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Three Phase AC Circuits

What is the Difference Between Neutral, Ground and Earth?

What is the Difference Between Neutral, Ground and Earth

The Main difference between Neutral, Ground and Earth? ‪To understand the difference between Neutral, Ground and Earth, we must understand the need of these things first. Neutral Neutral is return path for an AC circuit which is supposed to carry current in normal condition. This current may be because of many reasons, primarily because of phase current imbalance and some …

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Star and Delta Connected Lighting Loads

Star and Delta Connected Lighting Loads - Electrical Wiring Installation

Star and Delta Connected Lighting Loads – Electrical Wiring Installation Star (Y) Connected Lighting Load – Electrical Wiring A Star connected (Three Phase Four wires or 3-Phase, 4 wires) lighting system in a multi-storey (three Storey) building is shown in fig a. for uniform load distribution among three phases without being affected by random switching ON and OFF or burning lamps …

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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 …

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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 …

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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 …

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Rated characteristics of Electrical Contactors

Electric Magnetic Contactor Thermal Overload relay

Rated characteristics of Electrical Contactors Click image to enlarge 1. Types: (i) Electromagnetic (ii) Electro-pneumatic (iii) Pneumatic Important Terms and Definitions related to Motor Control and Protection 2. Interrupting Medium: (i) Air (ii) Oil (iii) SF6 gas (iv) Vacuum Abnormal Operating Condition and Causes of Induction Motors 3. Rated values of voltages: (i) Rated voltage (Operational voltage) For a three …

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How to determine the number of Nodes, Branches, Loops and Meshes in a Circuit?

Solving and analyzing electrical circuits and networks, you must know about Nodes, Branches, Loops and Meshes. So we are here with a simple tutorial ever to find all these terms in electric circuits. Node A point or junction where two or more circuit’s elements (resistor, capacitor, inductor etc) meet is called Node Branch That part or section of circuit which …

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Three Phase Electrical Wiring Installation in Home

Three Phase Electrical Wiring

3-Phase Electrical Wiring Installation at Home 3-Phase Consumer Unit Installation from Utility Pole to 3-Phase Energy Meter & 3-Phase Distribution board and How to Connect Single Phase & Three Phase Loads in a Three Phase Wiring Distribution System   Requirements Three Phase Energy meter 1 No Three Pole MCCB, 63A, 1 No Double Pole, 63A, 30mA Trip Current RCD, 3 …

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