periodic voltage 中文意思是什麼
periodic voltage
解釋
周期電壓-
To calculate the minimum voltage, take 70 % of the nominal voltage. for periodic applications, take 30 % of the nominal full load voltage
計算最小電壓值時，通常取其額定電壓的70 % 。由於周期使用，去除掉額定滿負電壓的30 % 。 -
Two serious accidents occurred in recent months, both involving short - circuiting of live parts on low voltage electrical installations. in each case, the registered electrical workers ( rews ) did switch off the mains and essential supplies at the consumer s switchboard in order to carry out periodic maintenance inspection. however, they did not isolate the electricity supply from the power company
在這兩宗個案中，注冊電業工程人員在進行定期檢查時，並未聯絡電力公司切斷來電電源，而祗是將用戶開關掣板的總掣及后備電源關掉，所以這些電掣的來電方向，仍然是帶電。 -
Basic principle, hardware structure and function of digital ic electrical meter are expounded. the meter not only has the features of low power consumption and low costing, but has the protective functions against over current, over voltage and electricity leakage. principle and calculation methods of electricity power, periodic compensation and precision compensation are also explained in detail
詳細地敘述了數字式ic卡電度表的基本原理、硬體結構和基本功能，該電度表不僅具有低功耗、低成本的特點，過流、過壓及漏電保護功能，而且具有結構簡單、運行可靠、性能價格比高等優點.最後詳細地介紹了電能計量、精度補償、周期補償的原理及演算法的實現 -
For ac discrete digital signal, the zero - calculating method is applied to calculate the true zero in the periodic signal. for the measurement of ac and dc voltage spectrum, the faster fourier transform ( fft ) is used. to measure dc voltage ripple spectrum and frequency modulation of ac voltage, the digital filter is used
其中對于交變的離散數字量，採用零點撿出技術計算周波信號的真實過零點；對于交直流電壓頻譜，採用快速傅立葉變換進行頻譜分析；對于直流電壓脈動和頻率調制，採用數字濾波器進行濾波后再做分析處理。
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