INDUCTION MOTORS: Slip; Rotor Speed and Synchronous Speed
Is it possible for the rotor of an induction motor to reach Synchronous Speed? Why is slip necessary?
Magnetic core – How to assess its quality and integrity?
In most rotors and stators, the core is formed by "stacking" steel plates (siliceous or not), insulated from
ELECTRIC MOTOR USEFUL LIFE
What is the expected operating time for an electric motor? 10, 20, 30 years? A common first question
PARTIAL DISCHARGE AND CORONA
Present in the daily life of medium and high voltage maintenance teams, this tip presents the conceptual difference
INSULATION SYSTEM – COILS
Some molded coils have black paint on the straight side and some do not, what is the difference?
BRUSHLESS EXCITATION SYSTEM ON GENERATORS
How does the brushless excitation system work on generators? The brushless excitation system consists of an AC exciter
Overhaul or Rejuvenation – How to get the best result?
For the electric machines, preventive maintenance is a common practice and the market commonly uses the word rejuvenation
Roebel transposition – its importance in large machines
Large generators operate with a high current density due to their high power. Under these conditions, and due
AGING OF THE INSULATION SYSTEM
The useful life of an electrical machine is commonly associated with the service life of the insulation material,
Would you like to receive exclusive content about electrical machines?
Nishi has specialized in repairing and maintaining your equipment for over 70 years.
Register your e-mail and receive all the news in the sector.