nell’immagine qui sotto si nota un bel collegamento rettilineo degli SPD, fusibili e PE.
La mia domanda è:
Dato che nella realtà impiantistica praticamente nessuno segue questa regola, come dovrebbe essere il collegamento?
Grazie per la risposta.
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Come direbbe Rocco Siffredi: “E' sempre meglio dritto” ????
Battute a parte, i fenomeni che avvengono durante una sovratensione sono diversi rispetto a quelli che avvengono nel funzionamento ordinario.
La reattanza crea cadute di tensione nei collegamenti che si vanno ad aggiungere alla Up e di conseguenza diminuiscono il livello di protezione effettivo dell’SPD.
Un conduttore rettilineo ha un’induttanza inferiore rispetto ad un conduttore a spirale. Il fenomeno è particolarmente presente durante una sovratensione.
Per questo motivo è bene evitare pose che possono aumentare le induttanze.
Poi è ovvio che non c’è bisogno che il cavo sia perfettamente rettilineo ma di sicuro non dovrebbe essere spiralato.
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