Publication Date: August, 2004 Discount Price: $17.50 (Cdn) -- $15.00 (U.S.)

Electric Motor Handbook - Volume 1

• Theory, Product Design, And Application Explained
• NEMA: Setting Standards of Excellence
• Canadian Codes
• Effective device Management Resource Guide
• Introduction to device Efficiency
• FAQs
• Common Mistakes Can Skew Efficiency Savings
• Utility Lamination Core Losses
• Explosion-Proof equipment Need Special Attention
• Power Factor Improved by Variable Frequency Drives
• Control Tutorial
• Utility-Grade Relays Used For Device Protection

  $8.5 only if you buy this volume together with NEW Vol. 2!!

• Utility Protection Aspects
• Infrared Condition Monitoring
• Maintenance and Troubleshooting
• Motors: Repair or Replace?
• Squirrel Cage Induction Rotor and Stator Winding Testing
• Current Analysis in Predictive Maintenance
• Device Testing and Repair
• Reference Directory
• Also: Directory of Manufacturers and Suppliers
• - 108 Pages

Product Description: These devices work by electromagnetism, but are based on other electromechanical phenomena, such as electrostatic forces and the piezoelectric effect, also exist. The fundamental principle upon which electromagnetic devices are based is that there is a mechanical force on any current-carrying wire contained within a magnetic field. The force is described by the Lorentz force law and is perpendicular to both the wire and the magnetic field. Most magnetic rotating devices are rotary, but linear ones also exist. In a rotary device, the rotating part (usually on the inside) is called the rotor, and the stationary part is called the stator. The rotor rotates because the wires and magnetic field are arranged so that a torque is developed about the rotor's axis. The equipment contains electromagnets that are wound on a frame. Though this frame is often called the armature, that term is often erroneously applied. Correctly, the armature is that part of the device across which the input voltage is supplied. Depending upon the design of the machine, either the rotor or the stator can serve as the armature.