No. Component Description Source
B AC switch To ensure that the inverter can be
safely disconnected from the power
grid when an exception occurs,
connect an AC switch to the AC side
of the inverter. Select an
appropriate AC switch in
accordance with local industry
standards and regulations. Huawei
recommends the following switch
specications:
Recommended: a three-phase AC
circuit breaker with a rated voltage
greater than or equal to 500 V AC
and a rated current of:
● 63 A (SUN2000-29.9KTL/30KTL-
M3)
● 80 A (SUN2000-20KTL-M3)
● 100 A (SUN2000-36KTL/40KTL-
M3)
Prepared by users
C Power
meter
[1]
The SUN2000 can connect to the
DTSU666-H, DTSU666-HW, and
YDS60-80 power meter.
[2]
Purchased from
Huawei
The following third-party power
meters are supported:
ABB-A44, Janitza-UMG604, Janitza-
UMG103-CBM, GAVAZZI-EM340-
DIN AV2 3 X S1 X, Algodue-
UPM209, and WEG-MMW03-
M22CH
When the WEG-MMW03-M22CH
power meter is connected, set Baud
rate to 9600.
Prepared by users
D SUN2000 Select a proper model as required. Purchased from
Huawei
E SmartLogger SmartLogger3000 Purchased from
Huawei
F Environment
al monitoring
instrument
(EMI)
When the SmartLogger is used, the
EMI can be directly connected to
the SmartLogger or connected to
the last solar inverter cascaded over
RS485.
Prepared by users
G Smart
Dongle
Select a proper model as required. Purchased from
Huawei
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 5 Electrical Connections
Issue 11 (2023-01-10) Copyright © Huawei Technologies Co., Ltd. 35
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