Verifying Installation; Powering On The System - Huawei SUN2000-90KTL Quick Manual

6

Verifying Installation

No. Acceptance Criteria
1 The SUN2000 is installed correctly and securely.
2 The DC switches and downstream AC switch are set to OFF.
3 All cables are connected correctly and securely.
4 Used cable glands are sealed and sealing nuts are tightened.
5 Unused terminals and ports are locked by watertight caps.
The installation space is proper, and the installation environment is clean and tidy, without
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foreign matter.
7 The AC terminal cover is reinstalled.
8 The maintenance compartment door is closed and the door screws are tightened.
7

Powering On the System

NOTICE
Before turning on the AC switch between the SUN2000 and the power grid, check that the AC
voltage is within the specified range using a multimeter.
1. Turn on the AC switch between the SUN2000 and the power grid.
2. Turn the two DC switches at the bottom of the SUN2000 to the ON position.
3. Observe the LED indicators to check the SUN2000 operating status.
Indicator Status
PV connection Steady green
indicator
Off
Grid-tied Steady green
indicator
Off
Communications Blinking green
indicator
Off
Alarm/ Alarm status
Maintenance
indicator
Local
maintenance
status
The red indicator is blinking at
long intervals (on for 1s and
then off for 4s).
The red indicator is blinking at
short intervals (on for 0.5s and
then off for 0.5s).
Steady red
The green indicator is blinking
at long intervals (on for 1s and
then off for 1s).
The green indicator is blinking
at short intervals (on for
0.125s and then off for 0.125s).
Steady green
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Description
At least one PV string is properly
connected, and the DC input voltage
of the corresponding MPPT circuit is
at least 600 V.
The SUN2000 disconnects from all
PV strings, or the DC input voltage of
each MPPT circuit is less than 600 V.
The SUN2000 is in grid-tied mode.
The SUN2000 is not in grid-tied mode.
The SUN2000 receives data over
RS485 or PLC.
The SUN2000 has not received data
over RS485 or PLC for 10 seconds.
A warning alarm is generated.
A minor alarm is generated.
A major alarm is generated.
Local maintenance is in progress.
Local maintenance failed.
Local maintenance succeeded.