H20-681-ENU Online Training

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1. The NetEco1000S is an equipment-level monitoring software for inverters. It is mainly used in SUN2000, SUN8000 and third-party inverters.

True

False

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2. The device that cannot be upgraded by the NetEco1000S system for remote software is ()

SmartLogger 1000

SmartLogger 2000

SUN2000 inverter

Environmental monitor

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3. About the description of SmartLogger1000 and SmartLogger2000, which is incorrect? (Multiple Choice)

You can connect to SmartLogger via Bluetooth using SUN2000APP

The SmartLogger1000 supports up to 80 inverters, and the SmartLogger2000 supports up to 100 inverters.

Both SmartLogger1000 and SmartLogger2000 support PLC communication and optical fiber ring network

Both SmartL1000 and SmartLogger2000 can access third-party devices using the standard Modbus-RTU protocol.

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4. Huawei Smart Array Controller SmartACU2000B is recommended to be larger than () mm from the ground when installing.

200

300

500

600

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

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;

Grounding flat steel coated with anti-rust paint, and annual derusting and painting maintenance;

The inverter ground wire is connected to the component bracket, and the bracket is grounded.

The device is reliably grounded nearby

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6. When the debugging of the Huawei PLC communication network is started, which of the operation description of setting the anti-crosstalk is correct? (Multiple Choice)

Need to collect the ESN number of each square inverter through the SUN2000 APP and generate a .csv file.

Log in the SmartLogger WEBUI interface and import the produced .csv file into the PLC CCO module.

Log in to the SmartLogger WEBUI interface to enable the PLC CCO module operating parameters anti-crosstalk.

Log in to the SmartLogger WEBUI interface to check whether the PLC networking is normal. After the normal operation, start the inverter automatic search.

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7. When installing the AC line of the Huawei SUN2000 inverter, it is recommended that the stripping length of the insulation layer be 2mm~3mm longer than the crimping area of the OT terminal sub cable for convenient wiring. After pressing the terminal, the place of line needs to be covered with a heat shrinkable T bush or insulating rubber tape.

True

False

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8. During the operation of Huawei SUN2000L household inverter, the inverter “DC SWITCH” can be directly set to “OFF” for shutdown operation.

True

False

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9. Which of the following design is not suitable for a mountain photovoltaic power station system?

Subarray capacity adaptation terrain design

Component spacing design is tailored to local conditions, reducing occlusion

Keep the equipment away from the transformer box and use the mountain road for maintenance.

Design using height adjustable bracket

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10. 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.

True

False

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11. Huawei's SUN2000 inverter communicates by PLC mode when the baud rate defaults to ().

400bps

9600bps

1900bps

115200bps

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12. Huawei SUN2000 inverter recommended the bottom installation space requirements are:

600mm ≤ Distance From Bottom ≤ 730mm

600mm ≤ Distance From Bottom ≤ 800mm

600mm ≤ Distance From Bottom ≤ 900mm

730mm ≤ Distance From Bottom ≤ 900mm

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13. 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)

Reduce the insulation resistance protection threshold in the setting

Connect to the DC string one by one and try to start troubleshooting the fault string.

Use one test tool such as a shaker to detect the insulation resistance of each string one by one.

Check the AC insulation resistance value

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14. When the Huawei PID module is applied to the SUN2000 scenario, which of the following description is correct? (Multiple Choice)

SUN2000 inverter must use three-phase three-wire system

Inverter, AC combiner box, AC power distribution cabinet, etc. cannot have N line connection

If the low-voltage side of the grid-connected isolation transformer is a star connection, the N-line can be led out and grounded.

Does not support PV/PE compensation mode

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15. Which of the following inverter parameters can be modified by the advanced user login Huawei SUN2000 APP?

Secondary overvoltage protection point

Secondary undervoltage protection point

Primary overvoltage protection point

Insulation resistance protection point

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16. Huawei SUN2000 inverter power factor can be adjusted to ().

0.8 advance, 0.8 lag

0.85 advance, 0.85 lag

0.8 advance, 0.85 lag

0.85 advance, 0.8 lag

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17. EHS includes environmental, occupational health and safety. Among them, occupational safety is the most important. Personnel behavior can neglect the impact on the environment and occupational health under the premise of ensuring safety.

True

False

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

True

False

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19. The default value of the RS485 communication address of the Huawei PID module is 1. To modify the RS485 communication address, you can modify it by logging in to the SmartLogger's WEBUI interface.

True

False

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20. In the Smartlogger WebUI interface, when the “Active Power Control” parameter is configured as “Enable”, the Smartlogger can perform active power control on the managed inverter.

True

False

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