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Huawei Certified Field Specialist -Smart PV Controller Sample Questions:

1. The Huawei PID module adjusts the photovoltaic panel PV+ or PV- voltage to earth by injecting voltage between N line and ground line of the isolation transformer, to realize the inhibition of photovoltaic panel PID effect.

A) True
B) False

2. Currently used MPPT methods are () (Multiple choice)

A) Gap scanning method
B) Disturbance observation method
C) Short circuit current method
D) Conductance increment method
E) Constant voltage method

3. When the Huawei SUN2000 inverter is alarmed and cannot be connected to the network, the alarm ID is 301-31. Which of the following measures can be taken to troubleshoot or try to solve?

A) Check DC insulation resistance and repair it.
B) Check the relative insulation resistance of AC C and repair it.
C) Check the relative insulation resistance of AC A and repair it.
D) Check the relative insulation resistance of AC E and repair it.

4. Huawei SmartLogger cannot communicate with background monitoring. What is the possible reason? (Multiple choice)

A) SmartLogger hardware failure
B) SmartLogger Ethernet parameter settings are incorrect.
C) Background monitoring parameter settings are incorrect.
D) Communication line interrupted between SmartLogger and background monitoring.

5. The incoming and outgoing line mode of Huawei's intelligent sub-array controller SmartACU2000B adopts up-out and down-in.

A) True
B) False

Solutions: