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Tema: Uvod u TVNI

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Standardni izolacijski nivoi (IEC 60071-1)<br />

Najviši napon<br />

za opremu<br />

Um<br />

(kVef)<br />

300<br />

362<br />

Standardni podnosivi sklopni napon<br />

Podužna<br />

izolacija<br />

(opaska 1)<br />

(kVvrh)<br />

Faza – zemlja<br />

(kVvrh)<br />

Faza – faza<br />

(odnos prema<br />

faza – zemlja)<br />

750 750 1,50<br />

750 850 1,50<br />

850 850 1,50<br />

850 950 1,50<br />

850 850 1,60<br />

420 950 950 1,50<br />

950 1 050 1,50<br />

950 950 1,70<br />

525 950 1 050 1,60<br />

950 1 175 1,50<br />

1 175 1 300 1,70<br />

765 1 175 1 425 1,70<br />

1 175 1 550 1,60<br />

Standardni<br />

podnosivi<br />

atmosferski<br />

impulsni<br />

napon<br />

(kVvrh)<br />

850<br />

950<br />

950<br />

1 050<br />

950<br />

1 050<br />

1 050<br />

1 175<br />

1 050<br />

1 175<br />

1 175<br />

1 300<br />

1 300<br />

1 425<br />

1 175<br />

1 300<br />

1 300<br />

1 425<br />

1 425<br />

1 550<br />

1 675<br />

1 800<br />

1 800<br />

1 950<br />

1 950<br />

2 100<br />

Rang II:<br />

Um ≥ 245 kV<br />

Vrijednosti standardnog napona su iste za:<br />

• Faza – zemlja<br />

• Faza – faza<br />

• Podužnu izolaciju

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