Instrument Transformer

Current Transformer: Current transformers are used for measuring,control and protection purpose. There current ratio of these transformer is high (e.g. 500A/5A) and voltage . Their location is decided by protective zone measurement requirement.

Voltage Transformer: Basically are of two types

     1. Electromagnetic Voltage Transformer.

     2. Capacitive Voltage Transformer.

The voltage ratio of these transformer is high. Used for measuring, control and protection purpose The secondary sides of these transformer are connected to protective relays

Substation Equipments

1. Power Transformers
2. Current Transformers
3. Voltage Transformers
4. Busbars 
5. Circuit breaker
6. Isolator
7. Earthing Switch
8. Shunt Capacitor
9. Shunt Reactor
10. Surge Arrestor (Lightning Arrestor)
11. Line Trap
12. Line
13. Power Cables
14. Control Cables
15. Series Capacitor
16. Metering, Control and Relay Panel
17. Insulators
18. Coupling Capacitor

Advantages of Electrical Energy over other types of energy

 Its most common form of energy used in houses and industry. And some reasons for its popularity are listed below:-

1. Its called  "Clean and Green energy" . Clean because it does't have any byproducts and green because it doesn't cause any kind of pollution neither any of the resources of mother earth are exhausted when we use this form of energy.
2. It can be easily converted to other form of energy.
3. It is much cheaper than other forms of energy.
4. It can be easily transmitted to various location very conveniently and efficiently.
5. This form of energy can be controlled and monitored easily.