Posts Tagged ‘voltage drop’

How to minimize voltage drops? – 4 practical guidelines

July 15th, 2015 | Make a comment | Posted in Power quality
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journal1Hi everybody, it’s Steven Mill. Hope you’re enjoying your holidays.

I’ve personally been thinking about some topics to deal with on the blog and I thought about the one I’ve published in 2014 (September) about the inspection of voltage drop in conductors.

So today I want to go further and post 4 guidelines in order to help my fellows engineers. Enjoy!

According to NEC, a three percent voltage drop in branched circuits, and five percent voltage drop in feeders connected to branched conductors, will not to create major problems as far as energy efficiency and operation of general circuits is concerned.

But, a voltage drop greater than the indicated percentage (5%), can hamper the life as well as the operational efficiency of electrical circuits and equipment. In an attempt to minimize the voltage drops and keep them below 5%, a few practical guidelines are to be followed.

Below mentioned are the four practical guidelines, following which, voltage drops can be considerably minimized:

  • Increasing the number of the conductors or their size
  • Reducing the power load
  • Decreasing the length of the conductor
  • Decreasing the temperature of the conductor


Inspection of voltage drop in conductors

September 8th, 2014 | Make a comment | Posted in Electrical Safety
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Hi everybody, it’s Steven Mill. I hope you all enjoyed your holidays (if you had some). I’m back to tell you about a pretty technical subject: the inspection of voltage drop in conductors. Don’t hesitate to tell me what you think!

Voltage drop

Conductor allows the flow of electrical energy to move in one and other directions. The pressure or electrical force that helps the current to flow in a conductor is voltage. Sometimes the pressure of voltage fails to provide the desired flow of current due to impedance. This situation causes voltage drop.

It is not affected by the equal number of electrons before or after entering the conductors. The fluctuation in the speed too, does not hurt it. It is only affected by the pressure or release of energy in the conductors. Voltage drop usually lasts for few seconds.

Inspection of voltage drop in conductors 1

Benefits and applications of medium voltage

August 28th, 2014 | 2 Comments | Posted in Electrical distribution
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Benefits and applications of medium voltage according to Marvin M, one of the member of the community.


Traditionally, any voltage over 600 V would evoke thoughts of high danger from the perceived high voltage. Engineers and technicians alike would abandon any systems operating over that limit and instead focus on the low voltage components, citing relative low risk levels.

Today, however, high skill levels, standards and installation requirements ensure that working with medium voltage is safe. It accords the following benefits.


Key Criteria to Consider When Selecting Motor Starting Methods

August 4th, 2014 | 2 Comments | Posted in Energy Efficiency - motors
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Our member Marvin M. wants to give you advices about selecting motor starting methods. Will this help? Let’s see…

Utility and distribution systems require additional loads to keep up with the demands. This has, however, complicated the selection of appropriate starting and controlling methods for motor and load combinations.

Optimal efficiency of the motor and consequently, the whole system, necessitates the need for an appropriate starting method. The following are the primary considerations to consider.


What are burnouts in Power System and how do they affect the stability of a Power System?

September 26th, 2013 | Make a comment | Posted in Electrical distribution
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A burnout is a drop in voltage in electrical power supply system. A burnout may be intentional or unintentional (spontaneous). Both occur in different circumstances.

Intentional burnouts are used in emergency situations when there is a requirement of load reduction.

What are burnouts in Power System and how do they affect the stability of a Power System

During short-term voltage drop or fall, the reduction is for a short duration while in case of intentional burnouts, the voltage fall may extend from minutes to hours.

The reduction of light intensity during the voltage drop thus gives the name burnout to the process.

Reason for voltage reduction can either be a disturbance in electrical grid or a deliberate reduction so as to decrease the load in order to prevent a power outage or blackout.


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