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  • White Paper: Transformer Protection
    The importance of effective transformer and control transformer protection cannot be over emphasized. After motors, transformers are typically the second most common application where proper overcurrent protection is required and utilized to provide the necessary protection to facilities
  • Applications of Motor Thermal Protector in Water Pump Industry
    The motor thermal protectors are usually set in fractional electric motors, transformers, coils, and sensors of water pumps for overheat protection.
  • Motor Thermal Protector used for Water Pumps Industry
    are usually set in fractional electric motors, transformers, coils, and sensors of water pumps for overheat protection. A motor thermal protector is an efficient components to detect over-heating and over-current problems when water pumps are in operation.
  • Electric Machinery and Transformers, Third Edition
    Electric Machinery and Transformers, Third Edition. This text discusses the principles behind building the primary infrastructure for the generation of electricity that supplies the energy needs of people throughout the world. It also covers the various types of electric motors.
  • Low Resistance Measurement
    There are many applications (contactors, motors, transformers etc.) where the resistance measurements yields values below 1.0 Ohm. The issues associated with this type of measurement are listed below.
  • AC Motors: Principle of Operation
    Universal Motors. A universal motor is a single-phase series motor, which is able to run on either alternating current (ac) or direct current (dc) and the characteristics are similar for both ac and dc. The field windings of a series motors are connected in series with the armature windings. Basic
  • Motor J-Box Thermography Route
    The AC induction motor is a critical component of our wood processing operation. For years we have performed infrared surveys on the distribution side, from the pad mount transformer downstream to the Motor Control Center. We also performed mechanical IR surveys on our key equipment, primarily air
  • Power Factor
    Power Factor (pf) is the ratio of real power to total power. Real, or productive power, is the actual power used in a building, measured in kilowatts (kW). Reactive power generates the magnetic field for inductive loads such as motors, transformers, lighting ballasts, etc. Reactive power
  • Total Harmonic Distortion and Effects in Electrical Power Systems
    Power sources act as non-linear loads, drawing a distorted waveform that contains harmonics. These harmonics can cause problems ranging from telephone transmission interference to degradation of conductors and insulating material in motors and transformers. Therefore it is important to gauge
  • The History of Rolling Stock Transformers with Midel
    The electrification of railways is not a new technology; it is something that has been done since the early 20th century. DC supplied at relatively low voltages of 600V to 3kV was initially used as it allowed direct feed of power to the traction motors and speed control of the trains
  • Bootstrap Power Supply for Motor Control
    Bootstrap power supplies can be used to reduce the. number of isolated power supplies or DC-to-DC converters. This helps to reduce cost and the PCB space as. compared to transformer-based power supplies. The. bootstrap output power supply circuit is used to power. the top-bridge gate drives
  • The Complete Guide to Electrical Insulation Testing
    Every electric wire in your plant - whether it's in a motor, generator, cable, switch, transformer, etc. - is carefully covered with some form of electrical insulation.
  • Electrical Equipment Handbook: Troubleshooting and Maintenance
    Electrical Equipment Handbook: Troubleshooting and Maintenance. In this thorough text, you will learn about the various types of transformers, motors, variable speed drives, generators, rectifiers, inverters, and uninterrupted power systems, as well as fault detection techniques, critical
  • Electrical Insulation Systems
    Motors, induction heaters, transformers and other devices with wound wire coils pose a problem to designers. Because they are not "perfect," they suffer losses that show up as heat. Excessive heat can damage insulation, leading to short circuits and fire hazards.
  • Fast Switching Power Module Solutions for Applications with 1200V Component Rating
    Power applications are forced to work at higher frequencies. This is caused by increased demand on motor drives with special capabilities for high speed, low noise or ultra high dynamic as well as the fact that higher frequencies reduce the mechanic size of the passive components as transformers

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