Posts Tagged ‘lightning protection’

Surge protector in switchboards > 50kA ?

June 14th, 2010 | 18 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 device type 1 in high power . 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 | 13 Comments | Posted in Panel Building
Tags: , , , ,
Lightning striking the Eiffel Tower (1902)

striking the Eiffel Tower (1902)

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

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

(more…)

Earthing system design

January 22nd, 2010 | 27 Comments | Posted in iec standard
Tags: , , ,

and

I have a query on design. One designer has submitted me an earthing plan which interconnects the earth electrodes meant for equipment earthing and those for 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 protection) can not be combined this way?
Would appreciate feedback. thanks in advance. 
D. Sunil 

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Surge protection devices: how to choose them?

October 20th, 2009 | 4 Comments | Posted in Electrical distribution
Tags: , ,

As everyone knows,  devices or surge protective devices (SPD) protect electrical equipment against overvoltages caused by . That said, it is not always easy to distinguish between the various technologies or know which to choose.

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Lightning risk management

July 27th, 2009 | 6 Comments | Posted in Electrical distribution
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protection is nowadays clearly moving from Benjamin Franklin age to a more scientific approach. This is in particular the case for the risk management
lightning risks

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