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Huawei Certified Field Specialist -Smart PV Controller Sample Questions:

1. When the SUN2000 inverter has an alarm, the alarm ID is 400-21 (system failure - grid relay failure), which of the following troubleshooting suggestions are correct? (Multiple choice)

A) Disconnect DC input switch, AC output switch, close after 5 minutes
B) Try to upgrade the software to solve
C) Check if the AC line has insufficient insulation to the ground.
D) If the above method still cannot be restored, replace the whole machine.

2. In the DC 1000V PV system application scenario, the output voltage range of Huawei PID module is ().

A) 50-500V DC
B) 0-550V DC
C) 50-800V DC
D) 0-800V DC

3. Regarding the input current detection circuit of Huawei SUN2000 inverter, which of the following statement is correct?

A) Monitor the input current of each string, and alarm when the string is working abnormally.
B) The input current detection circuit is inaccurate to a single string according to the MPPT detection.
C) Inverter input positive and negative poles cause the input current detection circuit to be damaged, and the inverter will be irreparable.
D) After the DC switch is closed, the input current detection circuit starts to work.

4. The rated output current of Huawei PID module is ____.

A) 1A AC
B) 1A DC
C) 0.5A DC
D) 0.5A AC

5. The power grid form supported by Huawei SUN2000 inverter is () (Multiple choice)

A) TN-C
B) IT
C) TT
D) TN-S

Solutions: