220千伏，1～630A电缆直径多少 630A的电流选多大的电缆
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绛旓細鍚屾剰涓婇潰鏈嬪弸鐨勭湅娉曪紝鎬诲紑鍏充笉瑕佽婕忕數淇濇姢鍣紝灏嗘紡鐢典繚鎶ゅ櫒瑁呭湪鏈夐渶瑕佺殑鍒嗚矾涓娿傛诲紑鍏冲簲閫夌敤棰濆畾鐢垫祦澶т簬 (220KW/0.8)/(380V/1000)/1.732=417.8A鐨勭┖姘斿紑鍏炽婁綘璇寸殑鏂矾鍣ㄣ嬶紝鎬诲绾垮鐢ㄤ笁鐩稿洓鐨鐢电紗锛鐩哥嚎鍙互鑰冭檻閫夌敤300骞虫柟姣背鐨勭數缂嗐
绛旓細濡傛灉璁板綍鏄剧ず杩囪浇锛屼絾鏄疄闄呰礋杞界數娴佽繙灏忎簬闀垮欢鏃跺姩浣滅數娴佸硷紝鍒欐槸寮鍏宠鍔ㄤ綔銆傛垨鑰呭紑鍏冲瓨鍦ㄨ川閲忛棶棰樸備綘涔熷彲浠ユ鏌ヤ竴涓嬪紑鍏冲懆鍥寸殑姣嶆帓銆鐢电紗杩炴帴鑺傜偣鏄惁鏉惧姩瀵艰嚧娓╁害杩囬珮寮曡捣杩囪浇璺抽椄~杩樻槸鎵句笉鍒伴棶棰橈紝鍙互灏嗛暱寤舵椂鍔ㄤ綔鐢垫祦璋冮珮涓鐐癸紝鍦ㄨ瀵涓涓嬨
绛旓細璺濈澶暱锛屾渶濂借繎涓浜锛屼竴涓ょ櫨绫筹紝300鏂圭殑閾滅嚎灏卞鐢紱閾滅嚎鐢甸樆鐜0.0175 锛屽帇闄嶄笉瓒呰繃20V锛堝帇闄嶅お楂樿澶囦笉涓瀹氬甫鐨勮捣鏉ワ級锛屽垯鐢甸樆=20/630=0.0317娆э紝鍒鐢电紗鎴潰绉 0.0175*1300/0.0317=717 鏂癸紝瑕佷袱鏍400鐨勭數缂嗕竴璧风敤
绛旓細鐭ラ亾浜嗙數娴侊紝灏辫兘纭畾閾滅嚎鐨勭嚎寰勬垨闈㈢Н浜嗐傚浜嗭紝浣犳墍璇寸殑鐢靛帇绛夌骇鏄氦娴380V鐨勫悧锛熶氦娴380V锛岀數娴佹槸630A锛岄渶瑕120骞虫柟姣背浠ヤ笂閾滅嚎闈㈢Н銆傞氬父鎯呭喌涓锛1骞虫柟姣背姝ｅ父浣跨敤涓6A鐨勭數娴侊紝閭ｄ箞630A闇瑕侊細630/6=105锛屽嵆閫夌敤105骞虫柟姣背浠ヤ笂鐨勯摐绾匡紝鑰冭檻鐩墠涓浜鐢电紗璐ㄩ噺涓庣敤鏂欓棶棰橈紝閫120骞虫柟姣背宸﹀彸鐨勯摐绾垮惂銆
绛旓細璺濈澶暱锛屾渶濂借繎涓浜锛屼竴涓ょ櫨绫筹紝300鏂圭殑閾滅嚎灏卞鐢紱閾滅嚎鐢甸樆鐜0.0175 锛屽帇闄嶄笉瓒呰繃20V锛堝帇闄嶅お楂樿澶囦笉涓瀹氬甫鐨勮捣鏉ワ級锛屽垯鐢甸樆=20/630=0.0317娆э紝鍒鐢电紗鎴潰绉 0.0175*1300/0.0317=717 鏂癸紝瑕佷袱鏍400鐨勭數缂嗕竴璧风敤
绛旓細210涓崈鐡﹀畠鐨勭數娴佷负375A锛岃鐢185鐨勯摑鐢电紗銆傛牴鎹姛鐜嘝=1.732UIcos蠁鏈塈=P/(1.732Ucos蠁)=210/(1.732x0.38x0.85)=375A(鍔熺巼鍥犳暟鍙0.85)銆傛牴鎹彛璇锛岀數缂鎴潰浼拌瑕佸湪100骞虫柟浠ヤ笂锛屽洜姝ゆ瘡骞虫柟鐨勫畨鍏ㄧ數娴佷负2A锛屾墍浠ョ數缂嗙殑骞虫柟鏁=375/2=187骞虫柟銆傛牴鎹數缂嗚鏍艰〃锛屽彲閫185鐨勯摑鐢电紗鎴150鐨...
绛旓細鍙互锛屾病闂锛屽簲璇ュぇ浜庡惎鍔ㄧ數娴1.2~1.5鍊嶏紙鐬姩锛夛紝浣嗙數鏈鸿繍琛屼繚鎶ゅ簲璇ユ槸棰濆畾鐢垫祦鐨1.2~1.5鍊嶈屼笖鍏锋湁鍙嶆椂闄愮壒鎬с傜◢澶т簬630A鏂矾鍣ㄥ姩浣滀粎鐩稿綋浜庣數瀵垮懡锛屾病褰卞搷銆傜數鏈虹患淇濆簲璇ユ湁杩欑淇濇姢鍔熻兘銆
绛旓細璐熻浇棰濆畾500A鐢垫祦锛岃窛绂300绫筹紝浣跨敤鍗曟牴鐢电紗鐨勬埅闈㈣嚦灏戣185骞虫柟鐨勯摐绾匡紝鑻ュ疄闄呯敤鐢电數娴500A锛岀煭鏃舵湁瓒呰繃500A鐨勶紝寤鸿浣跨敤240骞虫柟閾滅嚎
绛旓細315KW鐨勭數娴佹槸630A宸﹀彸锛屾弧杞界殑鐢电紗绾鏄細浜屾牴150鐨勬垨鑰呬簩鏍185鐨鐢电嚎銆286KW鐢垫祦鏄557A宸﹀彸锛岀敤浜屾牴150鐨勭數绾 264KW鐢垫祦鏄501A锛岀敤浜屾牴120鐨勭數绾裤220KW涔熺敤120鐨勭數绾 杩欐槸鑰冭檻浣犵殑璐熻浇鏈澶э紝鍙婄數绾跨殑瀹夊叏杞芥祦閲忋
绛旓細浣犲ソ锛丄C 鏄氦娴400浼 630A鏄寚棰濆畾鐢垫祦630
