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 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.
Reliable
● Natural cooling
● Free fuse design
● Protected to IP65.
●
Eective design against ground subsidence: The AC terminal block can be
pulled down by up to 50 mm due to the pulling force.
Network Application
The SUN2000 applies to distributed grid-tied commercial PV systems and large-
scale grid-tied PV plants. Typically, a grid-tied PV system consists of the PV string,
SUN2000, AC combiner box, and step-up transformer.
Figure 2-4 Network application
(A) PV string
(B) SUN2000 (C) AC combiner box
(D) Step-up transformer (E) Power grid -
The SUN2000 is powered by a dedicated power transformer instead of connecting to low
voltage overhead power lines.
Supported Power Grid
The SUN2000 supports the IT power grid.
SUN2000-(90KTL, 95KTL, 100KTL, 105KTL) Series
User Manual
2 Overview
Issue 11 (2020-08-30) Copyright © Huawei Technologies Co., Ltd. 10
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