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12Jan 20206 Dec 2020

Basic Questions to Ask About Control Panels

By Jerry Smith Electrical control panels are designed and used to control mechanical equipment. Each one is designed for a…

24Jul 201916 Dec 2020

Introduction to Relays

By OMRON. What are relays? In a very basic sense, a relay is simply a binary actuator. At any point…

11May 201915 Mar 2020

Line and Load Reactors Basics

By TCI Trans-Coil. Reactors can protect both motors and variable frequency drives (VFDs) from harmful current and voltage spikes. Reactors…

Why it Often Pays to Choose Custom Rather than Standard Sensors

29 Dec 202029 Dec 2020

Sam Drury, Sales & Marketing Director at Impress Sensors & Systems Ltd, explains why some engineers prefer custom pressure sensors over standard, off-the-shelf versions. A standard, off-the-shelf pressure sensor refers…

How Silicon Pressure Sensors Work

The historical problems associated with silicon oil-filled pressure sensors are well documented. However, recent advances in sensor design has led to improved versions that overcome many of these disadvantages, says…

Motors

Fault Finding – Three Phase Induction Motors

6 Dec 202016 Dec 2020

ProblemPossible CauseTestsSolutionMotor will not start.Fault with supply. Motor or load locked up. Wrong connections in control circuit.Check for correct voltage at motor terminals. Make sure motor and load are free…

Fault Finding – Single Phase Motors & Standard Controllers

6 Dec 202016 Dec 2020

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

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.…

More Profit from Your Control Panel

12 Sep 202016 Dec 2020

By Omron Panel builders and machine designers like the aesthetic appeal of switches with the metal bezels. Omron’s A22N series delivers that appearance with simple installation and NEMA 4X (IP66)…

How Many Fuses Will Open on a Short Circuit?

30 May 202012 Jan 2021

By Mersen In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide over-current protection of an electrical circuit. Its essential component is a metal…

4 Steps to Calculate Short Circuit Ratings in Industrial Control Panels

1 May 202019 Sep 2020

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…