Posts Tagged ‘lightning protection’

Shielding of MV transmission lines and substations from lightening strokes (part 2)

January 4th, 2019 | Make a comment | Posted in Electrical Safety
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In this article, we will try to discuss the outlook of lightning protection inside the premises of an electrical substation… Enjoy and please comment below!

Lightning protection Introduction in context to part one

Lightning strikes are a natural phenomenon and high power surges regularly hit the vulnerable parts of earth’s crust. Electrical installations including the transmission lines and sub stations are quite vulnerable for lightning to strike due to the following reasons;

A substation gantry under lightning attack

A substation gantry under lightning attack

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Lightning Protection

June 27th, 2017 | Make a comment | Posted in Electrical Safety
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Hi again, this is Jesús Pérez Díaz, as always it’s a pleasure to write in this blog. This article is about Lightning protection, enjoy and comment it.

image: cdc.gov

image: cdc.gov

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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 | 15 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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Earthing system design

January 22nd, 2010 | 48 Comments | Posted in iec standard
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Electrical protection and lightning protection

I have a query on earthing system design. One designer has submitted me an earthing plan which interconnects the earth electrodes meant for equipment earthing and those for lightning protection purposes. By combining the earth electrodes he achieves overall earth resistance below one ohm required by IS 3043 (Indian standard).  But my question is whether this is an acceptable practice followed by industry or the earth electrodes of the two systems (protective earthing and lightning protection) can not be combined this way?
Would appreciate feedback. thanks in advance. 
D. Sunil 

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