3 phase generator: a brief review of everything you need to know

3 phase generators

Generators are indeed inseparable parts of the industry which has a key role in providing electricity. Considering the fact that there are a few different types of generators, finding the appropriate one to tailor your need is an important decision to make. Linquip has provided all the essential information you need to know about 3 phase generators, read on and enjoy.

What is a 3 phase generator?

This type of generator is a powerful energy source with many features and a wide range of applications.

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How does a 3 phase generator work?

It is simply three single phase generators which produce three waves of AC voltage in a cycle but with an offset of 120 between them making sure that the voltage is constant. This type of generator is used in high and constant power requirements.

3 phase generator connection types

This generator can be connected in two different ways. The generator coils can be connected in a Delta connection or a star (Y) connection. A Delta (Δ) connection is formed by connecting the end of each coil to the start of another. Three coils linked in this way form the Greek letter Delta. The delta connection consists of three phase wires and no neutral. However, in a star connection one end of each coil joins together leaving the other ends for connecting externally which form the English letter Y. This connection is used for long distance transmission because it has neutral for the fault current.  It must be noted that the star connection is most commonly used for stator coils.

3 phase generators

Three phase generators features

  • In a 3 phase generator the total power never drops to zero and suffers fewer vibrations.
  • These generators have a typical output voltage of 480 volts.
  • They are smaller, lighter and lower in price compared to single phase types for generating the same amount of power.
  • They are more efficient in supply since they are the type of system which is most used for the supply of energy worldwide.
  • Windings in 3 phase generators are more efficient.
  • They perform well with the least maintenance issues.

Three phase generators applications

  • Due to high constant power, three phase generators are ideal for running industrial units. Places like hospitals, banks, grocery stores, data centers and shopping malls have three phase-generators installed.
  • These generators are mostly used where high and constant power is required.
  • They are highly useful in establishments with three shifts where heavy duty equipment is run.
  • Three phase power generators are perfect choices for outdoor use especially in agricultural industry.
  • These generators are highly efficient for equipment that is designed to run on a three phase system.
  • They are used to power heavy appliances, this is why almost all the industrial and commercial generators are three phase systems.
  • In case of an electrical outage, a three phase generator is needed to power the entire home.

3 phase generators

3 phase generators vs. single phase generators

The decision of choosing a single-phase vs. three-phase generator mainly depends on the fact that what the generator is used to power.

Single phase generators provide an efficient power source for smaller businesses, rural or residential areas and equipment which do not require constant voltage power at a lower cost, while three phase generators are more appropriate for commercial and industrial businesses to power heavy appliances which require constant, high-voltage power. Although the three phase generator price is a bit higher than a single phase one and it is more reliable.

Pros and Cons of single phase generators and three phase generators

  • In single phase generators the power flows through one conductor, while in three phase generators the power flows through three conductors.
  • Single phase generators have an output voltage of up to 240 volts however in three phase types the amount of output voltage is up to 415 volts.
  • Singe phase generators require two wires (one phase and one neutral), while there are three phase wires and one neutral wire in three phase ones to complete the circuit.
  • Single phase generators operate in only one phase wire which means in case of a network failure, the power supply will completely drop, however, if any fault occurs on any one of the phases in three phase types, the others will still supply the power.
  • Single phase generators are ideal for house appliances or devices that require small loads while three phase generators are perfect for large loads applications such as industrial use.

So this is all you need to know about three phase generators and their applications. if you enjoyed your time in linquip and want to share your experience with others, feel free to leave it in the comment section. We will be more than glad to have your viewpoint on the article. Please let us know if you have any technical question or need an expert to help you out by signing up on our website.

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