《電線電纜行業(yè)大全》ppt課件

1、昆山宏儒工程電力電纜引見電力電纜引見電力電纜35KV及以下油浸紙絕緣電力電纜粘性浸漬絕緣電力電纜不滴流浸漬劑紙絕緣電力電纜橡皮絕緣電力電纜塑料絕緣電力電纜聚氯乙烯絕緣電力電纜交聯(lián)聚乙烯絕緣電力電纜35KV及以上交聯(lián)聚乙烯絕緣電力電纜充油電纜電力電纜的分類1 電力電纜種類電力電纜種類昆山宏儒工程電力電纜型號(hào)中字母與數(shù)字的意義特性絕緣種類導(dǎo)體內(nèi)護(hù)層特征外護(hù)層十位個(gè)位ZR阻燃TZR特種阻燃NH耐火DL低鹵WL無鹵Z紙X橡皮V聚氯乙烯Y聚乙烯YJ交聯(lián)聚乙烯L鋁銅芯不標(biāo)注V聚氯乙烯內(nèi)護(hù)套 Y聚乙烯內(nèi)護(hù)套H普通橡套F氯丁橡套L鋁包Q鉛包D不滴流F分相護(hù)套P屏蔽Z直流CY充油無鎧2雙層鋼帶鎧裝3細(xì)鋼絲鎧裝4

2、粗鋼絲鎧裝0無外被套1纖維外被套2聚氯乙烯外護(hù)套3聚乙烯外護(hù)套昆山宏儒工程2.2 2.2 絕緣資料及護(hù)套的選擇絕緣資料及護(hù)套的選擇優(yōu)點(diǎn)絕緣性能良好，制造工藝簡(jiǎn)便，價(jià)錢較低，無論明敷或穿管都可取代橡皮絕緣線，可節(jié)約大量橡膠和棉紗。缺陷對(duì)氣候順應(yīng)性能較差，低溫時(shí)變硬發(fā)脆，高溫或日光照射下增塑劑容易揮發(fā)而使絕緣老化加快。2.2.2 聚氯乙烯絕緣及護(hù)套電力電纜優(yōu)點(diǎn)制造工藝簡(jiǎn)便，沒有敷設(shè)高差限制，分量輕，彎曲性能好，接頭制造簡(jiǎn)便，耐油，耐酸堿腐蝕，不延燃；具有內(nèi)鎧裝構(gòu)造，使鋼帶或鋼絲免受腐蝕；價(jià)錢廉價(jià)。缺陷絕緣電阻較油浸紙絕緣電纜低，介質(zhì)損耗較高，因此6KV重要回路電纜，不宜用聚氯乙烯絕緣型電力電纜。2

3、.2.3 交聯(lián)聚乙烯絕緣聚氯乙烯護(hù)套電力電纜優(yōu)點(diǎn) 性能優(yōu)良，構(gòu)造簡(jiǎn)單，制造方便，外徑小，分量輕，載流量大，敷設(shè)方便，除不受高差限制外，其終端和接頭方便，完全可以替代紙絕緣電纜。缺陷 2.2.1 塑料絕緣電線昆山宏儒工程2.3 2.3 鎧裝選擇：鎧裝選擇： 各種電纜外護(hù)層及鎧裝的適用敷設(shè)場(chǎng)所護(hù)套或外護(hù)層鎧裝代號(hào)敷設(shè)方式環(huán)境條件室內(nèi)電纜溝電纜橋架隧道管道豎井埋地水下火災(zāi)危險(xiǎn)移動(dòng)多爍石普通腐蝕嚴(yán)重腐蝕裸鉛護(hù)套鉛包無Q 普通橡套無 不延燃橡套(耐油)無F 聚氯乙烯護(hù)套無V 聚乙烯護(hù)套無Y 普通外護(hù)層(僅用于鉛護(hù)套)裸鋼帶20 鋼帶2 裸細(xì)鋼絲30細(xì)鋼絲3 裸粗鋼絲50粗鋼絲5 昆山宏儒工程護(hù)套或外護(hù)層

4、鎧裝代號(hào)敷設(shè)方式環(huán)境條件室內(nèi)電纜溝電纜橋架隧道管道豎井埋地水下火災(zāi)危險(xiǎn)移動(dòng)多爍石普通腐蝕嚴(yán)重腐蝕一級(jí)防腐外護(hù)層裸鋼帶120鋼帶12裸細(xì)鋼絲130細(xì)鋼絲13裸粗鋼絲150粗鋼絲15二級(jí)防腐外護(hù)層鋼帶22細(xì)鋼絲23粗鋼絲25內(nèi)鎧裝塑料全塑電纜鋼帶2229 細(xì)鋼絲39 粗鋼絲59 各種電纜外護(hù)層及鎧裝的適用敷設(shè)場(chǎng)所昆山宏儒工程注：1.“表示適用；“表示外被層為玻璃纖維時(shí)適用；無標(biāo)志那么不引薦采用。 2. 裸金屬護(hù)套一級(jí)防腐外護(hù)層由瀝青復(fù)合物加聚氯乙烯護(hù)套組成。 3.鎧裝一級(jí)防腐外層由襯墊層、鎧裝層、外被層組成。襯墊層由兩個(gè)瀝青復(fù)合 物、聚氯乙烯帶和浸漬皺紙帶的防水組合層組成；外被層由瀝青復(fù)合物、浸漬

5、電纜 或浸漬玻璃纖維和防止粘合的涂料組成。 4.裸鎧裝一級(jí)防腐外護(hù)層的襯墊層與鎧裝一級(jí)外護(hù)層的襯墊層一樣，但沒有外 被層。 5.鎧裝二級(jí)防腐外護(hù)層的襯墊層與鎧裝一級(jí)外護(hù)層的襯墊一樣；鋼帶和細(xì)鋼絲 鎧裝的外被層由瀝青復(fù)合物和聚氯乙烯護(hù)套組成；粗鋼絲鎧裝的鍍鋅鋼絲外面擠包一 層聚氯乙烯護(hù)套或其它同等效能的防腐涂層，以維護(hù)鋼絲免受外界腐蝕。 6.如需求用于濕熱帶地域的防霉特種護(hù)層可在型號(hào)規(guī)格后加代號(hào)“TH。 7.單芯鋼帶鎧裝電纜不適用于交流線路。昆山宏儒工程2.4 2.4 電線、電纜截面的選擇電線、電纜截面的選擇電線、電纜截面選擇應(yīng)滿足允許溫升、電壓損失、機(jī)械強(qiáng)度等要求。2.4.1 按溫升選擇截面為

6、保證電線、電纜的實(shí)踐任務(wù)溫度不超越允許值，電線、電纜按發(fā)熱條件的允許長(zhǎng)期任務(wù)電流以下簡(jiǎn)稱載流量，不應(yīng)小于線路的任務(wù)電流。2.4.2 按經(jīng)濟(jì)電流密度校驗(yàn)截面選擇經(jīng)濟(jì)截面可按年費(fèi)用支出最小原那么來確定，年費(fèi)用支出計(jì)算公式為 B=0.11Z+1.11N 式中Z投資； N年運(yùn)轉(zhuǎn)費(fèi)，包括電能損耗費(fèi)、折舊費(fèi)等，運(yùn)用年限按25年計(jì)算。 輸電線路經(jīng)濟(jì)電流密度 單位：A/mm2最大負(fù)荷利用小時(shí)(h/a)5000(三班制)架空線裸鋁絞線、銅芯鋁絞線1.651.150.90裸銅絞線3.002.251.75電纜鋁芯1.921.731.54銅芯2.502.252.00昆山宏儒工程2.4.3 按電壓損失校驗(yàn)截面線路電壓損

7、失允許值名 稱允許電壓損失%從配電變壓器二次側(cè)母線算起的低壓線路從配電變壓器二次側(cè)母線算起的供應(yīng)有照明負(fù)荷的低壓線路從11035/106KV變壓器二次側(cè)母線算起的106KV母線5355昆山宏儒工程2.4.4 按機(jī)械強(qiáng)度校驗(yàn)截面 按機(jī)械強(qiáng)度導(dǎo)線允許的最小截面 單位：mm2用途導(dǎo)線最小允許截面鋁銅銅芯軟線裸導(dǎo)線敷設(shè)于絕緣子上低壓架空線路1610絕緣導(dǎo)線敷設(shè)于絕緣子上，支點(diǎn)間隔L(m)室內(nèi) L22.51.0室外L22.51.52L642.56L156415L25106固定敷設(shè)護(hù)套線，軋頭直敷2.51.0挪動(dòng)式用電設(shè)備用導(dǎo)線消費(fèi)用1.0生活用0.2照明燈頭引下線工業(yè)建筑屋內(nèi)2.50.80.5屋外2.5

8、1.01.0民用建筑、室內(nèi)1.50.50.4絕緣導(dǎo)線穿管2.51.01.0絕緣導(dǎo)線槽板敷設(shè)2.51.0絕緣導(dǎo)線線槽敷設(shè)2.51.0昆山宏儒工程聚氯乙烯絕緣電力電纜規(guī)格范圍型號(hào)芯數(shù)標(biāo)稱截面(mm2)型號(hào)芯數(shù)標(biāo)稱截面(mm2)銅芯鋁芯0.6/1(KV)3.6/6(KV)銅芯鋁芯0.6/1(KV)3.6/6(KV)VV11.5800101000VV31.530010300VYVYVLV2.51000101000VLY2.530010300VLYVLYVV22VLV22101000101000VV22VLV22430010300VV23VLV23VV23VLV23VV21.5185VV32VLV324

9、30016300VYVV33VLV33VLV2.5185VV42VLY42430016300VLYVV43VLY43昆山宏儒工程2.5 2.5 電力電纜產(chǎn)品和型號(hào)電力電纜產(chǎn)品和型號(hào)聚氯乙烯絕緣電力電纜型號(hào)、稱號(hào)、敷設(shè)場(chǎng)所型 號(hào)名 稱敷設(shè)場(chǎng)所銅芯鋁芯VVVLV聚氯乙烯絕緣聚氯乙烯護(hù)套電力電纜可敷設(shè)在室內(nèi)、隧道、電纜溝、管道、易燃及嚴(yán)重腐蝕地方，不能接受機(jī)械外力作用VYVLY聚氯乙烯絕緣聚乙烯護(hù)套電力電纜可敷設(shè)在室內(nèi)、管道、電纜溝及嚴(yán)重腐蝕地方，不能接受機(jī)械外力作用VV22VLV22聚氯乙烯絕緣鋼帶鎧裝聚氯乙烯護(hù)套電力電纜可敷設(shè)在室內(nèi)、隧道、電纜溝、地下、易燃及嚴(yán)重腐蝕地方，不能接受拉力作用VV2

10、3VLV23聚氯乙烯絕緣鋼帶鎧裝聚氯乙烯護(hù)套電力電纜可敷設(shè)在室內(nèi)、電纜溝、地下及嚴(yán)重腐蝕地方，不能接受拉力作用VV32VLV32聚氯乙烯絕緣細(xì)鋼絲鎧裝聚氯乙烯護(hù)套電力電纜可敷設(shè)在地下、豎井、水中及易燃及嚴(yán)重腐蝕地方，不能接受大拉力作用VV33VLV33聚氯乙烯絕緣細(xì)鋼絲鎧裝聚乙烯護(hù)套電力電纜可敷設(shè)在地下、豎井、水中及嚴(yán)重腐蝕地方，不能接受大拉力作用VV42VLV42聚氯乙烯絕緣粗鋼絲鎧裝聚氯乙烯護(hù)套電力電纜可敷設(shè)在豎井、易燃及嚴(yán)重腐蝕地方，能接受大拉力作用VV43VLV43聚氯乙烯絕緣粗鋼絲鎧裝聚乙烯護(hù)套電力電纜可敷設(shè)在豎井及嚴(yán)重腐蝕地方，能接受大拉力作用2.5.1 聚氯乙烯絕緣電力電纜昆山宏

11、儒工程型號(hào)芯數(shù)標(biāo)稱截面(mm2)型號(hào)芯數(shù)標(biāo)稱截面(mm2)銅芯鋁芯0.6/1(KV)3.6/6(KV)銅芯鋁芯0.6/1(KV)3.6/6(KV)VV22VLV22241853+24185VV23VLV23VVVLVVVVLV3+14300VV22VLV22VYVLYVV22VLV224+1VV23VLV32VVVLVVV32VLV32VV22VLV22VV42VLV42VVVLV441855VYVLYVV22VLV22VVVLVVV23VLY23VV22VLV22VV32VLV32VV42VLV42聚氯乙烯絕緣電力電纜規(guī)格范圍昆山宏儒工程昆山宏儒工程絕緣的標(biāo)稱厚度導(dǎo)體標(biāo)稱截面(mm2)額定電

12、壓(kv)0.6/11.8/33.6/66/6 6/10絕緣標(biāo)稱厚度(mm)1.5、2.50.84、611012.23.441612.23.44251.22.23.44351.22.23.4450、701.42.23.4495、1201.62.23.441501.82.23.4418522.23.442402.22.23.443002.42.43.444002.62.63.445008002.82.83.441000 333.44 昆山宏儒工程塑料外套的標(biāo)稱厚度護(hù)套前假定直徑塑料外套護(hù)套前假定直徑塑料外套護(hù)套前假定直徑塑料外套標(biāo)稱厚度標(biāo)稱厚度標(biāo)稱厚度12.81.841.544.22.572.9

13、75.73.612.915.71.844.347.12.675.878.53.715.818.51.847.249.92.778.651.83.818.621.41.850.052.82.881.584.23.921.524.21.852.955.72.984.387.1424.327.11.955.858.5387.289.94.127.229.9258.661.43.190.092.84.230.032.82.161.564.23.292.995.74.332.935.72.264.367.13.395.898.54.435.838.52.367.269.93.498.6101.44.53

14、8.641.42.470.072.83.5昆山宏儒工程2.5.2 交聯(lián)聚乙烯絕緣電力電纜0.6/1kv交聯(lián)聚乙烯絕緣電力電纜型號(hào)、稱號(hào)及適用范圍型號(hào)稱號(hào)用途YJVYJLV銅芯或鋁芯交聯(lián)聚乙烯絕緣、聚氯乙烯護(hù)套電力電纜敷設(shè)在室內(nèi)、隧道內(nèi)及管道中，可經(jīng)受一定的敷設(shè)牽引，但電纜不能接受機(jī)械外力作用，單芯電纜不允許敷設(shè)在磁性資料管道中YJV22YJLV22銅芯或鋁芯交聯(lián)聚乙烯絕緣、聚氯乙烯護(hù)套內(nèi)鋼帶鎧裝電力電纜敷設(shè)在室內(nèi)、隧道內(nèi)、管道及埋地敷設(shè)，電纜能接受機(jī)械外力但不能接受大的拉力YJV32YJLV32銅芯或鋁芯交聯(lián)聚乙烯絕緣、聚氯乙烯護(hù)套內(nèi)鋼絲鎧裝電力電纜敷設(shè)在高落差地域或礦井中、水中，電纜能接受相

15、當(dāng)?shù)睦蜋C(jī)械外力作用昆山宏儒工程0.6/1kv 交聯(lián)聚乙烯絕緣電力電纜產(chǎn)品規(guī)格型號(hào)芯數(shù)標(biāo)稱截面(mm2)型號(hào)芯數(shù)標(biāo)稱截面(mm2)YJV YJLV11.0630YJV YJV223+14400YJV32 YJLV YULV22YJLV32YJV YJV22 YJV3221.0400YJV YJV22 YJV3241.0400YJLV YJLV22 YJLV32YJLV YJLV22YJLV32YJV YJV22 YJV3231.0400YJV YJV22 YJV3251.0400YJLV YJLV22 YJLV32YJLV YJLV22YJLV32昆山宏儒工程0.6/1kv交聯(lián)聚乙烯絕緣電力

16、電纜的主要技術(shù)性能電纜額定電壓0.6/1kv絕緣熱延伸實(shí)驗(yàn)20015min20N/cm2 壓力載荷下最大伸長(zhǎng)率不大于(%)175線芯直流電阻按GB3957-83或IEC228-78冷卻后最大永久伸長(zhǎng)率(%)15工頻5min耐壓實(shí)驗(yàn)(kv)3.5kv不擊穿4h工頻耐壓實(shí)驗(yàn)(kv)不擊穿2.4昆山宏儒工程0.6/1kv 單芯交聯(lián)聚乙烯絕緣聚氯乙烯護(hù)套電力電纜 標(biāo)稱截面絕緣標(biāo)稱厚度近似外徑廢品近似分量絕緣標(biāo)稱厚度近似外徑廢品近似分量(mm2)(mm)(mm)(kg/km)(mm)(mm)(kg/km)YJVYJLVYJV22YJLV221.50.75.5866572.50.75.98786340.7

17、6.451027760.76.9612790100.78.251831190.712.3300237160.79.32531490.713.3386282250.911.763581990.915511352350.912.94662450.916.163040950114.5620312117.7801493701.116.48183861.119.61028596951.118.310985001.121.513367381201.220.0713495951.223.31601847昆山宏儒工程標(biāo)稱截面絕緣標(biāo)稱厚度近似外徑廢品近似分量絕緣標(biāo)稱厚度近似外徑廢品近似分量(mm2)(mm)(m

18、m)(kg/km)(mm)(mm)(kg/km)1501.422.0816287031.425.319099841851.624.320218481.627.5233111682401.727.16258910641.730.6295314263001.829.7321613051.834.539842072400233.2740881641238.1492024725002.237.4510920242.242602829436302.446.6749635590.6/1kv 單芯交聯(lián)聚乙烯絕緣聚氯乙烯護(hù)套電力電纜 昆山宏儒工程0.6/1kv (3+2)芯交聯(lián)聚乙烯絕緣聚氯乙烯護(hù)套電力電纜標(biāo)

19、稱截面絕緣標(biāo)稱厚度近似外徑廢品近似分量絕緣標(biāo)稱厚度近似外徑廢品近似分量(mm2)(mm)(mm)(kg/km)(mm)(mm)(kg/km)YJVYJLVYJV22YJLV223*25+2*160.92816348580.931.1202112373*35+2*160.930.1217010840.934.3298618993*50+2*25132.525081258135.5329121113*70+2*351.135.8332615791.137427225323*95+2*501.140.4458420711.144.5563231193*120+2*701.243.8560224691

20、.248.8677336403*150+2*701.447.5658628891.452.5786241653*185+2*951.652.1823135641.657.9962149543*240+2*1201.758.71049044761.764120576038昆山宏儒工程0.6/1kv (4+1)芯交聯(lián)聚乙烯絕緣聚氯乙烯護(hù)套電力電纜標(biāo)稱截面絕緣標(biāo)稱厚度近似外徑廢品近似分量絕緣標(biāo)稱厚度近似外徑廢品近似分量(mm2)(mm)(mm)(kg/km)(mm)(mm)(kg/km)YJVYJLVYJV22YJLV224*25+1*160.92715767700.930188712384*35+

21、1*160.93119488860.934227914134*50+1*2513423761108137322419564*70+1*351.138320414301.142413025754*95+1*501.142430818801.146548629424*120+1*701.246539522911.252653734344*150+1*701.450657227831.454786140814*185+1*951.655791834481.65995554843昆山宏儒工程昆山宏儒工程2.6 2.6 電線電纜載流量電線電纜載流量 所列空氣中敷設(shè)載流量表是以環(huán)境溫度30為基準(zhǔn)，埋地敷設(shè)

22、載流量表是以環(huán)境溫度25、土壤熱阻系數(shù)為1.2.m/W為基準(zhǔn)。在不同敷設(shè)條件下，電線、電纜允許的載流量尚應(yīng)乘以相應(yīng)的校正系數(shù)。為運(yùn)用方便，編入了不同環(huán)境溫度下的載流量數(shù)據(jù)。在空氣中敷設(shè)明敷的有25、30、35及40四種，耐熱塑料絕緣線及乙丙電纜有50、55、60及65四種，在土壤中直埋地敷設(shè)的有20、25及30三種。2.6.1 載流量表的闡明當(dāng)敷設(shè)處的環(huán)境溫度不同于上述數(shù)據(jù)時(shí)，載流量應(yīng)乘以校正系數(shù)Kt，其計(jì)算公式為cnanKt 式中 n電線、電纜線芯允許長(zhǎng)期任務(wù)溫度， a敷設(shè)處的環(huán)境溫度， c知載流量數(shù)據(jù)的對(duì)應(yīng)溫度，昆山宏儒工程電線、電纜線芯允許長(zhǎng)期任務(wù)溫度電線、電纜種類線芯允許 電線、電纜種

23、類線芯允許 長(zhǎng)期任務(wù)溫度()長(zhǎng)期任務(wù)溫度()橡皮絕緣電線 500V65通用橡套軟電纜500V65塑料絕緣電線 500V70橡皮絕緣電力電纜500V65粘性油浸紙絕緣電力電纜13KV80 不滴流油浸紙單芯及分相鉛包16KV806KV6510KV7010KV60絕緣電力電纜帶絕緣35KV8035KV506KV65交聯(lián)聚乙烯絕緣電力電纜110KV9010KV6535KV80裸鋁、銅母線或裸鋁、銅絞線70聚氯乙烯絕緣電力電纜16KV70乙丙橡皮絕緣電纜90昆山宏儒工程空氣中敷設(shè)不同環(huán)境溫度時(shí)載流量的校正系數(shù)K t值線芯長(zhǎng)期任務(wù)溫度()空 氣 溫 度 202530354045901.081.0410.9

24、60.910.87801.11.0510.950.890.84701.121.0610.940.870.79651.131.0710.930.850.76601.151.0810.910.820.71501.221.1210.870.710.5昆山宏儒工程直埋地敷設(shè)不同環(huán)境溫度時(shí)載流量的校正系數(shù)K t值 線芯長(zhǎng)期任務(wù)溫度()土 壤 溫 度 1520253035901.071.0410.960.92801.091.0410.950.9701.11.0510.940.88651.121.0610.930.87601.131.0710.920.85501.181.0910.890.77昆山宏儒工程穿

25、電線鋼管或塑料管在空氣中多根并列敷設(shè)時(shí)載流量的校正系數(shù)K g值 管子并列根數(shù)載流量校正系數(shù)管子并列根數(shù)載流量校正系數(shù)240.954根以上0.90電纜在托盤、梯架內(nèi)多根并列敷設(shè)時(shí)載流量的校正系數(shù)K lq值支架方式電纜中心間隔電纜層數(shù)校正系數(shù)支架方式電纜中心間隔電纜層數(shù)校正系數(shù)實(shí)際值適用值實(shí)際值適用值托盤d1230.7/0.8(0.75/0.8)0.7/0.75(0.75/0.8)0.65/0.75(0.7/0.8)0.70.550.5梯架d1230.8/0.80.75/0.80.75/0.80.80.650.552d1230.9/0.950.9/1.00.85/0.90.85/0.950.85/

26、0.90.85/0.952d1231.0/1.00.95/1.00.95/0.95昆山宏儒工程不同土壤熱阻系數(shù)直埋地電纜載流量的校正系數(shù)Ktr值及土壤情況截面(mm2)不同土壤熱阻系數(shù)t(.m/W)0.81.21.62.03.02.51625951202401.111.141.161.001.001.000.920.910.910.860.830.830.750.740.74土壤情況潮濕地域：沿海、湖、河畔地帶，雨量多的地域，如華東、華南地域等；濕度大于9%的砂土或濕度大于14%的砂-泥土普通土壤；如東北大平原夾雜質(zhì)的黑土或黃土，華北大平原黃土、黃粘土、砂土等；濕度為7%9%的砂土或濕度為12

27、%14%的砂-泥土較枯燥土壤：如高原地域，雨量較少的山區(qū)、丘陵、枯燥地帶；濕度為8%12%的砂-泥土枯燥土壤：如高原地域、雨量少的山區(qū)、丘陵、枯燥地帶濕度為4%7%的砂土或濕度為4%8%的砂-泥土多石地層、非?？菰餄穸?%的砂土昆山宏儒工程確定電纜載流量的環(huán)境溫度敷設(shè)場(chǎng)所通風(fēng)條件擇取的環(huán)境溫度直埋地埋深處最熱月平均地溫水下最熱月日最高水溫平均值有熱源設(shè)備廠房最熱月的日最高溫度月平均值另加5；當(dāng)隧道中電纜數(shù)量較多時(shí)特別是交聯(lián)電纜，還應(yīng)核算電纜發(fā)熱的影響隧道、戶內(nèi)電纜溝無機(jī)械通風(fēng)或通風(fēng)不良隧道、戶外電纜溝或戶外明敷有遮陽時(shí)有機(jī)械通風(fēng)或通風(fēng)良好最熱月日最高溫度平均值無熱源設(shè)備廠房電纜間凈距(mm)3

28、芯電纜根數(shù)123456781002003001.001.001.000.880.900.920.840.860.890.800.830.870.780.820.860.750.800.850.730.800.850.720.790.84埋地多根并列敷設(shè)時(shí)載流量的校正系數(shù)Kld值昆山宏儒工程聚氯乙烯絕緣電線明敷的載流量n=70截面(mm2)鋁芯BLV型銅芯BV、BVR型253035402530354011.52.546101625355070951201501851927344563851111752172653023454031825324259801051301652052502803253

29、80172430405575991221551932352683063571622283751709111314417821824828331120253445588011114618022828134539845651919243242557510517021526532537543049018233040527199130160202249306353404461172128374865911201481872312833263744262.6.2 塑料絕緣電線載流量：昆山宏儒工程昆山宏儒工程昆山宏儒工程2.6.3 聚氯乙烯絕緣電力電纜載流量昆山宏儒工程昆山宏儒工程2.6.4 交聯(lián)聚乙烯絕

30、緣電力電纜載流量昆山宏儒工程昆山宏儒工程2.6.5 涂漆矩形母線載流量單片母線的載流量n=70母線尺寸鋁A銅A 寬*厚 mm 交流直流交流直流2530354025303540253035402530354015*316515514513416515514513421019718517021019718517020*321520218917421520218917427525824222327525824222325*326524923321526524923321534032029927634032029927630*43653433212963703483263004754464183854

31、7544641838540*448045142238948045142238962558755050662558755050640*554050747543854551248044670065961556770566462057150*566562558553967063059054386080975669787081876570550*6.374069565160074570065560495589884077496090284577863*6.38708187657058808277757131125105699091211451079101092880*6.311501080101093

32、211701100103095014800130012001510142013301225100*6.3142513401255115514558128011801810170015901470187517601650152063*8102596590283110409779158441320124011601070134512651185109080*81320124011601070512741192110016901590149001755165015451420100*81625153014301315169015901488020801955183016852180205019201

33、770125*8190017851670154020401918179516552400225521101945260024452290210563*101155108510169361180111010409561475813001195152514321340123580*101480013001200154014505125019001786167015401990187017501610100*101820171016001475191017951680155023102170203018702470232021752000125*102070194518201680230021602

34、020186526502490233021502950277025952390昆山宏儒工程2-3片組合涂漆母線的載流量n=70、a=25母線尺寸 寬*厚 mm鋁A銅A交流直流交流直流2片3片2片3片2片3片2片3片40*4855109040*5965125050*51180152550*6.31315170063*6.30172015551940174022401990249580*6.316302100205524602110272026303220100*6.31935250025153040247031703245394063*816802180184023302160279024853

35、02080*820402620240029752620337030953850100*823903050294536203060393038104690125*82650338033504250340043404400560063*102021265021102720256033002725353080*1024103100273534403100399035104450100*1028603650335041603610465043255385125*1032004100390048604100520050006250昆山宏儒工程2.7 2.7 電壓損失計(jì)算電壓損失計(jì)算2.7.1 導(dǎo)線電阻計(jì)

36、算1導(dǎo)線直流電阻 =201+(-20) 2.7.1-2上兩式中 L線路長(zhǎng)度，m； A導(dǎo)線截面，mm2； Cj 絞入系數(shù)，單股導(dǎo)線為1，多股導(dǎo)線為1.02； 20導(dǎo)線溫度為20時(shí)的電阻率，鋁線芯包括鋁導(dǎo) 線、鋁電纜、硬鋁母線為0.0282.m或0.028*10-4，銅線芯包括銅電線、銅電纜、硬銅母線為0.0172.m即 0.0172*10-4； 導(dǎo)線溫度為時(shí)的電阻率，.m或10-4； 電阻溫度系數(shù)，鋁和銅都取0.004； 導(dǎo)線實(shí)踐任務(wù)溫度，。ALCjR2.7.1-2昆山宏儒工程 Rj=Kjf Klj R 2.7.1-32導(dǎo)線交流電阻)2(2Kjf 2.7.1-4 2.7.1-5R導(dǎo)線溫度為時(shí)的直

37、流電阻值， Kjf集膚效應(yīng)系數(shù)，電線的Kjf可用式2.7.1-4計(jì)算當(dāng)頻率為 50HZ、芯線截面不超越240mm2時(shí)，Kjf均為1，母線的Kjf 見表 Klj 臨近效應(yīng)系數(shù)，電線的Klj可從曲線求取，母線的Klj取1.03； 導(dǎo)線溫度為時(shí)的電阻率，其值見表 r線芯半徑，cm 電流透入深度，cm，因集膚效應(yīng)使電流密度沿導(dǎo)線橫截面的徑向按指數(shù)函數(shù)規(guī)律分布，工程上把電流可等效地看作僅在導(dǎo)線外表厚度中均勻分布，不同頻率時(shí)的電流透入深度值見表 相對(duì)導(dǎo)磁率，對(duì)于有色金屬導(dǎo)線為1； f頻率，HZ。上三式中cmf5030昆山宏儒工程母線的集膚效應(yīng)系數(shù)Kjf母線尺寸 寬*厚 mm 鋁 銅母線尺寸鋁 銅 寬*厚

38、mm 30*411.00563*81.031.0940*41.0051.01180*81.071.1240*51.0051.018100*81.081.1650*51.0081.028125*81.1121.2250*6.31.011.0463*101.081.1463*6.31.021.05580*101.091.1880*6.31.031.09100*101.131.23100*6.31.061.14125*101.181.25昆山宏儒工程導(dǎo)線溫度為時(shí)的電阻率值導(dǎo)線類型絕緣電線、聚氯乙烯絕緣電纜裸母線、裸絞線1KV油浸紙絕緣電力電纜線芯任務(wù)溫度606575鋁3.271*10-63.328*

39、10-63.440*10-6銅1.995*10-62.030*10-62.098*10-6不同頻率時(shí)的電流透入深度值頻率HZ鋁 cm銅 cm606575606575501.3491.3611.3831.0391.0481.0663000.5510.5550.5650.4240.4280.4354000.4770.4810.4890.3670.3710.3775000.4270.430.4370.3290.3310.33710000.3020.3040.3090.2320.2340.238昆山宏儒工程昆山宏儒工程電線、母線和電纜的感抗按下式計(jì)算X=2fL 2.7.2-12.7.2 導(dǎo)線電抗計(jì)算式

40、中 410*)5 . 0ln2(rDjL425. 010*)ln(ln2erDj25. 04ln10*2reDj rDj778. 0lg10*6 . 44DzDjlg10*6 . 44 2.7.2-2 當(dāng)f=50HZ時(shí)，式2.7.2-1可簡(jiǎn)化為 DzDjXlg1445. 0 2.7.2-3昆山宏儒工程 X線路每相單位長(zhǎng)度的感抗， /km; f頻率，HZ；L電線、母線或電纜每相單位長(zhǎng)度的電感量，H/km； Dj幾何均距，cm，對(duì)于架空線為 見圖，穿管電線及圓形線芯的電纜為 d+2,扇形線芯的電纜為h+2,見圖； r電線或圓形線芯電纜主線芯的半徑，cm d電線或圓形線芯電纜主線芯的直徑，cm； D

41、Z線芯自幾何均距或等效半徑，cm，其值見表 穿管電線或電纜主線芯的絕緣厚度，cm； h扇形線芯電纜主線芯的壓緊高度，cm。以上三式中CABCABDDD3昆山宏儒工程線芯自幾何均距Dz值線芯構(gòu)造線芯截面范圍mm2Dz線芯構(gòu)造線芯截面范圍mm2Dz實(shí)心圓導(dǎo)體絕緣電線610kv及以下三芯電纜160.389d37股TJ-185300LJ-300500絕緣電線1201850.384d3股LJ-100.339d7股TJ-1050LJ-16-70絕緣電線10350.363d10kv線芯為120壓緊扇形的三芯電纜250.439s19股TJ-70150LJ-95240絕緣電線50950.379d矩形母線0.22

42、4(b+h)昆山宏儒工程昆山宏儒工程2.7.3 電路電壓損失昆山宏儒工程昆山宏儒工程線路電壓損失的計(jì)算系數(shù)C值(cos=1)25.2102Un標(biāo)稱電壓(V)線路系統(tǒng)計(jì)算公式導(dǎo)線C值=50母線C值=65鋁銅鋁銅220/380三相四線10Un245.77543.471.1220/380兩相三線20.333.319.331.6220單相及直流5U2n 7.6612.567.2711.921101.923.141.822.98360.210.340.20.32240.0910.150.0870.14120.0230.0370.0220.03660.00570.00930.00540.0089昆山宏儒工

43、程2.7.4 電纜電路的電壓損失35KV油浸紙絕緣電力電纜的電壓損芯數(shù)*截面mm2電阻=55/km感抗/km埋地25時(shí)的允許負(fù)荷MVA明敷35時(shí)的允許負(fù)荷MVA電壓損失%/MW.km)cos電壓損失%/A.km)cos粘性不滴流粘性不滴流0.80.850.90.80.850.9鋁3*503*703*953*1203*1503*1853*2400.6560.4680.3440.2730.2190.1770.0.0.1280.1210.1160.1120.1090.1045.826.9728.4879.69910.91212.42714.5497.2758.7910.60912.12413.337

44、15.15517.8834.9586.0657.3848.4399.75711.07613.1856.5938.17510.02111.33912.92214.76717.4050.0620.0450.0340.0280.0240.020.0160.060.0450.0340.0280.02420.0160.0590.0430.0330.0270.0220.0190.0150.0030.0020.0020.0010.0010.0010.0010.0030.0020.0020.0020.0010.0010.0010.0030.0020.0020.0020.0010.0010.001銅3*503*

45、703*953*1203*1503*1853*2400.40.2860.210.1660.1340.1080.0830.0.1280.1210.1160.1120.1090.1047.5789.09310.91212.42713.94315.76218.1879.90311.21513.33715.15517.27719.70222.7336.3297.9119.49311.07612.39414.2416.6138.4391054812.65814.50416.61318.98722.1510.040.030.0230.0190.0170.0140.0120.040.030.0230.019

46、0.0170.0140.0120.0380.0280.0220.0180.0150.0130.0110.0020.0020.0010.0010.0010.0010.0010.0020.0020.0010.0010.0010.0010.0010.0020.0020.0010.0010.0010.0010.001昆山宏儒工程10KV油浸紙絕緣電力電纜的電壓損芯數(shù)*截面mm2電阻=55/km感抗/km埋地25時(shí)的允許負(fù)荷MVA明敷35時(shí)的允許負(fù)荷MVA電壓損失%/MW.km)cos電壓損失%/A.km)cos粘性不滴流粘性不滴流0.80.850.90.80.850.9鋁3*163*253*353*5

47、03*703*953*1203*1503*1853*2402.051.3110.9370.6560.4680.3440.2730.2190.1770.0.110.0980.0920.0870.0830.080.0780.0770.0750.0731.2821.5421.8192.2522.7713.1183.5514.074.6771.3511.6281.9922.4252.9443.2913.8114.335.0231.0911.3161.5762.0442.4422.8413.3083.7764.4861.2121.4721.7672.2522.7373.2223.624.1924.988

48、2.1.3851.0080.7240.5330.4060.3340.2780.2350.1922.121.3720.9960.7120.5210.3950.3230.2680.2250.1832.1051.3590.9830.70.510.3840.3120.2570.2140.1720.030.0190.0140.010.0070.0060.0050.0040.0030.0030.0310.020.0150.0110.0080.0060.0050.0040.0030.0030.0330.0210.0150.0110.0080.0060.0050.0040.0030.003銅3*163*253

49、*353*503*703*953*1203*1503*1853*2401.250.80.5710.40.2860.210.1660.1340.1080.0830.110.0980.0920.0870.0830.080.0780.0770.0750.0731.6451.9922.3382.9443.5514.074.595.1966.0621.7322.0782.5113.1183.7244.334.855.5436.4091.4031.7322.0442.5983.1523.7074.2614.8845.751.5421.8532.2522.8933.5514.1054.6775.4046.3

50、571.3350.8740.6420.4680.3510.2720.2270.1930.1660.1.320.8610.630.4560.3390.2610.2160.1830.1560.131.3050.8480.6170.4440.3280.250.2050.1720.1450.1190.020.0120.0090.0070.0050.0040.0030.0030.0020.0020.0190.0130.0090.0070.0050.0040.0030.0030.0020.0020.020.0130.010.0070.0050.0030.0030.0020.0020.002昆山宏儒工程1K

51、V聚氯乙烯電力電纜用于三相380V系統(tǒng)的電壓損失截面mm2電阻 =60/km感抗/km電壓損失%A.kmcos0.50.60.70.80.91鋁2.513.0850.13.0223.6154.2084.7995.3885.96448.1780.0931.9012.272.643.0083.3733.72865.4520.0931.2791.5251.772.0142.2552.485103.3130.0870.7890.9381.0851.2321.3761.51162.0850.0820.5080.60.6920.7830.8720.95251.3340.0750.3340.3920.450

52、.5070.5620.608350.9540.0720.2460.2870.3280.3680.4060.435500.6680.0720.1810.2090.2370.2630.2880.305700.4760.0690.0.1550.1750.1920.2090.217950.3510.0690.1070.1210.0.1470.1580.161200.2780.0690.0910.10.1110.120.1280.1271500.2230.070.0780.0870.0940.1010.1050.1021850.180.070.0690.0750.080.0850.0880.082240

53、0.0.070.0590.0640.0670.070.0710.063昆山宏儒工程截面mm2電阻 =60/km感抗/km電壓損失%A.kmcos0.50.60.70.80.91銅2.57.9810.11.8582.2192.5792.9383.2943.63844.9880.0931.1741.3981.6221.8442.0652.27463.3250.0930.7950.9431.0911.2381.3831.516102.0350.0870.4980.5880.6780.7660.8520.928161.2720.0820.3220.3780.4330.4860.5380.58250.8

54、140.0750.2150.250.2840.3170.3490.371350.5810.0720.1610.1850.2090.2320.2530.265500.4070.0720.1210.0.1530.1680.1810.186700.2910.0690.0940.1050.1150.1250.1330.133950.2140.0690.0760.0840.0910.0970.1020.0981200.1690.0690.0660.0710.0760.0810.0830.0771500.0.070.0590.0630.0660.0690.070.0621850.110.070.0530.

55、0560.0580.0590.0590.052400.0850.070.0470.0490.050.050.0490.0391KV聚氯乙烯電力電纜用于三相380V系統(tǒng)的電壓損失昆山宏儒工程10KV交聯(lián)聚乙烯絕緣電力電纜的電壓損失截面mm2電阻=80/km感抗/km埋地25時(shí)的允許負(fù)荷MVA明敷35時(shí)的允許負(fù)荷MVA電壓損失%/MW.km)cos電壓損失%/A.km)cos0.80.850.90.80.850.9鋁1625355070951201501852402.231.4261.0190.7130.510.3760.2970.2380.1920.1480.1330.120.1130.1070

56、.1010.0960.0950.0930.090.0871.8192.1652.5113.1183.7244.2444.7635.3696.2351.7492.0782.5813.1523.8284.4865.0755.9066.8942.3301.5161.1040.7930.5860.4480.3680.3080.2600.2132.3121.5001.0890.7790.5730.4360.3560.2960.2480.2022.2941.4841.0740.7650.5590.4230.3430.2830.2360.1900.0320.0210.0150.0110.0080.0060.

57、0050.0040.0040.0030.0340.0220.0160.0120.0080.0060.0050.0040.0040.0030.0360.0230.0170.0120.0090.0070.0050.0040.0040.003銅1625355070951201501852401.3590.870.6220.4350.310.2290.1810.1450.1180.0910.1330.120.1130.1070.1010.0960.0930.0900.0872.3382.7713.2913.9844.7635.3696.0626.8427.8812.1652.7373.3264.074

58、.9025.7336.5647.4828.8161.4590.9600.7070.5150.3860.3010.2520.2150.1860.1561.4410.9440.6920.5010.3730.2890.2400.2030.1740.1451.4230.9280.6770.4870.3590.2760.2270.1900.1620.1330.0200.0130.0100.0070.0050.0040.0040.0030.0030.0020.0210.0140.0100.0070.0060.0040.0040.0030.0030.0020.0220.0150.0110.0080.0060

59、.0040.0040.0030.0030.002昆山宏儒工程6KV交聯(lián)聚乙烯絕緣電力電纜的電壓損失截面mm2電阻=80/km感抗/km埋地25時(shí)的允許負(fù)荷MVA明敷35時(shí)的允許負(fù)荷MVA電壓損失%/MW.km)cos電壓損失%/A.km)cos0.80.850.90.80.850.9鋁1625355070951201501852402.231.4261.0190.7130.510.3760.2970.2380.1920.1480.1240.1110.1050.0990.0930.0890.0870.0850.0820.0801.0911.2991.5061.8712.2342.5462.8583.2223.7411.051.2471.5481.8912.2972.6923.0453.5444.6.4534.11933.0492.1871.6111.2301.0060.8380.7040.5786.4084.1523.0112.1