Huawei SUN2000-90KTL Series User Manual

Parameter Description
MBUS communication For inverters that support RS485 communication and MBUS
communication, you are advised to set this parameter to Disable
to reduce power consumption.
Delay upgrade This parameter is mainly used in the upgrade scenarios where the
PV power supply is disconnected at night due to no sunlight or
unstable at dawn or dusk due to poor sunlight.
After the inverter starts to upgrade, if Delay upgrade is set to
Enable, the upgrade package is loaded rst. After the PV power
supply recovers and the activation conditions are met, the
inverter automatically activates the upgrade.
RS485-2 communication If this parameter is set to Enable, the RS485-2 port can be used.
If the port is not used, you are advised to set this parameter to
Disable to reduce power consumption.
String monitor The inverter monitors PV strings in real time. If any PV string is
abnormal (such as the PV string is shaded or the electric energy
yield decreases), the inverter generates an alarm to remind
maintenance personnel to maintain the PV string in a timely
manner.
If PV strings are often shaded, you are advised to set String
monitor to Disable to prevent false alarms.
String detection reference
asymmetric coecient
Species the threshold for determining PV string exception. The
false alarms caused by xed shadow shading can be controlled by
changing this parameter.
This parameter is displayed when String monitor is set to
Enable.
String detection starting
power percentage (%)
Species the threshold for starting PV string exception detection.
The false alarms caused by xed shadow shading can be
controlled by changing this parameter.
This parameter is displayed when String monitor is set to
Enable.
Duration for determining
short-time grid disconnection
(ms)
The standards of certain countries and regions require that the
inverter should not disconnect from the power grid if the power
grid experiences a short-time failure. After the fault is rectied,
the inverter output power needs to be quickly restored.
----End
7.1.5 Operations Related to the Special User
Ensure that the DC side of the SUN2000 is energized before setting grid
parameters, protection parameters, feature parameters, and grid adjustment
parameters.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
7 Man-Machine Interactions
Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 78

Huawei SUN2000-90KTL Series Specifications

General

Brand	Huawei
Model	SUN2000-90KTL Series
Category	Inverter
Language	English