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Huawei H20-681-ENU Exam Syllabus Topics:

Huawei Certified Field Specialist -Smart PV Controller Sample Questions:

Question 1

In the photovoltaic application scenario where the agricultural light is complementary, Huawei's smart photovoltaic solution has which of the following advantages? (Multiple choice)

A. The inverter is installed close to the component to reduce the fire caused by DC arcing
B. Inverter bracket installation, no need to be equipped with inverter housing
C. DC-free fuse design reduces fire risk
D. High-precision leakage current detection protects personnel safety

Question 2

The Huawei PID module is mainly used to suppress the attenuation of the PV module output power due to the PID effect.

A. False
B. True

Question 3

The three-phase power line of Huawei's PID module can be directly connected to the low-voltage side busbar of the box, or it can be connected to the output of the isolation transformer built into the box.

A. False
B. True

Question 4

About Huawei's smart photovoltaic solution grounding system design, which of the following is correct? (Multiple Choice)

A. The inverter ground wire is connected to the component bracket, and the bracket is grounded.
B. Grounding flat steel is installed next to the cement column at each end of each bracket, and all grounded flat steel rings are welded back together after being buried in the ground;
C. Grounding flat steel coated with anti-rust paint, and annual derusting and painting maintenance;
D. The device is reliably grounded nearby

Question 5

MPPT - The working principle of maximum power point tracking is that the microprocessor periodically adjusts the duty ratio D of the PWM periodically to change the output current of the solar cell during a specified period, thereby causing the output voltage of the solar cell to change. The solar cell output voltage and output current are calculated, and the output power of the solar cell array is calculated, and then the position of the maximum power point is found according to the maximum power point tracking strategy.

A. False
B. True

Solutions: