电缆电流计算（Calculation of cable current）.docVIP

电缆电流计算（Calculation of cable current） The conductor ampacity calculation formulas 1. uses: the current carrying capacity of various wires (safety current) is usually from the manual Search in. But the use of formulas with some simple arithmetic, can be calculated directly, without look-up table. Wire load Flow and wire load on the surface, and wire material (aluminum or copper), type (insulated wire or wire laying, etc.). The method (such as laying or passing through tubes) and the temperature of the environment (about 25 degrees or more) are related Also more complex. 10, five, 100, two. 25, 35, four three. 70, 95, two and a half times. Tube temperature 11% off. Add half bare. Copper upgrade. 3. Description: the formula is aluminum core insulation wire, surface at ambient temperature of 25 degrees. Piece shall prevail. If the conditions are different, as otherwise stated. Insulated wires include various types of rubber insulated wires or plastic insulated wires. Formula The carrying capacity (current, safety) of various sections is not pointed out directly, but is used as cross section Multiply by a certain multiple. To do this, it should be familiar with the wire cross section (squared) Arrangement of millimeters 11.5, 2.5461016253550, 7O, 95, l20 150185...... The manufacturing plant makes the cross-sectional area of the aluminum core insulated wire, usually starting at 2.5, and the copper core The insulated wire starts at 1; the bare aluminum wire starts at 16; the bare copper wire starts at 10. This formula pointed out: aluminum core insulation wire load flow, ANN, according to how many times the number of sections to calculate. The formula The field of digital said wire section (mm2), is a multiple of Chinese characters. Arrange the section and multiple relation formula Get up as follows: ..10 16-25, 35-50, 70-95120... Five times four times three times two times two times Now more and more clearly. The control formula of the original 10 under five refers to the