Can 150 square copper cable use 70 kilowatts for 3000 meters

The 150 square copper cable has a maximum capacity of 207 kilowatts.

According to the formula, the safe current carrying capacity of a 150 square copper cable is equivalent to the safe current carrying capacity of a 185 square aluminum cable. The safe ampacity of a 185 square aluminum cable is 2 times that of its cross-section, i.e. 185x2 = 370a. Therefore, the safe ampacities of 150 square copper cables are 370A.

Its corresponding power is:

p = calculated with three-phase mains, and the power factor is taken.

The safe ampacities of aluminum cables are:

Multiply by nine at 2.5 and subtract one by one straight up.

Thirty-five times 3.5, double in a group minus five.

The conditions have been changed and converted, and the high-temperature nine-fold copper has been upgraded.

The number of pipe roots is two, three, four, eight, seven and six folds full of load current.

The first sentence of the formula means: the current carrying capacity of aluminum core insulated wires of various cross-sections of square and below is 9 times the number of cross-sections. If a square wire is squared, the current carrying capacity is .

The relationship between the current carrying capacity and the number of cross-sections of the conductor of 4 square and above is to go up along the wire number, and the multiple is subtracted by 1 one by one, that is, 4.

The second sentence of the formula means: the current carrying capacity of a wire of 35 square is a multiple of the number of cross-sections, that is, 35. From 50 square and above wire, the multiple relationship between its current carrying capacity and the number of cross-sections becomes two two wire numbers into a group, and the multiples are subtracted by 0 5 in turn, that is, the current carrying capacity of the square wire is 3 times the number of cross-sections, the current carrying capacity of the square wire is the multiple of its cross-sectional area, and so on.

The third sentence of the formula means: the conditions applicable to the formula are "aluminum core insulated wire, single open dressing, ambient temperature 25". If the aluminum core insulated wire is laid in an area where the ambient temperature is higher than 25 for a long time, the current carrying capacity of the wire can be calculated according to the above formula, and then it can be discounted.

When using not aluminum wire but copper core insulated wire, its current carrying capacity is slightly larger than that of aluminum wire of the same specification, and the current carrying capacity of one wire number can be calculated according to the above formula method. For example, the current carrying capacity of 16 square copper wire can be calculated according to the current carrying capacity of 25 square aluminum wire.

The fourth sentence of the formula means: in the case of laying two, three, or four wires through the pipe, the current carrying capacity is calculated as % of the current carrying capacity (single laying) in the formula.

Looking up the meter, it can be seen that through 371 currents, on a three-phase power supply of 380 volts, 185 kilowatts of left impulse difference right load can be driven. If the length of the transmission line is 1,000 meters, it can only drive a load of about 60 kilowatts of dust.

Summary. 150 square copper cable maximum energy band. According to the safe ampacity, the current carrying capacity of a 150 square millimeter copper core cable is 245A.

150 square copper cable is the most answerable cherry Zhao Dasong sedan can belt. According to the safe ampacity, the current carrying capacity of 150 square millimeters of copper core cable is 245A.

The formula is p=. Amount.

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How many kilowatts can a 70 square 380 copper cable carry is also a copper wire of 380v70 square, if the distance is not long, electrical appliances can use 120 kilowatts, and 70 square aluminum wires can use 90 kilowatts by the formula of three-phase motors: p = so power p = kilowatts, cos is. The voltage is 380V, check the cable manual YJV, and the current of the 70 square copper core cable is 225A.

The current carrying capacity is 225A, which is within the normal range of power kilowatts.

Answer: how many kilowatts can a 150 square copper cable bring, according to the resistivity of the load power for a specific analysis, if it is an inductive resistance, such as a motor, etc., its power supply is 380V, according to the power formula: P = Hu dry 3 * U * i * COS, where P is the power, 3 is the three-phase electric rate, U is the voltage, i is the current, COS is the power factor (generally taken.

Find a practical hardware manual, the safe load current per square of copper core wire is 6A, P= 3*U*I*Cos = Watt 474 kilowatts. If it is a resistive load and its power supply is 220V, then according to the power formula: P=UI, where P is the power, U is the voltage, and I is the current, and the COS power factor is 1, so it is omitted and not listed.

p = ui = 220 (150 6) = 198000 watts = 198 kilowatts.

Supplementary note: The rated current of the cable is also related to the line frame (laying) mode, but the rated current change caused by the different line frame (laying) methods, the relative cable material, wire diameter to the rated current change, the proportion is very small, often negligible.

Expansion: The influence of line distance on voltage (line voltage drop) is 500 meters, and the line distance should be kept within 500 meters.