Huawei SUN2000-17KTL - 2.5 Working Principles

SUN2000 (8KTL-28KTL)
User Manual
2 Overview
Issue 12 (2019-06-30)
Copyright © Huawei Technologies Co., Ltd.
13
Indicator
State
Meaning
Communications
indicator
Blinking green fast (on for
0.5s and then off for 0.5s
for three times at an
interval of 10s)
The SUN2000 is communicating
properly.
Off
No communication is in progress
or the communication is
abnormal.
Alarm indicator
Steady red
The SUN2000 generates a major
alarm. For details, see 7.2.2
Viewing Alarm Records.
Blinking red at short
intervals (on for 0.5s and
then off for 0.5s)
The SUN2000 generates a minor
alarm. For details, see 7.2.2
Viewing Alarm Records.
Blinking red at long
intervals (on for 1s and
then off for 4s)
The SUN2000 has generated a
warning. For details, see 7.2.2
Viewing Alarm Records.
Buttons
Table 2-5 describes the four buttons on the SUN2000 monitoring panel.
Table 2-5 Button description
Button
Name
ESC
Escape
Up
Down
Confirm
The backlight lasts for 60s after any button is pressed.
2.5 Working Principles
This section describes the circuit diagrams and working modes of the SUN2000.
Conceptual Diagrams

The SUN2000-15KTL, SUN2000-17KTL, SUN2000-20KTL, SUN2000-23KTL, and
SUN2000-28KTL receive inputs from six PV strings. The inputs are then grouped into