What is the maximum frequency allowed for low voltage electrical installations according to NBR5410?
I - The maximum frequency allowed for low vol...
What is the maximum frequency allowed for low voltage electrical installations according to NBR5410?
I - The maximum frequency allowed for low voltage electrical installations according to NBR5410 is 1kV in AC and 1,5kV in DC. II - The maximum frequency allowed for low voltage electrical installations according to NBR5410 is 400Hz. a) Only statement I is correct. b) Only statement II is correct. c) Both statements are correct. d) Both statements are incorrect.
De acordo com a NBR5410, a frequência máxima permitida para instalações elétricas de baixa tensão é de 400Hz. Portanto, a alternativa correta é a letra b) Apenas a afirmação II está correta.
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