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固態燈泡和燈具檢測項目報價???解決方案???檢測周期???樣品要求? |
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本標準適用于船舶上所用電氣設備的系統設計的要求。
本標準規定了漢字鍵盤輸入用通用詞語。 本標準適用于漢字鍵盤輸入、方案優化和評測。中文信息處理的其他領域也可參照執行。
本標準對評估燈和燈系統,包括各種燈具的光學生物安全性給與指導。對于所有非相干寬帶點光源,也包括發光二級管(LED)但不包括激光,在200nm至3000nm波長范圍的光學輻射的光生物危害的評估和控制,本標準對曝輻射限值參考測量技術和分級計劃進行了明確規定。
本標準規定了學校和培訓機構課堂教學和實驗室用的儀器和零部件的安全質量要求以及機械性能、高溫和低溫、噪聲和振動、電離輻射、非電離輻射和電氣安全的附加要求。本標準僅涉及教學儀器零部件的安全而不涉及其他特性,如式樣和特性。本標準適用于學校和培訓機構課堂教學和實驗室用的儀器和零部件。
GB/T 25444的本部分規定了移動式和固定式-近海設施電氣裝置的系統設計要求,適用于近海石油工業的鉆井、生產、處理及貯存,包括管路、泵站或管道清掃站、空壓機站和外露的單浮筒系泊設施。本部分適用于交流電壓不大于35000V和直流電壓不大于750V的永久的、臨時的、移動或手持的所有電氣裝置。本部分不適用于固定的醫療設備或液貨船上的電氣裝置。
本標準規定了以LED為光源、電源電壓不超過250 V的室內一般照明用嵌入式燈具(以下簡稱燈具)的性能要求。本標準適用于使用一體化LED模塊、半一體化LED模塊、非一體化LED模塊、半一體化LED燈或非一體化LED燈的燈具。本標準不適用于使用一體化LED燈的燈具。本標準不適用于嵌入式LED筒燈。
本規范適用于下列新建、擴建和改建的建筑:廠房;倉庫;民用建筑;甲、乙、丙類液體儲罐(區);可燃、助燃氣體儲罐(區);可燃材料堆場;城市交通隧道。人民防空工程、石油和天然氣工程、石油化工工程和火力發電廠與變電站等的建筑防火設計,當有專門的標準時,宜從其規定。本規范不適用于火藥、炸藥及其制品廠房(倉庫)、花炮廠房(倉庫)的建筑防火設計。
本標準適用于新建、改建和擴建以及裝飾的居住、公共和工業建筑的照明設計。
本規則適用于《特種設備安全監察條例》所規定范圍內的起重機。納入《特種設備目錄》的起重機械,全部實施定期檢驗。納入《特種設備目錄》沒有實施安裝監督檢驗以及以整機形式出廠,直接將會使用單位的起重機械,在辦理使用登記前由所在地檢驗檢測機構依據本規則規定的檢驗項目及其內容、要求和方法進行檢驗(即設備投入使用前檢驗,簡稱首檢),合格后方可輸使用登記。實施首檢的起重機械目錄見附件A。
本標準適用于電壓為10kV及以下城市道路照明工程的施工及驗收。工程施工時應按批準的設計圖紙進行施工。
本規范適用于新建旅客列車設計速度為250 km/h~350 km/h的標準軌距高速鐵路設計,明確了高速鐵路運行動車組列車,一般不開行貨車和機車牽引的客車。明確了速度分級為250 km/h、300 km/h、350 km/h 三擋。
1.1 These requirements cover antenna rotators intended for household and commercial use on supplycircuits in accordance with the National Electrical Code, NFPA 70.1.2 An antenna rotator generally consists of:a) A mast-mounted (generally outdoors), motorized drive unit that rotates the antenna to thedesired receiving azimuth,b) An indoor-located (usually near television- or radio-receiving equipment) user-operatedcontrol unit that delivers operating power and direction signals to the drive unit, and,c) A length of multiple-conductor Class-2 circuit cable to electrically interconnect the drive unitand the control unit. Some antenna rotating units may control antenna elevation separately or in addition to azimuth. In some cases, the drive unit may be located indoors.1.3 The power used to drive the motor of an antenna rotator is derived from a circuit complying with Class 2 limitations in accordance with Article 725 of the National Electrical Code, ANSI/NFPA 70.1.4 These requirements do not cover systems that use a stationary antenna and change or rotate thereceiving pattern by electronic or switching means. Such systems are covered by the Standard forAudio-Video Products and Accessories, UL 1492.
1.1 These requirements cover self-contained drinking-water coolers which employ hermetic refrigerantmotor-compressors and which are designed for connection to alternating-current circuits rated not greaterthan 600 volts in accordance with the National Electrical Code, NFPA 70. The requirements also apply towater coolers which supply both hot and cold water.1.2 These requirements do not include additional requirements applicable to equipment designed for usein hazardous locations as defined in the National Electrical Code, NFPA 70.1.3 A product that contains features, characteristics, components, materials, or systems new or differentfrom those covered by the requirements in this standard, and that involves a risk of fire, electric shock, orinjury to persons shall be evaluated using the appropriate additional component and end-productrequirements as determined necessary to maintain the acceptable level of safety as originally anticipatedby the intent of this standard. A product whose features, characteristics, components, materials, orsystems conflict with specific requirements or provisions of this standard cannot be judged to comply withthis standard. Where considered appropriate, revision of requirements shall be proposed and adopted inconformance with the methods employed for development, revision, and implementation of this standard.
The requirements cover secondary protectors for use in single- or multiple-pair-type communications circuits used in the protected side of telecommunications networks that have an operating rms voltage to ground less than 150 volts and installed or used in accordance with the National Electrical Code, NFPA 70.
1.1 These requirements cover ballasts of the resistance, reactance, and electronic (high frequency) types for use with fluorescent lamps involving a potential of 2500 volts or less in accordance with the National Electrical Code, ANSI/NFPA 70.1.2 A fluorescent-lamp ballast may be determined by investigation to be acceptable for use, in a fixtureor other device, with electric-discharge lamps of other than the fluorescent type.1.3 Fluorescent self ballasted lamps and ballast adaptors are evaluated using the Standard forSelf-Ballasted Lamps and Lamp Adapters, UL 1993. The component ballast is evaluated to requirementsin this Standard.1.4 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shockor injury to persons shall be evaluated using appropriate additional component and end-productrequirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.