● Smart PV module self-learning: Automatically detects PV module failures,
helping rectify faults. Optimizes the working mode to obtain the optimal
working mode of the system.
● Smart air cooling: Adjusts the fan speed based on the ambient temperature
and load to ensure the service life of fans and avoid frequent maintenance.
● MBUS networking: Uses the existing power line for communication and does
not require additional communications cable, which reduces the construction
and maintenance costs and improves communication reliability and
eciency.
● Smart I-V curve diagnosis: Implements I-V scanning and health diagnosis for
PV strings. In this way, potential risks and faults can be detected in time,
improving the plant operation & maintenance (O&M) quality.
Safe
● Embedded DC and AC surge protection devices (SPDs): all-dimensional surge
protection
● Embedded residual current monitoring unit: Immediately disconnects from the
power grid upon detecting that the residual current exceeds the threshold.
Networking
SUN2000 solar inverters apply to grid-tied systems of large-scale PV plants and
commercial distributed grid-tied systems. Typically, a grid-tied PV system consists
of the PV string, solar inverter, AC combiner box, and transformer station.
Figure 2-3 Networking
(1) PV string
(2) SUN2000 (3) AC combiner box
(4) Transformer station (5) Power grid -
In a non-low-voltage grid-connected scenario, the SUN2000-115KTL-M2, SUN2000-100KTL-
M2, and SUN2000-100KTL-INM2 need to connect to an isolation transformer and avoid
overhead cabling.
Supported Power Grids
SUN2000-115KTL-M2, SUN2000-110KTL-M2, SUN2000-100KTL-M2, and
SUN2000-100KTL-INM2 solar inverters support the TN-S, TN-C, TN-C-S, TT, and IT
power grids.
SUN2000-(100KTL, 110KTL, 115KTL)-M2
User Manual 2 Overview
Issue 02 (2022-06-30) Copyright © Huawei Technologies Co., Ltd. 9
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