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Huawei Certified Field Specialist -Smart PV Controller Sample Questions:

1. The following description belongs to the characteristics of the fiber ring network (). (Multiple Choice)

A) Simple networking
B) Communication speed is fast
C) Communication distance is far
D) Simple deployment

2. Huawei SUN2000 inverter output isolation relay realizes the AC output of the inverter is isolated from the grid. When the inverter is faulty or the grid is faulty, the inverter is safely disconnected from the grid.

A) True
B) False

3. Huawei SUN2000L Household Inverter Alarm ID: 2062 (low insulation resistance), the possible reason is?

A) Inverter protection ground wiring is not reliable
B) Output L short circuit to PE
C) Photovoltaic string short circuit to PE
D) Output N short circuit to PE

4. When the Huawei SUN2000 inverter is alarmed and cannot be connected to the network, the alarm ID is 313-1 (low insulation resistance). Which of the following measures can be taken to troubleshoot or try to solve? (Multiple Choice)

A) Check the AC insulation resistance value
B) Use one test tool such as a shaker to detect the insulation resistance of each string one by one.
C) Connect to the DC string one by one and try to start troubleshooting the fault string.
D) Reduce the insulation resistance protection threshold in the setting

5. The Huawei SUN2000 inverter alarm indicator is lit green to indicate that the inverter has an alarm.

A) True
B) False

Solutions: