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Last Updated: Sep 14, 2026
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Huawei H20-681-ENU Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: NetEco 1000S Monitoring System | 25% | - Real-time Monitoring and Data Analysis - Alarm Management and Troubleshooting - System Overview and Architecture - Installation and Initial Configuration - Software Upgrade and System Maintenance |
| Topic 2: SUN2000L Residential Inverter | 5% | - Product Features and Application - Installation and Commissioning |
| Topic 3: Smart PV Plant Networking & Devices | 25% | - Networking Topologies & Communication Protocols - PLC Communication & PID Protection Module - Monitoring System Architecture - SmartLogger Data Collector - SmartACU2000B Sub-array Controller |
| Topic 4: EHS & Delivery Standards | 15% | - Engineering Installation Specifications - Safety Requirements for On-site Work - Operation Safety and Risk Control - EHS Management Framework |
| Topic 5: SUN2000 Inverter Knowledge | 30% | - Commissioning, Operation and Maintenance - Key Features and Specifications of SUN2000 Series - Basic Principles of PV Power Generation - Working Principle and Structure of PV Inverters - Application Scenarios and Installation Requirements |
Huawei Certified Field Specialist -Smart PV Controller Sample Questions:
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
Correct Answer: B 🗳️
The PID effect refers to the phenomenon of ion migration caused by the high voltage of the photovoltaic module between the cell and its grounded metal frame, which causes the performance degradation of the component.
- A. False
- B. True
Correct Answer: B 🗳️
The highest DC input voltage of Huawei SUN2000-33KTL is ()V and the highest DC input voltage of SUN2000-36KTL is ()V.
- A. 1100, 1000
- B. 1000, 1000
- C. 1100, 1100
- D. 1000, 1100
Correct Answer: D 🗳️
About Huawei SUN2000 inverter device storage, which of the following description is correct? (Multiple choice)
- A. The stored temperature should be kept at -40 degree Centigrade ~ +70 degree Centigrade: the relative humidity should be kept at 5% RH~100% RH.
- B. Do not remove the outer packaging of the inverter
- C. After long-term storage, the inverter must be inspected and tested by professionals before it can be put into use.
- D. Store in a clean and dry place and prevent dust and moisture
- E. The maximum stackable size is 4 layers.
- F. Periodic inspection is required during storage. If you find a bite of a worm, you need to replace the packaging materials in time.
Correct Answer: A,B,C,D,E,F 🗳️
Huawei SUN2000L household inverter cooling method is _____.
- A. Water cooling
- B. Natural heat dissipation
- C. Air cooling
- D. Air cooling + natural heat dissipation
Correct Answer: B 🗳️
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