Posts Tagged ‘medium voltage’

5 most common starter device types (LV/MV motor starters)

April 16th, 2015 | Make a comment | Posted in Energy Efficiency - motors
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Hi it’s Steven Mill. I think I’ve never written on this topic before, so let me tell you about motor starters…

starter device

A starter, more or less acts as a supervisor of the motor. It controls the power supply, defies switching of overloads, and also takes on the duty of disconnecting the motor from the mains, when deemed necessary.

As we can read about the topic:

“A starter can be defined as a combination electric motor controller, which can start or stop the motor with the help of external switches, protect the motors from getting overloaded, and disconnect them from the mains, in case of a serious power or load fluctuation, by taking help from the integral disconnecting devices.”


Top 10 factors that govern selection of medium voltage drives

November 14th, 2014 | 2 Comments | Posted in Electrical distribution
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Few weeks ago, we recieved this very interesting article from a senior engineer. Just for us, he made a list of 10 factors that should drive you to select medium voltage drives.

So here’s an expert’s advice…

Though medium voltage drives have been around for more than three decades now, high quality and reliable medium voltage drives have only been available since the past few years.

Specifying and choosing high quality medium voltage drives can often be a tedious task, because there are many parameters that govern its quality and performance.

High Quality Medium Voltage Drives

High Quality Medium Voltage Drives

Many companies claim that the drives manufactured by them are of high quality, even if they are not. Because, they believe that, not many people will go into the details. And that’s true! Only an experienced electrical engineer would know the difference between a high quality and ordinary voltage drive.

Depending on my 15 years of experience, as a project manager for a reputed steel company, I would recommend you to carefully examine the below top 10 factors that can actually help you to differentiate high quality and ordinary medium voltage drives:


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.


Medium Voltage Circuit Breakers

January 17th, 2014 | 1 Comment | Posted in Electrical distribution
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Circuit Breakers explained on a series of tutorials. That’s what Nasir, one of the member of the community decided to do. Here’s the 6th part, we hope that you enjoy his contributions.

Medium voltage circuit breakers are the ones which operate on voltage levels around 400 volts to 15kV approximately. The reason they are named so is that extremely low voltage conditions are not suitable for them to operate properly, neither a very high voltage helps them perform their operation accurately. So a medium voltage level around this figure is normal for them to operate on.

One thing that is different about the medium voltage circuit breakers is that unlike most of the types of these breakers, they can be operated manually as well. The reason behind this manual operation is that since they can also operate on voltage levels below 600 volts, and this thing gives them the incentive to be manually operated.

It should be kept here in mind that only the circuit breakers which can be operated on voltages lower than 600 volts can be manually operated.

Medium Voltage Circuit Breakers 2


Electrical Safety in Medium Voltage

September 7th, 2009 | 16 Comments | Posted in Electrical distribution, Electrical Safety
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Medium Voltage disconnector s in electrical installation s are not safety devices !

MV switch disconnector

MV switch disconnector


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