Huawei H20-681-ENU 問題集

質問 1：
Currently used MPPT methods are () (Multiple choice)
A. Gap scanning method
B. Conductance increment method
C. Disturbance observation method
D. Constant voltage method
E. Short circuit current method
正解：A,B,C,D,E

質問 2：
The fiber network fails in the fiber ring network scenario. What is the possible reason? (Multiple choice)
A. Optical module selection is error
B. Fiber jumper reverse connection
C. Fiber cable interruption
D. Optical module failure
正解：A,B,C,D

質問 3：
The password for logging in to the Huawei SUN2000 inverter through the SUN2000 APP is ().
A. 00000a
B. Huawei
C. 000000
D. 123456
正解：A

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

質問 5：
In the Huawei eLTE wireless networking PV application scenario, the hardware of the wireless transmission system mainly includes (). (Multiple Choice)
A. eRRU
B. Core network
C. eBBU
D. Integration station
正解：A,B,C

質問 6：
The problems faced by the agricultural and photovoltaic complementary photovoltaic power station program are _____. (Multiple choice)
A. How to prevent the communication cable from being easily cut off
B. How to overcome the problem of sub-array dispersion and irregularity
C. How to reduce the waste of cultivated land resources
D. How to prevent fire, electric shock and other safety accidents
正解：A,B,C,D

質問 7：
NetEco1000S system monitoring interface display content includes ____. (Multiple choice)
A. Active power curve
B. Total power generation
C. Power station revenue
D. Inverter operating parameters
E. CO2 emission reduction
F. Power generation on the day
正解：A,B,C,D,E,F

質問 8：
On-site problem management needs to develop a project problem tracking table. The tracking table is divided into an internal problem tracking table and a customer problem tracking table. The customer problem tracking table can be recorded according to the service engineer content, and does not need to be completely consistent with the customer's maintenance, but the internal problem tracking table should be in the same state as the company support team.
A. False
B. True
正解：A