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 on the battery Auxiliary Power ON/OFF switch,
and then turn on 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 (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 6 Observe the LEDs to check the SUN2000L operating status.
Table 6-2 LED description
Type
Running
indication
Issue 06 (2020-03-19)
If the DC is on and the AC is off, the SUN2000L reports a Grid Loss 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 inverters are connected to batteries, turn on the DC switch within 1 minute after
turning on the AC switch. Otherwise, the inverters, connected to the power grid, will shut
down and start again.
Status
LED 1
Steady green
Blinking green at long
intervals (on for 1s
and then off for 1s)
Off
Copyright © Huawei Technologies Co., Ltd.
6 System Commissioning
LED 2
Steady green
Off
Blinking green at
long intervals (on for
1s and then off for
1s)
Meaning
N/A
The SUN2000L is
exporting power to
the power grid.
The DC is on and the
AC is off.
The DC is off and the
AC is on.
59