Working Principles; Circuit Diagram - Huawei SUN2000-100KTL Series User Manual

SUN2000-(100KTL, 110KTL, 125KTL) Series
User Manual
No. Indicator

2.5 Working Principles

2.5.1 Circuit Diagram

The solar inverter receives inputs from 20 PV strings. The inputs are grouped into
10 MPPT circuits inside the solar inverter to track the maximum power point of
the PV strings. The DC power is then converted into three-phase AC power
through an inverter circuit. Surge protection is supported on both the DC and AC
sides.
Issue 07 (2020-09-15)
Status (Blinking Fast: On for 0.2s
and then Off for 0.2s; Blinking
Slowly: On for 1s and then Off for
1s)
Local
maintenance
status
NO TE
● The PV connection indicator and the grid connection indicator preferentially indicate
environmental faults.
● Local maintenance refers to operations performed after a USB flash drive, a WLAN
module, a Bluetooth module, or a USB data cable is inserted into the USB port of the
solar inverter. For example, local maintenance includes data import and export using a
USB flash drive, and connecting to the SUN2000 app over a WLAN module, a Bluetooth
module, or a USB data cable.
● If an alarm is generated during local maintenance, the alarm/maintenance indicator
shows the local maintenance state first. After the USB flash drive, WLAN module,
Bluetooth module, or USB data cable is removed, the indicator shows the alarm state.
Copyright © Huawei Technologies Co., Ltd.
Description
Blinking red fast A minor alarm is generated.
Blinking red A warning alarm is generated.
slowly
Steady green Local maintenance succeeds.
Blinking green Local maintenance fails.
fast
Blinking green In local maintenance or shuts
slowly down over a command.
2 Overview
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