How many square aluminum cables are used for 3000KVA transformers

The voltage ratio may be 10kV

High-side current i=3000 (

Low-side current i=3000 (

The cross-section of the aluminum cable on the high-voltage side is optional 3*150mm2(120mm2 is also OK) low-voltage busbar. Each phase selects 2 parallel 12*100mm copper bars.

A transformer is a device that uses the principle of electromagnetic induction to change the alternating voltage, and the main components are the primary coil, the secondary coil and the core (magnetic core). In electrical equipment and wireless circuits, it is often used to increase voltage and match impedance.

security isolation, etc. The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulation (magnetic saturation transformer), etc. According to the use, it can be divided into: distribution transformer, power transformer.

Fully sealed transformers, combined transformers, dry-type transformers, oil-immersed transformers.

Single-phase transformers, electric furnace transformers, rectifier transformers, etc.

What you are talking about is the selection of the cable on the high-voltage input side, or the low-voltage side, and it depends on the voltage level. If it is a full load of 10kv on the high-voltage side, 95 is enough, and if it is not under the load, 70 is also fine. The low-voltage side can not be connected with a cable, but with a copper bar.

First of all, your question, the content of the information is not detailed enough, what is the transformer voltage ratio? How far is the consumer from the transformer?

The output current of a 3000kva transformer is about 3000, how many aluminum core cables are used for a large current? Imagine for yourself. How big transformer, with aluminum core wire should not be cost-effective, now is the era of energy saving and emission reduction, long-term consideration of electricity, it is recommended to use copper core cable, high-voltage wire selection, search (wire cross-section economic choice) article reference learning.

Please give the voltage level of the high and low voltage side.

Hello, glad to answer for you, 400 kW with aluminum cable 400 kW, if it is three-phase 380 volts. 400KW according to 800A current, 3 * 240 + 1 * 120mm square copper core wire safety current carrying capacity of about 400 A, if the line is not more than 100 meters, the load is not heavy, choose 2 3 * 240 + 1 * 120 square aluminum core cable in parallel: if the distance is long, the load is heavy, it is best to choose 2 3 * 300 + 1 * 150 square aluminum core cables in parallel.

Three-phase 20kw current is about 40A or more. Look at how long the line is, and choose the cable according to this table.

It is recommended to have 10 square national standard aluminum wires.

Summary. How many square aluminum cables are used for 400 kilowatts.

Hello dear, 400 kilowatts, current of about 800A, did not say the transmission distance, then within 150, it is recommended to choose aluminum core XLPE insulated cable: 3X (YJLV 1X500) + 1X (YJLV 1X240) (recommended) or take two aluminum core cables in parallel: 2X (YJLV 3X240 + 1X120) aluminum core (3 + 1 structure) XLPE insulated PVC sheathed power cable.

If the distance is more than 200 meters, it is recommended to enlarge the above cable by one gear.

How many square aluminum cables are used for 400 kilowatts.

How many square aluminum cables are used for 400 kilowatts, 400 kilowatts, the current is about 800A, there is no mention of the transmission distance, then within 150, it is recommended to choose an aluminum core XLPE insulated cable: 3X (YJLV 1X500) + 1X (YJLV 1X240) (recommended) or take two aluminum core cables in parallel: 2X (YJLV 3X240 + 1X120) aluminum core (3 + 1 structure) XLPE insulated PVC sheathed power cable.

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Summary. 300 kW with a large aluminum core cable to the transformer.

Hello dear, if it is 380v50hz network power, 300kva with square millimeter cable.

300kva=300kw=300000w

The current density of copper wire is calculated as 5a mm.

According to the three-phase four-wire power calculation formula: p = 3uicosa (cosa is the power factor, the general value.

i=300000÷（

cable cross-sectional area s = square millimeters).

300 kW with a large aluminum core cable to the transformer.

300 kW with Duochang closed section large aluminum core cable to transformer Hello dear, if it is 380V50Hz network power, 300kva with square millimeter cable. 300kva=300kw=300000wCopper wire current density is calculated according to 5A mm, according to the three-phase four-wire power calculation formula: P= Nayu3UICOSA (COSA is the power factor, the general value cable cross-sectional area is s=square millimeters), I hope it can help you.

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To determine the cross-sectional area of the high-voltage aluminum cable required for a 4000kva, 35kV transformer, the following factors need to be understood:1The rated voltage and current of the transformer.

For a 35kV transformer, the rated voltage is 35kV, and the rated current can be obtained by dividing the transformer capacity by (3 35kV), i.e.: rated current = 4000 3 35) A2The rated voltage and current load capacity of the high-voltage cable.

According to the national standard (GB T 12706), the rated voltage of 35kV aluminum core XLPE insulated cable is 35kV, and its cross-sectional area should not be small from 150 mm. At the same time, the ultimate short-circuit current load capacity of the 35kV cable should be greater than the compass transformer current load capacity, generally speaking, it should be at least greater than the times, that is: the ultimate short-circuit current load capacity > rated current Therefore, when selecting high-voltage cables, high-voltage aluminum cables with a cross-sectional area of not less than 150 mm and meet the requirements of the ultimate short-circuit current load capacity should be selected.

It should be noted that aluminum cables have poor conductivity and will have greater resistance than copper cables with the same cross-sectional area. Therefore, special attention should be paid to the problem of cable loss when transmitting power over long distances. At the same time, in the use and construction process of aluminum cable, it is also necessary to pay attention to avoid mechanical damage, corrosion, joint quality and other factors to ensure the safe and reliable operation of the cable.

Summary. Good morning, dear, glad to answer for you! According to the specifications of the 35 square aluminum cable, I recommend that you use a 150 kVA transformer.

This transformer is a larger version that meets the requirements of today's power grids, with strong shock resistance, lower risk of combustion, less noise and higher reliability.

Dear, good morning, it's a pleasure to answer for you! According to the specifications of the 35 square aluminum cable, I recommend that you use a 150 kVA transformer. This transformer is a larger model that meets the requirements of today's power grids, with strong resistance to impact penetration, low risk of combustion, less noise and improved reliability.

The 150 kVA transformer has three-phase input power, output voltage of 380 volts, power bandwidth of 0-1000kva, excellent regulation performance and low-voltage adjustment table, low-noise box, in line with IEEE power system electrical balance analysis standards, providing a safe and reliable power supply, dismantling and delayed power. With a maximum output current of 650A, the transformer has an efficient operating load and can achieve the longest operating life at high temperatures.

In addition, the transformer also has a wide range of applications, which can meet the application requirements of different types of coarse orange transportation, and the rock beam can take effective measures to ensure good efficiency for the length or load condition of 35 square aluminum cables.