电缆导体截面积与载流量的计算及截面的优化选择（Calculation of sectional area and Ampacity of cable conductor and optimum selection of cross section）.docVIP

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电缆导体截面积与载流量的计算及截面的优化选择（Calculation of sectional area and Ampacity of cable conductor and optimum selection of cross section）.doc

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电缆导体截面积与载流量的计算及截面的优化选择（Calculation of sectional area and Ampacity of cable conductor and optimum selection of cross section）

电缆导体截面积与载流量的计算及截面的优化选择（Calculation of sectional area and Ampacity of cable conductor and optimum selection of cross section） .txt - - one for optimization calculation and cross section cable conductor cross-sectional area and load flow, will heat two people, will have a passion three of us are walking together, there will be. It is not cherish. Real girls arent perfect, perfect girls arent real. Take it easy, lose it, go with the flow and fight for it. Calculation of sectional area and Ampacity of conductor optimum selection of distribution cable cross section Calculation of cross sectional area and Ampacity of conductors In general, a copper wire carrying capacity of wire safe carrying capacity is based on the allowed core temperature, cooling conditions and installation conditions to determine the. The general safety of copper wire flow 5~8A/mm2, aluminum wire, safe carrying capacity is 3~5A/mm2. key general copper wire safety 5~8A/mm2, aluminum wire, safe carrying capacity is 3~5A/mm2. Such as: 2.5 mm2 BVV copper wire safe carrying capacity of the recommended value of 2.5 * 8A/mm2=20A 4 mm2 BVV copper wire safe carrying capacity of the recommended value of 4 * 8A/mm2=32A Two, the recommended safe carrying capacity calculation of copper wire cross-sectional area using copper wire to calculate the value of 5~8A/mm2, the selected copper wire cross-sectional area of S on the range: S= / I (5~8) =0.125 I ~0.2 I (mm2) S----- copper wire cross-sectional area (mm2) I----- load current (A) Three, the power load calculation (can also be used as lighting appliances, refrigerators, etc.) are divided into two types, one type is a resistive load, inductive load. The formulas for calculating the resistive load calculation formula: P=UI for fluorescent lamp load: P=UIcos, the fluorescent lamp load power factor cos =0.5. Different inductive load power factor is different, household appliances can be unified computing power factor cos phi 0.8. It is said that if a family all th