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fusión de la varilla de conexión a tierra

English translation: fusing/melting of the earth rod

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)

Spanish term or phrase:	fusión de la varilla de conexión a tierra
English translation:	fusing/melting of the earth rod
Entered by:	Wendy Leech

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09:07 Jul 6, 2011

Spanish to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng / transformers/wind turbine

Spanish term or phrase: fusión de la varilla de conexión a tierra

From a report on the cuases of a fire in the nacelle of a wind turbine:

Existe un alto número de circunstancias que son incompatibles con un fallo en la zona de alta tensión del transformador:

- fusión de la varilla de conexión a tierra, que tampoco habría actuado en caso de que el transformador fuese la causa del siniestro.

also

Se encontró fundida la varilla de conexión a tierra, lo que nunca habría ocurrido si la causa hubiera sido en la Alta Tensión del transformador

I am looking for the correct term for fusion/fundida - i.e. what do Earth Rods do when they fail (do they "blow" like a fuse?).

Thanks.

Wendy Leech KudoZ activity Questions: 728 (2 open) (2 without valid answers) (60 closed without grading) Answers: 181 United Kingdom
Local time: 02:58

fusing/melting of the earth rod

Explanation:
http://www.openelectrical.org/wiki/index.php?title=Earthing_...
"the temperature limit for earthing grid conductors is the melting point of the conductor. In other words, during the worst case earth fault, we don't want the earthing grid conductors to start melting!"

http://www.erico.com/public/library/fep/LT0359_2.pdf
"Where higher fault conditions exist, the conductor size is determined by considering the circumstances required to avoid fusing (melting) the conductor."

http://www.radiobanter.com/showthread.php?t=121846&page=2
"A lighning down conductor needs to carry something like 20kA for 100ms, so it needs to be substantial enough that it doesn't melt and remains in place to protect against the next strike."