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Comparison between Star and Delta Connections

Comparison between Star and Delta Connections

Comparison between Star and Delta Connections Comparison between Star (Y) and Delta (Δ) Connections Star (Y) Connection Delta (Δ) Connection In STAR connection, the starting or finishing ends (Similar ends) of three coils are connected together to form the neutral point. A common wire is taken out from the neutral point which is called Neutral. In DELTA connection, the opposite ... Read More »

Delta Connection (Δ): 3 Phase Power, Voltage & Current Values

Delta Connection (Δ) Three Phase Power, Voltage & Current Values

Delta Connection  (Δ) In this system of interconnection, the starting ends of the three phases or coils are connected to the finishing ends of the coil. Or the starting end of the first coil is connected to the finishing end of the second coil and so on (for all three coils) and it looks like a closed mesh or circuit ... Read More »

Star Connection (Y): Three Phase Power, Voltage & Current Values

Star Connection (Y): Three Phase Power, Voltage & Current Values

Star Connection (Y) In this kind of interconnection, the starting ends or finishing ends (Similar ends) of three coils are connected together to form the neutral point. Or Star Connection is obtained by connecting together similar ends of the three coils, either “Starting” or “finishing”. The other ends are joined to the line wires. The common point is called the ... Read More »

Three Phase Current Values in a 3-Phase System

Three Phase Current Values in a 3-Phase System. current in a poly phase system

Three Phase Current Values in a 3-Phase System The following points may be noted for understanding the division of Three Phase Current in a 3-Phase System       1.  The arrow symbols shown alongside three phase current (IR, IY and IB) in fig 1 and 2 does not indicate the currents directions in a particular moment but shows the current directions ... Read More »

Basic Magnetic Terms definition with Formulas

Basic Magnetic Terms definition with Formulas

Magnetic and Magnetism Important terms definition and formulas Magnetic field or Magnetic Induction (B) Magnet or Electromagnet produces a Magnetic field. The field where the magnet attracts or repels magnetic materials such as iron, steel, etc. it may be defined as a force on a moving charge, F=q x v x B Where      F= Force,      V = Speed ... Read More »

Factors of Contactor’s Contact Design

Factors of Contactor's Contact Design

Factors of Contactor’s Contact Design The Following factors consider while designing the Contactor’s contacts Current carrying Capacity The ability of current carrying capacity of contacts takes into account while designing contactor’s contacts. The same factor consider while selecting the material for contacts. Hard drawn copper or forged copper is a good option for better result. Pressure between Contacts Pressure between contacts ... Read More »

How to test a battery with Test meter?

How to test a battery with Test meter?

How to test a battery with Test meter? There are lots of tools and meters to test battery, car battery and cells to check and measure the battery efficiency and condition. Although, we can test battery with digital millimeter, but for an almost accurate checkup, we may use special tools like Digital Battery Tester, Multi-Battery Tester, 12 Volt Electronic Battery ... Read More »