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ground wire 【電學】地線。

ground zero

In view of the problems in the design of the large andmedium - sized indoor substations built by guangzhou power bureau in recent years , points for attention in the design of indoor substations are expounded in terms of ventilation , cable channel , reservation of hangers and space for transportation and installation , ground wire , lighting for the whole substation , etc 本文介紹了12 . 5萬千瓦汽輪發電機定子扇形片雙胞胎沖模的工藝設計和制造技術,以及模具在制造過程中常見的質量問題和預防措施.指出采用合理可行的方法對提高模具制造質量和縮短產品制造周期的重要作用

This can fully consider the effect of the structure of transmission line and the selection of lighting parameter etc . by calculating and analyzing various of factor that affect the lightning tripping probability of 500kv double circuit transmission line , we can draw the conclusions : the result by intersecting method is more accord with the practicality circumstance than by existing standard methods , using unbalance high insulation and reverse sequence of wire can reduce the contemporary outage rate of double circuit line , reducing the footing resistance is one of the most efficiency method to reduce the back stroking rate of double circuit transmission line , the double back stroking rate and the single back stroking rate will fall by three ground wire , when the footing resistance is 10 ohm , the back stroking rate by three ground wire is 83 percent of by two ground wire 在分析輸電線路繞擊耐雷性能時,對線路的雷電屏蔽問題進行了分析,提出對擊距法進行改進,充分考慮了風速的影響因素,編寫了具有工程實用價值的計算線路繞擊耐雷水平的程序,此方法可以充分考慮線路結構和雷電參數等對繞擊率的影響。通過對影響500kv同桿雙回線路雷擊跳閘率的各種因素進行了計算和分析,得到以下結論:采用相交法的計算結果比定義法更符合實際運行情況。采用不平衡高絕緣方式和導線逆相序排列可以大大降低雙回同時跳閘率。

The change tradition ground wiring way , it is advantageous for the construction , the installment is convenient , the material quality bears the jail , has : artistic , the fire protection , the anticorrosion , is moisture - proof , characteristic and so on insulation , can be a very good solution to solve the explosive line cables 改變傳統地面布線方式,它便于施工、安裝便捷,材質耐牢,更具有:美觀、防火、防腐、防潮、絕緣等特點,能很好的解決線纜裸露的問題。

Current sensors play a very important part in the on - line insulation monitoring of electric power transmission . generally they are used to measure leakage current of ground wire . at present , use current transformer as insulation monitoring current sensor mostly 電流傳感器在電氣設備絕緣在線監測系統中占有重要的位置,它一般通過檢測設備接地線電流來監測泄漏電流,目前多采用電流互感器作為絕緣監測用電流傳感器。

3 foot is power source terminal at eight - phase left - hand end , they are zero curve 、 live wire 、 ground wire or “ _ ” 、 “ + ” and ground , 5 、 6 foot are lose electric alarming fan - out ( replay normal close point , the equipment cut - out after losing electricity 左端8位端子的1 、 2 、 3腳為電源端子,分別為零、火、地或“ ” “ ” 、地; 5 、 6腳為失電告警輸出端(繼電器常閉點,裝置失電后斷開) 。

Abstract : based on the safty and reliability of electronic equipment , this paper expounds the importance of ground , and introduces the knowledges of ground in several aspects , such as ground type , function of ground wire and the design of ground 文摘:從電子設備的安全性和可靠性出發,論述了其接地的重要性,并從接地類型、地線作用,接地設計幾方面介紹了有關接地方面的知識。

Ucq cable formed by three insulated shielded main wire and one grounding wire with semiconducting rubber layer , interwist to cable encircling semiconducting rubber core and outside wraped yellow chloroprene rubber sheath 型電纜由3個帶有絕緣屏蔽的主線芯和一個包覆半導電橡皮層的地線組成,圍繞半導電橡皮墊芯絞合成纜,外面擠包黃色氯丁橡皮護套。

There are two structure of up cable : four cores and five cores , formed by three main wire and one grounding wire one core is control wire in five cores cable , interwist to cable encircling semiconducting core and outside wraped black chloroprene rubber sheath 5芯電纜中有一芯為控制線。圍繞半導電墊芯絞合成纜,外面擠包黑色氯丁橡皮護套。

Any incorrect operation to connect a ground wire ( line 5 ) of the substation in one bus will badly affect the whole system , i . e . : any substation in corresponding 1 - 20 call master station will be difficult or fail to select 為確保防暴分機的正常安裝,將隨機配送的安裝底盒支撐桿放進安裝底盒內(如上圖所示) ,能有效防止塑料底盒向內變形。

Ucpq cable with 11 cores formed by six insulated shielded main wire one control unit interwisted by 4 control wire cores and one grounding wire with semiconducting rubber layer , outside wraped black chloroprene rubber sheath 根控制線芯絞合的控制單元以及一個擠包半導電橡皮的地線組成,外面擠包黑色氯丁橡皮護套。

There are two structure of up cable : four cores and five cores , formed by three main wire and one grounding wire one core is control wire in five cores cable , interwist to cable encircling core and outside wraped black rubber sheath 5芯電纜中有一芯為控制線。圍繞墊芯絞合成纜,外面擠包黑色氯丁橡皮護套。

Insulated shield and ground wire : insulated layer which outside of insulated wire core composed by semiconductive electric layer tinning copper wire and fibre material 絕緣屏蔽與地線:在絕緣線芯外面由半導電層及鍍錫銅線與纖維材料交叉編織組成的屏蔽層。

Ground the water heater by connecting a grounding wire from the electrical service ground terminal to the green grounding screw in the junction box of the water heater 通過將電氣部件上的接地端子連接到熱水器接線盒里綠色接地螺絲上,實現熱水器的接地。

The dead - end is designed to terminate optical ground wire opgw while minimizing any compression stresses that may be transferred to the core or optical elements within 此線夾不但能保護光纖不受損傷,傳遞軸向拉力,還能增加光纜抗振能力,延長使用壽命。

Ugefp and ugefhp cables composed by 3 insulated shielded main wire core and 1 ground wire . finished cable wraped black chloroprene rubber sheath 個地線組成。成纜后外面擠包黑色氯丁橡皮護套。

Forming cable : main wire core grounding wire control wire intertwist encircling rubber core . sheath : adopt rubber of type xh03a in gb7594 . 287 成纜:按右向絞合成纜,無控制單元的中心加填芯。

Identification of wire core : main wire core is red green white , grounding wire is black , control wire is white 線芯識別:采用絕緣分色識別,主線芯紅綠白。地線黑色,控制線打印號碼。

To avoid electrical shock hazards , never operate the sewing machine with the ground wire for the power supply removed 為了防止觸電事故,卸下電源地線的狀態,請不要運轉縫紉機。

Pay attention to the correct installation of ground wire ( line 5 ) when connecting lines with substation 預埋安裝塑料底盒時,一定要待水泥干燥后,才能預埋安裝塑料底盒。