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Portuguese to English translations [PRO]
Tech/Engineering - Engineering: Industrial | | Portuguese term or phrase: arcos de contorno | | A resistividade superficial diminui aumentando a corrente de fuga, quando há depósitos de partículas provenientes de processos industriais ou ambientais (poeira, cinzas, carvão, etc.), o que poderá provocar a formação de arcos de contorno (descargas externas), que podem causar danos aos isoladores. |
| | | Selected response from:
 Douglas Bissell
Portugal
Local time: 06:03
| Grading comment | 4 KudoZ points were awarded for this answer |
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3 mins confidence:   peer agreement (net): +1
10 hrs confidence: arc flash
Explanation:
An arc flash (or arc blast) is a type of electrical explosion that results from a low impedance connection to ground or another voltage phase in an electrical system.
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The translation workplace 
