Powering On The System - Huawei SUN2000 Quick Manual

6

Powering On the System

Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter to
check that the AC voltage is within the operating voltage range of the SUN2000.
1. Turn on the AC switch between the SUN2000 and the power grid.
2. Ensure that the DC switches at the SUN2000 bottom are ON.
3. (Optional) Measure the temperatures at the joints between DC terminals and connectors using a
point-test thermometer.
To ensure that the DC terminals are in good contact, check the temperatures at the joints between
DC terminals and connectors after the SUN2000 has been running for a period of time. Ensure
that the temperature rise does not exceed 40 ° C.
4. Observe the indicators to check the SUN2000 operating status.
Indicator
PV connection
indicator
Grid-tied indicator
Communications
indicator
Alarm/Maintenance
indicator
Status
Green on
Green off
Green on
Green off
Blinking green (on for 0.5s and then
off for 0.5s)
Green off
Alarm status Blinking red at long
intervals (on for 1s and
then off for 4s).
Blinking red at short
intervals (on for 0.5s
and then off for 0.5s).
Steady red
Local Blinking green at long
maintenance intervals (on for 1s and
status then off for 1s)
Blinking green at short
intervals (on for 0.125s
and then off for 0.125s)
Steady green
Meaning
At least one PV string is properly
connected, and the DC input voltage of
the corresponding MPPT circuit is
higher than or equal to 200 V.
The SUN2000 disconnects from all PV
strings, or the DC input voltage of each
MPPT circuit is less than 200 V.
The SUN2000 has connected to the
power grid.
The SUN2000 has not connected to the
power grid.
The SUN2000 receives communications
data normally.
The SUN2000 receives no
communications data for 10s.
A warning alarm is generated.
A minor alarm is generated.
A major alarm is generated.
Local maintenance is in progress.
Local maintenance fails.
Local maintenance succeeds.
12