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 ... Read More »

Abnormal Operating Condition and Causes of Induction Motors

Abnormal Operating Condition and Causes of Induction Motors

Abnormal Operating Condition and Causes of Induction Motors Three phase induction motors are used on a large scale in industries. We may divide the abnormal conditions and causes of three phase motor this way. Click image to enlarge following are the Abnormal Operating Condition and Causes of Induction Motors Mechanical Overload Block the pump or gear system connected with motors ... Read More »

ABB Vs Siemens (A General Review)

ABB-vs-Siemens

ABB Vs Siemens (A General Review) By:  Candice Hubbard ABB Ltd., is currently the biggest builder of power grids in the world. The company, located in Switzerland considers itself to be a worldwide leader in reference to power and automation technologies which serve to allow customers of utility and industry to better their operation while decreasing the environmental effect. The ... Read More »

Three Phase Motor Power & Control Wiring Diagrams

Three Phase Motor Power & Control Wiring Diagrams 3-Phase Motor Power & Control Wiring Diagrams  6. Three Phase Motor Connection Schematic, Power and Control Wiring Installation Diagrams. The Star-Delta (Y-Δ) 3-phase Motor Starting Method by Automatic star-delta starter with Timer. Three Phase Motor Connection Star/Delta (Y-Δ) Reverse / Forward with Timer Power & Control Diagram Starting & Stopping of 3-Phase ... Read More »

Control 3-Phase Motor from more than Two buttons Power & Control Diagrams

Control-Three-Phase-Motor-from-more-than-Two-buttons-Power-Diagram

Control 3-Phase Motor from more than Two buttons Power & Control Diagrams Abbreviations: L1 , L2, L3 = Red, Yellow, Blue ( 3 Phase Lines) N = Neutral  O/L = Over Load RelayNO = Normally OpenK1 = Contactor (Contactor coil)K1/NO = Contactor Holding Coil (Normally Open) Control 3-Phase Motor from more than Two buttons Power DiagramPower Diagram:  Control 3-Phase Motor ... Read More »