What is the formula for calculating the current carrying capacity of a transformer?

『Calculation of transformer current carrying capacity』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

What is the size of the high voltage end of a 1.4000KVA transformer and what is the current of the cable? (Assuming the high voltage end is 10KV voltage) The high voltage end of a 4000KVA transformer requires a 100 square millimeter cable and a current of approximately 400A. 4000KVA， The voltage is 10KV, and the current is 4000 ÷ 10=400A. Calculated based on the wire current carrying capacity of 4A/MM, 400 ÷ 4=100 (square millimeters)/ iknow-pic.cdn.bcebos.com/d043ad4bd11373f030fd77b4ab0f4bfbfaed04de"target="_blank"title=" Click to view large image "class=" ikqc_img.link ">/i know pic.cdn.bcbbos. com/d043ad4bd1133f030fd77b4ab0f4bfbfaed04de? X-bce-process=image% 2Freesize% 2Cmlfit% 2Cw_600% 2Cw_800% 2Climat1% 2Fquality% 2Cq_85% 2Fformat% 2Cf_auto" esrc=“ https://iknow-pic.cdn.bcebos.com/d043ad4bd11373f030fd77b4ab0f4bfbfaed04de Additional information: In power engineering, the current carrying capacity of a wire is determined by three factors: wire material, wire cross-sectional area (in square millimeters, abbreviated as square), and wire laying conditions. Generally speaking, a single wire can have a higher current carrying capacity than multiple parallel wires; a wire laid in an open wire can have a higher current carrying capacity than a wire laid in a conduit; a copper wire can have a higher current carrying capacity than an aluminum wire. The value of the current carrying capacity of the wire should comply with the International Electrotechnical Association IEC-60364-5-523-1983 standard. A device that uses the principle of electromagnetic induction to change AC voltage, consisting mainly of primary coil, secondary coil, and iron core (magnetic core). The main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. According to their purposes, they can be divided into: power transformers and special transformers (electric furnace transformers, rectifier transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high-frequency transformers, impulse transformers, instrument transformers, electronic transformers, reactors, mutual inductors, etc.). Circuit symbols often use T as the beginning of numbering. The function of the iron core is to enhance the magnetic coupling between two coils. In order to reduce eddy currents and hysteresis losses within the iron, the iron core is made by laminating painted silicon steel sheets; There is no electrical connection between the two coils, which are wound with insulated copper wire (or aluminum wire). One coil connected to an AC power source is called a primary coil (or primary coil), and another coil connected to an electrical appliance is called a secondary coil (or secondary coil). The actual transformer is very complicated and inevitably suffers from copper loss (coil resistance heating), iron loss (iron core heating), and magnetic leakage (magnetic induction lines closed by air). To simplify the discussion, only the ideal transformer will be introduced here. The conditions for the establishment of an ideal transformer are: ignoring the leakage flux, ignoring the resistance of the primary and secondary coils, ignoring the loss of the iron core, and ignoring the no-load current (the current in the primary coil when the secondary coil is open). For example, when the power grid is operating at full load (rated

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