Electrical Motor Control Wirings

This blog contains several Electrical Motor Control Wirings, and Operations.

  • Delayed Automatic Forward Reverse Motion of Overhead Crane Driven by a Motor

    This is another situation that requires the overhead crane to rest for a while upon reaching both of the rail. After a pre-determine time the overhead crane will re-start in the opposite direction.

  • Limiting the Forward and Reverse Motion of an overhead crane driven by a motor

    The motion of an overhead crane moving forward and reverse can be automatically stop at both end by placing a limit switches X and Y in the control circuit of the Forward – Reverse Motor Control shown in Figure below (d).

  • Automatic Forward and Reverse Motion of Overhead Crane Driven by a Motor

    Notice that when contact (1-2) of limit switch X opens to de-energized contactor F, its contact (1-3) will almost simultaneously closed to energized the contactor R. This will bring about the automatic reversal of the overhead crane from the left to the right.

  • Forward Reverse Motor Control

    The forward reverse motor control is used i a system where forward and backward or upward and downward movement in the operation are needed.

  • WYE-DELTA REDUCE VOLTAGE STARTER

    Some motors starters at high current more than several times its current at full load condition. The effect of this to other is necessary tripping of circuit breakers. One way of reducing the high starting current of a motor is the start the motor with the low voltage at its winding. After a few seconds, when the motor is already running at its stable condition, the rated full voltage is applied to its winding. This system is called reduced voltage starting.

Monday, 30 January 2017

TAPS, SPLICES AND JOINTS

, 2 comments
Method of Skinning Electrical Wire Removing the insulation in preparing the insulated conductors for making joints or splices, the insulation must first be removed from each conductor a proper distance depending upon the type of joint or splice to be made. This process is...
Share:
Read More

Saturday, 21 January 2017

HISTORY OF ELECTRICITY

, 2 comments
Electricity plays an important role in man’s conquest for existence .It has been said that it is here with us since the beginning of the time. In 600 B.C, Thales a Greek philosopher accidentally discovered static electricity. Noticing that his garment had bits of hair and straw,...
Share:
Read More

PRINCIPLES AND THEORIES OF ELECTRON

, No comments
Electricity is a property of the basic particle of matter which, like an atom, consists of proton, electron and neutron. The electron is the negatively charged particle of an atom which is sometimes referred to as the negatively charge of electricity. On the other hand, the...
Share:
Read More

Thursday, 12 January 2017

THREE PHASE AND SINGLE PHASE Induction Motors

, 2 comments
Induction Motor •      Induction motors are used worldwide in many residential, commercial, industrial, and utility applications. •          Induction Motors transform electrical energy into mechanical energy. •     It can...
Share:
Read More
Powered by Blogger.