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Good Question. 3 phase is used to transfer power with the least amount of current. If more than 3 phases were used, the equipment needed at different stages would become overwhelming. For ex. just think about several transmission or substations each with 2 or 3 sets of 3-phase. There would be too many capacitors, insulators, windings, Transformers, high-voltage power line seperators on the poles, etc.
What else can I help you with?
What is the armour cable size for 45kw 3phase ac motor 2965rpm?
At 2965 rpm it sounds like an induction motor for a 50 Hz supply. A 45 kW motor would draw about 55 kW from the supply with a power factor of 0.85, so that is 65 kVA, and on a 415 v 3-phase supply that is a current of 90 amps. For armoured XLPE cale the size needed is at least 16 mm2 Probably 25 mm2 would be preferred for a permanent installation but it would depend on how the cable is installed, how much free air movement there is around it etc.
Why does house water supply tank not fill?
The supply line is blocked, tank is too high, etc
Explain the law of supply in your own words?
Law of supply: If demand is held constant, an increase in supply leads to a decreased price, while a decrease in supply leads etc
What is the main function of a heart?
to supply musles etc with blood
How does a frequency inverter work?
A frequency converter converts alternating current of one frequency to alternating current of another frequency. Generally it's used for controlling the ac motor speed by changing the supply frequency.
How can a family of three be rich?
The family doesn't have as many people to supply for. Jobs such as being a doctor, biologist, etc... supply a lot of money. Your family members supply you money or help.
What would I find at EMT supply stores?
EMT supply stores will carry emergency kits, gloves , stethoscopes, bandages, etc. They may also carry related products like clothing, flash lights, etc.
What does the law of supply state?
The law of supply states that all other factors being equal, as the price of a good or service increases, the quantity of etc
Why does mining exist?
To supply people and industries with minerals, metal ores and coal, etc.
What was used in the preelectronic period for power supply?
Steam engines, water wheels, etc.
Why is agriculture important in the context of food supply?
Because with farms, orchards etc there will be no food!
Types of AC-DC power supply?
Answer for countries in Europe and other world areas running a 50 Hz supply service.AC power supply is 230 v supply used in our homes for switching on fans, bulbs etc. where as DC power supply is used for switching on our laptops, charging our mobiles phones, i pods etc.
