Huawei SUN2000 User Manual page 44

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
No. Component
E Battery switch
F Autotransformer
a
G Critical load
switch
H Home load
switch
Note a: There are two ground points (power grid side and user side) for residential power distribution in the
U.S. If the general loop to residence has a leakage protection device, there may be a risk of misprotection.
Connecting the SUN2000 may increase the risk. It is recommended that the leakage protection device be
relocated to a branch not involving the SUN2000.
Compatibility with RCD and RCM

The SUN2000 is equipped with a residual current monitoring unit (RCMU). Its external
AC switch (G and F in
circuit breaker to safely disconnect the SUN2000 from the power grid.

If the external AC switch can perform earth leakage protection, the rated leakage action
current should be greater than or equal to 100 mA.

If multiple SUN2000s connect to the general residual current device (RCD) through their
respective external AC switches, the rated leakage action current of the general RCD
should be greater than or equal to the number of SUN2000s multiplied by 100 mA.
A knife switch cannot be used as an AC switch.
Issue 01 (2018-05-21)
Description
Recommended: a DC circuit breaker with a rated voltage
greater than or equal to 600 V DC and a rated current of:
 15 A (SUN2000-3.8KTL/5KTL/7.6KTL-USL0)
 20 A (SUN2000-9KTL/10KTL/11.4KTL-USL0)
Recommended: HW-TX-5000
Recommended: a 2-pole AC circuit breaker with a rated
voltage greater than or equal to 240 V AC and a rated current
of:
 25 A (SUN2000-3.8KTL/5KTL/7.6KTL-USL0)
 30 A (SUN2000-9KTL/10KTL/11.4KTL-USL0)
Recommended: a 2-pole AC circuit breaker with a rated
voltage greater than or equal to 240 V AC and a rated current
of:

20 A (SUN2000-3.8KTL-USL0)

25 A (SUN2000-5KTL-USL0)
 40 A (SUN2000-7.6KTL-USL0)
 50 A (SUN2000-9KTL/10KTL-USL0)
 60 A (SUN2000-11.4KTL-USL0)
Figure 5-2) should be a 2-pole circuit breaker or any other AC load
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5 Electrical Connections
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