Method for bored pile capacity calculationFull description
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Pile capacity caculation as per iRC78
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Calculation for Short Circuit Current Calculation using IEC / IEEE Standard. This report contains the description for calculating the short circuit current using IEEE 909 and circuit breaker…Full description
SPM Form 5Full description
To design a water treatment plant first and foremost thing is calculation/estimation of plant capacity in which plant has to run up to design period without trouble.
To design a water treatment plant first and foremost thing is calculation/estimation of plant capacity in which plant has to run up to design period without trouble.Description complète
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capacity calculationFull description
BUSBAR DIMENSION CALCULATION FOR 1000 A Reference documents: Copper Development Association SWITCH BOARD REFERENCE : MAIN PCC - Busbar Rating - 1000 A 50 mm Thickness = 12 mm X 1 RUN Busbar dimensions: Width = 1. Approximate DC Current Rating for Single Flat Bars (Apply Formula 4, Page 11 ) As per Copper Development Association Hand Book, approximate current rating of busbar shall be carried out by following methods.
I=7.73x A0.5x p0.39 I A p
Formula 4 Page 11
= current carrying capacity, A = Busbar cross section area, mm2. = Busbar perimeter of conductor in mm.
Hence,
Idc = 7.73x600^.5x124^0.39 For Single Rectangular Section Bar = 1,241 A 2. Approximate AC current rating for Single flat bar 50 X 12 mm (Page 11, 13 & 37 ) Iac = Idc/(Rf/Ro)0.5 Ro1000 m = ∂20 * L/A A = cross section area, cm2 L = 1000 m ∂20 = resistivity of copper at 20 °C, 1.724 µΩ cm (Page 11) Ro1000 m = (1.724*100*1000)/(5.0*1.2) = 28733.3 µΩ Hence, (f/Ro)0.5 Rf/Ro (Rf/Ro)0.5
Iac = 1240.76/1.058301 Iac = For Single Rectangular Section Bar 1172 A 3. Approximate AC current rating for 1 No flat bars of 50 x 12 mm = 1172 A CONCLUSION: FINAL CURRENT CARRYING CAPACITY OF THE ABOVE BUSBAR IS SUFFICIENT TO CARRY THE REQUIRED BUSBAR RATING OF 1000 A.
