Huawei SUN2000-75KTL Series User Manual page 19

SUN2000-(75KTL, 100KTL, 110KTL, 125KTL) Series
User Manual
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Safe
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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 2-4 Networking
(1) PV string
(4) Transformer station
Supported Power Grids
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Issue 11 (2021-11-10)
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 efficiency.
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.
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.
NO TE
● The SUN2000-125KTL-M0 is powered by a dedicated power transformer instead of
connecting to low-voltage overhead power lines.
● In a non-low-voltage grid-connected scenario, the SUN2000-100KTL-M1,
SUN2000-100KTL-INM0 and SUN2000-75KTL-M1 need to connect to an isolation
transformer and avoid overhead cabling.
SUN2000-110KTL-M0, SUN2000-100KTL-M0, SUN2000-100KTL-M1,
SUN2000-100KTL-INM0 and SUN2000-75KTL-M1 solar inverters support the
TN-S, TN-C, TN-C-S, TT, and IT power grids.
The SUN2000-125KTL-M0 supports only the IT power grid.
Copyright © Huawei Technologies Co., Ltd.
(2) SUN2000
(5) Power grid
2 Overview
(3) AC combiner box
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