# 1 phase and 3 phase electrical system

1 phase and 3 phase electrical system. maybe my friend asked what is the electrical system 1 phase and 3 phase? What are the advantages of 1 phase and 3 phase electrical system?

or maybe you pay attention to the cable on the power pole and buddy think why use 3 pieces of cable like picture?

The following article will discuss about electrical systems of delta relation and electrical relationships of the stars every bit well as circuit images

## understanding of electrical system 1 phase and 3 phase

3 phase electric system (phase) is an electrical system where in the process of energy delivery using 3 pieces of cable

This is different from the 1 phase electricity that often my friend uses in the home

The 3 phase system is more economical in electric power delivery, compared to a 1 phase system because of the same conductive size 3-phase electric system can conduct larger electrical power

3 phase electric is AC power (alternating current) which is sourced from 3 phase generator which use 3 same voltage conductor but differ in phase angle equal to 120 ° so that each current coming out of generator is different phase of 120 °

read also the understanding of AC and DC currents

In 3 phase electrical installation is experienced by 2 kinds of relationship that is a relation of delta (Δ) and star relation (Y)

The 3 phase system in Indonesia is also known as RST where RST is the name of the cable connector

The delta system uses 3 pieces of line while the star relationship uses 4 pieces of cable where the cable to 4 is a neutral cable (N) Which is the confluence of the three ends of the cable?

## 1 phase and 3 phase electrical system

3 phase power schemes for delta and star relationships are somewhat different

### electric delta connection

The electrical scheme of the delta relation is usually used for high-voltage electricity of about 20KV or 20000V

Delta relationships use 3 pieces of line where the ends of the wires are connected to each other with a 120 ° angle difference. See picture at top

as for the schematic of the delta relation is as follows

### electric star connection

In the electrical relation of the star the potential divergence between the ends of R, S, and T is 380V whereas the potential difference of the three ends of both R, S, T with neutral (N) cable is 220V

The relationship between the points R, S, T with the point N called 1 phase, this electricity is then circulated to homes with voltage 220VAC

In the electrical image of the star relationship above the possible difference between R-S, S-T, and T-R = 380V. electricity is called 3 phase

While the likely difference between R-N, S-N, and T-N is 220V. Electricity is called 1 phase and distributed in homes