Calculation of transformer current carrying capacity| Hebei wastewater flowmeter manufacturer

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How to calculate the current carrying capacity of a transformer?

A 1600 transformer with a rated current of I=P/√ 3U line=1600/1.732 * 10=1600/17.32=92.38A 92.38/1.5=61.59A on the 10kV side, using 50mm ² copper cable. If aluminum cable is required, choose 90mm ².. The mnemonic for estimating the carrying capacity of extended data is as follows: believe in God 2.5, multiply by nine, subtract by one and follow the order. The phrase Multiply 2.5 by 9 and subtract one from the top in order refers to aluminum core insulated wires with various cross-sections of 2.5mm and below, with a current carrying capacity of approximately 9 times the number of cross-sections. For a 2.5mm wire, the current carrying capacity is 2.5 × 9=22.5 (A). The multiple relationship between the current carrying capacity and the number of cross-sections of wires with a diameter of 4mm and above is arranged in ascending order along the wire number, and the multiple is gradually reduced by l, that is, 4 x

8, 6 x

7, 10 x

6, 16 x

5, 25 x 4. Thirty five times three and a half, in pairs, subtract five points. The current carrying capacity of a 35mm conductor is 3.5 times the number of cross-sections, that is, 35 × 3.5=122.5 (A). From wires of 50mm and above. The multiple relationship between the current carrying capacity and the number of cross-sections becomes two sets of two wire numbers, and the multiples are sequentially reduced by 0.5. The current carrying capacity of 50 and 70mm wires is three times the number of cross-sections; 9

5. The current carrying capacity of a 120mm wire is 2.5 times its cross-sectional area, and so on. Conditions are subject to change and conversion, with high temperature copper up

Calculation of transformer current carrying capacity

graded at a 10% discount. Conditions are subject to change and conversion, with high temperature copper upgraded at a 10% discount. The above mnemonic is determined for aluminum core insulated wire and exposed to an ambient temperature of 25 ℃. If the aluminum core insulated wire is laid openly 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 discounted by 10%. When using copper core insulated wire instead of aluminum wire, its current carrying capacity is slightly larger than that of aluminum wire of the same specification. The current carrying capacity that is one wire size larger than aluminum wire can be calculated using the above formula. The current carrying capacity of 16mm copper wire can be calculated based on 25mm2 aluminum wire. The number of pipes passing through is 2-34, with a full load flow of 876. Two pipes are inserted, and the current carrying capacity is calculated at a 20% discount; Three pipes are inserted, and the current carrying capacity is calculated at a 70% discount for durability; Four pipes are inserted, and the current carrying capacity is calculated at a 60% discount. Reference source: Baidu Baike - Cable current carrying capacity reference source: Baidu Baike - High voltage cable reference source: Baidu Baike - Transformer

2.120 square meters of high-voltage buried aluminum wire cable, maximum transformer capacity

120 square meters of high-voltage buried aluminum wire cable can carry a maximum power transformer of 4000kVA. Here is the specific analysis: Current carrying capacity calculation: For a 120 square meter high-voltage buried aluminum wire

Calculation of transformer current carrying capacity

How to calculate the current carrying capacity of a transformer?

2.120 square meters of high-voltage buried aluminum wire cable, maximum transformer capacity

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