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现行 ITU-R RA.479
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Protection of frequencies for radioastronomical measurements in the shielded zone of the Moon 月球屏蔽区射电天文测量的频率保护
发布日期: 2003-05-28
分类信息
发布单位或类别: 美国-国际电信联盟
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相似标准/计划/法规
现行
BS EN IEC 60255-181-2019
Measuring relays and protection equipment-Functional requirements for frequency protection
测量继电器和保护设备
2019-05-09
现行
IEC 60255-181-2019
Measuring relays and protection equipment - Part 181: Functional requirements for frequency protection
测量继电器和保护设备.第181部分:频率保护的功能要求
2019-02-27
现行
GB/T 14598.181-2021
量度继电器和保护装置 第181 部分:频率保护功能要求
Measuring relays and protection equipment—Part 181:Functional requirements for frequency protection
2021-12-31
现行
ITU-T G.243
Protection of pilots and additional measuring frequencies at points where there is a through-connection
在存在直通连接的点处保护导频和附加测量频率
1988-11-25
现行
ITU-T G.243
Protection of pilots and additional measuring frequencies at points where there is a through-connection
在存在直通连接的点处保护导频和附加测量频率
1988-11-25
现行
ITU-R BS.559
Objective measurement of radio-frequency protection ratios in LF, MF and HF broadcasting
低频、中频和高频广播中射频保护比的客观测量
1990-06-01
现行
ITU-R BS.559
Objective measurement of radio-frequency protection ratios in LF, MF and HF broadcasting
低频、中频和高频广播中射频保护比的客观测量
1990-06-01
现行
DIN EN IEC 60255-181
Measuring relays and protection equipment - Part 181: Functional requirements for frequency protection (IEC 60255-181:2019); German version EN IEC 60255-181:2019
测量继电器和保护设备.第181部分:频率保护的功能要求(IEC 60255-181-2019);德文版EN IEC 60255-181:2019
2020-02-01
现行
UNE-EN 60255-22-7-2004
Electrical relays -- Part 22-7: Electrical disturbance tests for measuring relays and protection equipment - Power frequency immunity tests
电气继电器第22-7部分:测量继电器和保护设备的电气干扰试验工频抗扰度试验
2004-03-26
现行
UNE-EN 60255-22-6-2001
Electrical relays -- Part 22-6: Electrical disturbance tests for measuring relays and protection equipment - Immunity to conducted disturbances induced by radio frequency fields.
电气继电器第22-6部分:测量继电器和保护设备的电气干扰试验射频场感应的传导干扰抗扰度
2001-12-31
现行
DIN EN 60255-22-7
Electrical relays - Part 22-7: Electrical disturbance tests for measuring relays and protection equipment - Power frequency immunity tests (IEC 60255-22-7:2003); German version EN 60255-22-7:2003
电气继电器.第22-7部分:测量继电器和保护设备的电气干扰试验.工频抗扰度试验(IEC 60255-22-7-2003);德文版EN 60255-22-7:2003
2004-01-01
现行
DIN EN 60255-22-6
Electrical relays - Part 22-6: Electrical disturbance tests for measuring relays and protection equipment; Immunity to conducted disturbances induced by radio frequency fields (IEC 60255-22-6:2001); German version EN 60255-22-6:2001
电气继电器.第22-6部分:测量继电器和保护设备的电气干扰试验;对射频场引起的传导干扰的抗扰度(IEC 60255-22-6-2001);德文版EN 60255-22-6:2001
2002-03-01