Posts Tagged ‘electrical switchboard’

Electrical switchboards in 2050: AC or DC?

September 27th, 2018 | 3 Comments | Posted in Electrical distribution
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ac or dc driveNew article / essay by Muhammad, one of our dear senior electrical engineers. With more than 30 years of experience, he sometimes spoils us with great and original articles just like this one.

If you’ve ever wondered what your grandchildren will use between AC and DC, well enjoy your reading! Don’t forget to give your opinion in the comments section.
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Warmth, cold, humidity: the proper atmosphere inside the enclosures

October 14th, 2011 | 3 Comments | Posted in Panel Building
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Most of the electrical panels and switchboards don’t need any thermal management for their internal atmosphere. The variation range of their internal temperature remains acceptable through the seasons and stays within the limitations imposed by the incorporated devices. However, some electrical switchboards should deal with extremely cold temperatures (technical rooms in the mountain) or with very warm or humid atmospheres (installations in Africa, in the Far East,…). Without going that far, some electrical switchboards contain a high density of power electronics devices. These electronic devices are more and more compact and generate a high level of heat dissipation. It is particularly true as examples for transformers, and for variable speed drives too. This situation is also frequent in little or big computing rooms. So, what are the solutions for electrical switchboards? (more…)

Surge protector in switchboards > 50kA ?

June 14th, 2010 | 22 Comments | Posted in Electrical distribution
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electrical_risk

I would like to share a problem I face when I have to install a surge protection device type 1 in high power electrical switchboard. I already asked this question on another blog, and I’m trying to get more feedbacks from electrical engineers.

The situation is very “unconfortable” for me as a quality provider, because if a short-circuit of high value happens, though luckily probability is low, it would mean very serious safety risks …

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Surge protector in switchboards > 50kA ?

February 21st, 2010 | 14 Comments | Posted in Panel Building
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Lightning striking the Eiffel Tower (1902)

Lightning striking the Eiffel Tower (1902)

I would like to share a problem I face when I have to install a surge protection device type 1 in high power electrical switchboard.

The situation is very “unconfortable” for me as a quality provider, because if a short-circuit of high value happens, though luckily probability is low, it would mean very serious safety risks …

electrical_risk

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Effective surge protection installation into an electrical switchboard?

June 19th, 2009 | 1 Comment | Posted in Panel Building
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Many Electrical Contractors and Panel builders ask this question.

To achieve the effective installation of the surge protection, the surge arrester’s connections to the grid should be as short as possible. Any cable crossed by a lightning impulse current has a significant voltage to be added to the Surge Protection Device (SPD) residual voltage.
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