光伏項目建筑結構及電纜選擇與接地保護

　　Photovoltaic project building structure and cable selection and grounding protection

　　一、電線電纜選擇與敷設

　　1、 Selection and laying of wires and cables

　　光伏發電站電纜的選擇與敷設，應符合現行國家標準《電力工程電纜設計規范》GB50217的規定，電纜截面應進行技術經濟比較后選擇確定。

　　The selection and laying of cables for photovoltaic power plants should comply with the provisions of the current national standard "Code for Design of Cables in Power Engineering" GB50217, and the cable cross-section should be selected and determined after technical and economic comparison.

　　1.光伏組件與組串匯流箱、光伏組件與組串式逆變器之間的電纜宜采用單芯光伏專用電纜，其耐紫外線、耐臭氧、耐氣候性、溫度特性、阻燃特性等均應符合現行國家標準《太陽能光伏發電用電纜技術規范》的規定。光伏電纜結構，如下圖：

　　1. The cables between photovoltaic modules and string combiner boxes, as well as between photovoltaic modules and string inverters, should use single core photovoltaic dedicated cables, which should comply with the current national standard "Technical Specification for Cables for Solar Photovoltaic Power Generation" in terms of UV resistance, ozone resistance, weather resistance, temperature characteristics, flame retardant properties, etc. The structure of photovoltaic cable is shown in the following figure:

　　2.電纜的截面應根據長度進行選擇，光伏系統交流電壓降落不宜大于3%，光伏系統直流電壓降落不宜大于2%，且應符合《電力工程直流電源系統設計技術規程》DL/T 5044的規定。如電壓降落不滿足要求時，應提升相應電纜的截面或調整設備相對位置以縮短路徑長度，使壓降在規定范圍內。

　　2. The cross-section of the cable should be selected according to its length. The AC voltage drop of the photovoltaic system should not exceed 3%, and the DC voltage drop of the photovoltaic system should not exceed 2%, and should comply with the provisions of the "Technical Code for Design of DC Power Supply System in Electric Power Engineering" DL/T 5044. If the voltage drop does not meet the requirements, the cross-sectional area of the corresponding cable should be increased or the relative position of the equipment should be adjusted to shorten the path length, so that the voltage drop is within the specified range.

　　3.集中敷設于溝道、槽盒中的電纜應選用C類及以上阻燃電纜。在西北干旱地區常采用直埋方式敷設，采用此方式敷設有利于降低工程投資并有利于防止電纜火災，因此對此部分電纜不做阻燃要求，但應采用鎧裝電纜。與建筑相結合的光伏發電系統，電纜宜采用C類及以上阻燃電纜，電力電纜宜選擇銅導體。

　　3. Cables centrally laid in channels and troughs should use Class C or above flame-retardant cables. In the arid areas of Northwest China, direct burial is often used for laying, which is beneficial for reducing project investment and preventing cable fires. Therefore, there are no flame retardant requirements for this part of the cable, but armored cables should be used. The photovoltaic power generation system combined with buildings should use Class C or above flame-retardant cables for cables, and copper conductors for power cables.

　　4.電纜直埋敷設時要采取鎧裝保護。組件與組串匯流箱或組串式逆變器之間的連接電纜需要埋地敷設時，采用穿管保護時，可不用鎧裝保護，但穿管時正負出色電纜應分穿在不同保護管內。

　　When laying cables directly buried, armor protection should be adopted. When the connecting cables between components and string combiner boxes or string inverters need to be buried underground and protected by conduit, armor protection is not necessary. However, the positive and negative cables should be separately threaded in different protective conduits during conduit installation.

　　5.光伏組件之間及組件與匯流箱或組串式逆變器之間的電纜，應有固定措施和防曬措施。

　　5. The cables between photovoltaic modules and between modules and combiner boxes or string inverters should have fixing measures and sun protection measures.

　　6.電力電纜和控制電纜、光纜、屏蔽雙絞線等線纜應分開排列，防止電力電纜對信號電纜干擾。光伏發電站中電氣設備電纜出線孔與地面之間電纜裸露在外部的部分需要設置電纜保護管加以保護，以防外力破壞或斷線引起周圍設備帶電，同時增加電纜抗腐蝕能力。

　　6. Power cables, control cables, optical cables, shielded twisted pair cables, and other cables should be arranged separately to prevent interference from power cables to signal cables. The exposed part of the cable between the electrical equipment cable outlet hole and the ground in the photovoltaic power station needs to be protected by cable protection pipes to prevent external damage or disconnection from causing surrounding equipment to become electrified, and to increase the cable's corrosion resistance.

　　7.集電線路采用架空設計時應符合現行國家標準《66kV及以下架空電力線路設計規范》GB50061的規定；站區內桿塔定位時應減少桿塔對光伏組件的遮擋影響。

　　7. When the collection line adopts overhead design, it shall comply with the provisions of the current national standard "Code for Design of 66kV and Below Overhead Power Lines" GB50061; When positioning the towers within the station area, the obstruction effect of the towers on the photovoltaic modules should be reduced.

　　8.與農牧業相結合的光伏發電站，匯流箱和逆變設備之間的電纜，宜采用電纜橋架或電纜線槽形式，電纜橋架、電纜線槽的設置要便于通行和農事作業。電纜采用直埋敷設時，耕作區直埋電纜深度宜不小于1000mm；采用固定式方陣基礎的水面光伏發電站，位于水面區域的電纜宜采用電纜橋架或電纜線槽敷設，電纜橋架、電纜線槽的設置不應影響水域內交通運輸。漂浮式水面光伏發電站，光伏方陣與陸上連接段的電纜宜固定在浮體上呈蛇形敷設且滿足伸縮要求。位于水面區域的電纜應具有防水、抗紫外性能。

　　8. For photovoltaic power plants combined with agriculture and animal husbandry, the cables between the combiner box and the inverter equipment should be in the form of cable trays or cable troughs, and the installation of cable trays and cable troughs should be convenient for passage and agricultural operations. When cables are buried directly, the depth of buried cables in cultivated areas should not be less than 1000mm. For water surface photovoltaic power plants with fixed array foundations, cables located in the water surface area should be laid using cable trays or cable troughs, and the installation of cable trays and cable troughs should not affect transportation within the water area. The cables connecting the photovoltaic array and the onshore connection section of the floating surface photovoltaic power station should be fixed on the floating body and laid in a serpentine shape to meet the expansion and contraction requirements. Cables located in water surface areas should have waterproof and UV resistant properties.

　　二、過電壓保護和接地

　　2、 Overvoltage protection and grounding

　　光伏發電站的升壓站區和就地逆變升壓室的過電壓保護和接地，應符合現行國家標準《交流電氣裝置的過電壓保護和絕緣配合設計規范》GB/T 50064、《交流電氣裝置的接地設計規范》GB/T 50065和現行行業標準《光伏發電站防雷技術規程》DL/T1364的規定。光伏發電站建筑物防雷應符合現行國家標準《建筑物防雷設計規范》GB50057的規定。升壓站的防雷設計應符合現行國家標準《交流電氣裝置的過電壓保護和絕緣配合設計規范》GB/T50064規定。

　　The overvoltage protection and grounding of the boosting station area and the on-site inverter boosting room of the photovoltaic power station shall comply with the current national standards "Design Specification for Overvoltage Protection and Insulation Coordination of AC Electrical Equipment" GB/T 50064, "Design Specification for Grounding of AC Electrical Equipment" GB/T 50065, and the current industry standard "Technical Code for Lightning Protection of Photovoltaic Power Stations" DL/T1364. The lightning protection of photovoltaic power station buildings shall comply with the provisions of the current national standard "Code for Design of Lightning Protection of Buildings" GB50057. The lightning protection design of the booster station should comply with the current national standard "Design Specification for Overvoltage Protection and Insulation Coordination of AC Electrical Equipment" GB/T50064.

　　1.光伏方陣場地內應設置接地網，接地網除應采用人工接地出色外，還應充分利用支架基礎的金屬構件。

　　1. A grounding grid should be installed within the photovoltaic array site. In addition to using artificial grounding electrodes, the grounding grid should also fully utilize the metal components of the support foundation.

　　2.接地應連續、可靠，接地電阻應小于4Ω。

　　2. The grounding should be continuous and reliable, and the grounding resistance should be less than 4 Ω.

　　3.光伏組件金屬邊框應與金屬支架可靠電氣連接，且單個金屬支架應至少在兩端接地。當采用非金屬支架時，光伏組件金屬邊框應用引下線引下與接地網可靠連接。

　　3. The metal frame of the photovoltaic module should be reliably electrically connected to the metal bracket, and a single metal bracket should be grounded at least at both ends. When non-metallic brackets are used, the metal frame of the photovoltaic module should be reliably connected to the grounding grid through the use of down conductors.

　　4.室外布置的箱式逆變器和變壓器等，宜充分利用其箱體金屬外殼對設備進行雷電防護；當采用非金屬箱體時，應設置接閃器對設備進行防護。

　　4. Box type inverters and transformers arranged outdoors should fully utilize their metal casing to provide lightning protection for the equipment; When using non-metallic enclosures, a lightning arrester should be installed to protect the equipment.

　　三、建筑結構相關要求

　　3、 Requirements related to building structure

　　光伏發電站主要配備有綜合控制室、變配電站、水泵房、汽車庫、警衛室等。根據項目規模及總體布置，這些站、室可增減或合并。建(構)筑物的布置應根據總體布置要求、站址地質條件、設備型號、電源進線方向、對外交通以及有利于站房施工、設備安裝與檢修和工程管理等條件，經技術經濟比較確定。建筑設計應根據規劃留有擴建的空間。

　　The photovoltaic power station is mainly equipped with a comprehensive control room, a power distribution station, a water pump room, a garage, a guard room, etc. According to the project scale and overall layout, these stations and rooms can be added, removed, or merged. The layout of buildings (structures) should be determined based on overall layout requirements, geological conditions of the station site, equipment models, direction of power supply lines, external transportation, and conditions conducive to station construction, equipment installation and maintenance, and engineering management, through technical and economic comparisons. Architectural design should leave room for expansion according to the plan.

　　1.地面光伏發電站的建筑物設計應滿足設備布置、安裝、運行和檢修的要求。滿足內外交通運輸、站房結構布置、房內采暖、通風和采光、防火、防潮、防塵、防噪聲等要求。建筑造型應與場地協調，布置合理，適用美觀。

　　The building design of ground photovoltaic power stations should meet the requirements of equipment layout, installation, operation, and maintenance. Meet the requirements of internal and external transportation, station building structure layout, indoor heating, ventilation and lighting, fire prevention, moisture prevention, dust prevention, noise prevention, etc. The architectural design should be coordinated with the site, arranged reasonably, and aesthetically pleasing.

　　2.建筑物節能設計應滿足建筑功能、使用質量、基本熱工性能要求。包括建筑物及其圍護結構的保溫、隔熱和防潮設計，所采取的主要措施有：控制窗戶面積，提高窗戶氣密性；圍護結構實際采用的傳熱阻盡量接近經濟傳熱阻；在嚴寒和寒冷地區，入口處設置門斗，加強外門、窗保溫等。

　　2. Energy saving design of buildings should meet the requirements of building functionality, quality of use, and basic thermal performance. The main measures taken for insulation, heat preservation, and moisture prevention design of buildings and their surrounding structures include controlling window area and improving window air tightness; The actual heat transfer resistance used in the enclosure structure should be as close as possible to the economic heat transfer resistance; In extremely cold and frigid regions, door hoppers should be installed at the entrance to enhance the insulation of external doors and windows.

　　3.建筑物門窗應根據建筑物內通風、采暖和采光的需要合理布置，有效地組織與室外空氣直接流通的自然風，降低設備運行溫度。宜利用自然采光，盡量爭取好朝向，獲取良好的天然采光。在嚴寒和寒冷地區，一般可采用雙層玻璃窗以滿足保溫要求。在風沙較大的荒漠地區，外門窗還需有防風沙措施。

　　3. Building doors and windows should be arranged reasonably according to the needs of ventilation, heating, and lighting inside the building, effectively organizing natural wind that directly circulates with outdoor air and reducing equipment operating temperature. It is advisable to utilize natural lighting and strive for a good orientation to obtain good natural lighting. In extremely cold and frigid regions, double-layer glass windows can generally be used to meet insulation requirements. In desert areas with strong sandstorms, external doors and windows also need to have wind and sand prevention measures.

　　4.建筑物應預留設備搬入口，設備搬入口可結合門窗洞或非承重墻設置。采用酸性蓄電池的蓄電池室和貯酸室應采用耐酸地面，其內墻面應涂耐酸漆或鋪設耐酸材料。

　　4. Buildings should reserve equipment access points, which can be combined with door and window openings or non load bearing walls. The battery room and acid storage room using acidic batteries should have acid resistant flooring, and their interior walls should be coated with acid resistant paint or covered with acid resistant materials.

　　5.與光伏發電系統相結合的建筑主體結構或結構構件，應能夠承受光伏發電系統傳遞的荷載。在新建建筑上安裝光伏發電系統時，建筑結構設計時需事先考慮其傳遞的荷載效應；在既有建筑物上安裝光伏發電系統時，需進行建筑結構安全復核。

　　5. The main structure or structural components of buildings combined with photovoltaic power generation systems should be able to withstand the loads transmitted by the photovoltaic power generation system. When installing photovoltaic power generation systems on newly constructed buildings, the load effects transmitted should be considered in advance during the design of the building structure; When installing photovoltaic power generation systems on existing buildings, a structural safety review of the building is required.

　　6.與光伏發電系統相結合的建筑設計時，光伏發電系統宜布置在便于光伏設備維修、更換的建筑部位。廚房排油煙煙口、屋面排風、排煙道、通氣管、空調系統等構件布置應與光伏組件相互避讓。光伏發電系統的布置不應影響建筑所在部位的雨水排放。

　　When designing buildings combined with photovoltaic power generation systems, the photovoltaic power generation system should be arranged in building areas that are convenient for maintenance and replacement of photovoltaic equipment. The layout of kitchen smoke exhaust vents, roof exhaust ducts, smoke exhaust ducts, ventilation pipes, air conditioning systems and other components should avoid each other with photovoltaic modules. The layout of photovoltaic power generation systems should not affect the rainwater discharge in the location of the building.

　　7.多雪地區的建筑屋面安裝光伏組件時宜設置便于人工除雪、清掃的安全通道。屋面防水層上安裝光伏組件時應采取保護措施。建筑物屋面可根據當地氣候條件和站房內通風、采暖要求設置保溫隔熱層。光伏發電系統的管線需要穿越屋面時應設置防水套管，并做防水密封處理。建筑屋面安裝光伏發電系統應考慮屋面防水的更新和維護的需要。建筑應有防止光伏組件墜落的安全防護措施。單個光伏支架不應跨越建筑變形縫。

　　When installing photovoltaic modules on the roofs of buildings in snowy areas, it is advisable to set up safe passages for manual snow removal and cleaning. When installing photovoltaic modules on the roof waterproof layer, protective measures should be taken. The roof of a building can be equipped with insulation layers according to local climate conditions and ventilation and heating requirements inside the station building. When the pipelines of the photovoltaic power generation system need to pass through the roof, waterproof sleeves should be installed and waterproof sealing treatment should be carried out. The installation of photovoltaic power generation systems on building roofs should consider the need for updating and maintaining roof waterproofing. Buildings should have safety protection measures to prevent photovoltaic modules from falling. A single photovoltaic bracket should not cross building deformation joints.

　　8.光伏發電站中，除光伏支架及基礎外的建(構)筑物的結構設計使用年限應為50年?？拐鹪O防烈度應符合現行國家標準《建筑抗震設計規范》GB50011的規定。結構構件應根據承載能力出色狀態及正常使用出色狀態的要求，進行承載能力、穩定、變形、抗裂、抗震驗算。

　　8. In photovoltaic power plants, the structural design service life of buildings (structures) other than photovoltaic brackets and foundations should be 50 years. The seismic fortification intensity should comply with the provisions of the current national standard "Code for Seismic Design of Buildings" GB50011. Structural components should undergo load-bearing capacity, stability, deformation, crack resistance, and seismic verification according to the requirements of the ultimate limit state and normal service limit state.

　　9.光伏發電站的結構設計，應依據巖土工程勘察報告進行。主要核實和核心考慮報告中如下內容：有無影響場地穩定性的不良地質條件及其危害程度；場地范圍內的地層結構及其均勻性，以及各巖土層的物理力學性質；地下水埋藏情況、類型和水位變化幅度及規律，以及對建筑材料的腐蝕性；在抗震設防區劃分的場地土類型和場地類別，并對飽和砂土及粉土進行液化判別；對可供采用的地基基礎設計方案進行論證并確定與設計要求相對應的地基承載力及變形計算參數，以及設計與施工應注意的問題；地下水、土壤腐蝕性；地基土凍脹性、濕陷性、膨脹性的評價；水面光伏發電站應明確項目所在水體的腐蝕性、豐水期和枯水期的水位。

　　9. The structural design of photovoltaic power plants should be based on the geotechnical investigation report. Mainly verify and focus on the following contents in the report: whether there are adverse geological conditions that affect the stability of the site and their degree of harm; The geological structure and uniformity within the site, as well as the physical and mechanical properties of each rock and soil layer; The burial situation, type, and magnitude and regularity of water level changes in groundwater, as well as its corrosiveness to building materials; Divide the site soil types and categories in seismic fortification zones, and conduct liquefaction discrimination on saturated sand and silt; Discuss the available foundation design schemes and determine the foundation bearing capacity and deformation calculation parameters corresponding to the design requirements, as well as the issues to be noted in design and construction; Groundwater and soil corrosiveness; Evaluation of frost heave, collapsibility, and expansibility of foundation soil; The water surface photovoltaic power station should specify the corrosiveness of the water body where the project is located, as well as the water levels during the wet and dry seasons.

　　10.建筑結構及支架的基礎應進行強度、變形、抗傾覆和抗滑移驗算，采取相應的措施，且應符合國家現行標準《構筑物抗震設計規范》GB50191、《建筑地基基礎設計規范》GB50007、《建筑樁基技術規范》JGJ94、《建筑地基處理技術規范》JGJ79和《太陽能發電站支架基礎技術規范》GB 51101等的規定。

　　10. The foundation of building structures and supports should undergo strength, deformation, anti overturning, and anti slip calculations, and corresponding measures should be taken. It should also comply with the current national standards such as "Code for Seismic Design of Structures" GB50191, "Code for Design of Building Foundation" GB50007, "Technical Code for Building Pile Foundations" JGJ94, "Technical Code for Building Foundation Treatment" JGJ79, and "Technical Code for Solar Power Station Support Foundation" GB 51101.

　　11.對于地面電站，當場地地下水位低、穩定持力層埋深大、需要冬季施工、地形起伏大或對場地生態恢復要求較高時，支架的基礎可采用螺旋樁、型鋼樁等鋼制地錨。

　　11. For ground power stations, when the groundwater level is low, the stable bearing layer is deeply buried, winter construction is required, the terrain is undulating, or the ecological restoration requirements of the site are high, the foundation of the support can use steel anchors such as spiral piles and steel piles.

　　12.對于水面光伏電站，應根據水文、工程地質和施工條件，經技術經濟對比后，確定采用漂浮式或固定式支架基礎。采用固定式支架基礎時，宜采用預制樁基礎。四、建筑給排水、暖通與空調光伏發電站給水應滿足生產、生活和消防用水要求，且應符合現行國家標準《建筑給水排水設計規范》GB50015的規定。生活飲用水的水質應符合現行國家標準《生活飲用水衛生標準》GB5749的規定。

　　For surface photovoltaic power plants, floating or fixed support foundations should be determined based on hydrological, engineering geological, and construction conditions, after technical and economic comparisons. When using a fixed bracket foundation, it is advisable to use a prefabricated pile foundation. 4、 The water supply for building water supply and drainage, HVAC and photovoltaic power plants should meet the requirements for production, domestic and fire-fighting water, and should comply with the provisions of the current national standard "Code for Design of Building Water Supply and Drainage" GB50015. The water quality of drinking water should comply with the current national standard "Sanitary Standards for Drinking Water" GB5749.

　　1.要合理利用水資源和保護水體。綜合利用各種水資源并符合所在地區水資源綜合利用規劃。除生活飲用、盥洗、淋浴等用水外，在滿足水質要求的情況下，生產和雜用應充分考慮利用非傳統水資源、生產排出的清潔廢水等資源，當有市政再生水條件時，應優先利用市政再生水。

　　1. Reasonably utilize water resources and protect water bodies. Comprehensively utilize various water resources and comply with the comprehensive utilization plan of water resources in the region. In addition to drinking water, washing water, showering water, etc., production and miscellaneous use should fully consider the utilization of non-traditional water resources, clean wastewater discharged from production, and other resources, while meeting water quality requirements. When there are conditions for municipal recycled water, priority should be given to using municipal recycled water.

　　2.寒冷及嚴寒地區，給水管設計時應設泄水裝置。

　　2. In cold and extremely cold regions, drainage devices should be installed in the design of water supply pipes.

　　3.光伏發電站內各類廢、污水應按水質分流排水，并應根據排放要求進行處理，處理后對外排放的水質應符合現行國家標準《污水綜合排放標準》GB 8978的有關規定。

　　3. Various types of waste and sewage in photovoltaic power plants should be separated and discharged according to water quality, and treated according to discharge requirements. The water quality discharged after treatment should comply with the relevant provisions of the current national standard "Comprehensive Wastewater Discharge Standard" GB 8978.

　　4.光伏組件清洗系統和設備宜采用節水型，清洗用水應為中性水，避免使用弱酸弱堿水對組件產生腐蝕。采用管道清洗光伏組件時，設計水壓應滿足現行國家標準《室外給排水設計規范》GB 50014中的相關規定。

　　4. The photovoltaic module cleaning system and equipment should be water-saving, and the cleaning water should be neutral water to avoid corrosion of the components caused by weak acid and weak alkali water. When using pipeline cleaning for photovoltaic modules, the design water pressure should meet the relevant provisions of the current national standard "Code for Design of Outdoor Water Supply and Drainage" GB 50014.

　　5.光伏發電站建筑累年日平均溫度穩定低于或等于5℃的日數大于或等于90天的地區，當建筑物內經常有人停留、對工作或對室內溫度有一定要求時，應設置采暖設施。采暖通風和空氣調節室外空氣計算參數的選用，應符合現行國家標準《工業建筑采暖通風與空氣調節設計規范》GB50019和《民用建筑采暖通風與空氣調節設計規范》GB 50736的規定。

　　5. In areas where the average daily temperature of photovoltaic power station buildings has remained stable below or equal to 5 ℃ for more than or equal to 90 days over the years, heating facilities should be installed when people often stay in the building, have certain requirements for work or indoor temperature. The selection of outdoor air calculation parameters for heating, ventilation, and air conditioning should comply with the current national standards "Design Code for Heating, Ventilation, and Air Conditioning of Industrial Buildings" GB50019 and "Design Code for Heating, Ventilation, and Air Conditioning of Civil Buildings" GB 50736.

　　6.光伏發電站內各類建筑物冬季采暖室內計算溫度宜符合下表的規定：注：采用閥控式密封鉛酸電池組的蓄電池室，室內計算溫度為15℃。

　　6. The calculated indoor temperature for winter heating of various buildings in the photovoltaic power station should comply with the following table: Note: For battery rooms using valve regulated sealed lead-acid battery packs, the calculated indoor temperature is 15 ℃.

　　7.需設置采暖的建筑物，當其位于嚴寒地區或寒冷地區且在非工作時間或中斷使用的時間內，室內溫度應按5℃設置值班采暖。

　　7. For buildings that require heating, when they are located in extremely cold areas or cold regions and during non working hours or interrupted use, the indoor temperature should be set at 5 ℃ for duty heating.

　　8.光伏發電站低溫加熱電纜輻射采暖宜采用地板式；低溫電熱膜輻射采暖宜采用頂棚式。

　　8. Low temperature heating cable radiation heating for photovoltaic power plants should adopt floor type heating; Low temperature electric heating film radiation heating should adopt ceiling type.

　　9.光伏發電站各類建筑應有良好的自然通風。當自然通風達不到室內空氣參數要求時，可采用自然與機械聯合通風、機械通風、局部空氣調節等方式。通風系統應考慮防風沙措施。

　　9. All types of buildings in photovoltaic power plants should have good natural ventilation. When natural ventilation cannot meet the indoor air parameter requirements, methods such as natural and mechanical combined ventilation, mechanical ventilation, and local air conditioning can be used. The ventilation system should consider measures to prevent wind and sand.

　　10.逆變器室的環境溫度應控制在設備運行允許范圍內，應有通風設施，確保逆變器產生的廢熱能排離設備，出風口的朝向應根據當地主要風向確定，進風口、出風口應有防塵、防雨、防植物飛絮等設施。

　　10. The ambient temperature of the inverter room should be controlled within the allowable range of equipment operation, and ventilation facilities should be provided to ensure that the waste heat generated by the inverter is discharged from the equipment. The orientation of the air outlet should be determined according to the local prevailing wind direction, and the inlet and outlet should have dust, rain, and plant fly proof facilities.

　　11.當通風裝置不能滿足工藝對室內的溫度、濕度要求時，主控制室、繼電器室等應設置空氣調節裝置。當采用局部空氣調節或局部區域空氣調節能滿足要求時，不宜采用全室性空氣調節。

　　When the ventilation device cannot meet the temperature and humidity requirements of the process for indoor use, air conditioning devices should be installed in the main control room, relay room, etc. When local air conditioning or local area air conditioning can meet the requirements, it is not advisable to use full room air conditioning.

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