low current arc 中文意思是什麼
low current arc
解釋
小電流電弧-
New designed auto tracing arc eliminating device based on this technique contents more technology, which has sample circuit, wide tuning scope, quick response and low noise. this paper firstly introduces neutral grounding histroy. by analyzing the syntony grounding theory, the transient and stable process of one - phase grounding fault, the threaten to secure run of power system and the importance of exact compensation for capacitive current are cognized
論文中首先介紹了中性點接地方式的發展過程，通過對諧振接地原理和單相接地故障的暫態、穩態分析，認識到接地故障對系統安全運行的危害，通過消弧線圈對接地電容電流的迅速準確補償是減小故障危害的最主要手段。 -
The variable polarity power supply circuit uses two stages full - bridge inverter, the former inverter is regarded as a constant - current source with fast dynamic response, and supplys energy for the second one, and the latter one is to produce variable polarity current excellently, and low - frequency pulse current by variable polarity power supply is used to reduce input energy and control the shape of weld bead while welding. a series of high - frequency pulse current is superposed on direct - current - electrode - negative ( dcen ) current through the high - frequency pulse power supply, which is used to compress the arc and improve process of crystallization
其中變極性電源採用二次全橋逆變結構，一次逆變提供快速的響應速率並給二次逆變提供能量，二次逆變提供良好的變極性性能，使輸出能量最優化，並用其低頻電流特性減小電弧線能量，控制焊縫成形;高頻脈沖電源提供的高頻電流疊加在反極性電流dcen上，利用電流的高頻特性壓縮電弧，改善焊縫金屬結晶過程。 -
As the electric power & electronic technology is used widely in low voltage area, the properties of voltage and current in normal working conditions of electrical appliance closely resemble or mimic the un - normal properties created by the arc fault, so it is difficult to distinguish between normal and un - normal cases
隨著電力電子技術在低壓領域的廣泛應用，一些電器正常工作時的電壓電流特性與故障電弧的典型特性相似，給檢測工作帶來了難度。 -
The capacitor has advantages of low dissipation, high insulation resistance, good self - healing character, and steady electricity performance, anti - striking current, strong over - carrying capacity, etc. it is assembled sith inner hidden discharge resistance. it is applied in high or low pressure sodium lamp and mercury - arc lamp for the help of power factor compensation
斷開電流允許時間：在0 . 5秒內的8個半周波前跳閘絕緣電壓ul1699第59節：線路與負載之間1000v ， 1分鐘 -
Cerium tungsten electrodes have easy arc starting performance and low are keeping current. it is especially used to weld pipes, stainless steel articles and fine miniparts
鈰鎢電極在低電流條件下有著優良的起弧性能，維弧電流較小，因此，它常常用於管道、不銹鋼製品和細小精緻部件的焊接。 -
The tap - changer is made with solid state relay as its working mechanism and controlled by microprocessor. this switch has totally cancelled the mechanical drive organization, by the microprocessor according to the voltage of second side microprocessor decide the working condition of solid state rely, high regulation speed, need not transition resistor, rush current is low. operating frequently ; there is no electric arc to produce, can put in the fuel tank of the voltage transformer directly ; the structure is simple, the fabrication cost is low, benefit and use widely among the voltages transformer of distribution
其中的有載調壓分接開關，它是一種完全由固態繼電器作為分接開關執行機構，由單片機控制的有載自動調壓的變壓器分接開關。該開關完全取消了機械傳動機構，由單片機根據變壓器二次側電壓的高低，決定與變壓器各分接頭聯接的固態繼電器的工作狀態。調節速度快，改變分接頭時不需過渡電阻，沖擊電流小，可頻繁操作；無電弧產生，可以直接放在變壓器油箱中；結構簡單，造價低，便於在配電變壓器中推廣使用。 -
Dry, solid insulating materials - resistance test to high - voltage, low - current arc discharges
乾性固體絕緣材料.高電壓低電流電弧狀放電電阻試驗 -
Testing of electrical insulating materials ; low voltage ; high current arc resisting test
電氣絕緣材料檢驗.低壓.耐高電流電弧檢驗 -
Dry, solid insulating materials - resistance test to high - voltage, low current arc discharges
乾燥實心絕緣材料.耐高壓低電流電弧放電的試驗 -
Dry, solid insulating materials - resistance test to high - voltage, low - current arc discharges iec 61621 : 1997 ; german version en 61621 : 1997
乾燥的固體絕緣材料.耐高壓低電流電弧放電的電阻試驗 -
Dry, solid insulating materials. resistance test to high - voltage, low - current arc discharges
乾性固體絕緣材料.高壓低電流弧光放電阻抗試驗 -
Test method for high - voltage, low - current, dry arc resistance of solid electrical insulation
固體電絕緣的高壓低電流和干電弧電阻試驗方法
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