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Huawei H20-681-ENU Exam Syllabus Topics:

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

2. Huawei SmartLogger cannot find Huawei PID module when debugging, what is the possible reason? (Multiple choice)

A) SmartLogger with PID version of the module does not match
B) The PID module communication parameter setting in SmartLogger is incorrect.
C) The 85485 address of the PID module conflicts with the address of other devices connected to the SmartLogger
D) The communication line between PID module and SmartLogger is not connected.

3. Before logging in to the NetEco1000S system, you need to enable the NetEco1000S service. Otherwise, users cannot log in to the NetEco1000S system.

A) False
B) True

4. Huawei SUN2000L household inverter cooling method is _____.

A) Natural heat dissipation
B) Air cooling + natural heat dissipation
C) Water cooling
D) Air cooling

5. The principle of maximum power point tracking using Boost circuit is to adjust the switching tube duty cycle so that the impedance fed back to the input side of the load is equal to the maximum power point impedance of the solar cell, also called the impedance matching principle of the maximum power output. .

A) False
B) True

Solutions: