A repetition rate, or operating frequency, lower than that allowed by the switching times is often specified for a relay.
继电器往往会以开关时间规定一个重复率，或者说是工作频率，使用时需低于该值。
The frequency changing relay is out of order. It can not change frequencies.
频率转换继电器故障，不能转换频率。
The over-current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. Frequency deviation caused by faulty operation is also prevented.
当电流超过限制值时，过负荷电流继电器自动保护振荡管和整流器，同时可以避免由不当操作所引起的频率漂移。
The appropriative test menu for "power frequency variation" is normally built in domestic relay protection test instruments, but it should be calculated and set beforehand for imported instruments.
国产继电保护试验仪一般都有针对工频变化量的专用测试菜单，而进口仪器则需预先计算和设置。
This paper introduces CPLD realization of frequency measure in digital relay protection equipment powered by DSP.
介绍了基于DSP的微机继电保护装置中频率测量的CPLD实现。
The frequency planning for a cellular system enhanced with two-hop fixed relay nodes (FRNs) is investigated.
研究了两跳固定中继蜂窝网的频率规划问题。
The discontinuity regions which influence the rf performance of high frequency are optimized and finally the rf performance of the relay is improved greatly within the working frequency.
对高频继电器RF性能影响较大的不连续结构进行优化，使高频继电器的RF性能在工作频率下得到较大的提升。
Optimal allocation of field structure in different yield levels in relay intercropping of maize and wheat could be confirmed by frequency analysis.
利用频数分析法可分别确定米麦间套作不同产量水平田间结构的优化配置。
This paper presents that the protection for the phase to phase fault should be composed of high frequency teleprotection channel and overreached distance relay.
提出只有将高频通道、超范围距离元件配合构成允许式纵联距离保护，才能保护同杆双回线跨线不接地故障。
The distributed parameters of signal path of high frequency relay are the main factors that influence the radio frequency (rf) performances of relay.
高频继电器信号路径的分布参数是影响继电器射频(RF)性能的主要因素。
In addition the system not only can test time of the time relay, but also can test the signal frequency.
该系统除了能够测量时间继电器时间段外，还可以测试信号的频率等。
In this paper a finite element model of hermetically sealed electromagnetic relay is built, through normal modes analysis and frequency response analysis, the vibration transitive path is studied.
军用密封电磁继电器是广泛应用于运载火箭、导弹、卫星等武器装备系统与航天系统中的关键元器件，工作环境的复杂性要求其必须具备良好的耐力学性能。
Also, this paper introduced the structure and setting of double relay stations in single frequency point and multi frequency point network.
除采取防雷措施外，论文针对该问题提出了双中继组网的方案，并介绍了单频点组网和多频点组网中双中继的构成和设置。
Also, this paper introduced the structure and setting of double relay stations in single frequency point and multi frequency point network.
除采取防雷措施外，论文针对该问题提出了双中继组网的方案，并介绍了单频点组网和多频点组网中双中继的构成和设置。
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