What cable section is needed for 75 kW?
It is necessary to calculate the cross-section of the cable. Length 1000 meters, power 75 kW. Which automatic machine to put on the input and cable cross-section which to choose?
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It is necessary to calculate the cross-section of the cable. Length 1000 meters, power 75 kW. Which automatic machine to put on the input and cable cross-section which to choose?
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The rated current of the motor is about 190 A. More accurately, it is possible to calculate, taking into account the power factor and efficiency indicated on the motor passport, I took the average values. When choosing a cable, the starting currents of the motor must also be taken into account. It is not known in what mode the electric motor works - you need to know exactly what inrush currents and whether there will be a strong voltage drop when the motor starts.
For this engine would be enough 120 square meters. mm, but with such a length there will be a large voltage drop, here you need to take 500 square meters. mm and even with such a cross-section, it is impossible to guarantee the normal operation of the engine, especially if it is difficult to start, there will be a large voltage drop.
I think that it is more advisable to draw a high voltage line at such a distance and in the immediate vicinity of the load put the transformer substation with a step-down transformer 10 / 0.4 kV or 6 / 0.4 kV, depending on what class of voltage of the high-voltage lines in your area.
This is a serious question - here you need to contact specialists in any case. And this is not just connecting a small load - here you need to contact the supplying organization and clarify the possibility of connecting such a load. Typically, existing networks with installed transformer substations or transformer substations are not designed to connect such a load, then a new transformer is needed and another question immediately - is the existing high-voltage line designed to connect a new load?
A 75 kilowatt engine is not installed just like that. To connect such an engine there must be a project. Well, if a freebie. it’s very simple PUE 6 edition will tell you everything. And the easiest way is 1mm2 to 9 amperes of the load current, no mistake.