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63 amp trefas - men hvor mange watt?
Selv om nyere belysning stort sett benytter LED, finnes det fortsatt noen PAR-kanner som trekker 1000 watt. Spørsmålet er hvordan en skal kalkulere hva en har å rutte med av kilowatt - slik at det ikke blir mørkt ved første lysskift.
Utregning trefas-belastning:
16 Amp kurs 16 (ampére) x 230 (volt) x √3 = 6.373 watt = 6 kw
25 Amp kurs 25 (ampére) x 230 (volt) x √3 = 9.959 watt = 9 kw
32 Amp kurs 32 (ampére) x 230 (volt) x √3 = 12.747 watt = 12 kw
63 Amp kurs 63 (ampére) x 230 (volt) x √3 = 25.097 watt = 25 kw
| Tillatt strømbelastning for gummikabel. NEK400, tabell 52A2, referanse C: |
| Tverrsnitt,mm² |
1-fas, Amp. |
3-fas, Amp. |
Tverrsnitt,mm² |
1-fas,Amp. |
3-fas,Amp. |
| 0,75 |
6,0 |
6,0 |
35,0 |
138,0 |
119,0 |
| 1,0 |
10,0 |
10,0 |
50,0 |
168,0 |
144,0 |
| 1,5 |
19,0 |
17,0 |
70,0 |
213,0 |
184,0 |
| 2,5 |
27,0 |
24,0 |
95,0 |
258,0 |
223,0 |
| 4,0 |
36,0 |
32,0 |
120,0 |
299,0 |
259,0 |
| 6,0 |
46,0 |
41,0 |
150,0 |
344,0 |
299,0 |
| 10,0 |
63,0 |
57,0 |
185,0 |
392,0 |
341,0 |
| 16,0 |
85,0 |
76,0 |
240,0 |
461,0 |
403,0 |
| 25,0 |
112,0 |
96,0 |
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