Huawei SUN2000-100KTL Series

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● 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 eciency.

● 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 2-4 Networking

(1) PV string

(2) SUN2000 (3) AC combiner box

(4) Transformer station (5) Power grid

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 and

SUN2000-100KTL-INM0 need to connect to an isolation transformer and avoid overhead

cabling.

Supported Power Grids

● SUN2000-110KTL-M0, SUN2000-100KTL-M0, SUN2000-100KTL-M1 and

SUN2000-100KTL-INM0 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.

SUN2000-(100KTL, 110KTL, 125KTL) Series

User Manual 2 Overview

Huawei SUN2000-100KTL Series - Page 18