1、 60287-3-22011 . 3-2, . IEC 60287-3-2:1995Electric cables Calculation of the current rating Part 3: Sections on operatingconditions Section 2: Economic optimization of power cable size(IDT) 27 2002 . 184- , 1.02004 . 1 , - 4, -, - ( )2 46 3 7 2011 . 254-4 60287-3-2:1995 . . 3. , -. 2. (IEC 60287-3-2
2、:1995Electric cables Calculation of the current rating Part 3: Sections on operating conditions Section 2:Economic optimization of power cable size). 1:1996 , , , - , - . - , - 5 , - . - () . , , 2012 , - - II 60287-3-220111 12 13 24 35 55.1 : .55.2 : 5 () .7 () 16 () 19III 60287-3-22011 60287 - . ,
3、 :- 1: (100 %- ) ;- 2: ;- 3: , . 60287-3-2 61059.0.1 - , . . , (, 90 C ) , - . - , . , - - , . - . - , , . , , , . -, , 50 % (. .6 ). - . , , , , , - , - (. .3 ). :) , , -. , - , , , .b) , - , , , , - .0.2 , , , . . . - , - . , , . , , .IV 60287-3-22011 - , - , 25 . -, . . . ; , - , ., , , - , - . .
4、 , .-,- , , .,- . , , .0.3 , , -, , . , , -,- :) ;b) 60287-1,60287-260853,- ), , ;) , ;d) , ;e) , . - . c92 , , / , . - . - , . , -.V 60287-3-22011 . 3-2, . Electric cables. Calculation of the current rating. Part 3-2. Sections on operating conditions. Economic optimization of powercable size 201207
5、011 - - .( , . 1).1 , , , (. 60287-1-1): U0, :- . 38;- . 63,5. :- 18;- . 63,5;- . 6;- ( ) .127;- () 127;- () . 63,5.2 , , . , , - - . .2 -: 60228:1978* (IEC 60228:1978 Conductors ofinsulated cables)* . 60228:2004.1 60287-3-22011 60287-1-1:1994* - 1: (100 %- -) 1: (IEC 60287-1-1:1994 Electric cables
6、Calculation ofthe current rating Part 1: Current rating equations (100 % load factor) and calculation losses Section 1:General) 60287-2-1:1994 . . 2. . 1. (IEC 60287-2-1:1994 Electriccables Calculation of the current rating Part 2: Thermal resistance Section 1: Calculation of thermalresistance) 60853 ( ) (IEC 60853 (all parts) Calculation of the cyclic and emergency current rating of cables) . - ( ).3 : , ,.*/ c215 2; , (16); , ,./; , .;D , ./ c215 ;F , (10), ./;Imax , . . , ;I(t) , ;l , ;J
