Motor Protection System

The electric motor is most essential drive in modern era of industrialization. From fractional HP AC motor used for different home appliances to giant synchronous motor and induction motor of up to 10,000 HP are used for different industrial applications. It should be protected against different electrical and mechanical faults for serving their purposes smoothly. The motor…

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Difference between Star and Delta connection of Motor

Star and Delta connection: Difference between star and delta connection are explained considering various factors like the basic definition of the connections, the existence of a neutral point, the connection of the terminals, the relation between line current and phase current and also between line voltage and phase voltage, speed, its insulation level, number of…

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Stepper Motor working principle

Stepper motor is a special type of synchronous motor which is designed to rotate a specific number of degrees for every electric pulse received by its control unit. Typical steps are 7.5 or 15 degree per pulse. It is a motor that can rotate in both directions, move in precise angular increments, sustain a holding…

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Main Parts of Motor

Main Parts of Motor  Motor is an electrical machine that converts electrical energy into mechanical energy. Motors work through the principles of electromagnetism. If you run electricity through a wire, it creates a magnetic field. If you coil the wire around a rod and run electricity through the wire, it creates a magnetic field around…

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Preventive Maintenance of 3 phase induction Motor

PREVENTIVE MAINTENANCE Most electrical equipment requires planned inspection and maintenance to keep it in proper working condition. Periodic inspections prevent serious damage to machinery by locating potential trouble areas. Observant personnel will make full use of their senses to diagnose and locate problems in electrical machinery: the sense of smell directs attention to burning insulation;…

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Differences between Synchronous Motor and Induction Motor

  AC motors can be categorized into two types: asynchronous motor and synchronous motor. An asynchronous motor is also called as induction motor. The two types are very different from each other. This paper is focused on the differences between an induction motor and a synchronous motor. Difference on Construction Induction motor: the stator winding…

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Universal Motor construction and working operation

What is Universal Motor A universal motor is a special type of motor which is designed to run on either DC or single phase AC supply. These motors are generally series wound (armature and field winding are in series), and hence produce high starting torque. That is why, universal motors generally comes built into the…

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How to do Motor terminal connection

This part is very important to ensure our electric motor installation is done perfectly and running properly.If we wrong setting for voltage value connection for induction motor,it can cause serious damage. But dont worry,this time i explain detail how to determine a motor terminal connection for suitable with our power supply.The key is motor nameplate.We…

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Motor current calculation using Winding resistance

Motor current calculation: The relationship between current (measured in amperes), resistance (measured in ohms) and voltage is found in one of the basic laws of electricity and electronics: Ohm’s Law. Ohm’s Law says that current is directly proportional to voltage and inversely proportional to resistance. This means that, if we know the resistance of a…

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