Motors Fault Finding – Three Phase Induction Motors 6 Dec 202027 Feb 2021 All electric motors have their predetermined life span, typically ranging from 30,000 to 40,000 hours. However, this is dependent on proper maintenance - without which they are likely to break…
Controllers… Fault Finding – Single Phase Motors & Standard Controllers 6 Dec 202011 Apr 2021 ProblemPossible Cause'ACO" (and 'MCO') Does not Close when Start is Called for.Fault with supply. Power supply absent at terminals L1, L2 and N. External control circuit is blocking operation. Thermal…
Motors Choice of Correct Type of Motor 30 Nov 202030 Nov 2020 We will now consider the various types of motors that are available and relative merits of each. THE SQUIRREL CAGE ROTOR MOTOR. This is the most common of motors that…
Motors Temperature & Insulation – A Brief Guide 22 Nov 202010 Apr 2021 REFERENCE STANDARDS IEC 34-1, BS 4999, AS 1359.32. TEMPERATURE RISE AND MOTOR LIFE The “Life” refers to the life of the windings before they require rewinding. The Temperature rise of…
Motors How Does A Motor Work? 19 Nov 202019 Nov 2020 THEORY In very basic terms, the reason that the shaft of any motor rotates ( when the motor is switched on) can be explained by one law of Electromagnetic theory.…
Controls… 4 Steps to Calculate Short Circuit Ratings in Industrial Control Panels 1 May 202018 Apr 2021 By ABB Low Voltage A short circuit is a low-resistance connection established by accident or intention between two points in an electric circuit. This excessive electric current potentially causes circuit…
Controls… Basic Questions to Ask About Control Panels 12 Jan 20206 Dec 2020 By Jerry Smith Electrical control panels are designed and used to control mechanical equipment. Each one is designed for a specific equipment arrangement and includes devices that allow an operator…
Drives… Line and Load Reactors Basics 11 May 201914 Feb 2021 Reactors can protect both motors and variable frequency drives (VFDs) from harmful current and voltage spikes. Reactors also help reduce power line distortion, known as harmonics, by adding impedance to…
Motors The Mystery of Motor Frame Size 18 Apr 201910 Jan 2020 By Edward Cowern, P.E. – Baldor/ABB. Introduction Industrial electric motors have been available for nearly a century. In that time there have been a great many changes. One of the…
Motors Motor Considerations with AC Drives 10 Apr 201922 Apr 2019 By Leeson. One drawback to pulse width modulated drives is their tendency to produce voltage spikes, which in some instances can damage the insulation systems used in electric motors. Pulse…