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How does copper discharge the choice of cut area to decide?
From;  Author:Stand originally
Simple and easy the current-carrying capacity that the rectangular mother that remembers any norms discharges:
Rectangular generatrix current-carrying capacity:
The copper when 40 ℃ discharges current-carrying capacity = to discharge coefficient of wide * ply
The platoon is wide (Mm); ply coefficient is: It is when?2 is thick without exception 18.5; is when 20.5;10 is thick ordinal for:
[12-20.5, 10-18.5, 8-16.5, 6-14.5, 5-13.5, 4-12.5]
[Note] : According to the proposal of Lyq13703983100 and farther business accounting, coefficient of will former ply 20, 18, 16, 14, 12 add respectively 0.5, more adjacent.
Double deck copper is discharged [40 ℃ ] =1.56-1.58 monolayer copper is discharged [40 ℃ ] (decide according to sectional size)
3 copper are discharged [40 ℃ ] =2 monolayer copper is discharged [40 ℃ ]
4 copper are discharged [40 ℃ ] = monolayer copper is discharged [40 ℃ ] *2.45(does not recommend this kind of choice, had better replace with abnormity mother platoon)
Copper is discharged [40 ℃ ] = copper is discharged [25 ℃ ] *0.85
Aluminous platoon [40 ℃ ] = copper is discharged [40 ℃ ] / 1.3
Beg TMY100*10 current-carrying capacity to be for example:
Monolayer: 100*18.5 = 1850 (A) 〔 checks manual to be 1860A 〕 ;
Double deck: 2 (TMY100*10) current-carrying capacity is:
1850*1.58 = 2923 (A) ; 〔 checks manual to be 2942A 〕 ;
Three-layer: 3 (TMY100*10) current-carrying capacity is:
1850*2 = 3700 (A) 〔 checks manual to be 3780A 〕
All computation all go to above accurately to be close to quite with manual data