in grid-tied mode.
App.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6 System Commissioning
7 Operations on the Local
57