single-three phase in air conditio

[popi]

Hi there..

Can you please explain to me whats the difference between single-3 phase in aircondition systems?? whats the purpose of each one??:)

Thanks!!

[The Viking]

This could be the subject of a 100 page essay...

Look at a car, what's the difference between a straight in-line 4 cylinder engine and a V4?

It all depends on what compressor the designers decided to use.

Generally the higher capacity, the more likely you are to find a 3-phase compressor in the kit.

[nike123]

There are larger and smaller air conditioners. Their power requirement is proportional with their cooling/heating capacity. According to that demand smaller could run on one phase electrical supply and bigger need electrical supply which is capable to provide more energy. Because 3 phase system have usually higher voltage than 1 phase, and because each of phase could deliver energy, it is solution for bigger power demand. Also, where is need for more torque (like in large compressors), 3 phase motors are better then 1 phase.

[brunstar]

it is mainly dependant of what is required on site and the main factor is what supply the site has whether they have 240v or 415v at the point of attatchment.

[gramcor]

Single phase is for home , because , usually , at home we have single phase electrical network , and 3-phase is for all . Single phase electrical motor for compressors is a special constructions for 3-phase electrical motors.
Gramcor

[Refrigerologist]

Electricity generators ie the Electric Company prefer balanced loads within a building. Therefore it is preferable, where a three phase supply is available, to install three phase equipment. The alternative, when installing multiple numbers of single phase equipment, is to ensure these are spread as equally as possible across all three phases, thus balancing the load. Obviously where only a single phase supply is available you have no choice.

Beware the building where the electricians have installed all of the lighting circuits on the red phase, L1 nowadays. You could be surprised by how much a building load can be unbalanced by this practice. Electrical loads should always be evenly spread!

[Refrigerologist]

Also beware of old 2 phase equipment! Carrier used to manufacture a rooftop package 415V 2 phase!