Posts Tagged ‘medium voltage’

Electrical installation fire: Medium Voltage Autotransformer Fault (career story)

May 22nd, 2019 | Make a comment | Posted in Electrical Safety
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electrical installation fireWhat happens when a MV AutoTransformer misconnection and a LV breaker hooked up to an inadequate wire size meet? FIRE! Here’s a story that D.Ros, an electrical engineer based in Germany, kindly sent us. Read below the details on the day his electrical installation caught fire.


Enjoy and please note that the aim is not to denounce but to understand better the situation so that you all can be careful in the future during your own electrical projects.

 

Hi I’m D. and today I wanted to share a story with you all. The day when my electrical equipment burnt!

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Electrical system maintenance: importance of thermography (MV/LV)

November 6th, 2018 | Make a comment | Posted in Electrical Safety
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electrical system  maintenance thermography IR camera

Read this nice article about the importance of thermography in predictive maintenance of electrical systems (Medium Voltage/Low Voltage).
It is written by one of the member of this community and we think you’ll enjoy the thermal point of view of his essay.

If you’d like to write your own article too, we can publish :) it simply send us a mail.

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TOP 3 Best Medium Voltage technical guides

June 21st, 2017 | 1 Comment | Posted in iec standard
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gold-medalsilver-medalbronze-medal

As panel builders, electrical engineers, technicians, students or designers, you are led to work on MV electrical installations. These require equipments as well as a specific technical setting up to be efficient.

The setting up and the standards evolves together and to be up to date with the procedure to follow is becoming difficult. Furthermore, the quality of such an installation depends on several factors which have their own importance. Because of this, you sometimes encounter difficulties to summarize this technical information and it becomes hard for you to put them into practice during your daily interventions.

The consequences on your efficiency in the field are immediate: you lose time making researches to be up to date; you propose installations that you master only to your clients, and these are not conform to standards which also means non-optimized nor safe.

Stop enduring this situation! Just for you, we’ve searched and gone through several free technical guides available online. Further to our investigation, we’ve selected the best 3 and we’ve awarded them a gold, silver and bronze medal.
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Common problems in medium voltage switchgear

May 5th, 2017 | 1 Comment | Posted in Panel Building
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megaphone-redAs protection is the first concern in power systems design, companies spare no effort to upgrade protection devices to better, safer, smarter and more efficient devices.

This is obvious at a glance in the development of switchgear. Probably you know what switchgear is, but you don’t know the reason why switchgear got this name. Nor what are the most encountered problems in MV switchgear.

That’s what our fellow electrical engineer Yasser is going to explain today in this article he gently sent us! Leave your impressions below.

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LV and MV Switchgears – How to inspect, test and measure?

May 21st, 2015 | 4 Comments | Posted in Electrical Safety
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Eric S., one of the readers of the blog sent us an article in which he gives information on how to inspect, test and measure low and medium voltage switchgears. But first, he starts with few words on the importance of these checks and maintenance.

Enjoy and don’t forget you can send us your articles by mail.

Importance of routine checks and regular maintenance

If switchgears are installed in well ventilated, air-conditioned and clean environmental conditions, they do not require much maintenance.

LV-MV-Switchgears-maintenance

Major inspections are needed and are done only during plant shut downs. These inspections include contact wear identification, checking on interlock operations, observing overload settings, size of the fuses employed, overheating and finally, checking if there is any dirt or corrosion in the switchgear components.

In case of medium voltage switchgears, more concentration should be placed on checking the protective devices, oil levels in the circuit breaker and contact distances of the vacuum bottles and see if they are as per the manufacturer’s specifications.
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