How an Electrical Transformer Works

October 11, 2022

and why your business needs a great one

Electrical transformers are devices that transfer electrical energy from one circuit to another through inductively coupled conductors-the primary winding and the secondary winding. A business needs an electrical transformer because it stabilizes current, steps up or steps down voltage, and provides isolation between two circuits.

How does an electrical transformer work?

An electrical transformer uses Faraday's law of induction to work. This law states that when a conductor is moved through a magnetic field, a current is induced in the conductor. The primary winding is the conductor that is supplied with alternating current (AC). This alternating current creates a magnetic flux in the core, which induces a voltage in the secondary winding. The secondary winding is wrapped around the primary winding, and the two windings are not electrically connected. The number of turns in the secondary winding divided by the number of turns in the primary winding equals the transformation ratio. For example, if there are 100 turns in the secondary winding and 50 turns in the primary winding, the transformation ratio would be 2. The current in the secondary winding will be equal to the transformation ratio times the current in the primary winding.  

Transformers can be classified according to their use:    

Distribution Transformers - these step down very high voltages at transmission voltages to lower voltages used by businesses        
Potential Transformers - these are used with meters and breakers        
Step-up Transformers - these increase voltage from generation levels to transmission levels        
Step-down Transformers - these decrease voltage from transmission levels for use by businesses

Why does your business need an electrical transformer?

As stated before, an electrical transformer provides isolation between two circuits. This means that if there is a problem with one circuit, it will not affect the other circuit. In addition, an electrical transformer can stabilize current and either step up or step-down voltage. If your business has ever experienced power surges or brownouts, then you know how important it is to have a stable current. An electrical transformer steps up voltage when it increases the number of turns in its secondary coil while keeping the number of turns constant in its primary coil. It steps down the voltage when it decreases the number of turns in its secondary coil while keeping the number of turns constant in its primary coil.      

All businesses need some level of voltage transformation whether it is stepping up or stepping down because most buildings are not wired to handle extremely high voltages found at transmission levels. Your business needs an electrical transformer to function properly on a day-to-day basis.  

Conclusion

All businesses need some level of voltage transformation whether it is stepping up or stepping down because most buildings are not wired to handle transmission-level voltages. While different businesses have different electricity needs, all businesses can benefit from using a well-maintained and updated electrical transformer.    

If you think your business might need an electrical transformer or if you have questions about how they work, please contact us today for a consultation.

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