33.040.99 其他电信系统用设备 标准查询与下载

YD/T 2379.9-2019 电信设备环境试验要求和试验方法 第9部分：船载设备

Environmental test requirements and test methods for telecommunications equipment Part 9: Shipborne equipment

YD/T 3554-2019 高压变电站与数据中心共址电磁影响与防护技术要求

Electromagnetic impact and protection technical requirements for co-location of high-voltage substations and data centers

T/ZQBJXH 003-2019 燃油加油机计量检定数据与结果信息化处理操作规范

本标准规定了燃油加油机计量检定数据与结果信息化处理操作规范的系统功能、人员要求及职责、设备、操作流程。

Operational specification for information processing of measurement verification data and results of fuel tankers

YD/T 3371-2018 不同运营商IMS网间互通网关设备测试方法

Test method for gateway equipment for interoperability between IMS networks of different operators

DB35/T 1758-2018 入户型光电转换装置通用技术要求

本标准规定了入户型光电转换装置（以下简称装置）的技术要求、试验方法、检验规则、标志、包装、运输与贮存。 本标准适用于广电网络环境下的装置。

General technical requirements for home-type photoelectric conversion devices

EN IEC 61643-352:2018 低压浪涌保护元件 第352部分：电信和信号网络浪涌隔离变压器（SIT）的选择和应用原则

Components for low-voltage surge protection - Part 352: Selection and application principles for telecommunications and signalling network surge isolation transformers (SITs)

YD/T 3286-2017 宽带普遍服务专用固定客户端设备测试方法

Test methods for broadband universal service dedicated fixed client equipment

BS EN 61643-351:2017 低压电涌保护装置组件. 电信和信令网浪涌隔离变压器(SIT)的性能要求和试验方法

Components for low-voltage surge protective devices. Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)

EN 61643-351:2017 低压电涌保护器元件 第351部分：电信和信号网络电涌隔离变压器（SIT）的性能要求和测试方法

IEC 61643-351:2016 defines test circuits and test methods for determining and verifying the SIT surge parameters. Preferred performance values for key parameters are given. Surge isolation transformers (SITs) are used for signal transformer applications with signal levels up to 400 V peak to peak. SITs are transformers, with or without an internal-winding screen, with a rated impulse withstand voltage greater than the peak voltage of the expected common-mode surge environment. SITs are applicable to components for surge protection against indirect and direct effects of lightning or other transient overvoltage. SITs are used to mitigate the onward propagation of common-mode voltage surges. This part of IEC 61643 does not cover SIT operation under differential-mode lightning surge conditions. Keywords: Surge isolation transformers (SITs)

Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)

IEC 61643-351:2016 低压浪涌保护器件元件第351部分:电信和信号网络浪涌隔离变压器（SIT）的性能要求和测试方法

Components for low-voltage surge protective devices - Part 351: Performance requirements and test methods for telecommunications and signalling network surge isolation transformers (SIT)

YD/T 3059-2016 宽带普遍服务专用固定客户端设备技术要求

Technical requirements for dedicated fixed client equipment for broadband universal service

YD/T 3027-2016 基于公用电信网的宽带客户网络防雷技术要求及保护方法

Lightning protection technical requirements and protection methods for broadband customer networks based on public telecommunications networks

YD/T 3011.2-2016 基于公用通信网的物联网应用 电动自行车定位服务 第2部分：应用平台测试方法

Electric bicycle positioning service for Internet of Things applications based on public communication network Part 2: Application platform testing method

YD/T 3005-2016 基站供电变压器系统的防雷与接地技术要求

Lightning protection and grounding technical requirements for base station power supply transformer system

YD/T 3011.3-2016 基于公用通信网的物联网应用 电动自行车定位服务 第3部分：终端技术要求

Electric bicycle positioning service for Internet of Things applications based on public communication network Part 3: Terminal technical requirements

YD/T 3010-2016 对支持H.248协议设备的安全性技术要求

Security technical requirements for devices supporting H.248 protocol

YD/T 3007-2016 小型无线系统的防雷与接地技术要求

Lightning protection and grounding technical requirements for small wireless systems

YD/T 3011.4-2016 基于公用通信网的物联网应用 电动自行车定位服务 第4部分：终端测试方法

Electric bicycle positioning service for Internet of Things applications based on public communication network Part 4: Terminal test method

YD/T 3008-2016 域名服务安全状态检测要求

Domain name service security status detection requirements

YD/T 3006-2016 通信铁塔临近区域的防雷技术要求

Lightning protection technical requirements for areas adjacent to communication towers