Amprobe A-5000 Sheath Fault Locator User Manual
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Figura 5-1. Connessione tipica del trasmettitore T-5000
1
Cavo nero
2
Cavo rosso
3
Dispersore
4
Guasto
5
Conduttore guasto aperto a entrambe
le estremità
Quando viene applicata la corrente dal trasmettitore verso il guasto, nel terreno si crea un gradiente di tensione, avente
origine in corrispondenza del guasto. Le linee equipotenziali si presentano come illustrato nella Figura 5-2 e sono
analoghe alle increspature che si creano sulla superficie di uno stagno gettandovi un sasso o agli anelli di crescita di
un albero.
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