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固态灯泡和灯具检测项目报价? 解决方案? 检测周期? 样品要求? |
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本标准适用于船舶上所用电气设备的系统设计的要求。
本标准规定了汉字键盘输入用通用词语。 本标准适用于汉字键盘输入、方案优化和评测。中文信息处理的其他领域也可参照执行。
本标准对评估灯和灯系统,包括各种灯具的光学生物安全性给与指导。对于所有非相干宽带点光源,也包括发光二级管(LED)但不包括激光,在200nm至3000nm波长范围的光学辐射的光生物危害的评估和控制,本标准对曝辐射限值参考测量技术和分级计划进行了明确规定。
本标准规定了学校和培训机构课堂教学和实验室用的仪器和零部件的安全质量要求以及机械性能、高温和低温、噪声和振动、电离辐射、非电离辐射和电气安全的附加要求。本标准仅涉及教学仪器零部件的安全而不涉及其他特性,如式样和特性。本标准适用于学校和培训机构课堂教学和实验室用的仪器和零部件。
GB/T 25444的本部分规定了移动式和固定式-近海设施电气装置的系统设计要求,适用于近海石油工业的钻井、生产、处理及贮存,包括管路、泵站或管道清扫站、空压机站和外露的单浮筒系泊设施。本部分适用于交流电压不大于35000V和直流电压不大于750V的永久的、临时的、移动或手持的所有电气装置。本部分不适用于固定的医疗设备或液货船上的电气装置。
本标准规定了以LED为光源、电源电压不超过250 V的室内一般照明用嵌入式灯具(以下简称灯具)的性能要求。本标准适用于使用一体化LED模块、半一体化LED模块、非一体化LED模块、半一体化LED灯或非一体化LED灯的灯具。本标准不适用于使用一体化LED灯的灯具。本标准不适用于嵌入式LED筒灯。
本规范适用于下列新建、扩建和改建的建筑:厂房;仓库;民用建筑;甲、乙、丙类液体储罐(区);可燃、助燃气体储罐(区);可燃材料堆场;城市交通隧道。人民防空工程、石油和天然气工程、石油化工工程和火力发电厂与变电站等的建筑防火设计,当有专门的标准时,宜从其规定。本规范不适用于火药、炸药及其制品厂房(仓库)、花炮厂房(仓库)的建筑防火设计。
本标准适用于新建、改建和扩建以及装饰的居住、公共和工业建筑的照明设计。
本规则适用于《特种设备安全监察条例》所规定范围内的起重机。纳入《特种设备目录》的起重机械,全部实施定期检验。纳入《特种设备目录》没有实施安装监督检验以及以整机形式出厂,直接将会使用单位的起重机械,在办理使用登记前由所在地检验检测机构依据本规则规定的检验项目及其内容、要求和方法进行检验(即设备投入使用前检验,简称首检),合格后方可输使用登记。实施首检的起重机械目录见附件A。
本标准适用于电压为10kV及以下城市道路照明工程的施工及验收。工程施工时应按批准的设计图纸进行施工。
本规范适用于新建旅客列车设计速度为250 km/h~350 km/h的标准轨距高速铁路设计,明确了高速铁路运行动车组列车,一般不开行货车和机车牵引的客车。明确了速度分级为250 km/h、300 km/h、350 km/h 三挡。
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.