| 用于試驗(yàn)電流400A以下的銅導(dǎo)線 |
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| 試驗(yàn)電流范圍 |
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導(dǎo)線尺寸 |
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| A |
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mm2 |
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| 0～8 |
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| 8～12 |
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1.5 |
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2.5 |
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2.5 |
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25 |
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35 |
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| 100～115 |
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40(35) |
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| 115～130 |
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50 |
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50～60 |
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70 |
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95 |
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95～100 |
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| 225～250 |
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120 |
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| 250～275 |
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150 |
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| 275～300 |
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185 |
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240 |
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| 對(duì)應(yīng)于試驗(yàn)電流的銅導(dǎo)線的標(biāo)準(zhǔn)截面積 |
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| 額定電流值(A) |
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試驗(yàn)電流的范圍(A) |
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N 電纜mm2 |
N 銅母排尺寸 mm |
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| 500 |
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400～500 |
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2 150(16) |
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2 30×5(15) |
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| 630 |
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500～630 |
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2 185(18) |
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2 40×5(15) |
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| 800 |
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630～800 |
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2 240(21) |
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2 50×5(17) |
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| |
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| 1000 |
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800～1000 |
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2 60×5(19) |
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| 1250 |
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1000～1250 |
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2 80×5(20) |
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| 1600 |
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1250～1600 |
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2 100×5(23) |
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| 2000 |
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1600～2000 |
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3 100×5(20) |
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| 2500 |
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2000～2500 |
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4 100×5(21) |
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| 3150 |
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2500～3150 |
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3 100×10(23) |
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| 電力電纜安裝注意事項(xiàng)、使用特性及運(yùn)行敷設(shè)條件 |
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| 1.電力電纜安裝注意事項(xiàng) |
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| 1.1 電纜與熱力管道平行安裝時(shí)應(yīng)保持2m的距離。交叉時(shí)應(yīng)保持0.5m。 |
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| 1.2 電纜與其他管道平行或交叉安裝時(shí)要保持0.5m的距離。 |
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| 1.3 電纜直埋安裝時(shí)，1～35kV電纜直埋深度應(yīng)不小于0.7m。 |
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| 1.4 10kV及以下電纜安裝時(shí)，相互凈距離不小于0.1m，10～35kV不小于0.25m，交叉 安裝時(shí)距離不小于0.5m。 |
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| 1.5 電纜敷設(shè)溫度不底于0℃，彎曲半：多心電纜≥15(D+d)，單芯電纜≥20(D+d)(D 為電纜外徑，d為導(dǎo)體外徑)。 |
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| 1.6 kV及以上電纜接頭 |
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| ① 安裝電纜終端頭時(shí)，必須剝除半導(dǎo)電屏蔽層，操作時(shí)不得損傷絕緣，應(yīng)避免刀痕 及凹凸不平的情況，必要時(shí)用砂紙磨平；屏蔽端部應(yīng)平整，并要把石墨層（顆粒 ）清除干凈。 |
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| ② 塑料絕緣電纜端頭銅帶屏蔽和鋼鎧必須良好接地，對(duì)短線路也應(yīng)遵循這相原則， 避免三相不平衡運(yùn)行時(shí)鋼鎧端部產(chǎn)生感應(yīng)電動(dòng)勢(shì)，甚至“打火”及燃燒護(hù)套等事 故。接地引出線要采用鍍錫編織銅線，和電纜銅帶連接時(shí)應(yīng)用鉻鐵錫焊，不宜用 噴燈封焊，以免燒損絕緣。 |
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| ③ 三相銅帶屏蔽應(yīng)分別地與地線相連，注意屏蔽接地線和鋼鎧接地線應(yīng)分別引出， 相互絕緣，焊接地線的位置應(yīng)盡量靠下。 |
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| 1.7 對(duì)電纜端頭和中間接頭的基本要求：a.導(dǎo)體連接良好；b.絕緣可靠。推薦采用輻照交聯(lián)熱收縮型硅橡膠絕緣材料；c.密封良好；d.足夠的機(jī)械強(qiáng)度，能適應(yīng)各種運(yùn)行條件。 |
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| 1.8 電纜端頭必須防止水及其他腐蝕性材料的侵蝕，以防因水樹引起絕緣層老化而導(dǎo)致?lián)舸?/font> |
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| 1.9 電纜的裝卸必須使用吊車或叉車，禁止平運(yùn)、平放。大型電纜安裝時(shí)須使用放纜車，以免電纜受外力損傷或因人工拖動(dòng)而擦傷。 |
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| 1.10 電纜如因故不能及時(shí)敷設(shè)時(shí)，應(yīng)將其放在干燥地方貯存，防止日光曝曬電纜端頭進(jìn)水等。 |
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| 注意：電線電纜安裝應(yīng)由熟悉電線電纜性能的安裝人員或?qū)Ｂ毤夹g(shù)人員擔(dān)任，如仍有不清事項(xiàng)，請(qǐng)向相關(guān)技術(shù)部門或宏亮電纜技術(shù)部咨詢。 |
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| 2 電纜的使用特性及運(yùn)行敷設(shè)條件 |
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| 2.1 額定電壓0.6/kV聚乙烯絕緣電力電纜 |
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| ① 電纜導(dǎo)體的長(zhǎng)期允許工作溫度：≤70℃ |
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| ② 短路時(shí)（最長(zhǎng)持續(xù)時(shí)間不超過5s）電纜的最高工作溫度：160℃ |
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| ③ 電纜敷設(shè)后經(jīng)受直流電壓3.5kV/15min不擊穿 |
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| ④ 在空氣中敷設(shè) |
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| a.單芯電纜平行敷設(shè)時(shí)的中心距離：185mm及以下為電纜直徑的2倍：240mm2及以上 為90mm。 |
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| b.周圍環(huán)境溫度：30℃ |
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| c.不同環(huán)境溫度下載流量的校正系數(shù)： |
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