| 用于試驗電流400A以下的銅導線 |
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| 試驗電流范圍 |
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導線尺寸 |
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| A |
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mm2 |
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| 0～8 |
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1 |
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| 8～12 |
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1.5 |
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| 12～15 |
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2.5 |
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| 15～20 |
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2.5 |
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| 20～25 |
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| 25～32 |
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| 32～50 |
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| 50～65 |
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16 |
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| 65～85 |
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25 |
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| 85～100 |
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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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| 130～150 |
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50～60 |
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| 150～175 |
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70 |
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| 175～200 |
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95 |
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| 200～225 |
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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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| 對應于試驗電流的銅導線的標準截面積 |
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| 額定電流值(A) |
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試驗電流的范圍(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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Bitmap |
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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、使用特性及運行敷設條件 |
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| 1.電力電纜安裝注意事項 |
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| 1.1 電纜與熱力管道平行安裝時應保持2m的距離。交叉時應保持0.5m。 |
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| 1.2 電纜與其他管道平行或交叉安裝時要保持0.5m的距離。 |
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| 1.3 電纜直埋安裝時，1～35kV電纜直埋深度應不小于0.7m。 |
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| 1.4 10kV及以下電纜安裝時，相互凈距離不小于0.1m，10～35kV不小于0.25m，交叉 安裝時距離不小于0.5m。 |
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| 1.5 電纜敷設溫度不底于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，必須剝除半導電屏蔽層，操作時不得損傷絕緣，應避免刀痕 及凹凸不平的情況，必要時用砂紙磨平；屏蔽端部應平整，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，對短線路也應遵循這相原則， 避免三相不平衡運行時鋼鎧端部產生感應電動勢，甚至“打火”及燃燒護套等事 故。接地引出線要采用鍍錫編織銅線，和電纜銅帶連接時應用鉻鐵錫焊，不宜用 噴燈封焊，以免燒損絕緣。 |
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| ③ 三相銅帶屏蔽應分別地與地線相連，注意屏蔽接地線和鋼鎧接地線應分別引出， 相互絕緣，焊接地線的位置應盡量靠下。 |
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| 1.7 對電纜端頭和中間接頭的基本要求：a.導體連接良好；b.絕緣可靠。推薦采用輻照交聯熱收縮型硅橡膠絕緣材料；c.密封良好；d.足夠的機械強度，能適應各種運行條件。 |
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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致擊穿。 |
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| 1.9 電纜的裝卸必須使用吊車或叉車，禁止平運、平放。大型電纜安裝時須使用放纜車，以免電纜受外力損傷或因人工拖動而擦傷。 |
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| 1.10 電纜如因故不能及時敷設時，應將其放在干燥地方貯存，防止日光曝曬電纜端頭進水等。 |
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| 注意：電線電纜安裝應由熟悉電線電纜性能的安裝人員或專職技術人員擔任，如仍有不清事項，請向相關技術部門或宏亮電纜技術部咨詢。 |
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| 2 電纜的使用特性及運行敷設條件 |
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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 電纜導體的長期允許工作溫度：≤70℃ |
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| ② 短路時（最長持續時間不超過5s）電纜的最高工作溫度：160℃ |
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| ③ 電纜敷設后經受直流電壓3.5kV/15min不擊穿 |
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| ④ 在空氣中敷設 |
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| a.單芯電纜平行敷設時的中心距離：185mm及以下為電纜直徑的2倍：240mm2及以上 為90mm。 |
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| b.周圍環境溫度：30℃ |
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| c.不同環境溫度下載流量的校正系數： |
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主站蜘蛛池模板：