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光缆布线和组件检测项目报价? 解决方案? 检测周期? 样品要求? |
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本部分给出了光纤通信系统(OFCS)的安全运行、维护要求和具体指南。在OFCS中,光功率可以达到发射设备限制以外或距光源很远的距离处。本部分规定了OFCS中的光可达位置的危险等级的评估,替代了依据GB 7247.1中激光产品的分类。本部分适用于完整安装的端到端OFCS,包括其能够产生或放大光辐射的部件和组件。那些仅面向OEM供应商销售的,用于集成到完整安装的端到端OFCS中的独立部件和组件不必按照本部分进行评估,因为终的OFCS本身须按照本部分进行评估。本部分不适用于以传输激光功率为主的光纤系统,例如在材料加工或医疗领域的应用等。除了由激光辐射造成的危害外,OFCS也可能引起其他危害,如火灾。本部分不涉及OFCS在易爆环境中的爆炸或火灾等安全事项。本部分中提及的“激光”包括发光二极管(LED)和光放大器。本部分的目的是:——保护人员免受由OFCS引起的光辐射危害;——对制造商、安装方、检修方和运营商提出要求,需制定工作步骤和提供相关信息,以便采取正确的预防措施;——通过使用符号、标牌和指示,确保对人员提供充分的警示,以防止OFCS潜在的危害。更详细的必要性参见附录A。OFCS的安全依赖于组成系统的设备特性。因此可能需要在产品上标明安全的相关信息或将此类信息包括在使用说明书中。根据潜在的危险等级的要求,OFCS的安全措施和运行责任由安装方或终用户/运营商承担或双方共同承担。本部分将安装和检修操作期间遵守安全指示的责任赋予相应的安装方和检修方,而运行和维护的职责在终用户或运营商。本部分的用户可能属于上述制造商、安装方、终用户或运营商范围中的一方或多方。
GB/T 18233的本部分规定了工业建筑内或其他类型建筑内工业区的通用布缆,或者园区内的单个或多个建筑物。包括平衡布缆和光纤布缆。本部分主要适用于电信服务距离10 000 m内的建筑群。更大距离的系统可参考使用。本部分定义的布缆系统支持广泛的服务,包括自动化、过程控制和监控应用。也包括供电服务。本部分直接或通过引用ISO/IEC 11801-1:2017规定:a) 工业建筑群通用布缆系统的结构和低配置;b) 电信插座(TO)端口;c) 布缆链路和信道的传输性能要求;d) (对)实现的要求和选项;e) 布缆组件性能要求;f) 符合性要求和验收程序。自动化区域中的关键自动化、过程和监控应用服务的布缆不在本部分规定范围内。此类特定应用布缆的信息见IEC 61784-5(设计)和IEC 61918(安装)。安全(电气安全和防护、防火等)和电磁兼容(EMC)要求由其他标准和法规规定,不包括在本部分的范围内。但本部分给出的信息有助于符合这些标准和规范。
GB/T 21714的本部分提出了以下要求:通过采用雷电防护装置(LPS)来防止建筑物的物理损坏、避免LPS附近因接触和跨步电压而引起的生命危险。本部分适用于:a) 任意高度建筑物的LPS设计、安装、检查和维护;b) 对接触和跨步电压引起的人身危害提供保护措施。
本标准规定了工业环境中及工业现场的自动化岛内和岛间的通信网络媒体安装的基本要求。本标准包括对称线缆布线和光纤布线,以及无线媒体的布线设施,但不包括无线媒体本身。其他媒体见IEC 61784-5系列标准。本标准是工业自动化岛通信网络的配套标准,尤其是对IEC 61158系列和IEC 61784系列标准中规定的通信网络。此外,本标准还包括:——ISO/IEC 24702中规定的工业环境电信综合布线的安装;——ISO/IEC 24702中规定的电信综合布线与自动化岛的特定布线之间的连接,其中,用自动化引出端(AO)代替ISO/IEC 24702的电信引出端(TO)。本标准提供解决工业自动化领域关键问题(拓扑、气候条件、振动、化学污染、EMC、功能安全、信息安全等)的指南。本标准为设计者、安装者、验证者和验收测试人员、管理和维护人员分配任务、规定和相应职责,并且/或者给予指导。
本标准规定了小船电气系统的设计、建造、安装和试验要求。本标准适用于内河和海上航行的船长不大于50m或总登记吨不超过500GRT的小船。本标准不适用于仅用蓄电池为发动机启动和航行灯供电的小船,该蓄电池是由船内或船外驱动发动机的交流发电机充电。本标准适用于下列单独或组合的直流和交流电气系统:a)额定电压不超过50V直流系统;b)额定电压不超过250V单相交流系统;c)额定电压不超过1000V的三相交流系统。
本条是编制本标准的目的。本标准仅限于施工质量的验收,工程立项决策阶段、勘察设计阶段和使用中的质量问题不属于本标准的范畴。本次修编将有关地下铁道工程的验收标准与施工标准分开,组成新的工程质量验收体系,以统一地下铁道工程质量的验收方法、程序和质量标准。
本标准规定了光伏(PV)发电系统所使用光伏并网逆变器的产品类型、技术要求及试验方法。本标准适用于连接到PV源电路电压不超过直流1500V,交流输出电压不超过1000V的光伏并网逆变器。集成升压变压器并网至35kV及以下电压等级电网的预装式光伏并网逆变装置可参照执行。
本标准规定了舰船电子装备的通用修理流程和技术要求,包括一般要求、修理级别、修理工程范围、修理流程及要求、检查和验收等。 本标准适用于舰船雷达、声纳、电子对抗、通信和情报指挥等电子装备的修理和检查验收。
This standard will encompass two levels of interface, defining operation overdistances less than 10 m. The physical layer will specify electrical, mechanical, and thermalcharacteristics of connectors and cards. The logical level will describe the address space,data transfer protocols, cache coherence mechanisms, synchronization primitives, control andstatus registers, and initialization and error recovery facilities.
Broadband optical access systems based on Passive Optical Networks (PON) Covering Note: 03/16/2006
Applies to low-voltage landscape lighting systems and components that may consist of an isolating type power unit, wiring, and luminaire. Only covers equipment where the maximum output of each secondary circuit is 25 A, 15 V ac (21.2 V peak) open circuit voltage, 300 VA. The luminaires intended for garden, walkway, patio areas, or similar outdoor locations and for certain indoor locations such as atriums and shopping malls. The power units may be installed indoors or outdoors. The equipment is intended to be installed in accordance with the National Electrical Code, ANSI/NFPA 70.
This International Standard specifies the general, and some of the special, requirements on materials used for the construction of equipment used in gas welding, cutting and allied processes.
The purpose of this Technical Report is to be a first guideline for those considering to install a high bandwidth (high bit-rate) FTTx-network. After studying the Technical Report operators, communities, energy companies, installers and others will understand the necessary steps to take to plan and install FTTx-networks with high quality and cost effectiveness, and to secure a uniform structure and a high quality level on such networks.
The document provides instructions on the methods to be used when installing, repairing or modifying aircraft electrical and optical fibre interconnection systems, subject to the limitations defined in 4 of this document.
This standard specifies the list of test fluids to be used to demonstrate that components and subassemblies will not be adversely affected by contamination by fluids types that they may typically be exposed to. The fluids listed are representative of those commonly used and encountered in airborne and ground operations, and align with the requirements of fluids susceptibility of ISO 7137. This shall not be considered an exhaustive list and additional test fluids may be instructed in the product standard, against which compliance needs to be demonstrated. This standard, when used in conjunction with the test requirements defined in Clause 6 or the product standard shall be considered the starting point to test a component to determine its minimum performance capability when exposed to the fluids listed. Test results obtained from a number of sources over a considerable period of time have shown that, in many cases, widely varying results can be obtained when using fluids that are used in service. The practice of specifying fluids based on performance criteria rather than their constituents can mean variations in test results between batches of the fluid obtained from different manufacturers, or even from the same manufacturer. For this reason the EN 3909 Standard recommends the use of \"standard test fluids\" which are specified by their constituents and contain the chemicals that may be found in commonly used fluids. Where equipment may be exposed to fluid types that are not covered by Table 1 or where specific test fluids are considered to be necessary, the product standard shall identify the particular fluid required. If a manufacturer chooses to include additional test fluids (e. g. to satisfy a customer requirement), they do so at their own risk.
This standard specifies the general characteristics, the conditions for qualification, acceptance and qualityassurance, as well as the test programs and groups for rectangular multipin fibre optic connectors.