引线允许电流参考表

引线允许电流参考表表D.1套管内铜导杆电流A铜导杆螺距300及以下M12

475M16

600M20

900M24

1200M30

1400M33M21400φ26/36铜管M22000φ30/40铜管M23000M48M2

表D.2圆铜引线裸导线直径mm2.443.054.85.56.581012有效截面mm24.687.318.123.833.250.378.5113.1允许电流A22.53587115160241377522用纸管作外绝缘纸板管内径mm

6688101214管壁每边厚2mm允许电流A

35871041672172953804mm

3587104149194261333每边包纸厚2mm允许电流A

3587104

纸管中套纸包圆线每边纸厚2mm纸管尺寸mm

φ10/14φ12/16

允许电流A

3587

表D.3引线片电流A引线片紫铜线电流密度A/mm2厚mm宽bmm片φdmm长Lmm≤72.20.4302141703.01108.30.4303141703.01144.30.4304142003.011950.4305142003.252600.4306142003.623460.4357182003.534620.4359182003.676060.44010222503.798080.45011252753.6710830.46012273003.7814430.46016353003.76

注：(1)大于1500A用两叠铜皮见图(a)；(2)小于1500A用一叠铜皮见图(b)；(3)大于φ4.1纸包圆线，用接线板见图(c)；(4)小于φ3.05纸包圆线，将引线打圈见图(d)。表D.4引线用铜(铝)棒裸线直径mm截面mm2允许电流A每边绝缘厚度mm不包绝缘3681020铜铝铜铝铜铝铜铝铜铝铜铝2.444.6822.51222.512

3.057.3135183518

4.113.263326332

628.313668136681366813368

850.3241121229121202121191121182121

1078.538618830918827118825518824318820916212113.151227239727234526732325030723826220314153.964536949136943934039630737629131824616201.174148355946047839344736732234735529220314.1107075576562965053560249556946847238824452.41295105594076679564873559969056257046530706.9181014751295105510908881045852933760765624注：绝缘支架遮盖引线表面在10%以上时电流减小5%～15%。表D.5纸包多股铜线铜导线直径mm有效截面mm2每边包纸厚mm368101520253050允许电流A5.816777777

7.725120111104

10.250198171160152139130

12.670254221203193174163

14.395311265251233210196186

16120362309287271244227216

18.1150427363336315284262249

20185495416385363324301284275

23240598502464434388356336320

26.230070658954350944241639037232729.8400865714658614546498468445389表

D.6裸铜排铜排尺寸(厚×宽)mm截面mm2铜排附加损耗%在箱内装置方向垂直水平允许电流A3×30

4254253×40

5665664×40

1.67667665×40199.129569564×60249.1

115011505×60299.13.6143513906×60359.14.5172015307×60

201016608×60

230017907×80559.1