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Huawei H20-681-ENU Exam Syllabus Topics:

Huawei Certified Field Specialist -Smart PV Controller Sample Questions:

1. When the PV sub-array adopts Huawei PLC communication networking, the knife-melting switch needs to be added between the box-changing busbar and the Huawei PL CCO module. The rated current of the fuse cannot be less than ____.

A) 6
B) 10
C) 15
D) 5

2. The inverter deleted by the NetEco1000S system is automatically restored again, and you can try to delete it several times.

A) False
B) True

3. When the Huawei SUN2000 inverter is installed, the DC and AC voltages are normal but cannot be connected to the grid. The alarm indicator is off. The following statement which is correct? (Multiple selection)

A) Check if the grid standard code parameter setting is correct
B) Log in to the inverter through SUN2000APP to check whether the AC and DC running data is normal.
C) The alarm indicator is off, indicating that the inverter is not faulty.
D) Export the log and request technical support from the manufacturer.

4. During the upgrade of the SUN2000 inverter software, disconnecting the DC input switch of the inverter may cause the inverter to fail to upgrade. When the inverter DC switch is closed again, the "software version mismatch" alarm may occur and the grid cannot be generated. Need to be re-upgraded to resolve.

A) False
B) True

5. When the Huawei intelligent sub-array controller SmartACU2000B is powered on, the three-phase power main switch in the cabinet cannot be closed. The possible reason is () (Multiple choice)

A) There is a short circuit or grounding problem in the pre-stage box input line
B) The fuse in the communication cabinet is blown
C) Switch back-end loop failure
D) Three-phase power switch failure

Solutions: