Standard No.:	NB/T 11903.1-2025
English Name:	Technical specifications of robots for photovoltaic module use - Part 1: Dry cleaning robot
Chinese Name:	光伏组件用机器人技术规范 第1部分：干式清扫机器人
Professional Classification:	NB    Professional Standard - Energy
Source Content Issued by:	National Energy Administration
Issued on:	2025-12-18
Implemented on:	2026-6-18
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	11500 words
Translation Price(USD):	345.0
Delivery:	via email in 1~5 business day

NB/T 11903.1-2025 Technical specifications of robots for photovoltaic module use - Part 1: Dry cleaning robot English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS CCS H Professional Standard of the People’s Republic of China NB/T 11903.1-2025 Technical specifications of robots for photovoltaic module use - Part 1: Dry cleaning robot 光伏组件用机器人技术规范 第1部分：干式清扫机器人 (English translation) Issue date: 2023-12-28 Implementation date: 2024-06-28 Issued by the National Energy Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 System composition 5 Technical requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, transportation and storage Annex A (informative) Installation status and deviation description of photovoltaic array modules Robotics technical specification for photovoltaic modules — Part 1: Dry cleaning robots 1 Scope This document specifies the system composition, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of dry cleaning robots for photovoltaic modules. This document is applicable to fully automatic dry cleaning robots that travel along photovoltaic module frames or fixed tracks in photovoltaic power station environments. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 2423.1, Environmental testing for electric and electronic products — Part 2: Test methods — Tests A: Cold GB/T 2423.2, Environmental testing for electric and electronic products — Part 2: Test methods — Tests B: Dry heat GB/T 2423.3, Environmental testing for electric and electronic products — Part 2: Test methods — Test Cab: Damp heat, steady state GB/T 2423.4, Environmental testing for electric and electronic products — Part 2: Test methods — Test Db: Damp heat, cyclic (12h + 12h cycle) GB/T 2423.17, Environmental testing for electric and electronic products — Part 2: Test methods — Test Ka: Salt mist GB/T 2423.22, Environmental testing — Part 2: Test methods — Test N: Change of temperature GB/T 4208, Degrees of protection provided by enclosure (IP code) GB/T 6495.4, Procedures for temperature and irradiance corrections to measured I-V characteristics of crystalline silicon photovoltaic devices GB/T 16422.3, Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps GB/T 16935.1, Insulation coordination for equipment within low-voltage systems — Part 1: Principles, requirements and tests GB/T 17248.3, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections GB/T 17626.2, Electromagnetic compatibility — Testing and measurement techniques — Electrostatic discharge immunity test GB/T 17626.3, Electromagnetic compatibility — Testing and measurement techniques — Radiated, radio-frequency, electromagnetic field immunity test GB/T 17626.5, Electromagnetic compatibility — Testing and measurement techniques — Surge immunity test GB/T 17626.8, Electromagnetic compatibility — Testing and measurement techniques — Power frequency magnetic field immunity test GB/T 19292.1, Corrosion of metals and alloys — Corrosivity of atmospheres — Part 1: Classification, determination and estimation GB/T 28591, Wind force scale GB 50794-2012, Code for construction of photovoltaic power station GB 50797-2012, Code for design of photovoltaic power station JB/T 8896-1999, Acceptance rules for industrial robots IEC 61215-2:2021, Terrestrial photovoltaic (PV) modules — Design qualification and type approval — Part 2: Test procedures 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB 50794, as well as the following, apply. 3.1 dry cleaning robot A robot that travels along photovoltaic module frames or fixed tracks and uses dry cleaning devices such as rotating brushes to clean photovoltaic modules without the use of liquids or solutions, capable of operating without human intervention (hereinafter referred to as "robot"). Note: Typical cleaning devices include rotating brushes, wipers, dusters, etc. 3.2 docking station A mechanical auxiliary device installed at one end of a single row of photovoltaic modules in a photovoltaic power station, connected to the module string, used for parking the robot when not in operation. 3.3 reversing station A mechanical auxiliary device installed at the other end of a single row of photovoltaic modules in a photovoltaic power station, connected to the module string, used for changing the direction of travel of the robot after completing a single cleaning pass on the module string. 3.4 cleaning efficiency The ability of the robot to remove dust and other contaminants from the surface of photovoltaic modules, measured by the ratio of the power generation of the photovoltaic modules after cleaning to the power generation of the modules in a clean state. 4 System composition The robot system composition configuration shall meet the requirements of Table 1. 5 Technical requirements 5.1 Operating conditions 5.1.1 The robot shall be capable of normal operation on photovoltaic arrays conforming to 5.3 of GB 50794-2012. 5.1.2 The robot shall be capable of normal operation under the following environmental conditions: a) Ambient temperature: −20 °C to 60 °C; b) Relative humidity: 5 % to 95 %, non-condensing, no icing; c) Ambient wind speed: 0 m/s to 15 m/s; d) The working environment shall be free from corrosive gases and vapours that may damage metals and insulation. Note: For requirements more stringent than the above environmental conditions, they shall be separately proposed by the user based on actual conditions. 5.2 Appearance and structural requirements The appearance and structure of the robot shall meet the following requirements: a) The robot appearance shall be neat, connecting cables shall be securely fixed, and the layout shall be reasonable; b) The robot shall be structurally robust, and all connecting and fastening components shall have anti-loosening measures; c) The external surface of the robot shall be smooth and uniform, free from scratches, burrs and other defects, with clear markings; d) Exposed parts of the robot shall have protective coatings or anti-corrosion design, and the coating shall be firm, free from blistering, wrinkles, cracks and similar defects; e) The electrical wiring of the robot shall be neatly arranged, securely fixed, logically routed, easy to install and maintain, and distinguished by prominent colours and markings. 5.3 Functional requirements 5.3.1 Movement functions