Star and Delta Connection

⏯️Star and Delta Connection of Three Phases Motor

▶️What is Star & delta connection?

A Star Connection is a 4 – wire connection (4th wire is optional in some cases) A Delta Connection is a 3 – wire connection. Two types of Star Connection systems are possible: 4 – wire 3 – phase system and 3 – wire 3 phase system. In Delta Connection, only 3 – wire 3 phase system is possible.

▶️ Which is better Star or delta connection?

Star connection is preferred for long distance transmission and distribution as it requires low insulation and has a Neutral which helps to balance the circuit. Delta connection is preferred for shorter distance transmission and distribution as it requires more insulation and has the problems of unbalanced currents.

Protection Relay

⏯️Protection Relay and Using

▶️ What is protection Relay?

Protective relays are one of the critical components of the electrical power grid that serve to detect defective equipment or other dangerous or intolerable conditions and can either initiate or permit switching or simply provide an alarm to provide a safer, more reliable delivery system.

▶️Where is protection relay used?

Applications range from classic panel built control systems to modern interfaces between control microprocessors and their power circuits or any application where reliable galvanic separation is required between different circuits.

Current Transformer

 

⏯️Current Transformer

▶️Where Current Transformer are Use ?

 A Current Transformer (CT) is used to measure the current of another circuit. CTs are used worldwide to monitor high-voltage lines across national power grids. A CT is designed to produce an alternating current in its secondary winding that is proportional to the current that it is measuring in its primary.

▶️What is current transformer and its application?

A current transformer is a device used to produce an alternating current in its secondary, which is proportional to the AC current in its primary. This is primarily used when a current or voltage is too high to measure directly.