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.

Tuesday, 27 June 2017

ELECTRICAL SAFETY PRECAUTIONS

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There  are  certain  safety  precautions  you should  observe  when  working  with  or  around electrical  appliances  and  equipment.  The following are some of the most common electrical safety precautions: Personnel...
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COMMON ELECTRICAL TROUBLES IN THE CIRCUIT

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GROUNDED – when a shock hazard is present causes by a leakage or excessive currents. Ground Fault Interrupter Ground fault interrupters are designed to protect from electrical shock by interrupting a household circuit when there is a difference in the currents in the...
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ELECTRICAL TROUBLESHOOTING AND REPAIR

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The 5 Steps of Troubleshooting Approach consists of the following: Step 1 Observation Step 2 Define Problem Area Step 3 Identify Possible Causes Step 4 Determine Most Probable Cause Step 5 Test and Repair Preparation You need to gather information regarding the equipment and the problem. If there are equipment history records, you should...
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Sunday, 19 March 2017

TOOLS, MATERIALS AND EQUIPMENT USED IN THE INSTALLATION OF INTERCOM SYSTEM

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Intercom system An intercom system is an electronic communication device intended for limited private dialogue, directions, collaborations or announcement. Intercom can be portable or permanently mounted in buildings. Intercom can incorporate with telephones, walkie talkies...
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Monday, 6 February 2017

INSTALLATION OF LIGHTING FIXTURE

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Tools and materials you need Tools: Wire cutters Electrical tester Ladder Screwdrivers (flat-head and Phillips) Adjustable wrench Pliers Pencil Materials: Light Fixture Metal outlet box Wire nuts Electrical tape Installing a ceiling fixture does not have to be a...
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Monday, 30 January 2017

TAPS, SPLICES AND JOINTS

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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...
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Saturday, 21 January 2017

HISTORY OF ELECTRICITY

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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,...
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