Electrical Transformer is the most utilized electrical machine in the control framework. Both in the power transmission and dissemination of air conditioning system, the transformer has its obligatory utilize.

1. Essentials of electrical transformer
2. What is an electrical transformer

A transformer is an electrical machine that exchanges unaltered electrical vitality and recurrence with an adjustment of voltage and current between two circuits or in excess of two circuits. So transformer –

• Does not alter the power amongst essential and auxiliary.
• Does not change the recurrence of AC current or voltage

. • Only change the voltage and current.

1. Utilization of electrical transformer

To change the voltage and current level: Modern air conditioning transmission innovation requires the voltage to be higher, for example, 11KV, 33KV, 133Kv, 232KV. This is required to limit the transmission misfortune and influencing the transmission to line lighter, more slender consequently less copper is required. Then again customer end voltage level is 400, 200, 120 and so forth. The transformer is utilized to advance up or venture down the voltage level. Additionally, the potential transformer is utilized in some assurance and estimations purposes. To change the present level-Changing current level is required in some insurance and estimation instruments named is a present transformer.

2. To give galvanic disconnection:

Some transformer is utilized to segregate two circuits (no physical association) however keep up the vitality exchange by electromagnetic acceptance. Thusly both circuit can be protected from each other additionally unique potential can be kept up.

3. To give impedance coordinating:

Power is unaltered in transformer essential and optional, just voltage and current is changed. These can be utilized to change over the impedance of a heap to an alternate level. R=V/I, now say V=200, I=10 then R=20ohm; and for V=100, I=20 then R=5ohm. In the two cases, the power is same 2000Watt yet impedance has differed. According to the Maximum Power Transfer Theorem most extreme power is exchanged when the impedance is coordinating. In this way impedance coordinating for the most part utilized in a sound framework where the impedance of speaker and telephone are of the bungle.