최신 Huawei-certification H20-681-ENU 무료샘플문제:

1. Islanding Effect refers to the effect that the grid-connected photovoltaic power generation system still maintains the power supply status to the adjacent part of the grid when the power grid suddenly loses pressure.

A) True
B) False

2. In the requirements for safe construction work, which of the requirements for on-site management are correct?

A) Special operators (such as climbing, welders, etc.) must hold a certificate of employment
B) Safety production education for construction workers before starting work
C) Construction of hazardous areas should be equipped with necessary protective equipment and safe working tools
D) Specific engineering projects must have specific safety production management regulations

3. 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) Disconnect DC input switch, AC output switch, close after 5 minutes
C) Try to upgrade the software to solve
D) Check if the AC line has insufficient insulation to the ground.

4. When adding an environmental detector via Huawei SmartLogger2000, it prompts failed. The possible causes are (). (Multiple Choice)

A) The environmental monitor's baud rate is inconsistent with the SmartLogger communication parameter settings.
B) The environmental detector is not powered
C) SmartLogger Ethernet parameter settings are incorrect
D) SmartLogger communication parameter setting is incorrect

5. Log in to the SUN2000 APP as a "general user" and you cannot perform the "Inverter Command Settings", "Inverter Upgrade", and "Log Management" operations.

A) True
B) False

질문과 대답: