No. Component Description Source
D Power Meter Implements power control at the grid-
tied point in low voltage scenarios
using a power meter.
Prepared by the
customer
E Support tracking system Adjusts the angle of the supports. Prepared by the
customer
F Fuse/Circuit breaker The tracking system should be
equipped with an overcurrent
protection device or component. The
power cable between the device or
component and the wiring terminal
should be no longer than 2.5 m.
Therefore, a fuse or a circuit breaker is
recommended.
● Installed between the solar inverter
and tracking control box
● Fuse
specications: rated voltage ≥
500 V; rated current: 16 A;
protection: gG
● Circuit breaker
specications: rated
voltage ≥ 500 V; rated current: 16 A;
tripping: C
Prepared by the
customer
G AC switch ● Installed in the AC combiner box
● Recommended: a three-phase AC
circuit breaker with a rated voltage
greater than or equal to 500 V AC
and a rated current of 250 A
Prepared by the
customer
H SDongle The solar inverter communicates with
the management system through the
SDongle.
Purchased from
Huawei
The solar inverter has an RCMU inside. Its external AC switch should be a three-
phase circuit breaker or other AC load circuit breakers to safely disconnect the
solar inverter from the power grid.
SUN2000-(100KTL, 110KTL, 125KTL) Series
User Manual 5 Electrical Connections
Issue 07 (2020-09-15) Copyright © Huawei Technologies Co., Ltd. 44
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